| 1 | /* |
| 2 | * vim:shiftwidth=2:expandtab |
| 3 | */ |
| 4 | #include <stddef.h> |
| 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <assert.h> |
| 8 | |
| 9 | #include "../../pico/pico_int.h" |
| 10 | #include "sh2.h" |
| 11 | #include "compiler.h" |
| 12 | #include "../drc/cmn.h" |
| 13 | |
| 14 | #ifndef DRC_DEBUG |
| 15 | #define DRC_DEBUG 0 |
| 16 | #endif |
| 17 | |
| 18 | #if DRC_DEBUG |
| 19 | #define dbg(l,...) { \ |
| 20 | if ((l) & DRC_DEBUG) \ |
| 21 | elprintf(EL_STATUS, ##__VA_ARGS__); \ |
| 22 | } |
| 23 | |
| 24 | #include "mame/sh2dasm.h" |
| 25 | #include <platform/linux/host_dasm.h> |
| 26 | static int insns_compiled, hash_collisions, host_insn_count; |
| 27 | #define COUNT_OP \ |
| 28 | host_insn_count++ |
| 29 | #else // !DRC_DEBUG |
| 30 | #define COUNT_OP |
| 31 | #define dbg(...) |
| 32 | #endif |
| 33 | |
| 34 | #if (DRC_DEBUG & 2) |
| 35 | static u8 *tcache_dsm_ptrs[3]; |
| 36 | static char sh2dasm_buff[64]; |
| 37 | #define do_host_disasm(tcid) \ |
| 38 | host_dasm(tcache_dsm_ptrs[tcid], tcache_ptr - tcache_dsm_ptrs[tcid]); \ |
| 39 | tcache_dsm_ptrs[tcid] = tcache_ptr |
| 40 | #else |
| 41 | #define do_host_disasm(x) |
| 42 | #endif |
| 43 | |
| 44 | #define BLOCK_CYCLE_LIMIT 100 |
| 45 | #define MAX_BLOCK_SIZE (BLOCK_CYCLE_LIMIT * 6 * 6) |
| 46 | |
| 47 | // we have 3 translation cache buffers, split from one drc/cmn buffer. |
| 48 | // BIOS shares tcache with data array because it's only used for init |
| 49 | // and can be discarded early |
| 50 | static const int tcache_sizes[3] = { |
| 51 | DRC_TCACHE_SIZE * 6 / 8, // ROM, DRAM |
| 52 | DRC_TCACHE_SIZE / 8, // BIOS, data array in master sh2 |
| 53 | DRC_TCACHE_SIZE / 8, // ... slave |
| 54 | }; |
| 55 | |
| 56 | static u8 *tcache_bases[3]; |
| 57 | static u8 *tcache_ptrs[3]; |
| 58 | |
| 59 | // ptr for code emiters |
| 60 | static u8 *tcache_ptr; |
| 61 | |
| 62 | // host register tracking |
| 63 | enum { |
| 64 | HR_FREE, |
| 65 | HR_CACHED, // 'val' has sh2_reg_e |
| 66 | HR_CACHED_DIRTY, |
| 67 | HR_CONST, // 'val' has constant |
| 68 | HR_TEMP, // reg used for temp storage |
| 69 | }; |
| 70 | |
| 71 | typedef struct { |
| 72 | u8 reg; |
| 73 | u8 type; |
| 74 | u16 stamp; // kind of a timestamp |
| 75 | u32 val; |
| 76 | } temp_reg_t; |
| 77 | |
| 78 | // note: reg_temp[] must have at least the amount of |
| 79 | // registers used by handlers in worst case (currently 4) |
| 80 | #ifdef ARM |
| 81 | #include "../drc/emit_arm.c" |
| 82 | |
| 83 | static const int reg_map_g2h[] = { |
| 84 | -1, -1, -1, -1, |
| 85 | -1, -1, -1, -1, |
| 86 | -1, -1, -1, -1, |
| 87 | -1, -1, -1, -1, |
| 88 | -1, -1, -1, -1, |
| 89 | -1, -1, -1, -1, |
| 90 | }; |
| 91 | |
| 92 | static temp_reg_t reg_temp[] = { |
| 93 | { 0, }, |
| 94 | { 1, }, |
| 95 | { 12, }, |
| 96 | { 14, }, |
| 97 | { 2, }, |
| 98 | { 3, }, |
| 99 | }; |
| 100 | |
| 101 | #else |
| 102 | #include "../drc/emit_x86.c" |
| 103 | |
| 104 | static const int reg_map_g2h[] = { |
| 105 | -1, -1, -1, -1, |
| 106 | -1, -1, -1, -1, |
| 107 | -1, -1, -1, -1, |
| 108 | -1, -1, -1, -1, |
| 109 | -1, -1, -1, -1, |
| 110 | -1, -1, -1, -1, |
| 111 | }; |
| 112 | |
| 113 | // ax, cx, dx are usually temporaries by convention |
| 114 | static temp_reg_t reg_temp[] = { |
| 115 | { xAX, }, |
| 116 | { xBX, }, |
| 117 | { xCX, }, |
| 118 | { xDX, }, |
| 119 | }; |
| 120 | |
| 121 | #endif |
| 122 | |
| 123 | #define T 0x00000001 |
| 124 | #define S 0x00000002 |
| 125 | #define I 0x000000f0 |
| 126 | #define Q 0x00000100 |
| 127 | #define M 0x00000200 |
| 128 | |
| 129 | #define Q_SHIFT 8 |
| 130 | #define M_SHIFT 9 |
| 131 | |
| 132 | typedef struct block_desc_ { |
| 133 | u32 addr; // SH2 PC address |
| 134 | u32 end_addr; // TODO rm? |
| 135 | void *tcache_ptr; // translated block for above PC |
| 136 | struct block_desc_ *next; // next block with the same PC hash |
| 137 | #if (DRC_DEBUG & 1) |
| 138 | int refcount; |
| 139 | #endif |
| 140 | } block_desc; |
| 141 | |
| 142 | static const int block_max_counts[3] = { |
| 143 | 4*1024, |
| 144 | 256, |
| 145 | 256, |
| 146 | }; |
| 147 | static block_desc *block_tables[3]; |
| 148 | static int block_counts[3]; |
| 149 | |
| 150 | // ROM hash table |
| 151 | #define MAX_HASH_ENTRIES 1024 |
| 152 | #define HASH_MASK (MAX_HASH_ENTRIES - 1) |
| 153 | static void **hash_table; |
| 154 | |
| 155 | extern void sh2_drc_entry(SH2 *sh2, void *block); |
| 156 | extern void sh2_drc_exit(void); |
| 157 | |
| 158 | // tmp |
| 159 | extern void REGPARM(2) sh2_do_op(SH2 *sh2, int opcode); |
| 160 | static void REGPARM(1) sh2_test_irq(SH2 *sh2); |
| 161 | |
| 162 | static void flush_tcache(int tcid) |
| 163 | { |
| 164 | dbg(1, "tcache #%d flush! (%d/%d, bds %d/%d)", tcid, |
| 165 | tcache_ptrs[tcid] - tcache_bases[tcid], tcache_sizes[tcid], |
| 166 | block_counts[tcid], block_max_counts[tcid]); |
| 167 | |
| 168 | block_counts[tcid] = 0; |
| 169 | tcache_ptrs[tcid] = tcache_bases[tcid]; |
| 170 | if (tcid == 0) { // ROM, RAM |
| 171 | memset(hash_table, 0, sizeof(hash_table[0]) * MAX_HASH_ENTRIES); |
| 172 | memset(Pico32xMem->drcblk_ram, 0, sizeof(Pico32xMem->drcblk_ram)); |
| 173 | } |
| 174 | else |
| 175 | memset(Pico32xMem->drcblk_da[tcid - 1], 0, sizeof(Pico32xMem->drcblk_da[0])); |
| 176 | #if (DRC_DEBUG & 2) |
| 177 | tcache_dsm_ptrs[tcid] = tcache_bases[tcid]; |
| 178 | #endif |
| 179 | } |
| 180 | |
| 181 | static void *dr_find_block(block_desc *tab, u32 addr) |
| 182 | { |
| 183 | for (tab = tab->next; tab != NULL; tab = tab->next) |
| 184 | if (tab->addr == addr) |
| 185 | break; |
| 186 | |
| 187 | if (tab != NULL) |
| 188 | return tab->tcache_ptr; |
| 189 | |
| 190 | printf("block miss for %08x\n", addr); |
| 191 | return NULL; |
| 192 | } |
| 193 | |
| 194 | static block_desc *dr_add_block(u32 addr, int tcache_id, int *blk_id) |
| 195 | { |
| 196 | int *bcount = &block_counts[tcache_id]; |
| 197 | block_desc *bd; |
| 198 | |
| 199 | if (*bcount >= block_max_counts[tcache_id]) |
| 200 | return NULL; |
| 201 | |
| 202 | bd = &block_tables[tcache_id][*bcount]; |
| 203 | bd->addr = addr; |
| 204 | bd->tcache_ptr = tcache_ptr; |
| 205 | *blk_id = *bcount; |
| 206 | (*bcount)++; |
| 207 | |
| 208 | return bd; |
| 209 | } |
| 210 | |
| 211 | #define HASH_FUNC(hash_tab, addr) \ |
| 212 | ((block_desc **)(hash_tab))[(addr) & HASH_MASK] |
| 213 | |
| 214 | // --------------------------------------------------------------- |
| 215 | |
| 216 | // register chache |
| 217 | static u16 rcache_counter; |
| 218 | |
| 219 | static temp_reg_t *rcache_evict(void) |
| 220 | { |
| 221 | // evict reg with oldest stamp |
| 222 | int i, oldest = -1; |
| 223 | u16 min_stamp = (u16)-1; |
| 224 | |
| 225 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) { |
| 226 | if (reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) |
| 227 | if (reg_temp[i].stamp <= min_stamp) { |
| 228 | min_stamp = reg_temp[i].stamp; |
| 229 | oldest = i; |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | if (oldest == -1) { |
| 234 | printf("no registers to evict, aborting\n"); |
| 235 | exit(1); |
| 236 | } |
| 237 | |
| 238 | i = oldest; |
| 239 | if (reg_temp[i].type == HR_CACHED_DIRTY) { |
| 240 | // writeback |
| 241 | emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4); |
| 242 | } |
| 243 | |
| 244 | return ®_temp[i]; |
| 245 | } |
| 246 | |
| 247 | typedef enum { |
| 248 | RC_GR_READ, |
| 249 | RC_GR_WRITE, |
| 250 | RC_GR_RMW, |
| 251 | } rc_gr_mode; |
| 252 | |
| 253 | // note: must not be called when doing conditional code |
| 254 | static int rcache_get_reg(sh2_reg_e r, rc_gr_mode mode) |
| 255 | { |
| 256 | temp_reg_t *tr; |
| 257 | int i; |
| 258 | |
| 259 | // maybe already statically mapped? |
| 260 | i = reg_map_g2h[r]; |
| 261 | if (i != -1) |
| 262 | return i; |
| 263 | |
| 264 | rcache_counter++; |
| 265 | |
| 266 | // maybe already cached? |
| 267 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
| 268 | if ((reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) && |
| 269 | reg_temp[i].val == r) |
| 270 | { |
| 271 | reg_temp[i].stamp = rcache_counter; |
| 272 | if (mode != RC_GR_READ) |
| 273 | reg_temp[i].type = HR_CACHED_DIRTY; |
| 274 | return reg_temp[i].reg; |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | // use any free reg |
| 279 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
| 280 | if (reg_temp[i].type == HR_FREE || reg_temp[i].type == HR_CONST) { |
| 281 | tr = ®_temp[i]; |
| 282 | goto do_alloc; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | tr = rcache_evict(); |
| 287 | |
| 288 | do_alloc: |
| 289 | if (mode != RC_GR_WRITE) |
| 290 | emith_ctx_read(tr->reg, r * 4); |
| 291 | |
| 292 | tr->type = mode != RC_GR_READ ? HR_CACHED_DIRTY : HR_CACHED; |
| 293 | tr->val = r; |
| 294 | tr->stamp = rcache_counter; |
| 295 | return tr->reg; |
| 296 | } |
| 297 | |
| 298 | static int rcache_get_tmp(void) |
| 299 | { |
| 300 | temp_reg_t *tr; |
| 301 | int i; |
| 302 | |
| 303 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 304 | if (reg_temp[i].type == HR_FREE || reg_temp[i].type == HR_CONST) { |
| 305 | tr = ®_temp[i]; |
| 306 | goto do_alloc; |
| 307 | } |
| 308 | |
| 309 | tr = rcache_evict(); |
| 310 | |
| 311 | do_alloc: |
| 312 | tr->type = HR_TEMP; |
| 313 | return tr->reg; |
| 314 | } |
| 315 | |
| 316 | static int rcache_get_arg_id(int arg) |
| 317 | { |
| 318 | int i, r = 0; |
| 319 | host_arg2reg(r, arg); |
| 320 | |
| 321 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 322 | if (reg_temp[i].reg == r) |
| 323 | break; |
| 324 | |
| 325 | if (i == ARRAY_SIZE(reg_temp)) |
| 326 | // let's just say it's untracked arg reg |
| 327 | return r; |
| 328 | |
| 329 | if (reg_temp[i].type == HR_CACHED_DIRTY) { |
| 330 | // writeback |
| 331 | emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4); |
| 332 | } |
| 333 | else if (reg_temp[i].type == HR_TEMP) { |
| 334 | printf("arg %d reg %d already used, aborting\n", arg, r); |
| 335 | exit(1); |
| 336 | } |
| 337 | |
| 338 | return i; |
| 339 | } |
| 340 | |
| 341 | // get a reg to be used as function arg |
| 342 | // it's assumed that regs are cleaned before call |
| 343 | static int rcache_get_tmp_arg(int arg) |
| 344 | { |
| 345 | int id = rcache_get_arg_id(arg); |
| 346 | reg_temp[id].type = HR_TEMP; |
| 347 | |
| 348 | return reg_temp[id].reg; |
| 349 | } |
| 350 | |
| 351 | // same but caches reg. RC_GR_READ only. |
| 352 | static int rcache_get_reg_arg(int arg, sh2_reg_e r) |
| 353 | { |
| 354 | int i, srcr, dstr, dstid; |
| 355 | |
| 356 | dstid = rcache_get_arg_id(arg); |
| 357 | dstr = reg_temp[dstid].reg; |
| 358 | |
| 359 | // maybe already statically mapped? |
| 360 | srcr = reg_map_g2h[r]; |
| 361 | if (srcr != -1) |
| 362 | goto do_cache; |
| 363 | |
| 364 | // maybe already cached? |
| 365 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
| 366 | if ((reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) && |
| 367 | reg_temp[i].val == r) |
| 368 | { |
| 369 | srcr = reg_temp[i].reg; |
| 370 | goto do_cache; |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | // must read |
| 375 | srcr = dstr; |
| 376 | emith_ctx_read(srcr, r * 4); |
| 377 | |
| 378 | do_cache: |
| 379 | if (srcr != dstr) |
| 380 | emith_move_r_r(dstr, srcr); |
| 381 | |
| 382 | reg_temp[dstid].stamp = ++rcache_counter; |
| 383 | reg_temp[dstid].type = HR_CACHED; |
| 384 | reg_temp[dstid].val = r; |
| 385 | return dstr; |
| 386 | } |
| 387 | |
| 388 | static void rcache_free_tmp(int hr) |
| 389 | { |
| 390 | int i; |
| 391 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 392 | if (reg_temp[i].reg == hr) |
| 393 | break; |
| 394 | |
| 395 | if (i == ARRAY_SIZE(reg_temp) || reg_temp[i].type != HR_TEMP) { |
| 396 | printf("rcache_free_tmp fail: #%i hr %d, type %d\n", i, hr, reg_temp[i].type); |
| 397 | return; |
| 398 | } |
| 399 | |
| 400 | reg_temp[i].type = HR_FREE; |
| 401 | } |
| 402 | |
| 403 | static void rcache_clean(void) |
| 404 | { |
| 405 | int i; |
| 406 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 407 | if (reg_temp[i].type == HR_CACHED_DIRTY) { |
| 408 | // writeback |
| 409 | emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4); |
| 410 | reg_temp[i].type = HR_CACHED; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | static void rcache_invalidate(void) |
| 415 | { |
| 416 | int i; |
| 417 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 418 | reg_temp[i].type = HR_FREE; |
| 419 | rcache_counter = 0; |
| 420 | } |
| 421 | |
| 422 | static void rcache_flush(void) |
| 423 | { |
| 424 | rcache_clean(); |
| 425 | rcache_invalidate(); |
| 426 | } |
| 427 | |
| 428 | // --------------------------------------------------------------- |
| 429 | |
| 430 | static void emit_move_r_imm32(sh2_reg_e dst, u32 imm) |
| 431 | { |
| 432 | // TODO: propagate this constant |
| 433 | int hr = rcache_get_reg(dst, RC_GR_WRITE); |
| 434 | emith_move_r_imm(hr, imm); |
| 435 | } |
| 436 | |
| 437 | static void emit_move_r_r(sh2_reg_e dst, sh2_reg_e src) |
| 438 | { |
| 439 | int hr_d = rcache_get_reg(dst, RC_GR_WRITE); |
| 440 | int hr_s = rcache_get_reg(src, RC_GR_READ); |
| 441 | |
| 442 | emith_move_r_r(hr_d, hr_s); |
| 443 | } |
| 444 | |
| 445 | // T must be clear, and comparison done just before this |
| 446 | static void emit_or_t_if_eq(int srr) |
| 447 | { |
| 448 | EMITH_SJMP_START(DCOND_NE); |
| 449 | emith_or_r_imm_c(DCOND_EQ, srr, T); |
| 450 | EMITH_SJMP_END(DCOND_NE); |
| 451 | } |
| 452 | |
| 453 | // arguments must be ready |
| 454 | // reg cache must be clean before call |
| 455 | static int emit_memhandler_read(int size) |
| 456 | { |
| 457 | int ctxr; |
| 458 | host_arg2reg(ctxr, 1); |
| 459 | emith_move_r_r(ctxr, CONTEXT_REG); |
| 460 | switch (size) { |
| 461 | case 0: // 8 |
| 462 | emith_call(p32x_sh2_read8); |
| 463 | break; |
| 464 | case 1: // 16 |
| 465 | emith_call(p32x_sh2_read16); |
| 466 | break; |
| 467 | case 2: // 32 |
| 468 | emith_call(p32x_sh2_read32); |
| 469 | break; |
| 470 | } |
| 471 | rcache_invalidate(); |
| 472 | // assuming arg0 and retval reg matches |
| 473 | return rcache_get_tmp_arg(0); |
| 474 | } |
| 475 | |
| 476 | static void emit_memhandler_write(int size) |
| 477 | { |
| 478 | int ctxr; |
| 479 | host_arg2reg(ctxr, 2); |
| 480 | emith_move_r_r(ctxr, CONTEXT_REG); |
| 481 | switch (size) { |
| 482 | case 0: // 8 |
| 483 | emith_call(p32x_sh2_write8); |
| 484 | break; |
| 485 | case 1: // 16 |
| 486 | emith_call(p32x_sh2_write16); |
| 487 | break; |
| 488 | case 2: // 32 |
| 489 | emith_call(p32x_sh2_write32); |
| 490 | break; |
| 491 | } |
| 492 | rcache_invalidate(); |
| 493 | } |
| 494 | |
| 495 | // @(Rx,Ry) |
| 496 | static int emit_indirect_indexed_read(int rx, int ry, int size) |
| 497 | { |
| 498 | int a0, t; |
| 499 | rcache_clean(); |
| 500 | a0 = rcache_get_reg_arg(0, rx); |
| 501 | t = rcache_get_reg(ry, RC_GR_READ); |
| 502 | emith_add_r_r(a0, t); |
| 503 | return emit_memhandler_read(size); |
| 504 | } |
| 505 | |
| 506 | // Rwr -> @(Rx,Ry) |
| 507 | static void emit_indirect_indexed_write(int rx, int ry, int wr, int size) |
| 508 | { |
| 509 | int a0, t; |
| 510 | rcache_clean(); |
| 511 | rcache_get_reg_arg(1, wr); |
| 512 | a0 = rcache_get_reg_arg(0, rx); |
| 513 | t = rcache_get_reg(ry, RC_GR_READ); |
| 514 | emith_add_r_r(a0, t); |
| 515 | emit_memhandler_write(size); |
| 516 | } |
| 517 | |
| 518 | // read @Rn, @rm |
| 519 | static void emit_indirect_read_double(u32 *rnr, u32 *rmr, int rn, int rm, int size) |
| 520 | { |
| 521 | int tmp; |
| 522 | |
| 523 | rcache_clean(); |
| 524 | rcache_get_reg_arg(0, rn); |
| 525 | tmp = emit_memhandler_read(size); |
| 526 | emith_ctx_write(tmp, offsetof(SH2, drc_tmp)); |
| 527 | rcache_free_tmp(tmp); |
| 528 | tmp = rcache_get_reg(rn, RC_GR_RMW); |
| 529 | emith_add_r_imm(tmp, 1 << size); |
| 530 | |
| 531 | rcache_clean(); |
| 532 | rcache_get_reg_arg(0, rm); |
| 533 | *rmr = emit_memhandler_read(size); |
| 534 | *rnr = rcache_get_tmp(); |
| 535 | emith_ctx_read(*rnr, offsetof(SH2, drc_tmp)); |
| 536 | tmp = rcache_get_reg(rm, RC_GR_RMW); |
| 537 | emith_add_r_imm(tmp, 1 << size); |
| 538 | } |
| 539 | |
| 540 | // fixup for saturated MAC, to be called from generated code |
| 541 | // FIXME: statically alloced regs need to be fixed |
| 542 | static void sh2_macl_sat_fixup(void) |
| 543 | { |
| 544 | if ((signed int)sh2->mach < 0 && sh2->mach < 0xffff8000) |
| 545 | { |
| 546 | sh2->mach = 0x00008000; |
| 547 | sh2->macl = 0x00000000; |
| 548 | } |
| 549 | else if ((signed int)sh2->mach > 0 && sh2->mach > 0x00007fff) |
| 550 | { |
| 551 | sh2->mach = 0x00007fff; |
| 552 | sh2->macl = 0xffffffff; |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | static void sh2_macw_sat_fixup(void) |
| 557 | { |
| 558 | signed int t = sh2->mach; |
| 559 | if (t < -1 || (t == -1 && !(sh2->macl & 0x80000000))) |
| 560 | { |
| 561 | sh2->mach = 0xffffffff; // ? |
| 562 | sh2->macl = 0x80000000; |
| 563 | } |
| 564 | else if (t > 0 || (t == 0 && (sh2->macl & 0x80000000))) |
| 565 | { |
| 566 | sh2->mach = 0x7fffffff; |
| 567 | sh2->macl = 0xffffffff; |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | #define DELAYED_OP \ |
| 572 | delayed_op = 2 |
| 573 | |
| 574 | #define CHECK_UNHANDLED_BITS(mask) { \ |
| 575 | if ((op & (mask)) != 0) \ |
| 576 | goto default_; \ |
| 577 | } |
| 578 | |
| 579 | #define GET_Fx() \ |
| 580 | ((op >> 4) & 0x0f) |
| 581 | |
| 582 | #define GET_Rm GET_Fx |
| 583 | |
| 584 | #define GET_Rn() \ |
| 585 | ((op >> 8) & 0x0f) |
| 586 | |
| 587 | #define CHECK_FX_LT(n) \ |
| 588 | if (GET_Fx() >= n) \ |
| 589 | goto default_ |
| 590 | |
| 591 | static void *sh2_translate(SH2 *sh2, block_desc *other_block) |
| 592 | { |
| 593 | void *block_entry; |
| 594 | block_desc *this_block; |
| 595 | unsigned int pc = sh2->pc; |
| 596 | int op, delayed_op = 0, test_irq = 0; |
| 597 | int tcache_id = 0, blkid = 0; |
| 598 | int cycles = 0; |
| 599 | u32 tmp, tmp2, tmp3, tmp4, sr; |
| 600 | |
| 601 | // validate PC |
| 602 | tmp = sh2->pc >> 29; |
| 603 | if ((tmp != 0 && tmp != 1 && tmp != 6) || sh2->pc == 0) { |
| 604 | printf("invalid PC, aborting: %08x\n", sh2->pc); |
| 605 | // FIXME: be less destructive |
| 606 | exit(1); |
| 607 | } |
| 608 | |
| 609 | if ((sh2->pc & 0xe0000000) == 0xc0000000 || (sh2->pc & ~0xfff) == 0) { |
| 610 | // data_array, BIOS have separate tcache (shared) |
| 611 | tcache_id = 1 + sh2->is_slave; |
| 612 | } |
| 613 | |
| 614 | tcache_ptr = tcache_ptrs[tcache_id]; |
| 615 | this_block = dr_add_block(pc, tcache_id, &blkid); |
| 616 | |
| 617 | tmp = tcache_ptr - tcache_bases[tcache_id]; |
| 618 | if (tmp > tcache_sizes[tcache_id] - MAX_BLOCK_SIZE || this_block == NULL) { |
| 619 | flush_tcache(tcache_id); |
| 620 | tcache_ptr = tcache_ptrs[tcache_id]; |
| 621 | other_block = NULL; // also gone too due to flush |
| 622 | this_block = dr_add_block(pc, tcache_id, &blkid); |
| 623 | } |
| 624 | |
| 625 | this_block->next = other_block; |
| 626 | if ((sh2->pc & 0xc6000000) == 0x02000000) // ROM |
| 627 | HASH_FUNC(hash_table, pc) = this_block; |
| 628 | |
| 629 | block_entry = tcache_ptr; |
| 630 | #if (DRC_DEBUG & 1) |
| 631 | printf("== %csh2 block #%d,%d %08x -> %p\n", sh2->is_slave ? 's' : 'm', |
| 632 | tcache_id, block_counts[tcache_id], pc, block_entry); |
| 633 | if (other_block != NULL) { |
| 634 | printf(" hash collision with %08x\n", other_block->addr); |
| 635 | hash_collisions++; |
| 636 | } |
| 637 | #endif |
| 638 | |
| 639 | while (cycles < BLOCK_CYCLE_LIMIT || delayed_op) |
| 640 | { |
| 641 | if (delayed_op > 0) |
| 642 | delayed_op--; |
| 643 | |
| 644 | op = p32x_sh2_read16(pc, sh2); |
| 645 | |
| 646 | #if (DRC_DEBUG & 3) |
| 647 | insns_compiled++; |
| 648 | #if (DRC_DEBUG & 2) |
| 649 | DasmSH2(sh2dasm_buff, pc, op); |
| 650 | printf("%08x %04x %s\n", pc, op, sh2dasm_buff); |
| 651 | #endif |
| 652 | #endif |
| 653 | |
| 654 | pc += 2; |
| 655 | cycles++; |
| 656 | |
| 657 | switch ((op >> 12) & 0x0f) |
| 658 | { |
| 659 | ///////////////////////////////////////////// |
| 660 | case 0x00: |
| 661 | switch (op & 0x0f) |
| 662 | { |
| 663 | case 0x02: |
| 664 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 665 | switch (GET_Fx()) |
| 666 | { |
| 667 | case 0: // STC SR,Rn 0000nnnn00000010 |
| 668 | tmp2 = SHR_SR; |
| 669 | break; |
| 670 | case 1: // STC GBR,Rn 0000nnnn00010010 |
| 671 | tmp2 = SHR_GBR; |
| 672 | break; |
| 673 | case 2: // STC VBR,Rn 0000nnnn00100010 |
| 674 | tmp2 = SHR_VBR; |
| 675 | break; |
| 676 | default: |
| 677 | goto default_; |
| 678 | } |
| 679 | tmp3 = rcache_get_reg(tmp2, RC_GR_READ); |
| 680 | emith_move_r_r(tmp, tmp3); |
| 681 | if (tmp2 == SHR_SR) |
| 682 | emith_clear_msb(tmp, tmp, 20); // reserved bits defined by ISA as 0 |
| 683 | goto end_op; |
| 684 | case 0x03: |
| 685 | CHECK_UNHANDLED_BITS(0xd0); |
| 686 | // BRAF Rm 0000mmmm00100011 |
| 687 | // BSRF Rm 0000mmmm00000011 |
| 688 | DELAYED_OP; |
| 689 | if (!(op & 0x20)) |
| 690 | emit_move_r_imm32(SHR_PR, pc + 2); |
| 691 | tmp = rcache_get_reg(SHR_PPC, RC_GR_WRITE); |
| 692 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 693 | emith_move_r_r(tmp, tmp2); |
| 694 | emith_add_r_imm(tmp, pc + 2); |
| 695 | cycles++; |
| 696 | goto end_op; |
| 697 | case 0x04: // MOV.B Rm,@(R0,Rn) 0000nnnnmmmm0100 |
| 698 | case 0x05: // MOV.W Rm,@(R0,Rn) 0000nnnnmmmm0101 |
| 699 | case 0x06: // MOV.L Rm,@(R0,Rn) 0000nnnnmmmm0110 |
| 700 | emit_indirect_indexed_write(SHR_R0, GET_Rn(), GET_Rm(), op & 3); |
| 701 | goto end_op; |
| 702 | case 0x07: |
| 703 | // MUL.L Rm,Rn 0000nnnnmmmm0111 |
| 704 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 705 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 706 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 707 | emith_mul(tmp3, tmp2, tmp); |
| 708 | cycles++; |
| 709 | goto end_op; |
| 710 | case 0x08: |
| 711 | CHECK_UNHANDLED_BITS(0xf00); |
| 712 | switch (GET_Fx()) |
| 713 | { |
| 714 | case 0: // CLRT 0000000000001000 |
| 715 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 716 | emith_bic_r_imm(tmp, T); |
| 717 | break; |
| 718 | case 1: // SETT 0000000000011000 |
| 719 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 720 | emith_or_r_imm(tmp, T); |
| 721 | break; |
| 722 | case 2: // CLRMAC 0000000000101000 |
| 723 | tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 724 | emith_move_r_imm(tmp, 0); |
| 725 | tmp = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
| 726 | emith_move_r_imm(tmp, 0); |
| 727 | break; |
| 728 | default: |
| 729 | goto default_; |
| 730 | } |
| 731 | goto end_op; |
| 732 | case 0x09: |
| 733 | switch (GET_Fx()) |
| 734 | { |
| 735 | case 0: // NOP 0000000000001001 |
| 736 | CHECK_UNHANDLED_BITS(0xf00); |
| 737 | break; |
| 738 | case 1: // DIV0U 0000000000011001 |
| 739 | CHECK_UNHANDLED_BITS(0xf00); |
| 740 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 741 | emith_bic_r_imm(tmp, M|Q|T); |
| 742 | break; |
| 743 | case 2: // MOVT Rn 0000nnnn00101001 |
| 744 | tmp = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 745 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 746 | emith_clear_msb(tmp2, tmp, 31); |
| 747 | break; |
| 748 | default: |
| 749 | goto default_; |
| 750 | } |
| 751 | goto end_op; |
| 752 | case 0x0a: |
| 753 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 754 | switch (GET_Fx()) |
| 755 | { |
| 756 | case 0: // STS MACH,Rn 0000nnnn00001010 |
| 757 | tmp2 = SHR_MACH; |
| 758 | break; |
| 759 | case 1: // STS MACL,Rn 0000nnnn00011010 |
| 760 | tmp2 = SHR_MACL; |
| 761 | break; |
| 762 | case 2: // STS PR,Rn 0000nnnn00101010 |
| 763 | tmp2 = SHR_PR; |
| 764 | break; |
| 765 | default: |
| 766 | goto default_; |
| 767 | } |
| 768 | tmp2 = rcache_get_reg(tmp2, RC_GR_READ); |
| 769 | emith_move_r_r(tmp, tmp2); |
| 770 | goto end_op; |
| 771 | case 0x0b: |
| 772 | CHECK_UNHANDLED_BITS(0xf00); |
| 773 | switch (GET_Fx()) |
| 774 | { |
| 775 | case 0: // RTS 0000000000001011 |
| 776 | DELAYED_OP; |
| 777 | emit_move_r_r(SHR_PPC, SHR_PR); |
| 778 | cycles++; |
| 779 | break; |
| 780 | case 1: // SLEEP 0000000000011011 |
| 781 | emit_move_r_imm32(SHR_PC, pc - 2); |
| 782 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 783 | emith_clear_msb(tmp, tmp, 20); // clear cycles |
| 784 | test_irq = 1; |
| 785 | cycles = 1; |
| 786 | break; |
| 787 | case 2: // RTE 0000000000101011 |
| 788 | DELAYED_OP; |
| 789 | rcache_clean(); |
| 790 | // pop PC |
| 791 | rcache_get_reg_arg(0, SHR_SP); |
| 792 | tmp = emit_memhandler_read(2); |
| 793 | tmp2 = rcache_get_reg(SHR_PPC, RC_GR_WRITE); |
| 794 | emith_move_r_r(tmp2, tmp); |
| 795 | rcache_free_tmp(tmp); |
| 796 | rcache_clean(); |
| 797 | // pop SR |
| 798 | tmp = rcache_get_reg_arg(0, SHR_SP); |
| 799 | emith_add_r_imm(tmp, 4); |
| 800 | tmp = emit_memhandler_read(2); |
| 801 | emith_write_sr(tmp); |
| 802 | rcache_free_tmp(tmp); |
| 803 | tmp = rcache_get_reg(SHR_SP, RC_GR_RMW); |
| 804 | emith_add_r_imm(tmp, 4*2); |
| 805 | test_irq = 1; |
| 806 | cycles += 3; |
| 807 | break; |
| 808 | default: |
| 809 | goto default_; |
| 810 | } |
| 811 | goto end_op; |
| 812 | case 0x0c: // MOV.B @(R0,Rm),Rn 0000nnnnmmmm1100 |
| 813 | case 0x0d: // MOV.W @(R0,Rm),Rn 0000nnnnmmmm1101 |
| 814 | case 0x0e: // MOV.L @(R0,Rm),Rn 0000nnnnmmmm1110 |
| 815 | tmp = emit_indirect_indexed_read(SHR_R0, GET_Rm(), op & 3); |
| 816 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 817 | if ((op & 3) != 2) { |
| 818 | emith_sext(tmp2, tmp, (op & 1) ? 16 : 8); |
| 819 | } else |
| 820 | emith_move_r_r(tmp2, tmp); |
| 821 | rcache_free_tmp(tmp); |
| 822 | goto end_op; |
| 823 | case 0x0f: // MAC.L @Rm+,@Rn+ 0000nnnnmmmm1111 |
| 824 | emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 2); |
| 825 | tmp3 = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 826 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW); |
| 827 | /* MS 16 MAC bits unused if saturated */ |
| 828 | emith_tst_r_imm(tmp3, S); |
| 829 | EMITH_SJMP_START(DCOND_EQ); |
| 830 | emith_clear_msb_c(DCOND_NE, tmp4, tmp4, 16); |
| 831 | EMITH_SJMP_END(DCOND_EQ); |
| 832 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); // might evict SR |
| 833 | emith_mula_s64(tmp3, tmp4, tmp, tmp2); |
| 834 | rcache_free_tmp(tmp); |
| 835 | rcache_free_tmp(tmp2); |
| 836 | rcache_clean(); |
| 837 | tmp3 = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 838 | emith_tst_r_imm(tmp3, S); |
| 839 | EMITH_SJMP_START(DCOND_EQ); |
| 840 | emith_call_cond(DCOND_NE, sh2_macl_sat_fixup); |
| 841 | EMITH_SJMP_END(DCOND_EQ); |
| 842 | rcache_invalidate(); |
| 843 | cycles += 3; |
| 844 | goto end_op; |
| 845 | } |
| 846 | goto default_; |
| 847 | |
| 848 | ///////////////////////////////////////////// |
| 849 | case 0x01: |
| 850 | // MOV.L Rm,@(disp,Rn) 0001nnnnmmmmdddd |
| 851 | rcache_clean(); |
| 852 | tmp = rcache_get_reg_arg(0, GET_Rn()); |
| 853 | tmp2 = rcache_get_reg_arg(1, GET_Rm()); |
| 854 | emith_add_r_imm(tmp, (op & 0x0f) * 4); |
| 855 | emit_memhandler_write(2); |
| 856 | goto end_op; |
| 857 | |
| 858 | case 0x02: |
| 859 | switch (op & 0x0f) |
| 860 | { |
| 861 | case 0x00: // MOV.B Rm,@Rn 0010nnnnmmmm0000 |
| 862 | case 0x01: // MOV.W Rm,@Rn 0010nnnnmmmm0001 |
| 863 | case 0x02: // MOV.L Rm,@Rn 0010nnnnmmmm0010 |
| 864 | rcache_clean(); |
| 865 | rcache_get_reg_arg(0, GET_Rn()); |
| 866 | rcache_get_reg_arg(1, GET_Rm()); |
| 867 | emit_memhandler_write(op & 3); |
| 868 | goto end_op; |
| 869 | case 0x04: // MOV.B Rm,@–Rn 0010nnnnmmmm0100 |
| 870 | case 0x05: // MOV.W Rm,@–Rn 0010nnnnmmmm0101 |
| 871 | case 0x06: // MOV.L Rm,@–Rn 0010nnnnmmmm0110 |
| 872 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 873 | emith_sub_r_imm(tmp, (1 << (op & 3))); |
| 874 | rcache_clean(); |
| 875 | rcache_get_reg_arg(0, GET_Rn()); |
| 876 | rcache_get_reg_arg(1, GET_Rm()); |
| 877 | emit_memhandler_write(op & 3); |
| 878 | goto end_op; |
| 879 | case 0x07: // DIV0S Rm,Rn 0010nnnnmmmm0111 |
| 880 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 881 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 882 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 883 | emith_bic_r_imm(tmp, M|Q|T); |
| 884 | emith_tst_r_imm(tmp2, (1<<31)); |
| 885 | EMITH_SJMP_START(DCOND_EQ); |
| 886 | emith_or_r_imm_c(DCOND_NE, tmp, Q); |
| 887 | EMITH_SJMP_END(DCOND_EQ); |
| 888 | emith_tst_r_imm(tmp3, (1<<31)); |
| 889 | EMITH_SJMP_START(DCOND_EQ); |
| 890 | emith_or_r_imm_c(DCOND_NE, tmp, M); |
| 891 | EMITH_SJMP_END(DCOND_EQ); |
| 892 | emith_teq_r_r(tmp2, tmp3); |
| 893 | EMITH_SJMP_START(DCOND_PL); |
| 894 | emith_or_r_imm_c(DCOND_MI, tmp, T); |
| 895 | EMITH_SJMP_END(DCOND_PL); |
| 896 | goto end_op; |
| 897 | case 0x08: // TST Rm,Rn 0010nnnnmmmm1000 |
| 898 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 899 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 900 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 901 | emith_bic_r_imm(tmp, T); |
| 902 | emith_tst_r_r(tmp2, tmp3); |
| 903 | emit_or_t_if_eq(tmp); |
| 904 | goto end_op; |
| 905 | case 0x09: // AND Rm,Rn 0010nnnnmmmm1001 |
| 906 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 907 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 908 | emith_and_r_r(tmp, tmp2); |
| 909 | goto end_op; |
| 910 | case 0x0a: // XOR Rm,Rn 0010nnnnmmmm1010 |
| 911 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 912 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 913 | emith_eor_r_r(tmp, tmp2); |
| 914 | goto end_op; |
| 915 | case 0x0b: // OR Rm,Rn 0010nnnnmmmm1011 |
| 916 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 917 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 918 | emith_or_r_r(tmp, tmp2); |
| 919 | goto end_op; |
| 920 | case 0x0c: // CMP/STR Rm,Rn 0010nnnnmmmm1100 |
| 921 | tmp = rcache_get_tmp(); |
| 922 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 923 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 924 | emith_eor_r_r_r(tmp, tmp2, tmp3); |
| 925 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 926 | emith_bic_r_imm(tmp2, T); |
| 927 | emith_tst_r_imm(tmp, 0x000000ff); |
| 928 | emit_or_t_if_eq(tmp); |
| 929 | emith_tst_r_imm(tmp, 0x0000ff00); |
| 930 | emit_or_t_if_eq(tmp); |
| 931 | emith_tst_r_imm(tmp, 0x00ff0000); |
| 932 | emit_or_t_if_eq(tmp); |
| 933 | emith_tst_r_imm(tmp, 0xff000000); |
| 934 | emit_or_t_if_eq(tmp); |
| 935 | rcache_free_tmp(tmp); |
| 936 | goto end_op; |
| 937 | case 0x0d: // XTRCT Rm,Rn 0010nnnnmmmm1101 |
| 938 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 939 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 940 | emith_lsr(tmp, tmp, 16); |
| 941 | emith_or_r_r_lsl(tmp, tmp2, 16); |
| 942 | goto end_op; |
| 943 | case 0x0e: // MULU.W Rm,Rn 0010nnnnmmmm1110 |
| 944 | case 0x0f: // MULS.W Rm,Rn 0010nnnnmmmm1111 |
| 945 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 946 | tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 947 | if (op & 1) { |
| 948 | emith_sext(tmp, tmp2, 16); |
| 949 | } else |
| 950 | emith_clear_msb(tmp, tmp2, 16); |
| 951 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 952 | tmp2 = rcache_get_tmp(); |
| 953 | if (op & 1) { |
| 954 | emith_sext(tmp2, tmp3, 16); |
| 955 | } else |
| 956 | emith_clear_msb(tmp2, tmp3, 16); |
| 957 | emith_mul(tmp, tmp, tmp2); |
| 958 | rcache_free_tmp(tmp2); |
| 959 | // FIXME: causes timing issues in Doom? |
| 960 | // cycles++; |
| 961 | goto end_op; |
| 962 | } |
| 963 | goto default_; |
| 964 | |
| 965 | ///////////////////////////////////////////// |
| 966 | case 0x03: |
| 967 | switch (op & 0x0f) |
| 968 | { |
| 969 | case 0x00: // CMP/EQ Rm,Rn 0011nnnnmmmm0000 |
| 970 | case 0x02: // CMP/HS Rm,Rn 0011nnnnmmmm0010 |
| 971 | case 0x03: // CMP/GE Rm,Rn 0011nnnnmmmm0011 |
| 972 | case 0x06: // CMP/HI Rm,Rn 0011nnnnmmmm0110 |
| 973 | case 0x07: // CMP/GT Rm,Rn 0011nnnnmmmm0111 |
| 974 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 975 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 976 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 977 | emith_bic_r_imm(tmp, T); |
| 978 | emith_cmp_r_r(tmp2, tmp3); |
| 979 | switch (op & 0x07) |
| 980 | { |
| 981 | case 0x00: // CMP/EQ |
| 982 | emit_or_t_if_eq(tmp); |
| 983 | break; |
| 984 | case 0x02: // CMP/HS |
| 985 | EMITH_SJMP_START(DCOND_LO); |
| 986 | emith_or_r_imm_c(DCOND_HS, tmp, T); |
| 987 | EMITH_SJMP_END(DCOND_LO); |
| 988 | break; |
| 989 | case 0x03: // CMP/GE |
| 990 | EMITH_SJMP_START(DCOND_LT); |
| 991 | emith_or_r_imm_c(DCOND_GE, tmp, T); |
| 992 | EMITH_SJMP_END(DCOND_LT); |
| 993 | break; |
| 994 | case 0x06: // CMP/HI |
| 995 | EMITH_SJMP_START(DCOND_LS); |
| 996 | emith_or_r_imm_c(DCOND_HI, tmp, T); |
| 997 | EMITH_SJMP_END(DCOND_LS); |
| 998 | break; |
| 999 | case 0x07: // CMP/GT |
| 1000 | EMITH_SJMP_START(DCOND_LE); |
| 1001 | emith_or_r_imm_c(DCOND_GT, tmp, T); |
| 1002 | EMITH_SJMP_END(DCOND_LE); |
| 1003 | break; |
| 1004 | } |
| 1005 | goto end_op; |
| 1006 | case 0x04: // DIV1 Rm,Rn 0011nnnnmmmm0100 |
| 1007 | // Q1 = carry(Rn = (Rn << 1) | T) |
| 1008 | // if Q ^ M |
| 1009 | // Q2 = carry(Rn += Rm) |
| 1010 | // else |
| 1011 | // Q2 = carry(Rn -= Rm) |
| 1012 | // Q = M ^ Q1 ^ Q2 |
| 1013 | // T = (Q == M) = !(Q ^ M) = !(Q1 ^ Q2) |
| 1014 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1015 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1016 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1017 | emith_set_carry(sr); |
| 1018 | emith_adcf_r_r(tmp2, tmp2); |
| 1019 | emith_carry_to_t(sr, 0); // keep Q1 in T for now |
| 1020 | tmp4 = rcache_get_tmp(); |
| 1021 | emith_and_r_r_imm(tmp4, sr, M); |
| 1022 | emith_eor_r_r_lsr(sr, tmp4, M_SHIFT - Q_SHIFT); // Q ^= M |
| 1023 | rcache_free_tmp(tmp4); |
| 1024 | // add or sub, invert T if carry to get Q1 ^ Q2 |
| 1025 | // in: (Q ^ M) passed in Q, Q1 in T |
| 1026 | emith_sh2_div1_step(tmp2, tmp3, sr); |
| 1027 | emith_bic_r_imm(sr, Q); |
| 1028 | emith_tst_r_imm(sr, M); |
| 1029 | EMITH_SJMP_START(DCOND_EQ); |
| 1030 | emith_or_r_imm_c(DCOND_NE, sr, Q); // Q = M |
| 1031 | EMITH_SJMP_END(DCOND_EQ); |
| 1032 | emith_tst_r_imm(sr, T); |
| 1033 | EMITH_SJMP_START(DCOND_EQ); |
| 1034 | emith_eor_r_imm_c(DCOND_NE, sr, Q); // Q = M ^ Q1 ^ Q2 |
| 1035 | EMITH_SJMP_END(DCOND_EQ); |
| 1036 | emith_eor_r_imm(sr, T); // T = !(Q1 ^ Q2) |
| 1037 | goto end_op; |
| 1038 | case 0x05: // DMULU.L Rm,Rn 0011nnnnmmmm0101 |
| 1039 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1040 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1041 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 1042 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
| 1043 | emith_mul_u64(tmp3, tmp4, tmp, tmp2); |
| 1044 | goto end_op; |
| 1045 | case 0x08: // SUB Rm,Rn 0011nnnnmmmm1000 |
| 1046 | case 0x0c: // ADD Rm,Rn 0011nnnnmmmm1100 |
| 1047 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1048 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1049 | if (op & 4) { |
| 1050 | emith_add_r_r(tmp, tmp2); |
| 1051 | } else |
| 1052 | emith_sub_r_r(tmp, tmp2); |
| 1053 | goto end_op; |
| 1054 | case 0x0a: // SUBC Rm,Rn 0011nnnnmmmm1010 |
| 1055 | case 0x0e: // ADDC Rm,Rn 0011nnnnmmmm1110 |
| 1056 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1057 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1058 | tmp3 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1059 | if (op & 4) { // adc |
| 1060 | emith_set_carry(tmp3); |
| 1061 | emith_adcf_r_r(tmp, tmp2); |
| 1062 | emith_carry_to_t(tmp3, 0); |
| 1063 | } else { |
| 1064 | emith_set_carry_sub(tmp3); |
| 1065 | emith_sbcf_r_r(tmp, tmp2); |
| 1066 | emith_carry_to_t(tmp3, 1); |
| 1067 | } |
| 1068 | goto end_op; |
| 1069 | case 0x0b: // SUBV Rm,Rn 0011nnnnmmmm1011 |
| 1070 | case 0x0f: // ADDV Rm,Rn 0011nnnnmmmm1111 |
| 1071 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1072 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1073 | tmp3 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1074 | emith_bic_r_imm(tmp3, T); |
| 1075 | if (op & 4) { |
| 1076 | emith_addf_r_r(tmp, tmp2); |
| 1077 | } else |
| 1078 | emith_subf_r_r(tmp, tmp2); |
| 1079 | EMITH_SJMP_START(DCOND_VC); |
| 1080 | emith_or_r_imm_c(DCOND_VS, tmp3, T); |
| 1081 | EMITH_SJMP_END(DCOND_VC); |
| 1082 | goto end_op; |
| 1083 | case 0x0d: // DMULS.L Rm,Rn 0011nnnnmmmm1101 |
| 1084 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1085 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1086 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 1087 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
| 1088 | emith_mul_s64(tmp3, tmp4, tmp, tmp2); |
| 1089 | goto end_op; |
| 1090 | } |
| 1091 | goto default_; |
| 1092 | |
| 1093 | ///////////////////////////////////////////// |
| 1094 | case 0x04: |
| 1095 | switch (op & 0x0f) |
| 1096 | { |
| 1097 | case 0x00: |
| 1098 | switch (GET_Fx()) |
| 1099 | { |
| 1100 | case 0: // SHLL Rn 0100nnnn00000000 |
| 1101 | case 2: // SHAL Rn 0100nnnn00100000 |
| 1102 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1103 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1104 | emith_lslf(tmp, tmp, 1); |
| 1105 | emith_carry_to_t(tmp2, 0); |
| 1106 | goto end_op; |
| 1107 | case 1: // DT Rn 0100nnnn00010000 |
| 1108 | if (p32x_sh2_read16(pc, sh2) == 0x8bfd) { // BF #-2 |
| 1109 | emith_sh2_dtbf_loop(); |
| 1110 | goto end_op; |
| 1111 | } |
| 1112 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1113 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1114 | emith_bic_r_imm(tmp2, T); |
| 1115 | emith_subf_r_imm(tmp, 1); |
| 1116 | emit_or_t_if_eq(tmp2); |
| 1117 | goto end_op; |
| 1118 | } |
| 1119 | goto default_; |
| 1120 | case 0x01: |
| 1121 | switch (GET_Fx()) |
| 1122 | { |
| 1123 | case 0: // SHLR Rn 0100nnnn00000001 |
| 1124 | case 2: // SHAR Rn 0100nnnn00100001 |
| 1125 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1126 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1127 | if (op & 0x20) { |
| 1128 | emith_asrf(tmp, tmp, 1); |
| 1129 | } else |
| 1130 | emith_lsrf(tmp, tmp, 1); |
| 1131 | emith_carry_to_t(tmp2, 0); |
| 1132 | goto end_op; |
| 1133 | case 1: // CMP/PZ Rn 0100nnnn00010001 |
| 1134 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1135 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1136 | emith_bic_r_imm(tmp2, T); |
| 1137 | emith_cmp_r_imm(tmp, 0); |
| 1138 | EMITH_SJMP_START(DCOND_LT); |
| 1139 | emith_or_r_imm_c(DCOND_GE, tmp2, T); |
| 1140 | EMITH_SJMP_END(DCOND_LT); |
| 1141 | goto end_op; |
| 1142 | } |
| 1143 | goto default_; |
| 1144 | case 0x02: |
| 1145 | case 0x03: |
| 1146 | switch (op & 0x3f) |
| 1147 | { |
| 1148 | case 0x02: // STS.L MACH,@–Rn 0100nnnn00000010 |
| 1149 | tmp = SHR_MACH; |
| 1150 | break; |
| 1151 | case 0x12: // STS.L MACL,@–Rn 0100nnnn00010010 |
| 1152 | tmp = SHR_MACL; |
| 1153 | break; |
| 1154 | case 0x22: // STS.L PR,@–Rn 0100nnnn00100010 |
| 1155 | tmp = SHR_PR; |
| 1156 | break; |
| 1157 | case 0x03: // STC.L SR,@–Rn 0100nnnn00000011 |
| 1158 | tmp = SHR_SR; |
| 1159 | break; |
| 1160 | case 0x13: // STC.L GBR,@–Rn 0100nnnn00010011 |
| 1161 | tmp = SHR_GBR; |
| 1162 | break; |
| 1163 | case 0x23: // STC.L VBR,@–Rn 0100nnnn00100011 |
| 1164 | tmp = SHR_VBR; |
| 1165 | break; |
| 1166 | default: |
| 1167 | goto default_; |
| 1168 | } |
| 1169 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1170 | emith_sub_r_imm(tmp2, 4); |
| 1171 | rcache_clean(); |
| 1172 | rcache_get_reg_arg(0, GET_Rn()); |
| 1173 | tmp3 = rcache_get_reg_arg(1, tmp); |
| 1174 | if (tmp == SHR_SR) |
| 1175 | emith_clear_msb(tmp3, tmp3, 20); // reserved bits defined by ISA as 0 |
| 1176 | emit_memhandler_write(2); |
| 1177 | goto end_op; |
| 1178 | case 0x04: |
| 1179 | case 0x05: |
| 1180 | switch (op & 0x3f) |
| 1181 | { |
| 1182 | case 0x04: // ROTL Rn 0100nnnn00000100 |
| 1183 | case 0x05: // ROTR Rn 0100nnnn00000101 |
| 1184 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1185 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1186 | if (op & 1) { |
| 1187 | emith_rorf(tmp, tmp, 1); |
| 1188 | } else |
| 1189 | emith_rolf(tmp, tmp, 1); |
| 1190 | emith_carry_to_t(tmp2, 0); |
| 1191 | goto end_op; |
| 1192 | case 0x24: // ROTCL Rn 0100nnnn00100100 |
| 1193 | case 0x25: // ROTCR Rn 0100nnnn00100101 |
| 1194 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1195 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1196 | emith_set_carry(tmp2); |
| 1197 | if (op & 1) { |
| 1198 | emith_rorcf(tmp); |
| 1199 | } else |
| 1200 | emith_rolcf(tmp); |
| 1201 | emith_carry_to_t(tmp2, 0); |
| 1202 | goto end_op; |
| 1203 | case 0x15: // CMP/PL Rn 0100nnnn00010101 |
| 1204 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1205 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1206 | emith_bic_r_imm(tmp2, T); |
| 1207 | emith_cmp_r_imm(tmp, 0); |
| 1208 | EMITH_SJMP_START(DCOND_LE); |
| 1209 | emith_or_r_imm_c(DCOND_GT, tmp2, T); |
| 1210 | EMITH_SJMP_END(DCOND_LE); |
| 1211 | goto end_op; |
| 1212 | } |
| 1213 | goto default_; |
| 1214 | case 0x06: |
| 1215 | case 0x07: |
| 1216 | switch (op & 0x3f) |
| 1217 | { |
| 1218 | case 0x06: // LDS.L @Rm+,MACH 0100mmmm00000110 |
| 1219 | tmp = SHR_MACH; |
| 1220 | break; |
| 1221 | case 0x16: // LDS.L @Rm+,MACL 0100mmmm00010110 |
| 1222 | tmp = SHR_MACL; |
| 1223 | break; |
| 1224 | case 0x26: // LDS.L @Rm+,PR 0100mmmm00100110 |
| 1225 | tmp = SHR_PR; |
| 1226 | break; |
| 1227 | case 0x07: // LDC.L @Rm+,SR 0100mmmm00000111 |
| 1228 | tmp = SHR_SR; |
| 1229 | break; |
| 1230 | case 0x17: // LDC.L @Rm+,GBR 0100mmmm00010111 |
| 1231 | tmp = SHR_GBR; |
| 1232 | break; |
| 1233 | case 0x27: // LDC.L @Rm+,VBR 0100mmmm00100111 |
| 1234 | tmp = SHR_VBR; |
| 1235 | break; |
| 1236 | default: |
| 1237 | goto default_; |
| 1238 | } |
| 1239 | rcache_clean(); |
| 1240 | rcache_get_reg_arg(0, GET_Rn()); |
| 1241 | tmp2 = emit_memhandler_read(2); |
| 1242 | if (tmp == SHR_SR) { |
| 1243 | emith_write_sr(tmp2); |
| 1244 | test_irq = 1; |
| 1245 | } else { |
| 1246 | tmp = rcache_get_reg(tmp, RC_GR_WRITE); |
| 1247 | emith_move_r_r(tmp, tmp2); |
| 1248 | } |
| 1249 | rcache_free_tmp(tmp2); |
| 1250 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1251 | emith_add_r_imm(tmp, 4); |
| 1252 | goto end_op; |
| 1253 | case 0x08: |
| 1254 | case 0x09: |
| 1255 | switch (GET_Fx()) |
| 1256 | { |
| 1257 | case 0: |
| 1258 | // SHLL2 Rn 0100nnnn00001000 |
| 1259 | // SHLR2 Rn 0100nnnn00001001 |
| 1260 | tmp = 2; |
| 1261 | break; |
| 1262 | case 1: |
| 1263 | // SHLL8 Rn 0100nnnn00011000 |
| 1264 | // SHLR8 Rn 0100nnnn00011001 |
| 1265 | tmp = 8; |
| 1266 | break; |
| 1267 | case 2: |
| 1268 | // SHLL16 Rn 0100nnnn00101000 |
| 1269 | // SHLR16 Rn 0100nnnn00101001 |
| 1270 | tmp = 16; |
| 1271 | break; |
| 1272 | default: |
| 1273 | goto default_; |
| 1274 | } |
| 1275 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1276 | if (op & 1) { |
| 1277 | emith_lsr(tmp2, tmp2, tmp); |
| 1278 | } else |
| 1279 | emith_lsl(tmp2, tmp2, tmp); |
| 1280 | goto end_op; |
| 1281 | case 0x0a: |
| 1282 | switch (GET_Fx()) |
| 1283 | { |
| 1284 | case 0: // LDS Rm,MACH 0100mmmm00001010 |
| 1285 | tmp2 = SHR_MACH; |
| 1286 | break; |
| 1287 | case 1: // LDS Rm,MACL 0100mmmm00011010 |
| 1288 | tmp2 = SHR_MACL; |
| 1289 | break; |
| 1290 | case 2: // LDS Rm,PR 0100mmmm00101010 |
| 1291 | tmp2 = SHR_PR; |
| 1292 | break; |
| 1293 | default: |
| 1294 | goto default_; |
| 1295 | } |
| 1296 | emit_move_r_r(tmp2, GET_Rn()); |
| 1297 | goto end_op; |
| 1298 | case 0x0b: |
| 1299 | switch (GET_Fx()) |
| 1300 | { |
| 1301 | case 0: // JSR @Rm 0100mmmm00001011 |
| 1302 | case 2: // JMP @Rm 0100mmmm00101011 |
| 1303 | DELAYED_OP; |
| 1304 | if (!(op & 0x20)) |
| 1305 | emit_move_r_imm32(SHR_PR, pc + 2); |
| 1306 | emit_move_r_r(SHR_PPC, (op >> 8) & 0x0f); |
| 1307 | cycles++; |
| 1308 | break; |
| 1309 | case 1: // TAS.B @Rn 0100nnnn00011011 |
| 1310 | // XXX: is TAS working on 32X? |
| 1311 | rcache_clean(); |
| 1312 | rcache_get_reg_arg(0, GET_Rn()); |
| 1313 | tmp = emit_memhandler_read(0); |
| 1314 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1315 | emith_bic_r_imm(tmp2, T); |
| 1316 | emith_cmp_r_imm(tmp, 0); |
| 1317 | emit_or_t_if_eq(tmp2); |
| 1318 | rcache_clean(); |
| 1319 | emith_or_r_imm(tmp, 0x80); |
| 1320 | tmp2 = rcache_get_tmp_arg(1); // assuming it differs to tmp |
| 1321 | emith_move_r_r(tmp2, tmp); |
| 1322 | rcache_free_tmp(tmp); |
| 1323 | rcache_get_reg_arg(0, GET_Rn()); |
| 1324 | emit_memhandler_write(0); |
| 1325 | cycles += 3; |
| 1326 | break; |
| 1327 | default: |
| 1328 | goto default_; |
| 1329 | } |
| 1330 | goto end_op; |
| 1331 | case 0x0e: |
| 1332 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1333 | switch (GET_Fx()) |
| 1334 | { |
| 1335 | case 0: // LDC Rm,SR 0100mmmm00001110 |
| 1336 | tmp2 = SHR_SR; |
| 1337 | break; |
| 1338 | case 1: // LDC Rm,GBR 0100mmmm00011110 |
| 1339 | tmp2 = SHR_GBR; |
| 1340 | break; |
| 1341 | case 2: // LDC Rm,VBR 0100mmmm00101110 |
| 1342 | tmp2 = SHR_VBR; |
| 1343 | break; |
| 1344 | default: |
| 1345 | goto default_; |
| 1346 | } |
| 1347 | if (tmp2 == SHR_SR) { |
| 1348 | emith_write_sr(tmp); |
| 1349 | test_irq = 1; |
| 1350 | } else { |
| 1351 | tmp2 = rcache_get_reg(tmp2, RC_GR_WRITE); |
| 1352 | emith_move_r_r(tmp2, tmp); |
| 1353 | } |
| 1354 | goto end_op; |
| 1355 | case 0x0f: |
| 1356 | // MAC @Rm+,@Rn+ 0100nnnnmmmm1111 |
| 1357 | emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 1); |
| 1358 | emith_sext(tmp, tmp, 16); |
| 1359 | emith_sext(tmp2, tmp2, 16); |
| 1360 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); |
| 1361 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW); |
| 1362 | emith_mula_s64(tmp3, tmp4, tmp, tmp2); |
| 1363 | rcache_free_tmp(tmp); |
| 1364 | rcache_free_tmp(tmp2); |
| 1365 | rcache_clean(); |
| 1366 | // XXX: MACH should be untouched when S is set? |
| 1367 | tmp3 = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 1368 | emith_tst_r_imm(tmp3, S); |
| 1369 | EMITH_SJMP_START(DCOND_EQ); |
| 1370 | emith_call_cond(DCOND_NE, sh2_macw_sat_fixup); |
| 1371 | EMITH_SJMP_END(DCOND_EQ); |
| 1372 | rcache_invalidate(); |
| 1373 | cycles += 2; |
| 1374 | goto end_op; |
| 1375 | } |
| 1376 | goto default_; |
| 1377 | |
| 1378 | ///////////////////////////////////////////// |
| 1379 | case 0x05: |
| 1380 | // MOV.L @(disp,Rm),Rn 0101nnnnmmmmdddd |
| 1381 | rcache_clean(); |
| 1382 | tmp = rcache_get_reg_arg(0, GET_Rm()); |
| 1383 | emith_add_r_imm(tmp, (op & 0x0f) * 4); |
| 1384 | tmp = emit_memhandler_read(2); |
| 1385 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1386 | emith_move_r_r(tmp2, tmp); |
| 1387 | rcache_free_tmp(tmp); |
| 1388 | goto end_op; |
| 1389 | |
| 1390 | ///////////////////////////////////////////// |
| 1391 | case 0x06: |
| 1392 | switch (op & 0x0f) |
| 1393 | { |
| 1394 | case 0x00: // MOV.B @Rm,Rn 0110nnnnmmmm0000 |
| 1395 | case 0x01: // MOV.W @Rm,Rn 0110nnnnmmmm0001 |
| 1396 | case 0x02: // MOV.L @Rm,Rn 0110nnnnmmmm0010 |
| 1397 | case 0x04: // MOV.B @Rm+,Rn 0110nnnnmmmm0100 |
| 1398 | case 0x05: // MOV.W @Rm+,Rn 0110nnnnmmmm0101 |
| 1399 | case 0x06: // MOV.L @Rm+,Rn 0110nnnnmmmm0110 |
| 1400 | rcache_clean(); |
| 1401 | rcache_get_reg_arg(0, GET_Rm()); |
| 1402 | tmp = emit_memhandler_read(op & 3); |
| 1403 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1404 | if ((op & 3) != 2) { |
| 1405 | emith_sext(tmp2, tmp, (op & 1) ? 16 : 8); |
| 1406 | } else |
| 1407 | emith_move_r_r(tmp2, tmp); |
| 1408 | rcache_free_tmp(tmp); |
| 1409 | if ((op & 7) >= 4 && GET_Rn() != GET_Rm()) { |
| 1410 | tmp = rcache_get_reg(GET_Rm(), RC_GR_RMW); |
| 1411 | emith_add_r_imm(tmp, (1 << (op & 3))); |
| 1412 | } |
| 1413 | goto end_op; |
| 1414 | case 0x03: |
| 1415 | case 0x07 ... 0x0f: |
| 1416 | tmp = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1417 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1418 | switch (op & 0x0f) |
| 1419 | { |
| 1420 | case 0x03: // MOV Rm,Rn 0110nnnnmmmm0011 |
| 1421 | emith_move_r_r(tmp2, tmp); |
| 1422 | break; |
| 1423 | case 0x07: // NOT Rm,Rn 0110nnnnmmmm0111 |
| 1424 | emith_mvn_r_r(tmp2, tmp); |
| 1425 | break; |
| 1426 | case 0x08: // SWAP.B Rm,Rn 0110nnnnmmmm1000 |
| 1427 | tmp3 = tmp2; |
| 1428 | if (tmp == tmp2) |
| 1429 | tmp3 = rcache_get_tmp(); |
| 1430 | tmp4 = rcache_get_tmp(); |
| 1431 | emith_lsr(tmp3, tmp, 16); |
| 1432 | emith_or_r_r_lsl(tmp3, tmp, 24); |
| 1433 | emith_and_r_r_imm(tmp4, tmp, 0xff00); |
| 1434 | emith_or_r_r_lsl(tmp3, tmp4, 8); |
| 1435 | emith_rol(tmp2, tmp3, 16); |
| 1436 | rcache_free_tmp(tmp4); |
| 1437 | if (tmp == tmp2) |
| 1438 | rcache_free_tmp(tmp3); |
| 1439 | break; |
| 1440 | case 0x09: // SWAP.W Rm,Rn 0110nnnnmmmm1001 |
| 1441 | emith_rol(tmp2, tmp, 16); |
| 1442 | break; |
| 1443 | case 0x0a: // NEGC Rm,Rn 0110nnnnmmmm1010 |
| 1444 | tmp3 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1445 | emith_set_carry_sub(tmp3); |
| 1446 | emith_negcf_r_r(tmp2, tmp); |
| 1447 | emith_carry_to_t(tmp3, 1); |
| 1448 | break; |
| 1449 | case 0x0b: // NEG Rm,Rn 0110nnnnmmmm1011 |
| 1450 | emith_neg_r_r(tmp2, tmp); |
| 1451 | break; |
| 1452 | case 0x0c: // EXTU.B Rm,Rn 0110nnnnmmmm1100 |
| 1453 | emith_clear_msb(tmp2, tmp, 24); |
| 1454 | break; |
| 1455 | case 0x0d: // EXTU.W Rm,Rn 0110nnnnmmmm1101 |
| 1456 | emith_clear_msb(tmp2, tmp, 16); |
| 1457 | break; |
| 1458 | case 0x0e: // EXTS.B Rm,Rn 0110nnnnmmmm1110 |
| 1459 | emith_sext(tmp2, tmp, 8); |
| 1460 | break; |
| 1461 | case 0x0f: // EXTS.W Rm,Rn 0110nnnnmmmm1111 |
| 1462 | emith_sext(tmp2, tmp, 16); |
| 1463 | break; |
| 1464 | } |
| 1465 | goto end_op; |
| 1466 | } |
| 1467 | goto default_; |
| 1468 | |
| 1469 | ///////////////////////////////////////////// |
| 1470 | case 0x07: |
| 1471 | // ADD #imm,Rn 0111nnnniiiiiiii |
| 1472 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1473 | if (op & 0x80) { // adding negative |
| 1474 | emith_sub_r_imm(tmp, -op & 0xff); |
| 1475 | } else |
| 1476 | emith_add_r_imm(tmp, op & 0xff); |
| 1477 | goto end_op; |
| 1478 | |
| 1479 | ///////////////////////////////////////////// |
| 1480 | case 0x08: |
| 1481 | switch (op & 0x0f00) |
| 1482 | { |
| 1483 | case 0x0000: // MOV.B R0,@(disp,Rn) 10000000nnnndddd |
| 1484 | case 0x0100: // MOV.W R0,@(disp,Rn) 10000001nnnndddd |
| 1485 | rcache_clean(); |
| 1486 | tmp = rcache_get_reg_arg(0, GET_Rm()); |
| 1487 | tmp2 = rcache_get_reg_arg(1, SHR_R0); |
| 1488 | tmp3 = (op & 0x100) >> 8; |
| 1489 | emith_add_r_imm(tmp, (op & 0x0f) << tmp3); |
| 1490 | emit_memhandler_write(tmp3); |
| 1491 | goto end_op; |
| 1492 | case 0x0400: // MOV.B @(disp,Rm),R0 10000100mmmmdddd |
| 1493 | case 0x0500: // MOV.W @(disp,Rm),R0 10000101mmmmdddd |
| 1494 | rcache_clean(); |
| 1495 | tmp = rcache_get_reg_arg(0, GET_Rm()); |
| 1496 | tmp3 = (op & 0x100) >> 8; |
| 1497 | emith_add_r_imm(tmp, (op & 0x0f) << tmp3); |
| 1498 | tmp = emit_memhandler_read(tmp3); |
| 1499 | tmp2 = rcache_get_reg(0, RC_GR_WRITE); |
| 1500 | emith_sext(tmp2, tmp, 8 << tmp3); |
| 1501 | rcache_free_tmp(tmp); |
| 1502 | goto end_op; |
| 1503 | case 0x0800: // CMP/EQ #imm,R0 10001000iiiiiiii |
| 1504 | // XXX: could use cmn |
| 1505 | tmp = rcache_get_tmp(); |
| 1506 | tmp2 = rcache_get_reg(0, RC_GR_READ); |
| 1507 | tmp3 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1508 | emith_move_r_imm_s8(tmp, op & 0xff); |
| 1509 | emith_bic_r_imm(tmp3, T); |
| 1510 | emith_cmp_r_r(tmp2, tmp); |
| 1511 | emit_or_t_if_eq(tmp3); |
| 1512 | rcache_free_tmp(tmp); |
| 1513 | goto end_op; |
| 1514 | case 0x0d00: // BT/S label 10001101dddddddd |
| 1515 | case 0x0f00: // BF/S label 10001111dddddddd |
| 1516 | DELAYED_OP; |
| 1517 | cycles--; |
| 1518 | // fallthrough |
| 1519 | case 0x0900: // BT label 10001001dddddddd |
| 1520 | case 0x0b00: { // BF label 10001011dddddddd |
| 1521 | // jmp_cond ~ cond when guest doesn't jump |
| 1522 | int jmp_cond = (op & 0x0200) ? DCOND_NE : DCOND_EQ; |
| 1523 | int insn_cond = (op & 0x0200) ? DCOND_EQ : DCOND_NE; |
| 1524 | signed int offs = ((signed int)(op << 24) >> 23); |
| 1525 | tmp = rcache_get_reg(delayed_op ? SHR_PPC : SHR_PC, RC_GR_WRITE); |
| 1526 | emith_move_r_imm(tmp, pc + (delayed_op ? 2 : 0)); |
| 1527 | emith_sh2_test_t(); |
| 1528 | EMITH_SJMP_START(jmp_cond); |
| 1529 | if (!delayed_op) |
| 1530 | offs += 2; |
| 1531 | if (offs < 0) { |
| 1532 | emith_sub_r_imm_c(insn_cond, tmp, -offs); |
| 1533 | } else |
| 1534 | emith_add_r_imm_c(insn_cond, tmp, offs); |
| 1535 | EMITH_SJMP_END(jmp_cond); |
| 1536 | cycles += 2; |
| 1537 | if (!delayed_op) |
| 1538 | goto end_block_btf; |
| 1539 | goto end_op; |
| 1540 | }} |
| 1541 | goto default_; |
| 1542 | |
| 1543 | ///////////////////////////////////////////// |
| 1544 | case 0x09: |
| 1545 | // MOV.W @(disp,PC),Rn 1001nnnndddddddd |
| 1546 | rcache_clean(); |
| 1547 | tmp = rcache_get_tmp_arg(0); |
| 1548 | emith_move_r_imm(tmp, pc + (op & 0xff) * 2 + 2); |
| 1549 | tmp = emit_memhandler_read(1); |
| 1550 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1551 | emith_sext(tmp2, tmp, 16); |
| 1552 | rcache_free_tmp(tmp); |
| 1553 | goto end_op; |
| 1554 | |
| 1555 | ///////////////////////////////////////////// |
| 1556 | case 0x0a: |
| 1557 | // BRA label 1010dddddddddddd |
| 1558 | DELAYED_OP; |
| 1559 | do_bra: |
| 1560 | tmp = ((signed int)(op << 20) >> 19); |
| 1561 | emit_move_r_imm32(SHR_PPC, pc + tmp + 2); |
| 1562 | cycles++; |
| 1563 | break; |
| 1564 | |
| 1565 | ///////////////////////////////////////////// |
| 1566 | case 0x0b: |
| 1567 | // BSR label 1011dddddddddddd |
| 1568 | DELAYED_OP; |
| 1569 | emit_move_r_imm32(SHR_PR, pc + 2); |
| 1570 | goto do_bra; |
| 1571 | |
| 1572 | ///////////////////////////////////////////// |
| 1573 | case 0x0c: |
| 1574 | switch (op & 0x0f00) |
| 1575 | { |
| 1576 | case 0x0000: // MOV.B R0,@(disp,GBR) 11000000dddddddd |
| 1577 | case 0x0100: // MOV.W R0,@(disp,GBR) 11000001dddddddd |
| 1578 | case 0x0200: // MOV.L R0,@(disp,GBR) 11000010dddddddd |
| 1579 | rcache_clean(); |
| 1580 | tmp = rcache_get_reg_arg(0, SHR_GBR); |
| 1581 | tmp2 = rcache_get_reg_arg(1, SHR_R0); |
| 1582 | tmp3 = (op & 0x300) >> 8; |
| 1583 | emith_add_r_imm(tmp, (op & 0xff) << tmp3); |
| 1584 | emit_memhandler_write(tmp3); |
| 1585 | goto end_op; |
| 1586 | case 0x0400: // MOV.B @(disp,GBR),R0 11000100dddddddd |
| 1587 | case 0x0500: // MOV.W @(disp,GBR),R0 11000101dddddddd |
| 1588 | case 0x0600: // MOV.L @(disp,GBR),R0 11000110dddddddd |
| 1589 | rcache_clean(); |
| 1590 | tmp = rcache_get_reg_arg(0, SHR_GBR); |
| 1591 | tmp3 = (op & 0x300) >> 8; |
| 1592 | emith_add_r_imm(tmp, (op & 0xff) << tmp3); |
| 1593 | tmp = emit_memhandler_read(tmp3); |
| 1594 | tmp2 = rcache_get_reg(0, RC_GR_WRITE); |
| 1595 | if (tmp3 != 2) { |
| 1596 | emith_sext(tmp2, tmp, 8 << tmp3); |
| 1597 | } else |
| 1598 | emith_move_r_r(tmp2, tmp); |
| 1599 | rcache_free_tmp(tmp); |
| 1600 | goto end_op; |
| 1601 | case 0x0300: // TRAPA #imm 11000011iiiiiiii |
| 1602 | tmp = rcache_get_reg(SHR_SP, RC_GR_RMW); |
| 1603 | emith_sub_r_imm(tmp, 4*2); |
| 1604 | rcache_clean(); |
| 1605 | // push SR |
| 1606 | tmp = rcache_get_reg_arg(0, SHR_SP); |
| 1607 | emith_add_r_imm(tmp, 4); |
| 1608 | tmp = rcache_get_reg_arg(1, SHR_SR); |
| 1609 | emith_clear_msb(tmp, tmp, 20); |
| 1610 | emit_memhandler_write(2); |
| 1611 | // push PC |
| 1612 | rcache_get_reg_arg(0, SHR_SP); |
| 1613 | tmp = rcache_get_tmp_arg(1); |
| 1614 | emith_move_r_imm(tmp, pc); |
| 1615 | emit_memhandler_write(2); |
| 1616 | // obtain new PC |
| 1617 | tmp = rcache_get_reg_arg(0, SHR_VBR); |
| 1618 | emith_add_r_imm(tmp, (op & 0xff) * 4); |
| 1619 | tmp = emit_memhandler_read(2); |
| 1620 | tmp2 = rcache_get_reg(SHR_PC, RC_GR_WRITE); |
| 1621 | emith_move_r_r(tmp2, tmp); |
| 1622 | rcache_free_tmp(tmp); |
| 1623 | cycles += 7; |
| 1624 | goto end_block_btf; |
| 1625 | case 0x0700: // MOVA @(disp,PC),R0 11000111dddddddd |
| 1626 | emit_move_r_imm32(SHR_R0, (pc + (op & 0xff) * 4 + 2) & ~3); |
| 1627 | goto end_op; |
| 1628 | case 0x0800: // TST #imm,R0 11001000iiiiiiii |
| 1629 | tmp = rcache_get_reg(SHR_R0, RC_GR_READ); |
| 1630 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1631 | emith_bic_r_imm(tmp2, T); |
| 1632 | emith_tst_r_imm(tmp, op & 0xff); |
| 1633 | emit_or_t_if_eq(tmp2); |
| 1634 | goto end_op; |
| 1635 | case 0x0900: // AND #imm,R0 11001001iiiiiiii |
| 1636 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
| 1637 | emith_and_r_imm(tmp, op & 0xff); |
| 1638 | goto end_op; |
| 1639 | case 0x0a00: // XOR #imm,R0 11001010iiiiiiii |
| 1640 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
| 1641 | emith_eor_r_imm(tmp, op & 0xff); |
| 1642 | goto end_op; |
| 1643 | case 0x0b00: // OR #imm,R0 11001011iiiiiiii |
| 1644 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
| 1645 | emith_or_r_imm(tmp, op & 0xff); |
| 1646 | goto end_op; |
| 1647 | case 0x0c00: // TST.B #imm,@(R0,GBR) 11001100iiiiiiii |
| 1648 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1649 | tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1650 | emith_bic_r_imm(tmp2, T); |
| 1651 | emith_tst_r_imm(tmp, op & 0xff); |
| 1652 | emit_or_t_if_eq(tmp2); |
| 1653 | rcache_free_tmp(tmp); |
| 1654 | cycles += 2; |
| 1655 | goto end_op; |
| 1656 | case 0x0d00: // AND.B #imm,@(R0,GBR) 11001101iiiiiiii |
| 1657 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1658 | emith_and_r_imm(tmp, op & 0xff); |
| 1659 | emit_indirect_indexed_write(SHR_R0, SHR_GBR, tmp, 0); |
| 1660 | cycles += 2; |
| 1661 | goto end_op; |
| 1662 | case 0x0e00: // XOR.B #imm,@(R0,GBR) 11001110iiiiiiii |
| 1663 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1664 | emith_eor_r_imm(tmp, op & 0xff); |
| 1665 | emit_indirect_indexed_write(SHR_R0, SHR_GBR, tmp, 0); |
| 1666 | cycles += 2; |
| 1667 | goto end_op; |
| 1668 | case 0x0f00: // OR.B #imm,@(R0,GBR) 11001111iiiiiiii |
| 1669 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1670 | emith_or_r_imm(tmp, op & 0xff); |
| 1671 | emit_indirect_indexed_write(SHR_R0, SHR_GBR, tmp, 0); |
| 1672 | cycles += 2; |
| 1673 | goto end_op; |
| 1674 | } |
| 1675 | goto default_; |
| 1676 | |
| 1677 | ///////////////////////////////////////////// |
| 1678 | case 0x0d: |
| 1679 | // MOV.L @(disp,PC),Rn 1101nnnndddddddd |
| 1680 | rcache_clean(); |
| 1681 | tmp = rcache_get_tmp_arg(0); |
| 1682 | emith_move_r_imm(tmp, (pc + (op & 0xff) * 4 + 2) & ~3); |
| 1683 | tmp = emit_memhandler_read(2); |
| 1684 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1685 | emith_move_r_r(tmp2, tmp); |
| 1686 | rcache_free_tmp(tmp); |
| 1687 | goto end_op; |
| 1688 | |
| 1689 | ///////////////////////////////////////////// |
| 1690 | case 0x0e: |
| 1691 | // MOV #imm,Rn 1110nnnniiiiiiii |
| 1692 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1693 | emith_move_r_imm_s8(tmp, op & 0xff); |
| 1694 | goto end_op; |
| 1695 | |
| 1696 | default: |
| 1697 | default_: |
| 1698 | elprintf(EL_ANOMALY, "%csh2 drc: unhandled op %04x @ %08x", |
| 1699 | sh2->is_slave ? 's' : 'm', op, pc - 2); |
| 1700 | #ifdef DRC_DEBUG_INTERP |
| 1701 | emit_move_r_imm32(SHR_PC, pc - 2); |
| 1702 | rcache_flush(); |
| 1703 | emith_pass_arg_r(0, CONTEXT_REG); |
| 1704 | emith_pass_arg_imm(1, op); |
| 1705 | emith_call(sh2_do_op); |
| 1706 | #endif |
| 1707 | break; |
| 1708 | } |
| 1709 | |
| 1710 | end_op: |
| 1711 | if (delayed_op == 1) |
| 1712 | emit_move_r_r(SHR_PC, SHR_PPC); |
| 1713 | |
| 1714 | if (test_irq && delayed_op != 2) { |
| 1715 | if (!delayed_op) |
| 1716 | emit_move_r_imm32(SHR_PC, pc); |
| 1717 | rcache_flush(); |
| 1718 | emith_pass_arg_r(0, CONTEXT_REG); |
| 1719 | emith_call(sh2_test_irq); |
| 1720 | goto end_block_btf; |
| 1721 | } |
| 1722 | if (delayed_op == 1) |
| 1723 | break; |
| 1724 | |
| 1725 | do_host_disasm(tcache_id); |
| 1726 | } |
| 1727 | |
| 1728 | // delayed_op means some kind of branch - PC already handled |
| 1729 | if (!delayed_op) |
| 1730 | emit_move_r_imm32(SHR_PC, pc); |
| 1731 | |
| 1732 | end_block_btf: |
| 1733 | this_block->end_addr = pc; |
| 1734 | |
| 1735 | // mark memory blocks as containing compiled code |
| 1736 | if ((sh2->pc & 0xe0000000) == 0xc0000000 || (sh2->pc & ~0xfff) == 0) { |
| 1737 | // data array, BIOS |
| 1738 | u16 *drcblk = Pico32xMem->drcblk_da[sh2->is_slave]; |
| 1739 | tmp = (this_block->addr & 0xfff) >> SH2_DRCBLK_DA_SHIFT; |
| 1740 | tmp2 = (this_block->end_addr & 0xfff) >> SH2_DRCBLK_DA_SHIFT; |
| 1741 | Pico32xMem->drcblk_da[sh2->is_slave][tmp] = (blkid << 1) | 1; |
| 1742 | for (++tmp; tmp < tmp2; tmp++) { |
| 1743 | if (drcblk[tmp]) |
| 1744 | break; // dont overwrite overlay block |
| 1745 | drcblk[tmp] = blkid << 1; |
| 1746 | } |
| 1747 | } |
| 1748 | else if ((this_block->addr & 0xc7fc0000) == 0x06000000) { // DRAM |
| 1749 | tmp = (this_block->addr & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT; |
| 1750 | tmp2 = (this_block->end_addr & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT; |
| 1751 | Pico32xMem->drcblk_ram[tmp] = (blkid << 1) | 1; |
| 1752 | for (++tmp; tmp < tmp2; tmp++) { |
| 1753 | if (Pico32xMem->drcblk_ram[tmp]) |
| 1754 | break; |
| 1755 | Pico32xMem->drcblk_ram[tmp] = blkid << 1; |
| 1756 | } |
| 1757 | } |
| 1758 | |
| 1759 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1760 | emith_sub_r_imm(tmp, cycles << 12); |
| 1761 | rcache_flush(); |
| 1762 | emith_jump(sh2_drc_exit); |
| 1763 | tcache_ptrs[tcache_id] = tcache_ptr; |
| 1764 | |
| 1765 | #ifdef ARM |
| 1766 | cache_flush_d_inval_i(block_entry, tcache_ptr); |
| 1767 | #endif |
| 1768 | |
| 1769 | do_host_disasm(tcache_id); |
| 1770 | dbg(1, " block #%d,%d tcache %d/%d, insns %d -> %d %.3f", |
| 1771 | tcache_id, block_counts[tcache_id], |
| 1772 | tcache_ptr - tcache_bases[tcache_id], tcache_sizes[tcache_id], |
| 1773 | insns_compiled, host_insn_count, (double)host_insn_count / insns_compiled); |
| 1774 | if ((sh2->pc & 0xc6000000) == 0x02000000) // ROM |
| 1775 | dbg(1, " hash collisions %d/%d", hash_collisions, block_counts[tcache_id]); |
| 1776 | #if (DRC_DEBUG & 2) |
| 1777 | fflush(stdout); |
| 1778 | #endif |
| 1779 | |
| 1780 | return block_entry; |
| 1781 | /* |
| 1782 | unimplemented: |
| 1783 | // last op |
| 1784 | do_host_disasm(tcache_id); |
| 1785 | exit(1); |
| 1786 | */ |
| 1787 | } |
| 1788 | |
| 1789 | void __attribute__((noinline)) sh2_drc_dispatcher(SH2 *sh2) |
| 1790 | { |
| 1791 | // TODO: need to handle self-caused interrupts |
| 1792 | sh2_test_irq(sh2); |
| 1793 | |
| 1794 | while (((signed int)sh2->sr >> 12) > 0) |
| 1795 | { |
| 1796 | void *block = NULL; |
| 1797 | block_desc *bd = NULL; |
| 1798 | |
| 1799 | // FIXME: must avoid doing it so often.. |
| 1800 | //sh2_test_irq(sh2); |
| 1801 | |
| 1802 | // we have full block id tables for data_array and RAM |
| 1803 | // BIOS goes to data_array table too |
| 1804 | if ((sh2->pc & 0xff000000) == 0xc0000000 || (sh2->pc & ~0xfff) == 0) { |
| 1805 | int blkid = Pico32xMem->drcblk_da[sh2->is_slave][(sh2->pc & 0xfff) >> SH2_DRCBLK_DA_SHIFT]; |
| 1806 | if (blkid & 1) { |
| 1807 | bd = &block_tables[1 + sh2->is_slave][blkid >> 1]; |
| 1808 | block = bd->tcache_ptr; |
| 1809 | } |
| 1810 | } |
| 1811 | // RAM |
| 1812 | else if ((sh2->pc & 0xc6000000) == 0x06000000) { |
| 1813 | int blkid = Pico32xMem->drcblk_ram[(sh2->pc & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT]; |
| 1814 | if (blkid & 1) { |
| 1815 | bd = &block_tables[0][blkid >> 1]; |
| 1816 | block = bd->tcache_ptr; |
| 1817 | } |
| 1818 | } |
| 1819 | // ROM |
| 1820 | else if ((sh2->pc & 0xc6000000) == 0x02000000) { |
| 1821 | bd = HASH_FUNC(hash_table, sh2->pc); |
| 1822 | |
| 1823 | if (bd != NULL) { |
| 1824 | if (bd->addr == sh2->pc) |
| 1825 | block = bd->tcache_ptr; |
| 1826 | else |
| 1827 | block = dr_find_block(bd, sh2->pc); |
| 1828 | } |
| 1829 | } |
| 1830 | |
| 1831 | if (block == NULL) |
| 1832 | block = sh2_translate(sh2, bd); |
| 1833 | |
| 1834 | dbg(4, "= %csh2 enter %08x %p, c=%d", sh2->is_slave ? 's' : 'm', |
| 1835 | sh2->pc, block, (signed int)sh2->sr >> 12); |
| 1836 | #if (DRC_DEBUG & 1) |
| 1837 | if (bd != NULL) |
| 1838 | bd->refcount++; |
| 1839 | #endif |
| 1840 | sh2_drc_entry(sh2, block); |
| 1841 | } |
| 1842 | } |
| 1843 | |
| 1844 | static void sh2_smc_rm_block(u16 *drcblk, u16 *p, block_desc *btab, u32 a) |
| 1845 | { |
| 1846 | u16 id = *p >> 1; |
| 1847 | block_desc *bd = btab + id; |
| 1848 | |
| 1849 | dbg(1, " killing block %08x", bd->addr); |
| 1850 | bd->addr = bd->end_addr = 0; |
| 1851 | |
| 1852 | while (p > drcblk && (p[-1] >> 1) == id) |
| 1853 | p--; |
| 1854 | |
| 1855 | // check for possible overlay block |
| 1856 | if (p > 0 && p[-1] != 0) { |
| 1857 | bd = btab + (p[-1] >> 1); |
| 1858 | if (bd->addr <= a && a < bd->end_addr) |
| 1859 | sh2_smc_rm_block(drcblk, p - 1, btab, a); |
| 1860 | } |
| 1861 | |
| 1862 | do { |
| 1863 | *p++ = 0; |
| 1864 | } |
| 1865 | while ((*p >> 1) == id); |
| 1866 | } |
| 1867 | |
| 1868 | void sh2_drc_wcheck_ram(unsigned int a, int val, int cpuid) |
| 1869 | { |
| 1870 | u16 *drcblk = Pico32xMem->drcblk_ram; |
| 1871 | u16 *p = drcblk + ((a & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT); |
| 1872 | |
| 1873 | dbg(1, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); |
| 1874 | sh2_smc_rm_block(drcblk, p, block_tables[0], a); |
| 1875 | } |
| 1876 | |
| 1877 | void sh2_drc_wcheck_da(unsigned int a, int val, int cpuid) |
| 1878 | { |
| 1879 | u16 *drcblk = Pico32xMem->drcblk_da[cpuid]; |
| 1880 | u16 *p = drcblk + ((a & 0xfff) >> SH2_DRCBLK_DA_SHIFT); |
| 1881 | |
| 1882 | dbg(1, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); |
| 1883 | sh2_smc_rm_block(drcblk, p, block_tables[1 + cpuid], a); |
| 1884 | } |
| 1885 | |
| 1886 | void sh2_execute(SH2 *sh2c, int cycles) |
| 1887 | { |
| 1888 | sh2 = sh2c; // XXX |
| 1889 | |
| 1890 | sh2c->cycles_aim += cycles; |
| 1891 | cycles = sh2c->cycles_aim - sh2c->cycles_done; |
| 1892 | |
| 1893 | // cycles are kept in SHR_SR unused bits (upper 20) |
| 1894 | sh2c->sr &= 0x3f3; |
| 1895 | sh2c->sr |= cycles << 12; |
| 1896 | sh2_drc_dispatcher(sh2c); |
| 1897 | |
| 1898 | sh2c->cycles_done += cycles - ((signed int)sh2c->sr >> 12); |
| 1899 | } |
| 1900 | |
| 1901 | static void REGPARM(1) sh2_test_irq(SH2 *sh2) |
| 1902 | { |
| 1903 | if (sh2->pending_level > ((sh2->sr >> 4) & 0x0f)) |
| 1904 | { |
| 1905 | if (sh2->pending_irl > sh2->pending_int_irq) |
| 1906 | sh2_do_irq(sh2, sh2->pending_irl, 64 + sh2->pending_irl/2); |
| 1907 | else { |
| 1908 | sh2_do_irq(sh2, sh2->pending_int_irq, sh2->pending_int_vector); |
| 1909 | sh2->pending_int_irq = 0; // auto-clear |
| 1910 | sh2->pending_level = sh2->pending_irl; |
| 1911 | } |
| 1912 | } |
| 1913 | } |
| 1914 | |
| 1915 | #if (DRC_DEBUG & 1) |
| 1916 | static void block_stats(void) |
| 1917 | { |
| 1918 | int c, b, i, total = 0; |
| 1919 | |
| 1920 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) |
| 1921 | for (i = 0; i < block_counts[b]; i++) |
| 1922 | if (block_tables[b][i].addr != 0) |
| 1923 | total += block_tables[b][i].refcount; |
| 1924 | |
| 1925 | for (c = 0; c < 10; c++) { |
| 1926 | block_desc *blk, *maxb = NULL; |
| 1927 | int max = 0; |
| 1928 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) { |
| 1929 | for (i = 0; i < block_counts[b]; i++) { |
| 1930 | blk = &block_tables[b][i]; |
| 1931 | if (blk->addr != 0 && blk->refcount > max) { |
| 1932 | max = blk->refcount; |
| 1933 | maxb = blk; |
| 1934 | } |
| 1935 | } |
| 1936 | } |
| 1937 | if (maxb == NULL) |
| 1938 | break; |
| 1939 | printf("%08x %9d %2.3f%%\n", maxb->addr, maxb->refcount, |
| 1940 | (double)maxb->refcount / total * 100.0); |
| 1941 | maxb->refcount = 0; |
| 1942 | } |
| 1943 | |
| 1944 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) |
| 1945 | for (i = 0; i < block_counts[b]; i++) |
| 1946 | block_tables[b][i].refcount = 0; |
| 1947 | } |
| 1948 | #else |
| 1949 | #define block_stats() |
| 1950 | #endif |
| 1951 | |
| 1952 | void sh2_drc_flush_all(void) |
| 1953 | { |
| 1954 | block_stats(); |
| 1955 | flush_tcache(0); |
| 1956 | flush_tcache(1); |
| 1957 | flush_tcache(2); |
| 1958 | } |
| 1959 | |
| 1960 | int sh2_drc_init(SH2 *sh2) |
| 1961 | { |
| 1962 | if (block_tables[0] == NULL) { |
| 1963 | int i, cnt; |
| 1964 | |
| 1965 | drc_cmn_init(); |
| 1966 | |
| 1967 | cnt = block_max_counts[0] + block_max_counts[1] + block_max_counts[2]; |
| 1968 | block_tables[0] = calloc(cnt, sizeof(*block_tables[0])); |
| 1969 | if (block_tables[0] == NULL) |
| 1970 | return -1; |
| 1971 | |
| 1972 | memset(block_counts, 0, sizeof(block_counts)); |
| 1973 | tcache_bases[0] = tcache_ptrs[0] = tcache; |
| 1974 | |
| 1975 | for (i = 1; i < ARRAY_SIZE(block_tables); i++) { |
| 1976 | block_tables[i] = block_tables[i - 1] + block_max_counts[i - 1]; |
| 1977 | tcache_bases[i] = tcache_ptrs[i] = tcache_bases[i - 1] + tcache_sizes[i - 1]; |
| 1978 | } |
| 1979 | |
| 1980 | // tmp |
| 1981 | PicoOpt |= POPT_DIS_VDP_FIFO; |
| 1982 | |
| 1983 | #if (DRC_DEBUG & 2) |
| 1984 | for (i = 0; i < ARRAY_SIZE(block_tables); i++) |
| 1985 | tcache_dsm_ptrs[i] = tcache_bases[i]; |
| 1986 | #endif |
| 1987 | #if (DRC_DEBUG & 1) |
| 1988 | hash_collisions = 0; |
| 1989 | #endif |
| 1990 | } |
| 1991 | |
| 1992 | if (hash_table == NULL) { |
| 1993 | hash_table = calloc(sizeof(hash_table[0]), MAX_HASH_ENTRIES); |
| 1994 | if (hash_table == NULL) |
| 1995 | return -1; |
| 1996 | } |
| 1997 | |
| 1998 | return 0; |
| 1999 | } |
| 2000 | |
| 2001 | void sh2_drc_finish(SH2 *sh2) |
| 2002 | { |
| 2003 | if (block_tables[0] != NULL) { |
| 2004 | block_stats(); |
| 2005 | free(block_tables[0]); |
| 2006 | memset(block_tables, 0, sizeof(block_tables)); |
| 2007 | |
| 2008 | drc_cmn_cleanup(); |
| 2009 | } |
| 2010 | |
| 2011 | if (hash_table != NULL) { |
| 2012 | free(hash_table); |
| 2013 | hash_table = NULL; |
| 2014 | } |
| 2015 | } |