| 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 | // debug stuff { |
| 15 | #ifndef DRC_DEBUG |
| 16 | #define DRC_DEBUG 0 |
| 17 | #endif |
| 18 | |
| 19 | #if DRC_DEBUG |
| 20 | #define dbg(l,...) { \ |
| 21 | if ((l) & DRC_DEBUG) \ |
| 22 | elprintf(EL_STATUS, ##__VA_ARGS__); \ |
| 23 | } |
| 24 | |
| 25 | #include "mame/sh2dasm.h" |
| 26 | #include <platform/linux/host_dasm.h> |
| 27 | static int insns_compiled, hash_collisions, host_insn_count; |
| 28 | #define COUNT_OP \ |
| 29 | host_insn_count++ |
| 30 | #else // !DRC_DEBUG |
| 31 | #define COUNT_OP |
| 32 | #define dbg(...) |
| 33 | #endif |
| 34 | |
| 35 | #if (DRC_DEBUG & 2) |
| 36 | static u8 *tcache_dsm_ptrs[3]; |
| 37 | static char sh2dasm_buff[64]; |
| 38 | #define do_host_disasm(tcid) \ |
| 39 | host_dasm(tcache_dsm_ptrs[tcid], tcache_ptr - tcache_dsm_ptrs[tcid]); \ |
| 40 | tcache_dsm_ptrs[tcid] = tcache_ptr |
| 41 | #else |
| 42 | #define do_host_disasm(x) |
| 43 | #endif |
| 44 | // } debug |
| 45 | |
| 46 | #define BLOCK_CYCLE_LIMIT 100 |
| 47 | #define MAX_BLOCK_SIZE (BLOCK_CYCLE_LIMIT * 6 * 6) |
| 48 | |
| 49 | // we have 3 translation cache buffers, split from one drc/cmn buffer. |
| 50 | // BIOS shares tcache with data array because it's only used for init |
| 51 | // and can be discarded early |
| 52 | // XXX: need to tune sizes |
| 53 | static const int tcache_sizes[3] = { |
| 54 | DRC_TCACHE_SIZE * 6 / 8, // ROM, DRAM |
| 55 | DRC_TCACHE_SIZE / 8, // BIOS, data array in master sh2 |
| 56 | DRC_TCACHE_SIZE / 8, // ... slave |
| 57 | }; |
| 58 | |
| 59 | static u8 *tcache_bases[3]; |
| 60 | static u8 *tcache_ptrs[3]; |
| 61 | |
| 62 | // ptr for code emiters |
| 63 | static u8 *tcache_ptr; |
| 64 | |
| 65 | // host register tracking |
| 66 | enum { |
| 67 | HR_FREE, |
| 68 | HR_CACHED, // 'val' has sh2_reg_e |
| 69 | HR_CACHED_DIRTY, |
| 70 | HR_CONST, // 'val' has constant |
| 71 | HR_TEMP, // reg used for temp storage |
| 72 | }; |
| 73 | |
| 74 | typedef struct { |
| 75 | u8 reg; |
| 76 | u8 type; |
| 77 | u16 stamp; // kind of a timestamp |
| 78 | u32 val; |
| 79 | } temp_reg_t; |
| 80 | |
| 81 | // note: reg_temp[] must have at least the amount of |
| 82 | // registers used by handlers in worst case (currently 4) |
| 83 | #ifdef ARM |
| 84 | #include "../drc/emit_arm.c" |
| 85 | |
| 86 | static const int reg_map_g2h[] = { |
| 87 | 4, 5, 6, 7, |
| 88 | 8, -1, -1, -1, |
| 89 | -1, -1, -1, -1, |
| 90 | -1, -1, -1, 9, |
| 91 | -1, -1, -1, 10, |
| 92 | -1, -1, -1, -1, |
| 93 | }; |
| 94 | |
| 95 | static temp_reg_t reg_temp[] = { |
| 96 | { 0, }, |
| 97 | { 1, }, |
| 98 | { 12, }, |
| 99 | { 14, }, |
| 100 | { 2, }, |
| 101 | { 3, }, |
| 102 | }; |
| 103 | |
| 104 | #else |
| 105 | #include "../drc/emit_x86.c" |
| 106 | |
| 107 | static const int reg_map_g2h[] = { |
| 108 | xSI,-1, -1, -1, |
| 109 | -1, -1, -1, -1, |
| 110 | -1, -1, -1, -1, |
| 111 | -1, -1, -1, -1, |
| 112 | -1, -1, -1, xDI, |
| 113 | -1, -1, -1, -1, |
| 114 | }; |
| 115 | |
| 116 | // ax, cx, dx are usually temporaries by convention |
| 117 | static temp_reg_t reg_temp[] = { |
| 118 | { xAX, }, |
| 119 | { xBX, }, |
| 120 | { xCX, }, |
| 121 | { xDX, }, |
| 122 | }; |
| 123 | |
| 124 | #endif |
| 125 | |
| 126 | #define T 0x00000001 |
| 127 | #define S 0x00000002 |
| 128 | #define I 0x000000f0 |
| 129 | #define Q 0x00000100 |
| 130 | #define M 0x00000200 |
| 131 | #define T_save 0x00000800 |
| 132 | |
| 133 | #define Q_SHIFT 8 |
| 134 | #define M_SHIFT 9 |
| 135 | |
| 136 | typedef struct block_desc_ { |
| 137 | u32 addr; // SH2 PC address |
| 138 | u32 end_addr; // TODO rm? |
| 139 | void *tcache_ptr; // translated block for above PC |
| 140 | struct block_desc_ *next; // next block with the same PC hash |
| 141 | #if (DRC_DEBUG & 1) |
| 142 | int refcount; |
| 143 | #endif |
| 144 | } block_desc; |
| 145 | |
| 146 | static const int block_max_counts[3] = { |
| 147 | 4*1024, |
| 148 | 256, |
| 149 | 256, |
| 150 | }; |
| 151 | static block_desc *block_tables[3]; |
| 152 | static int block_counts[3]; |
| 153 | |
| 154 | // ROM hash table |
| 155 | #define MAX_HASH_ENTRIES 1024 |
| 156 | #define HASH_MASK (MAX_HASH_ENTRIES - 1) |
| 157 | static void **hash_table; |
| 158 | |
| 159 | #define HASH_FUNC(hash_tab, addr) \ |
| 160 | ((block_desc **)(hash_tab))[(addr) & HASH_MASK] |
| 161 | |
| 162 | static void REGPARM(2) (*sh2_drc_entry)(const void *block, SH2 *sh2); |
| 163 | static void (*sh2_drc_exit)(void); |
| 164 | |
| 165 | // tmp |
| 166 | extern void REGPARM(2) sh2_do_op(SH2 *sh2, int opcode); |
| 167 | static void REGPARM(1) sh2_test_irq(SH2 *sh2); |
| 168 | |
| 169 | static void flush_tcache(int tcid) |
| 170 | { |
| 171 | dbg(1, "tcache #%d flush! (%d/%d, bds %d/%d)", tcid, |
| 172 | tcache_ptrs[tcid] - tcache_bases[tcid], tcache_sizes[tcid], |
| 173 | block_counts[tcid], block_max_counts[tcid]); |
| 174 | |
| 175 | block_counts[tcid] = 0; |
| 176 | tcache_ptrs[tcid] = tcache_bases[tcid]; |
| 177 | if (tcid == 0) { // ROM, RAM |
| 178 | memset(hash_table, 0, sizeof(hash_table[0]) * MAX_HASH_ENTRIES); |
| 179 | memset(Pico32xMem->drcblk_ram, 0, sizeof(Pico32xMem->drcblk_ram)); |
| 180 | } |
| 181 | else |
| 182 | memset(Pico32xMem->drcblk_da[tcid - 1], 0, sizeof(Pico32xMem->drcblk_da[0])); |
| 183 | #if (DRC_DEBUG & 2) |
| 184 | tcache_dsm_ptrs[tcid] = tcache_bases[tcid]; |
| 185 | #endif |
| 186 | } |
| 187 | |
| 188 | static void *dr_find_block(block_desc *tab, u32 addr) |
| 189 | { |
| 190 | for (tab = tab->next; tab != NULL; tab = tab->next) |
| 191 | if (tab->addr == addr) |
| 192 | break; |
| 193 | |
| 194 | if (tab != NULL) |
| 195 | return tab->tcache_ptr; |
| 196 | |
| 197 | printf("block miss for %08x\n", addr); |
| 198 | return NULL; |
| 199 | } |
| 200 | |
| 201 | static block_desc *dr_add_block(u32 addr, int tcache_id, int *blk_id) |
| 202 | { |
| 203 | int *bcount = &block_counts[tcache_id]; |
| 204 | block_desc *bd; |
| 205 | |
| 206 | if (*bcount >= block_max_counts[tcache_id]) |
| 207 | return NULL; |
| 208 | |
| 209 | bd = &block_tables[tcache_id][*bcount]; |
| 210 | bd->addr = addr; |
| 211 | bd->tcache_ptr = tcache_ptr; |
| 212 | *blk_id = *bcount; |
| 213 | (*bcount)++; |
| 214 | |
| 215 | if ((addr & 0xc6000000) == 0x02000000) { // ROM |
| 216 | bd->next = HASH_FUNC(hash_table, addr); |
| 217 | HASH_FUNC(hash_table, addr) = bd; |
| 218 | #if (DRC_DEBUG & 1) |
| 219 | if (bd->next != NULL) { |
| 220 | printf(" hash collision with %08x\n", bd->next->addr); |
| 221 | hash_collisions++; |
| 222 | } |
| 223 | #endif |
| 224 | } |
| 225 | |
| 226 | return bd; |
| 227 | } |
| 228 | |
| 229 | int find_in_array(u32 *array, size_t size, u32 what) |
| 230 | { |
| 231 | size_t i; |
| 232 | for (i = 0; i < size; i++) |
| 233 | if (what == array[i]) |
| 234 | return i; |
| 235 | |
| 236 | return -1; |
| 237 | } |
| 238 | |
| 239 | // --------------------------------------------------------------- |
| 240 | |
| 241 | // register chache |
| 242 | static u16 rcache_counter; |
| 243 | |
| 244 | static temp_reg_t *rcache_evict(void) |
| 245 | { |
| 246 | // evict reg with oldest stamp |
| 247 | int i, oldest = -1; |
| 248 | u16 min_stamp = (u16)-1; |
| 249 | |
| 250 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) { |
| 251 | if (reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) |
| 252 | if (reg_temp[i].stamp <= min_stamp) { |
| 253 | min_stamp = reg_temp[i].stamp; |
| 254 | oldest = i; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | if (oldest == -1) { |
| 259 | printf("no registers to evict, aborting\n"); |
| 260 | exit(1); |
| 261 | } |
| 262 | |
| 263 | i = oldest; |
| 264 | if (reg_temp[i].type == HR_CACHED_DIRTY) { |
| 265 | // writeback |
| 266 | emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4); |
| 267 | } |
| 268 | |
| 269 | return ®_temp[i]; |
| 270 | } |
| 271 | |
| 272 | typedef enum { |
| 273 | RC_GR_READ, |
| 274 | RC_GR_WRITE, |
| 275 | RC_GR_RMW, |
| 276 | } rc_gr_mode; |
| 277 | |
| 278 | // note: must not be called when doing conditional code |
| 279 | static int rcache_get_reg(sh2_reg_e r, rc_gr_mode mode) |
| 280 | { |
| 281 | temp_reg_t *tr; |
| 282 | int i; |
| 283 | |
| 284 | // maybe already statically mapped? |
| 285 | i = reg_map_g2h[r]; |
| 286 | if (i != -1) |
| 287 | return i; |
| 288 | |
| 289 | rcache_counter++; |
| 290 | |
| 291 | // maybe already cached? |
| 292 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
| 293 | if ((reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) && |
| 294 | reg_temp[i].val == r) |
| 295 | { |
| 296 | reg_temp[i].stamp = rcache_counter; |
| 297 | if (mode != RC_GR_READ) |
| 298 | reg_temp[i].type = HR_CACHED_DIRTY; |
| 299 | return reg_temp[i].reg; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | // use any free reg |
| 304 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
| 305 | if (reg_temp[i].type == HR_FREE || reg_temp[i].type == HR_CONST) { |
| 306 | tr = ®_temp[i]; |
| 307 | goto do_alloc; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | tr = rcache_evict(); |
| 312 | |
| 313 | do_alloc: |
| 314 | if (mode != RC_GR_WRITE) |
| 315 | emith_ctx_read(tr->reg, r * 4); |
| 316 | |
| 317 | tr->type = mode != RC_GR_READ ? HR_CACHED_DIRTY : HR_CACHED; |
| 318 | tr->val = r; |
| 319 | tr->stamp = rcache_counter; |
| 320 | return tr->reg; |
| 321 | } |
| 322 | |
| 323 | static int rcache_get_tmp(void) |
| 324 | { |
| 325 | temp_reg_t *tr; |
| 326 | int i; |
| 327 | |
| 328 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 329 | if (reg_temp[i].type == HR_FREE || reg_temp[i].type == HR_CONST) { |
| 330 | tr = ®_temp[i]; |
| 331 | goto do_alloc; |
| 332 | } |
| 333 | |
| 334 | tr = rcache_evict(); |
| 335 | |
| 336 | do_alloc: |
| 337 | tr->type = HR_TEMP; |
| 338 | return tr->reg; |
| 339 | } |
| 340 | |
| 341 | static int rcache_get_arg_id(int arg) |
| 342 | { |
| 343 | int i, r = 0; |
| 344 | host_arg2reg(r, arg); |
| 345 | |
| 346 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 347 | if (reg_temp[i].reg == r) |
| 348 | break; |
| 349 | |
| 350 | if (i == ARRAY_SIZE(reg_temp)) |
| 351 | // let's just say it's untracked arg reg |
| 352 | return r; |
| 353 | |
| 354 | if (reg_temp[i].type == HR_CACHED_DIRTY) { |
| 355 | // writeback |
| 356 | emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4); |
| 357 | } |
| 358 | else if (reg_temp[i].type == HR_TEMP) { |
| 359 | printf("arg %d reg %d already used, aborting\n", arg, r); |
| 360 | exit(1); |
| 361 | } |
| 362 | |
| 363 | return i; |
| 364 | } |
| 365 | |
| 366 | // get a reg to be used as function arg |
| 367 | // it's assumed that regs are cleaned before call |
| 368 | static int rcache_get_tmp_arg(int arg) |
| 369 | { |
| 370 | int id = rcache_get_arg_id(arg); |
| 371 | reg_temp[id].type = HR_TEMP; |
| 372 | |
| 373 | return reg_temp[id].reg; |
| 374 | } |
| 375 | |
| 376 | // same but caches reg. RC_GR_READ only. |
| 377 | static int rcache_get_reg_arg(int arg, sh2_reg_e r) |
| 378 | { |
| 379 | int i, srcr, dstr, dstid; |
| 380 | |
| 381 | dstid = rcache_get_arg_id(arg); |
| 382 | dstr = reg_temp[dstid].reg; |
| 383 | |
| 384 | // maybe already statically mapped? |
| 385 | srcr = reg_map_g2h[r]; |
| 386 | if (srcr != -1) |
| 387 | goto do_cache; |
| 388 | |
| 389 | // maybe already cached? |
| 390 | for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) { |
| 391 | if ((reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) && |
| 392 | reg_temp[i].val == r) |
| 393 | { |
| 394 | srcr = reg_temp[i].reg; |
| 395 | goto do_cache; |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | // must read |
| 400 | srcr = dstr; |
| 401 | emith_ctx_read(srcr, r * 4); |
| 402 | |
| 403 | do_cache: |
| 404 | if (srcr != dstr) |
| 405 | emith_move_r_r(dstr, srcr); |
| 406 | |
| 407 | reg_temp[dstid].stamp = ++rcache_counter; |
| 408 | reg_temp[dstid].type = HR_CACHED; |
| 409 | reg_temp[dstid].val = r; |
| 410 | return dstr; |
| 411 | } |
| 412 | |
| 413 | static void rcache_free_tmp(int hr) |
| 414 | { |
| 415 | int i; |
| 416 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 417 | if (reg_temp[i].reg == hr) |
| 418 | break; |
| 419 | |
| 420 | if (i == ARRAY_SIZE(reg_temp) || reg_temp[i].type != HR_TEMP) { |
| 421 | printf("rcache_free_tmp fail: #%i hr %d, type %d\n", i, hr, reg_temp[i].type); |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | reg_temp[i].type = HR_FREE; |
| 426 | } |
| 427 | |
| 428 | static void rcache_clean(void) |
| 429 | { |
| 430 | int i; |
| 431 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 432 | if (reg_temp[i].type == HR_CACHED_DIRTY) { |
| 433 | // writeback |
| 434 | emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4); |
| 435 | reg_temp[i].type = HR_CACHED; |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | static void rcache_invalidate(void) |
| 440 | { |
| 441 | int i; |
| 442 | for (i = 0; i < ARRAY_SIZE(reg_temp); i++) |
| 443 | reg_temp[i].type = HR_FREE; |
| 444 | rcache_counter = 0; |
| 445 | } |
| 446 | |
| 447 | static void rcache_flush(void) |
| 448 | { |
| 449 | rcache_clean(); |
| 450 | rcache_invalidate(); |
| 451 | } |
| 452 | |
| 453 | // --------------------------------------------------------------- |
| 454 | |
| 455 | static void emit_move_r_imm32(sh2_reg_e dst, u32 imm) |
| 456 | { |
| 457 | // TODO: propagate this constant |
| 458 | int hr = rcache_get_reg(dst, RC_GR_WRITE); |
| 459 | emith_move_r_imm(hr, imm); |
| 460 | } |
| 461 | |
| 462 | static void emit_move_r_r(sh2_reg_e dst, sh2_reg_e src) |
| 463 | { |
| 464 | int hr_d = rcache_get_reg(dst, RC_GR_WRITE); |
| 465 | int hr_s = rcache_get_reg(src, RC_GR_READ); |
| 466 | |
| 467 | emith_move_r_r(hr_d, hr_s); |
| 468 | } |
| 469 | |
| 470 | // T must be clear, and comparison done just before this |
| 471 | static void emit_or_t_if_eq(int srr) |
| 472 | { |
| 473 | EMITH_SJMP_START(DCOND_NE); |
| 474 | emith_or_r_imm_c(DCOND_EQ, srr, T); |
| 475 | EMITH_SJMP_END(DCOND_NE); |
| 476 | } |
| 477 | |
| 478 | // arguments must be ready |
| 479 | // reg cache must be clean before call |
| 480 | static int emit_memhandler_read(int size) |
| 481 | { |
| 482 | int ctxr; |
| 483 | host_arg2reg(ctxr, 1); |
| 484 | emith_move_r_r(ctxr, CONTEXT_REG); |
| 485 | switch (size) { |
| 486 | case 0: // 8 |
| 487 | emith_call(p32x_sh2_read8); |
| 488 | break; |
| 489 | case 1: // 16 |
| 490 | emith_call(p32x_sh2_read16); |
| 491 | break; |
| 492 | case 2: // 32 |
| 493 | emith_call(p32x_sh2_read32); |
| 494 | break; |
| 495 | } |
| 496 | rcache_invalidate(); |
| 497 | // assuming arg0 and retval reg matches |
| 498 | return rcache_get_tmp_arg(0); |
| 499 | } |
| 500 | |
| 501 | static void emit_memhandler_write(int size) |
| 502 | { |
| 503 | int ctxr; |
| 504 | host_arg2reg(ctxr, 2); |
| 505 | emith_move_r_r(ctxr, CONTEXT_REG); |
| 506 | switch (size) { |
| 507 | case 0: // 8 |
| 508 | emith_call(p32x_sh2_write8); |
| 509 | break; |
| 510 | case 1: // 16 |
| 511 | emith_call(p32x_sh2_write16); |
| 512 | break; |
| 513 | case 2: // 32 |
| 514 | emith_call(p32x_sh2_write32); |
| 515 | break; |
| 516 | } |
| 517 | rcache_invalidate(); |
| 518 | } |
| 519 | |
| 520 | // @(Rx,Ry) |
| 521 | static int emit_indirect_indexed_read(int rx, int ry, int size) |
| 522 | { |
| 523 | int a0, t; |
| 524 | rcache_clean(); |
| 525 | a0 = rcache_get_reg_arg(0, rx); |
| 526 | t = rcache_get_reg(ry, RC_GR_READ); |
| 527 | emith_add_r_r(a0, t); |
| 528 | return emit_memhandler_read(size); |
| 529 | } |
| 530 | |
| 531 | // tmp_wr -> @(Rx,Ry) |
| 532 | static void emit_indirect_indexed_write(int tmp_wr, int rx, int ry, int size) |
| 533 | { |
| 534 | int a0, t; |
| 535 | rcache_clean(); |
| 536 | t = rcache_get_tmp_arg(1); |
| 537 | emith_move_r_r(t, tmp_wr); |
| 538 | a0 = rcache_get_reg_arg(0, rx); |
| 539 | t = rcache_get_reg(ry, RC_GR_READ); |
| 540 | emith_add_r_r(a0, t); |
| 541 | emit_memhandler_write(size); |
| 542 | } |
| 543 | |
| 544 | // read @Rn, @rm |
| 545 | static void emit_indirect_read_double(u32 *rnr, u32 *rmr, int rn, int rm, int size) |
| 546 | { |
| 547 | int tmp; |
| 548 | |
| 549 | rcache_clean(); |
| 550 | rcache_get_reg_arg(0, rn); |
| 551 | tmp = emit_memhandler_read(size); |
| 552 | emith_ctx_write(tmp, offsetof(SH2, drc_tmp)); |
| 553 | rcache_free_tmp(tmp); |
| 554 | tmp = rcache_get_reg(rn, RC_GR_RMW); |
| 555 | emith_add_r_imm(tmp, 1 << size); |
| 556 | |
| 557 | rcache_clean(); |
| 558 | rcache_get_reg_arg(0, rm); |
| 559 | *rmr = emit_memhandler_read(size); |
| 560 | *rnr = rcache_get_tmp(); |
| 561 | emith_ctx_read(*rnr, offsetof(SH2, drc_tmp)); |
| 562 | tmp = rcache_get_reg(rm, RC_GR_RMW); |
| 563 | emith_add_r_imm(tmp, 1 << size); |
| 564 | } |
| 565 | |
| 566 | static void emit_do_static_regs(int is_write, int tmpr) |
| 567 | { |
| 568 | int i, r, count; |
| 569 | |
| 570 | for (i = 0; i < ARRAY_SIZE(reg_map_g2h); i++) { |
| 571 | r = reg_map_g2h[i]; |
| 572 | if (r == -1) |
| 573 | continue; |
| 574 | |
| 575 | for (count = 1; i < ARRAY_SIZE(reg_map_g2h) - 1; i++, r++) { |
| 576 | if (reg_map_g2h[i + 1] != r + 1) |
| 577 | break; |
| 578 | count++; |
| 579 | } |
| 580 | |
| 581 | if (count > 1) { |
| 582 | // i, r point to last item |
| 583 | if (is_write) |
| 584 | emith_ctx_write_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr); |
| 585 | else |
| 586 | emith_ctx_read_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr); |
| 587 | } else { |
| 588 | if (is_write) |
| 589 | emith_ctx_write(r, i * 4); |
| 590 | else |
| 591 | emith_ctx_read(r, i * 4); |
| 592 | } |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | static void sh2_generate_utils(void) |
| 597 | { |
| 598 | int ctx, blk, tmp; |
| 599 | |
| 600 | host_arg2reg(blk, 0); |
| 601 | host_arg2reg(ctx, 1); |
| 602 | host_arg2reg(tmp, 2); |
| 603 | |
| 604 | // sh2_drc_entry(void *block, SH2 *sh2) |
| 605 | sh2_drc_entry = (void *)tcache_ptr; |
| 606 | emith_sh2_drc_entry(); |
| 607 | emith_move_r_r(CONTEXT_REG, ctx); // move ctx, arg1 |
| 608 | emit_do_static_regs(0, tmp); |
| 609 | emith_jump_reg(blk); // jump arg0 |
| 610 | |
| 611 | // sh2_drc_exit(void) |
| 612 | sh2_drc_exit = (void *)tcache_ptr; |
| 613 | emit_do_static_regs(1, tmp); |
| 614 | emith_sh2_drc_exit(); |
| 615 | |
| 616 | rcache_invalidate(); |
| 617 | } |
| 618 | |
| 619 | #define DELAYED_OP \ |
| 620 | drcf.delayed_op = 2 |
| 621 | |
| 622 | #define DELAY_SAVE_T(sr) { \ |
| 623 | emith_bic_r_imm(sr, T_save); \ |
| 624 | emith_tst_r_imm(sr, T); \ |
| 625 | EMITH_SJMP_START(DCOND_EQ); \ |
| 626 | emith_or_r_imm_c(DCOND_NE, sr, T_save); \ |
| 627 | EMITH_SJMP_END(DCOND_EQ); \ |
| 628 | drcf.use_saved_t = 1; \ |
| 629 | } |
| 630 | |
| 631 | #define CHECK_UNHANDLED_BITS(mask) { \ |
| 632 | if ((op & (mask)) != 0) \ |
| 633 | goto default_; \ |
| 634 | } |
| 635 | |
| 636 | #define GET_Fx() \ |
| 637 | ((op >> 4) & 0x0f) |
| 638 | |
| 639 | #define GET_Rm GET_Fx |
| 640 | |
| 641 | #define GET_Rn() \ |
| 642 | ((op >> 8) & 0x0f) |
| 643 | |
| 644 | #define CHECK_FX_LT(n) \ |
| 645 | if (GET_Fx() >= n) \ |
| 646 | goto default_ |
| 647 | |
| 648 | #define MAX_LOCAL_BRANCHES 16 |
| 649 | |
| 650 | // op_flags: data from 1st pass |
| 651 | #define OP_FLAGS(pc) op_flags[((pc) - base_pc) / 2] |
| 652 | #define OF_DELAY_OP (1 << 0) |
| 653 | |
| 654 | static void *sh2_translate(SH2 *sh2, int tcache_id) |
| 655 | { |
| 656 | // XXX: maybe use structs instead? |
| 657 | void *branch_target_ptr[MAX_LOCAL_BRANCHES]; |
| 658 | u32 branch_target_pc[MAX_LOCAL_BRANCHES]; |
| 659 | int branch_target_count = 0; |
| 660 | void *branch_patch_ptr[MAX_LOCAL_BRANCHES]; |
| 661 | u32 branch_patch_pc[MAX_LOCAL_BRANCHES]; |
| 662 | int branch_patch_count = 0; |
| 663 | int branch_patch_cond = -1; |
| 664 | u8 op_flags[BLOCK_CYCLE_LIMIT + 1]; |
| 665 | struct { |
| 666 | u32 delayed_op:2; |
| 667 | u32 test_irq:1; |
| 668 | u32 use_saved_t:1; // delayed op modifies T |
| 669 | } drcf = { 0, }; |
| 670 | |
| 671 | void *block_entry; |
| 672 | block_desc *this_block; |
| 673 | u32 pc, base_pc, end_pc; // PC of current, first, last insn |
| 674 | int blkid_main = 0; |
| 675 | u32 tmp, tmp2; |
| 676 | int cycles; |
| 677 | int op; |
| 678 | int i; |
| 679 | |
| 680 | base_pc = sh2->pc; |
| 681 | |
| 682 | // validate PC |
| 683 | tmp = base_pc >> 29; |
| 684 | if ((tmp != 0 && tmp != 1 && tmp != 6) || base_pc == 0) { |
| 685 | printf("invalid PC, aborting: %08x\n", base_pc); |
| 686 | // FIXME: be less destructive |
| 687 | exit(1); |
| 688 | } |
| 689 | |
| 690 | tcache_ptr = tcache_ptrs[tcache_id]; |
| 691 | this_block = dr_add_block(base_pc, tcache_id, &blkid_main); |
| 692 | |
| 693 | // predict tcache overflow |
| 694 | tmp = tcache_ptr - tcache_bases[tcache_id]; |
| 695 | if (tmp > tcache_sizes[tcache_id] - MAX_BLOCK_SIZE || this_block == NULL) |
| 696 | return NULL; |
| 697 | |
| 698 | block_entry = tcache_ptr; |
| 699 | dbg(1, "== %csh2 block #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm', |
| 700 | tcache_id, blkid_main, base_pc, block_entry); |
| 701 | |
| 702 | // 1st pass: scan forward for local branches |
| 703 | memset(op_flags, 0, sizeof(op_flags)); |
| 704 | for (cycles = 0, pc = base_pc; cycles < BLOCK_CYCLE_LIMIT; cycles++, pc += 2) { |
| 705 | op = p32x_sh2_read16(pc, sh2); |
| 706 | if ((op & 0xf000) == 0xa000 || (op & 0xf000) == 0xb000) { // BRA, BSR |
| 707 | pc += 2; |
| 708 | OP_FLAGS(pc) |= OF_DELAY_OP; |
| 709 | break; |
| 710 | } |
| 711 | if ((op & 0xf000) == 0) { |
| 712 | op &= 0xff; |
| 713 | if (op == 0x23 || op == 0x03 || op == 0x0b) { // BRAF, BSRF, RTS |
| 714 | pc += 2; |
| 715 | OP_FLAGS(pc) |= OF_DELAY_OP; |
| 716 | break; |
| 717 | } |
| 718 | continue; |
| 719 | } |
| 720 | if ((op & 0xf0df) == 0x400b) { // JMP, JSR |
| 721 | pc += 2; |
| 722 | OP_FLAGS(pc) |= OF_DELAY_OP; |
| 723 | break; |
| 724 | } |
| 725 | if ((op & 0xf900) == 0x8900) { // BT(S), BF(S) |
| 726 | signed int offs = ((signed int)(op << 24) >> 23); |
| 727 | if (op & 0x0400) |
| 728 | OP_FLAGS(pc + 2) |= OF_DELAY_OP; |
| 729 | branch_target_pc[branch_target_count++] = pc + offs + 4; |
| 730 | if (branch_target_count == MAX_LOCAL_BRANCHES) { |
| 731 | printf("warning: branch target overflow\n"); |
| 732 | // will only spawn additional blocks |
| 733 | break; |
| 734 | } |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | end_pc = pc; |
| 739 | |
| 740 | // clean branch_targets that are not really local, |
| 741 | // and that land on delay slots |
| 742 | for (i = 0, tmp = 0; i < branch_target_count; i++) { |
| 743 | pc = branch_target_pc[i]; |
| 744 | if (base_pc <= pc && pc <= end_pc && !(OP_FLAGS(pc) & OF_DELAY_OP)) |
| 745 | branch_target_pc[tmp++] = branch_target_pc[i]; |
| 746 | } |
| 747 | branch_target_count = tmp; |
| 748 | memset(branch_target_ptr, 0, sizeof(branch_target_ptr[0]) * branch_target_count); |
| 749 | |
| 750 | // ------------------------------------------------- |
| 751 | // 2nd pass: actual compilation |
| 752 | pc = base_pc; |
| 753 | for (cycles = 0; pc <= end_pc || drcf.delayed_op; ) |
| 754 | { |
| 755 | u32 tmp3, tmp4, sr; |
| 756 | |
| 757 | if (drcf.delayed_op > 0) |
| 758 | drcf.delayed_op--; |
| 759 | |
| 760 | i = find_in_array(branch_target_pc, branch_target_count, pc); |
| 761 | if (i >= 0) |
| 762 | { |
| 763 | if (pc != sh2->pc) |
| 764 | { |
| 765 | /* make "subblock" - just a mid-block entry */ |
| 766 | block_desc *subblock; |
| 767 | u16 *drcblk; |
| 768 | int blkid; |
| 769 | |
| 770 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 771 | emith_sub_r_imm(sr, cycles << 12); |
| 772 | cycles = 0; |
| 773 | rcache_flush(); |
| 774 | do_host_disasm(tcache_id); |
| 775 | |
| 776 | subblock = dr_add_block(pc, tcache_id, &blkid); |
| 777 | if (subblock == NULL) |
| 778 | return NULL; |
| 779 | subblock->end_addr = pc; |
| 780 | |
| 781 | if (tcache_id != 0) { // data array, BIOS |
| 782 | drcblk = Pico32xMem->drcblk_da[sh2->is_slave]; |
| 783 | drcblk += (pc & 0x00fff) >> SH2_DRCBLK_DA_SHIFT; |
| 784 | *drcblk = (blkid << 1) | 1; |
| 785 | } else if ((this_block->addr & 0xc7fc0000) == 0x06000000) { // DRAM |
| 786 | drcblk = Pico32xMem->drcblk_ram; |
| 787 | drcblk += (pc & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT; |
| 788 | *drcblk = (blkid << 1) | 1; |
| 789 | } |
| 790 | |
| 791 | dbg(1, "=== %csh2 subblock #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm', |
| 792 | tcache_id, blkid, pc, tcache_ptr); |
| 793 | } |
| 794 | branch_target_ptr[i] = tcache_ptr; |
| 795 | |
| 796 | // must update PC |
| 797 | emit_move_r_imm32(SHR_PC, pc); |
| 798 | rcache_clean(); |
| 799 | |
| 800 | // check cycles |
| 801 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 802 | emith_cmp_r_imm(sr, 0); |
| 803 | emith_jump_cond(DCOND_LE, sh2_drc_exit); |
| 804 | } |
| 805 | |
| 806 | op = p32x_sh2_read16(pc, sh2); |
| 807 | |
| 808 | #if (DRC_DEBUG & 3) |
| 809 | insns_compiled++; |
| 810 | #if (DRC_DEBUG & 2) |
| 811 | DasmSH2(sh2dasm_buff, pc, op); |
| 812 | printf("%08x %04x %s\n", pc, op, sh2dasm_buff); |
| 813 | #endif |
| 814 | #endif |
| 815 | |
| 816 | pc += 2; |
| 817 | cycles++; |
| 818 | |
| 819 | switch ((op >> 12) & 0x0f) |
| 820 | { |
| 821 | ///////////////////////////////////////////// |
| 822 | case 0x00: |
| 823 | switch (op & 0x0f) |
| 824 | { |
| 825 | case 0x02: |
| 826 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 827 | switch (GET_Fx()) |
| 828 | { |
| 829 | case 0: // STC SR,Rn 0000nnnn00000010 |
| 830 | tmp2 = SHR_SR; |
| 831 | break; |
| 832 | case 1: // STC GBR,Rn 0000nnnn00010010 |
| 833 | tmp2 = SHR_GBR; |
| 834 | break; |
| 835 | case 2: // STC VBR,Rn 0000nnnn00100010 |
| 836 | tmp2 = SHR_VBR; |
| 837 | break; |
| 838 | default: |
| 839 | goto default_; |
| 840 | } |
| 841 | tmp3 = rcache_get_reg(tmp2, RC_GR_READ); |
| 842 | emith_move_r_r(tmp, tmp3); |
| 843 | if (tmp2 == SHR_SR) |
| 844 | emith_clear_msb(tmp, tmp, 22); // reserved bits defined by ISA as 0 |
| 845 | goto end_op; |
| 846 | case 0x03: |
| 847 | CHECK_UNHANDLED_BITS(0xd0); |
| 848 | // BRAF Rm 0000mmmm00100011 |
| 849 | // BSRF Rm 0000mmmm00000011 |
| 850 | DELAYED_OP; |
| 851 | tmp = rcache_get_reg(SHR_PC, RC_GR_WRITE); |
| 852 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 853 | emith_move_r_r(tmp, tmp2); |
| 854 | if (op & 0x20) |
| 855 | emith_add_r_imm(tmp, pc + 2); |
| 856 | else { // BSRF |
| 857 | tmp3 = rcache_get_reg(SHR_PR, RC_GR_WRITE); |
| 858 | emith_move_r_imm(tmp3, pc + 2); |
| 859 | emith_add_r_r(tmp, tmp3); |
| 860 | } |
| 861 | cycles++; |
| 862 | goto end_op; |
| 863 | case 0x04: // MOV.B Rm,@(R0,Rn) 0000nnnnmmmm0100 |
| 864 | case 0x05: // MOV.W Rm,@(R0,Rn) 0000nnnnmmmm0101 |
| 865 | case 0x06: // MOV.L Rm,@(R0,Rn) 0000nnnnmmmm0110 |
| 866 | tmp = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 867 | emit_indirect_indexed_write(tmp, SHR_R0, GET_Rn(), op & 3); |
| 868 | goto end_op; |
| 869 | case 0x07: |
| 870 | // MUL.L Rm,Rn 0000nnnnmmmm0111 |
| 871 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 872 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 873 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 874 | emith_mul(tmp3, tmp2, tmp); |
| 875 | cycles++; |
| 876 | goto end_op; |
| 877 | case 0x08: |
| 878 | CHECK_UNHANDLED_BITS(0xf00); |
| 879 | switch (GET_Fx()) |
| 880 | { |
| 881 | case 0: // CLRT 0000000000001000 |
| 882 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 883 | if (drcf.delayed_op) |
| 884 | DELAY_SAVE_T(sr); |
| 885 | emith_bic_r_imm(sr, T); |
| 886 | break; |
| 887 | case 1: // SETT 0000000000011000 |
| 888 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 889 | if (drcf.delayed_op) |
| 890 | DELAY_SAVE_T(sr); |
| 891 | emith_or_r_imm(sr, T); |
| 892 | break; |
| 893 | case 2: // CLRMAC 0000000000101000 |
| 894 | tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 895 | emith_move_r_imm(tmp, 0); |
| 896 | tmp = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
| 897 | emith_move_r_imm(tmp, 0); |
| 898 | break; |
| 899 | default: |
| 900 | goto default_; |
| 901 | } |
| 902 | goto end_op; |
| 903 | case 0x09: |
| 904 | switch (GET_Fx()) |
| 905 | { |
| 906 | case 0: // NOP 0000000000001001 |
| 907 | CHECK_UNHANDLED_BITS(0xf00); |
| 908 | break; |
| 909 | case 1: // DIV0U 0000000000011001 |
| 910 | CHECK_UNHANDLED_BITS(0xf00); |
| 911 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 912 | if (drcf.delayed_op) |
| 913 | DELAY_SAVE_T(sr); |
| 914 | emith_bic_r_imm(sr, M|Q|T); |
| 915 | break; |
| 916 | case 2: // MOVT Rn 0000nnnn00101001 |
| 917 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 918 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 919 | emith_clear_msb(tmp2, sr, 31); |
| 920 | break; |
| 921 | default: |
| 922 | goto default_; |
| 923 | } |
| 924 | goto end_op; |
| 925 | case 0x0a: |
| 926 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 927 | switch (GET_Fx()) |
| 928 | { |
| 929 | case 0: // STS MACH,Rn 0000nnnn00001010 |
| 930 | tmp2 = SHR_MACH; |
| 931 | break; |
| 932 | case 1: // STS MACL,Rn 0000nnnn00011010 |
| 933 | tmp2 = SHR_MACL; |
| 934 | break; |
| 935 | case 2: // STS PR,Rn 0000nnnn00101010 |
| 936 | tmp2 = SHR_PR; |
| 937 | break; |
| 938 | default: |
| 939 | goto default_; |
| 940 | } |
| 941 | tmp2 = rcache_get_reg(tmp2, RC_GR_READ); |
| 942 | emith_move_r_r(tmp, tmp2); |
| 943 | goto end_op; |
| 944 | case 0x0b: |
| 945 | CHECK_UNHANDLED_BITS(0xf00); |
| 946 | switch (GET_Fx()) |
| 947 | { |
| 948 | case 0: // RTS 0000000000001011 |
| 949 | DELAYED_OP; |
| 950 | emit_move_r_r(SHR_PC, SHR_PR); |
| 951 | cycles++; |
| 952 | break; |
| 953 | case 1: // SLEEP 0000000000011011 |
| 954 | emit_move_r_imm32(SHR_PC, pc - 2); |
| 955 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 956 | emith_clear_msb(tmp, tmp, 20); // clear cycles |
| 957 | drcf.test_irq = 1; |
| 958 | cycles = 1; |
| 959 | break; |
| 960 | case 2: // RTE 0000000000101011 |
| 961 | DELAYED_OP; |
| 962 | rcache_clean(); |
| 963 | // pop PC |
| 964 | rcache_get_reg_arg(0, SHR_SP); |
| 965 | tmp = emit_memhandler_read(2); |
| 966 | tmp2 = rcache_get_reg(SHR_PC, RC_GR_WRITE); |
| 967 | emith_move_r_r(tmp2, tmp); |
| 968 | rcache_free_tmp(tmp); |
| 969 | rcache_clean(); |
| 970 | // pop SR |
| 971 | tmp = rcache_get_reg_arg(0, SHR_SP); |
| 972 | emith_add_r_imm(tmp, 4); |
| 973 | tmp = emit_memhandler_read(2); |
| 974 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 975 | emith_write_sr(sr, tmp); |
| 976 | rcache_free_tmp(tmp); |
| 977 | tmp = rcache_get_reg(SHR_SP, RC_GR_RMW); |
| 978 | emith_add_r_imm(tmp, 4*2); |
| 979 | drcf.test_irq = 1; |
| 980 | cycles += 3; |
| 981 | break; |
| 982 | default: |
| 983 | goto default_; |
| 984 | } |
| 985 | goto end_op; |
| 986 | case 0x0c: // MOV.B @(R0,Rm),Rn 0000nnnnmmmm1100 |
| 987 | case 0x0d: // MOV.W @(R0,Rm),Rn 0000nnnnmmmm1101 |
| 988 | case 0x0e: // MOV.L @(R0,Rm),Rn 0000nnnnmmmm1110 |
| 989 | tmp = emit_indirect_indexed_read(SHR_R0, GET_Rm(), op & 3); |
| 990 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 991 | if ((op & 3) != 2) { |
| 992 | emith_sext(tmp2, tmp, (op & 1) ? 16 : 8); |
| 993 | } else |
| 994 | emith_move_r_r(tmp2, tmp); |
| 995 | rcache_free_tmp(tmp); |
| 996 | goto end_op; |
| 997 | case 0x0f: // MAC.L @Rm+,@Rn+ 0000nnnnmmmm1111 |
| 998 | emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 2); |
| 999 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 1000 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW); |
| 1001 | /* MS 16 MAC bits unused if saturated */ |
| 1002 | emith_tst_r_imm(sr, S); |
| 1003 | EMITH_SJMP_START(DCOND_EQ); |
| 1004 | emith_clear_msb_c(DCOND_NE, tmp4, tmp4, 16); |
| 1005 | EMITH_SJMP_END(DCOND_EQ); |
| 1006 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); // might evict SR |
| 1007 | emith_mula_s64(tmp3, tmp4, tmp, tmp2); |
| 1008 | rcache_free_tmp(tmp2); |
| 1009 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); // reget just in case |
| 1010 | emith_tst_r_imm(sr, S); |
| 1011 | |
| 1012 | EMITH_JMP_START(DCOND_EQ); |
| 1013 | emith_asr(tmp, tmp4, 15); |
| 1014 | emith_cmp_r_imm(tmp, -1); // negative overflow (0x80000000..0xffff7fff) |
| 1015 | EMITH_SJMP_START(DCOND_GE); |
| 1016 | emith_move_r_imm_c(DCOND_LT, tmp4, 0x8000); |
| 1017 | emith_move_r_imm_c(DCOND_LT, tmp3, 0x0000); |
| 1018 | EMITH_SJMP_END(DCOND_GE); |
| 1019 | emith_cmp_r_imm(tmp, 0); // positive overflow (0x00008000..0x7fffffff) |
| 1020 | EMITH_SJMP_START(DCOND_LE); |
| 1021 | emith_move_r_imm_c(DCOND_GT, tmp4, 0x00007fff); |
| 1022 | emith_move_r_imm_c(DCOND_GT, tmp3, 0xffffffff); |
| 1023 | EMITH_SJMP_END(DCOND_LE); |
| 1024 | EMITH_JMP_END(DCOND_EQ); |
| 1025 | |
| 1026 | rcache_free_tmp(tmp); |
| 1027 | cycles += 3; |
| 1028 | goto end_op; |
| 1029 | } |
| 1030 | goto default_; |
| 1031 | |
| 1032 | ///////////////////////////////////////////// |
| 1033 | case 0x01: |
| 1034 | // MOV.L Rm,@(disp,Rn) 0001nnnnmmmmdddd |
| 1035 | rcache_clean(); |
| 1036 | tmp = rcache_get_reg_arg(0, GET_Rn()); |
| 1037 | tmp2 = rcache_get_reg_arg(1, GET_Rm()); |
| 1038 | emith_add_r_imm(tmp, (op & 0x0f) * 4); |
| 1039 | emit_memhandler_write(2); |
| 1040 | goto end_op; |
| 1041 | |
| 1042 | case 0x02: |
| 1043 | switch (op & 0x0f) |
| 1044 | { |
| 1045 | case 0x00: // MOV.B Rm,@Rn 0010nnnnmmmm0000 |
| 1046 | case 0x01: // MOV.W Rm,@Rn 0010nnnnmmmm0001 |
| 1047 | case 0x02: // MOV.L Rm,@Rn 0010nnnnmmmm0010 |
| 1048 | rcache_clean(); |
| 1049 | rcache_get_reg_arg(0, GET_Rn()); |
| 1050 | rcache_get_reg_arg(1, GET_Rm()); |
| 1051 | emit_memhandler_write(op & 3); |
| 1052 | goto end_op; |
| 1053 | case 0x04: // MOV.B Rm,@–Rn 0010nnnnmmmm0100 |
| 1054 | case 0x05: // MOV.W Rm,@–Rn 0010nnnnmmmm0101 |
| 1055 | case 0x06: // MOV.L Rm,@–Rn 0010nnnnmmmm0110 |
| 1056 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1057 | emith_sub_r_imm(tmp, (1 << (op & 3))); |
| 1058 | rcache_clean(); |
| 1059 | rcache_get_reg_arg(0, GET_Rn()); |
| 1060 | rcache_get_reg_arg(1, GET_Rm()); |
| 1061 | emit_memhandler_write(op & 3); |
| 1062 | goto end_op; |
| 1063 | case 0x07: // DIV0S Rm,Rn 0010nnnnmmmm0111 |
| 1064 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1065 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1066 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1067 | if (drcf.delayed_op) |
| 1068 | DELAY_SAVE_T(sr); |
| 1069 | emith_bic_r_imm(sr, M|Q|T); |
| 1070 | emith_tst_r_imm(tmp2, (1<<31)); |
| 1071 | EMITH_SJMP_START(DCOND_EQ); |
| 1072 | emith_or_r_imm_c(DCOND_NE, sr, Q); |
| 1073 | EMITH_SJMP_END(DCOND_EQ); |
| 1074 | emith_tst_r_imm(tmp3, (1<<31)); |
| 1075 | EMITH_SJMP_START(DCOND_EQ); |
| 1076 | emith_or_r_imm_c(DCOND_NE, sr, M); |
| 1077 | EMITH_SJMP_END(DCOND_EQ); |
| 1078 | emith_teq_r_r(tmp2, tmp3); |
| 1079 | EMITH_SJMP_START(DCOND_PL); |
| 1080 | emith_or_r_imm_c(DCOND_MI, sr, T); |
| 1081 | EMITH_SJMP_END(DCOND_PL); |
| 1082 | goto end_op; |
| 1083 | case 0x08: // TST Rm,Rn 0010nnnnmmmm1000 |
| 1084 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1085 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1086 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1087 | if (drcf.delayed_op) |
| 1088 | DELAY_SAVE_T(sr); |
| 1089 | emith_bic_r_imm(sr, T); |
| 1090 | emith_tst_r_r(tmp2, tmp3); |
| 1091 | emit_or_t_if_eq(sr); |
| 1092 | goto end_op; |
| 1093 | case 0x09: // AND Rm,Rn 0010nnnnmmmm1001 |
| 1094 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1095 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1096 | emith_and_r_r(tmp, tmp2); |
| 1097 | goto end_op; |
| 1098 | case 0x0a: // XOR Rm,Rn 0010nnnnmmmm1010 |
| 1099 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1100 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1101 | emith_eor_r_r(tmp, tmp2); |
| 1102 | goto end_op; |
| 1103 | case 0x0b: // OR Rm,Rn 0010nnnnmmmm1011 |
| 1104 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1105 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1106 | emith_or_r_r(tmp, tmp2); |
| 1107 | goto end_op; |
| 1108 | case 0x0c: // CMP/STR Rm,Rn 0010nnnnmmmm1100 |
| 1109 | tmp = rcache_get_tmp(); |
| 1110 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1111 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1112 | emith_eor_r_r_r(tmp, tmp2, tmp3); |
| 1113 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1114 | if (drcf.delayed_op) |
| 1115 | DELAY_SAVE_T(sr); |
| 1116 | emith_bic_r_imm(sr, T); |
| 1117 | emith_tst_r_imm(tmp, 0x000000ff); |
| 1118 | emit_or_t_if_eq(tmp); |
| 1119 | emith_tst_r_imm(tmp, 0x0000ff00); |
| 1120 | emit_or_t_if_eq(tmp); |
| 1121 | emith_tst_r_imm(tmp, 0x00ff0000); |
| 1122 | emit_or_t_if_eq(tmp); |
| 1123 | emith_tst_r_imm(tmp, 0xff000000); |
| 1124 | emit_or_t_if_eq(tmp); |
| 1125 | rcache_free_tmp(tmp); |
| 1126 | goto end_op; |
| 1127 | case 0x0d: // XTRCT Rm,Rn 0010nnnnmmmm1101 |
| 1128 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1129 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1130 | emith_lsr(tmp, tmp, 16); |
| 1131 | emith_or_r_r_lsl(tmp, tmp2, 16); |
| 1132 | goto end_op; |
| 1133 | case 0x0e: // MULU.W Rm,Rn 0010nnnnmmmm1110 |
| 1134 | case 0x0f: // MULS.W Rm,Rn 0010nnnnmmmm1111 |
| 1135 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1136 | tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 1137 | if (op & 1) { |
| 1138 | emith_sext(tmp, tmp2, 16); |
| 1139 | } else |
| 1140 | emith_clear_msb(tmp, tmp2, 16); |
| 1141 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1142 | tmp2 = rcache_get_tmp(); |
| 1143 | if (op & 1) { |
| 1144 | emith_sext(tmp2, tmp3, 16); |
| 1145 | } else |
| 1146 | emith_clear_msb(tmp2, tmp3, 16); |
| 1147 | emith_mul(tmp, tmp, tmp2); |
| 1148 | rcache_free_tmp(tmp2); |
| 1149 | // FIXME: causes timing issues in Doom? |
| 1150 | // cycles++; |
| 1151 | goto end_op; |
| 1152 | } |
| 1153 | goto default_; |
| 1154 | |
| 1155 | ///////////////////////////////////////////// |
| 1156 | case 0x03: |
| 1157 | switch (op & 0x0f) |
| 1158 | { |
| 1159 | case 0x00: // CMP/EQ Rm,Rn 0011nnnnmmmm0000 |
| 1160 | case 0x02: // CMP/HS Rm,Rn 0011nnnnmmmm0010 |
| 1161 | case 0x03: // CMP/GE Rm,Rn 0011nnnnmmmm0011 |
| 1162 | case 0x06: // CMP/HI Rm,Rn 0011nnnnmmmm0110 |
| 1163 | case 0x07: // CMP/GT Rm,Rn 0011nnnnmmmm0111 |
| 1164 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1165 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1166 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1167 | if (drcf.delayed_op) |
| 1168 | DELAY_SAVE_T(sr); |
| 1169 | emith_bic_r_imm(sr, T); |
| 1170 | emith_cmp_r_r(tmp2, tmp3); |
| 1171 | switch (op & 0x07) |
| 1172 | { |
| 1173 | case 0x00: // CMP/EQ |
| 1174 | emit_or_t_if_eq(sr); |
| 1175 | break; |
| 1176 | case 0x02: // CMP/HS |
| 1177 | EMITH_SJMP_START(DCOND_LO); |
| 1178 | emith_or_r_imm_c(DCOND_HS, sr, T); |
| 1179 | EMITH_SJMP_END(DCOND_LO); |
| 1180 | break; |
| 1181 | case 0x03: // CMP/GE |
| 1182 | EMITH_SJMP_START(DCOND_LT); |
| 1183 | emith_or_r_imm_c(DCOND_GE, sr, T); |
| 1184 | EMITH_SJMP_END(DCOND_LT); |
| 1185 | break; |
| 1186 | case 0x06: // CMP/HI |
| 1187 | EMITH_SJMP_START(DCOND_LS); |
| 1188 | emith_or_r_imm_c(DCOND_HI, sr, T); |
| 1189 | EMITH_SJMP_END(DCOND_LS); |
| 1190 | break; |
| 1191 | case 0x07: // CMP/GT |
| 1192 | EMITH_SJMP_START(DCOND_LE); |
| 1193 | emith_or_r_imm_c(DCOND_GT, sr, T); |
| 1194 | EMITH_SJMP_END(DCOND_LE); |
| 1195 | break; |
| 1196 | } |
| 1197 | goto end_op; |
| 1198 | case 0x04: // DIV1 Rm,Rn 0011nnnnmmmm0100 |
| 1199 | // Q1 = carry(Rn = (Rn << 1) | T) |
| 1200 | // if Q ^ M |
| 1201 | // Q2 = carry(Rn += Rm) |
| 1202 | // else |
| 1203 | // Q2 = carry(Rn -= Rm) |
| 1204 | // Q = M ^ Q1 ^ Q2 |
| 1205 | // T = (Q == M) = !(Q ^ M) = !(Q1 ^ Q2) |
| 1206 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1207 | tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1208 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1209 | if (drcf.delayed_op) |
| 1210 | DELAY_SAVE_T(sr); |
| 1211 | emith_tpop_carry(sr, 0); |
| 1212 | emith_adcf_r_r(tmp2, tmp2); |
| 1213 | emith_tpush_carry(sr, 0); // keep Q1 in T for now |
| 1214 | tmp4 = rcache_get_tmp(); |
| 1215 | emith_and_r_r_imm(tmp4, sr, M); |
| 1216 | emith_eor_r_r_lsr(sr, tmp4, M_SHIFT - Q_SHIFT); // Q ^= M |
| 1217 | rcache_free_tmp(tmp4); |
| 1218 | // add or sub, invert T if carry to get Q1 ^ Q2 |
| 1219 | // in: (Q ^ M) passed in Q, Q1 in T |
| 1220 | emith_sh2_div1_step(tmp2, tmp3, sr); |
| 1221 | emith_bic_r_imm(sr, Q); |
| 1222 | emith_tst_r_imm(sr, M); |
| 1223 | EMITH_SJMP_START(DCOND_EQ); |
| 1224 | emith_or_r_imm_c(DCOND_NE, sr, Q); // Q = M |
| 1225 | EMITH_SJMP_END(DCOND_EQ); |
| 1226 | emith_tst_r_imm(sr, T); |
| 1227 | EMITH_SJMP_START(DCOND_EQ); |
| 1228 | emith_eor_r_imm_c(DCOND_NE, sr, Q); // Q = M ^ Q1 ^ Q2 |
| 1229 | EMITH_SJMP_END(DCOND_EQ); |
| 1230 | emith_eor_r_imm(sr, T); // T = !(Q1 ^ Q2) |
| 1231 | goto end_op; |
| 1232 | case 0x05: // DMULU.L Rm,Rn 0011nnnnmmmm0101 |
| 1233 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1234 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1235 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 1236 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
| 1237 | emith_mul_u64(tmp3, tmp4, tmp, tmp2); |
| 1238 | goto end_op; |
| 1239 | case 0x08: // SUB Rm,Rn 0011nnnnmmmm1000 |
| 1240 | case 0x0c: // ADD Rm,Rn 0011nnnnmmmm1100 |
| 1241 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1242 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1243 | if (op & 4) { |
| 1244 | emith_add_r_r(tmp, tmp2); |
| 1245 | } else |
| 1246 | emith_sub_r_r(tmp, tmp2); |
| 1247 | goto end_op; |
| 1248 | case 0x0a: // SUBC Rm,Rn 0011nnnnmmmm1010 |
| 1249 | case 0x0e: // ADDC Rm,Rn 0011nnnnmmmm1110 |
| 1250 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1251 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1252 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1253 | if (drcf.delayed_op) |
| 1254 | DELAY_SAVE_T(sr); |
| 1255 | if (op & 4) { // adc |
| 1256 | emith_tpop_carry(sr, 0); |
| 1257 | emith_adcf_r_r(tmp, tmp2); |
| 1258 | emith_tpush_carry(sr, 0); |
| 1259 | } else { |
| 1260 | emith_tpop_carry(sr, 1); |
| 1261 | emith_sbcf_r_r(tmp, tmp2); |
| 1262 | emith_tpush_carry(sr, 1); |
| 1263 | } |
| 1264 | goto end_op; |
| 1265 | case 0x0b: // SUBV Rm,Rn 0011nnnnmmmm1011 |
| 1266 | case 0x0f: // ADDV Rm,Rn 0011nnnnmmmm1111 |
| 1267 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1268 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1269 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1270 | if (drcf.delayed_op) |
| 1271 | DELAY_SAVE_T(sr); |
| 1272 | emith_bic_r_imm(sr, T); |
| 1273 | if (op & 4) { |
| 1274 | emith_addf_r_r(tmp, tmp2); |
| 1275 | } else |
| 1276 | emith_subf_r_r(tmp, tmp2); |
| 1277 | EMITH_SJMP_START(DCOND_VC); |
| 1278 | emith_or_r_imm_c(DCOND_VS, sr, T); |
| 1279 | EMITH_SJMP_END(DCOND_VC); |
| 1280 | goto end_op; |
| 1281 | case 0x0d: // DMULS.L Rm,Rn 0011nnnnmmmm1101 |
| 1282 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1283 | tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1284 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE); |
| 1285 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE); |
| 1286 | emith_mul_s64(tmp3, tmp4, tmp, tmp2); |
| 1287 | goto end_op; |
| 1288 | } |
| 1289 | goto default_; |
| 1290 | |
| 1291 | ///////////////////////////////////////////// |
| 1292 | case 0x04: |
| 1293 | switch (op & 0x0f) |
| 1294 | { |
| 1295 | case 0x00: |
| 1296 | switch (GET_Fx()) |
| 1297 | { |
| 1298 | case 0: // SHLL Rn 0100nnnn00000000 |
| 1299 | case 2: // SHAL Rn 0100nnnn00100000 |
| 1300 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1301 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1302 | if (drcf.delayed_op) |
| 1303 | DELAY_SAVE_T(sr); |
| 1304 | emith_tpop_carry(sr, 0); // dummy |
| 1305 | emith_lslf(tmp, tmp, 1); |
| 1306 | emith_tpush_carry(sr, 0); |
| 1307 | goto end_op; |
| 1308 | case 1: // DT Rn 0100nnnn00010000 |
| 1309 | if (p32x_sh2_read16(pc, sh2) == 0x8bfd) { // BF #-2 |
| 1310 | emith_sh2_dtbf_loop(); |
| 1311 | goto end_op; |
| 1312 | } |
| 1313 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1314 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1315 | if (drcf.delayed_op) |
| 1316 | DELAY_SAVE_T(sr); |
| 1317 | emith_bic_r_imm(sr, T); |
| 1318 | emith_subf_r_imm(tmp, 1); |
| 1319 | emit_or_t_if_eq(sr); |
| 1320 | goto end_op; |
| 1321 | } |
| 1322 | goto default_; |
| 1323 | case 0x01: |
| 1324 | switch (GET_Fx()) |
| 1325 | { |
| 1326 | case 0: // SHLR Rn 0100nnnn00000001 |
| 1327 | case 2: // SHAR Rn 0100nnnn00100001 |
| 1328 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1329 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1330 | if (drcf.delayed_op) |
| 1331 | DELAY_SAVE_T(sr); |
| 1332 | emith_tpop_carry(sr, 0); // dummy |
| 1333 | if (op & 0x20) { |
| 1334 | emith_asrf(tmp, tmp, 1); |
| 1335 | } else |
| 1336 | emith_lsrf(tmp, tmp, 1); |
| 1337 | emith_tpush_carry(sr, 0); |
| 1338 | goto end_op; |
| 1339 | case 1: // CMP/PZ Rn 0100nnnn00010001 |
| 1340 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1341 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1342 | if (drcf.delayed_op) |
| 1343 | DELAY_SAVE_T(sr); |
| 1344 | emith_bic_r_imm(sr, T); |
| 1345 | emith_cmp_r_imm(tmp, 0); |
| 1346 | EMITH_SJMP_START(DCOND_LT); |
| 1347 | emith_or_r_imm_c(DCOND_GE, sr, T); |
| 1348 | EMITH_SJMP_END(DCOND_LT); |
| 1349 | goto end_op; |
| 1350 | } |
| 1351 | goto default_; |
| 1352 | case 0x02: |
| 1353 | case 0x03: |
| 1354 | switch (op & 0x3f) |
| 1355 | { |
| 1356 | case 0x02: // STS.L MACH,@–Rn 0100nnnn00000010 |
| 1357 | tmp = SHR_MACH; |
| 1358 | break; |
| 1359 | case 0x12: // STS.L MACL,@–Rn 0100nnnn00010010 |
| 1360 | tmp = SHR_MACL; |
| 1361 | break; |
| 1362 | case 0x22: // STS.L PR,@–Rn 0100nnnn00100010 |
| 1363 | tmp = SHR_PR; |
| 1364 | break; |
| 1365 | case 0x03: // STC.L SR,@–Rn 0100nnnn00000011 |
| 1366 | tmp = SHR_SR; |
| 1367 | break; |
| 1368 | case 0x13: // STC.L GBR,@–Rn 0100nnnn00010011 |
| 1369 | tmp = SHR_GBR; |
| 1370 | break; |
| 1371 | case 0x23: // STC.L VBR,@–Rn 0100nnnn00100011 |
| 1372 | tmp = SHR_VBR; |
| 1373 | break; |
| 1374 | default: |
| 1375 | goto default_; |
| 1376 | } |
| 1377 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1378 | emith_sub_r_imm(tmp2, 4); |
| 1379 | rcache_clean(); |
| 1380 | rcache_get_reg_arg(0, GET_Rn()); |
| 1381 | tmp3 = rcache_get_reg_arg(1, tmp); |
| 1382 | if (tmp == SHR_SR) |
| 1383 | emith_clear_msb(tmp3, tmp3, 20); // reserved bits defined by ISA as 0 |
| 1384 | emit_memhandler_write(2); |
| 1385 | goto end_op; |
| 1386 | case 0x04: |
| 1387 | case 0x05: |
| 1388 | switch (op & 0x3f) |
| 1389 | { |
| 1390 | case 0x04: // ROTL Rn 0100nnnn00000100 |
| 1391 | case 0x05: // ROTR Rn 0100nnnn00000101 |
| 1392 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1393 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1394 | if (drcf.delayed_op) |
| 1395 | DELAY_SAVE_T(sr); |
| 1396 | emith_tpop_carry(sr, 0); // dummy |
| 1397 | if (op & 1) { |
| 1398 | emith_rorf(tmp, tmp, 1); |
| 1399 | } else |
| 1400 | emith_rolf(tmp, tmp, 1); |
| 1401 | emith_tpush_carry(sr, 0); |
| 1402 | goto end_op; |
| 1403 | case 0x24: // ROTCL Rn 0100nnnn00100100 |
| 1404 | case 0x25: // ROTCR Rn 0100nnnn00100101 |
| 1405 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1406 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1407 | if (drcf.delayed_op) |
| 1408 | DELAY_SAVE_T(sr); |
| 1409 | emith_tpop_carry(sr, 0); |
| 1410 | if (op & 1) { |
| 1411 | emith_rorcf(tmp); |
| 1412 | } else |
| 1413 | emith_rolcf(tmp); |
| 1414 | emith_tpush_carry(sr, 0); |
| 1415 | goto end_op; |
| 1416 | case 0x15: // CMP/PL Rn 0100nnnn00010101 |
| 1417 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1418 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1419 | if (drcf.delayed_op) |
| 1420 | DELAY_SAVE_T(sr); |
| 1421 | emith_bic_r_imm(sr, T); |
| 1422 | emith_cmp_r_imm(tmp, 0); |
| 1423 | EMITH_SJMP_START(DCOND_LE); |
| 1424 | emith_or_r_imm_c(DCOND_GT, sr, T); |
| 1425 | EMITH_SJMP_END(DCOND_LE); |
| 1426 | goto end_op; |
| 1427 | } |
| 1428 | goto default_; |
| 1429 | case 0x06: |
| 1430 | case 0x07: |
| 1431 | switch (op & 0x3f) |
| 1432 | { |
| 1433 | case 0x06: // LDS.L @Rm+,MACH 0100mmmm00000110 |
| 1434 | tmp = SHR_MACH; |
| 1435 | break; |
| 1436 | case 0x16: // LDS.L @Rm+,MACL 0100mmmm00010110 |
| 1437 | tmp = SHR_MACL; |
| 1438 | break; |
| 1439 | case 0x26: // LDS.L @Rm+,PR 0100mmmm00100110 |
| 1440 | tmp = SHR_PR; |
| 1441 | break; |
| 1442 | case 0x07: // LDC.L @Rm+,SR 0100mmmm00000111 |
| 1443 | tmp = SHR_SR; |
| 1444 | break; |
| 1445 | case 0x17: // LDC.L @Rm+,GBR 0100mmmm00010111 |
| 1446 | tmp = SHR_GBR; |
| 1447 | break; |
| 1448 | case 0x27: // LDC.L @Rm+,VBR 0100mmmm00100111 |
| 1449 | tmp = SHR_VBR; |
| 1450 | break; |
| 1451 | default: |
| 1452 | goto default_; |
| 1453 | } |
| 1454 | rcache_clean(); |
| 1455 | rcache_get_reg_arg(0, GET_Rn()); |
| 1456 | tmp2 = emit_memhandler_read(2); |
| 1457 | if (tmp == SHR_SR) { |
| 1458 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1459 | if (drcf.delayed_op) |
| 1460 | DELAY_SAVE_T(sr); |
| 1461 | emith_write_sr(sr, tmp2); |
| 1462 | drcf.test_irq = 1; |
| 1463 | } else { |
| 1464 | tmp = rcache_get_reg(tmp, RC_GR_WRITE); |
| 1465 | emith_move_r_r(tmp, tmp2); |
| 1466 | } |
| 1467 | rcache_free_tmp(tmp2); |
| 1468 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1469 | emith_add_r_imm(tmp, 4); |
| 1470 | goto end_op; |
| 1471 | case 0x08: |
| 1472 | case 0x09: |
| 1473 | switch (GET_Fx()) |
| 1474 | { |
| 1475 | case 0: |
| 1476 | // SHLL2 Rn 0100nnnn00001000 |
| 1477 | // SHLR2 Rn 0100nnnn00001001 |
| 1478 | tmp = 2; |
| 1479 | break; |
| 1480 | case 1: |
| 1481 | // SHLL8 Rn 0100nnnn00011000 |
| 1482 | // SHLR8 Rn 0100nnnn00011001 |
| 1483 | tmp = 8; |
| 1484 | break; |
| 1485 | case 2: |
| 1486 | // SHLL16 Rn 0100nnnn00101000 |
| 1487 | // SHLR16 Rn 0100nnnn00101001 |
| 1488 | tmp = 16; |
| 1489 | break; |
| 1490 | default: |
| 1491 | goto default_; |
| 1492 | } |
| 1493 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1494 | if (op & 1) { |
| 1495 | emith_lsr(tmp2, tmp2, tmp); |
| 1496 | } else |
| 1497 | emith_lsl(tmp2, tmp2, tmp); |
| 1498 | goto end_op; |
| 1499 | case 0x0a: |
| 1500 | switch (GET_Fx()) |
| 1501 | { |
| 1502 | case 0: // LDS Rm,MACH 0100mmmm00001010 |
| 1503 | tmp2 = SHR_MACH; |
| 1504 | break; |
| 1505 | case 1: // LDS Rm,MACL 0100mmmm00011010 |
| 1506 | tmp2 = SHR_MACL; |
| 1507 | break; |
| 1508 | case 2: // LDS Rm,PR 0100mmmm00101010 |
| 1509 | tmp2 = SHR_PR; |
| 1510 | break; |
| 1511 | default: |
| 1512 | goto default_; |
| 1513 | } |
| 1514 | emit_move_r_r(tmp2, GET_Rn()); |
| 1515 | goto end_op; |
| 1516 | case 0x0b: |
| 1517 | switch (GET_Fx()) |
| 1518 | { |
| 1519 | case 0: // JSR @Rm 0100mmmm00001011 |
| 1520 | case 2: // JMP @Rm 0100mmmm00101011 |
| 1521 | DELAYED_OP; |
| 1522 | if (!(op & 0x20)) |
| 1523 | emit_move_r_imm32(SHR_PR, pc + 2); |
| 1524 | emit_move_r_r(SHR_PC, (op >> 8) & 0x0f); |
| 1525 | cycles++; |
| 1526 | break; |
| 1527 | case 1: // TAS.B @Rn 0100nnnn00011011 |
| 1528 | // XXX: is TAS working on 32X? |
| 1529 | rcache_clean(); |
| 1530 | rcache_get_reg_arg(0, GET_Rn()); |
| 1531 | tmp = emit_memhandler_read(0); |
| 1532 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1533 | if (drcf.delayed_op) |
| 1534 | DELAY_SAVE_T(sr); |
| 1535 | emith_bic_r_imm(sr, T); |
| 1536 | emith_cmp_r_imm(tmp, 0); |
| 1537 | emit_or_t_if_eq(sr); |
| 1538 | rcache_clean(); |
| 1539 | emith_or_r_imm(tmp, 0x80); |
| 1540 | tmp2 = rcache_get_tmp_arg(1); // assuming it differs to tmp |
| 1541 | emith_move_r_r(tmp2, tmp); |
| 1542 | rcache_free_tmp(tmp); |
| 1543 | rcache_get_reg_arg(0, GET_Rn()); |
| 1544 | emit_memhandler_write(0); |
| 1545 | cycles += 3; |
| 1546 | break; |
| 1547 | default: |
| 1548 | goto default_; |
| 1549 | } |
| 1550 | goto end_op; |
| 1551 | case 0x0e: |
| 1552 | tmp = rcache_get_reg(GET_Rn(), RC_GR_READ); |
| 1553 | switch (GET_Fx()) |
| 1554 | { |
| 1555 | case 0: // LDC Rm,SR 0100mmmm00001110 |
| 1556 | tmp2 = SHR_SR; |
| 1557 | break; |
| 1558 | case 1: // LDC Rm,GBR 0100mmmm00011110 |
| 1559 | tmp2 = SHR_GBR; |
| 1560 | break; |
| 1561 | case 2: // LDC Rm,VBR 0100mmmm00101110 |
| 1562 | tmp2 = SHR_VBR; |
| 1563 | break; |
| 1564 | default: |
| 1565 | goto default_; |
| 1566 | } |
| 1567 | if (tmp2 == SHR_SR) { |
| 1568 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1569 | if (drcf.delayed_op) |
| 1570 | DELAY_SAVE_T(sr); |
| 1571 | emith_write_sr(sr, tmp); |
| 1572 | drcf.test_irq = 1; |
| 1573 | } else { |
| 1574 | tmp2 = rcache_get_reg(tmp2, RC_GR_WRITE); |
| 1575 | emith_move_r_r(tmp2, tmp); |
| 1576 | } |
| 1577 | goto end_op; |
| 1578 | case 0x0f: |
| 1579 | // MAC @Rm+,@Rn+ 0100nnnnmmmm1111 |
| 1580 | emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 1); |
| 1581 | emith_sext(tmp, tmp, 16); |
| 1582 | emith_sext(tmp2, tmp2, 16); |
| 1583 | tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); |
| 1584 | tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW); |
| 1585 | emith_mula_s64(tmp3, tmp4, tmp, tmp2); |
| 1586 | rcache_free_tmp(tmp2); |
| 1587 | // XXX: MACH should be untouched when S is set? |
| 1588 | sr = rcache_get_reg(SHR_SR, RC_GR_READ); |
| 1589 | emith_tst_r_imm(sr, S); |
| 1590 | EMITH_JMP_START(DCOND_EQ); |
| 1591 | |
| 1592 | emith_asr(tmp, tmp3, 31); |
| 1593 | emith_eorf_r_r(tmp, tmp4); // tmp = ((signed)macl >> 31) ^ mach |
| 1594 | EMITH_JMP_START(DCOND_EQ); |
| 1595 | emith_move_r_imm(tmp3, 0x80000000); |
| 1596 | emith_tst_r_r(tmp4, tmp4); |
| 1597 | EMITH_SJMP_START(DCOND_MI); |
| 1598 | emith_sub_r_imm_c(DCOND_PL, tmp3, 1); // positive |
| 1599 | EMITH_SJMP_END(DCOND_MI); |
| 1600 | EMITH_JMP_END(DCOND_EQ); |
| 1601 | |
| 1602 | EMITH_JMP_END(DCOND_EQ); |
| 1603 | rcache_free_tmp(tmp); |
| 1604 | cycles += 2; |
| 1605 | goto end_op; |
| 1606 | } |
| 1607 | goto default_; |
| 1608 | |
| 1609 | ///////////////////////////////////////////// |
| 1610 | case 0x05: |
| 1611 | // MOV.L @(disp,Rm),Rn 0101nnnnmmmmdddd |
| 1612 | rcache_clean(); |
| 1613 | tmp = rcache_get_reg_arg(0, GET_Rm()); |
| 1614 | emith_add_r_imm(tmp, (op & 0x0f) * 4); |
| 1615 | tmp = emit_memhandler_read(2); |
| 1616 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1617 | emith_move_r_r(tmp2, tmp); |
| 1618 | rcache_free_tmp(tmp); |
| 1619 | goto end_op; |
| 1620 | |
| 1621 | ///////////////////////////////////////////// |
| 1622 | case 0x06: |
| 1623 | switch (op & 0x0f) |
| 1624 | { |
| 1625 | case 0x00: // MOV.B @Rm,Rn 0110nnnnmmmm0000 |
| 1626 | case 0x01: // MOV.W @Rm,Rn 0110nnnnmmmm0001 |
| 1627 | case 0x02: // MOV.L @Rm,Rn 0110nnnnmmmm0010 |
| 1628 | case 0x04: // MOV.B @Rm+,Rn 0110nnnnmmmm0100 |
| 1629 | case 0x05: // MOV.W @Rm+,Rn 0110nnnnmmmm0101 |
| 1630 | case 0x06: // MOV.L @Rm+,Rn 0110nnnnmmmm0110 |
| 1631 | rcache_clean(); |
| 1632 | rcache_get_reg_arg(0, GET_Rm()); |
| 1633 | tmp = emit_memhandler_read(op & 3); |
| 1634 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1635 | if ((op & 3) != 2) { |
| 1636 | emith_sext(tmp2, tmp, (op & 1) ? 16 : 8); |
| 1637 | } else |
| 1638 | emith_move_r_r(tmp2, tmp); |
| 1639 | rcache_free_tmp(tmp); |
| 1640 | if ((op & 7) >= 4 && GET_Rn() != GET_Rm()) { |
| 1641 | tmp = rcache_get_reg(GET_Rm(), RC_GR_RMW); |
| 1642 | emith_add_r_imm(tmp, (1 << (op & 3))); |
| 1643 | } |
| 1644 | goto end_op; |
| 1645 | case 0x03: |
| 1646 | case 0x07 ... 0x0f: |
| 1647 | tmp = rcache_get_reg(GET_Rm(), RC_GR_READ); |
| 1648 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1649 | switch (op & 0x0f) |
| 1650 | { |
| 1651 | case 0x03: // MOV Rm,Rn 0110nnnnmmmm0011 |
| 1652 | emith_move_r_r(tmp2, tmp); |
| 1653 | break; |
| 1654 | case 0x07: // NOT Rm,Rn 0110nnnnmmmm0111 |
| 1655 | emith_mvn_r_r(tmp2, tmp); |
| 1656 | break; |
| 1657 | case 0x08: // SWAP.B Rm,Rn 0110nnnnmmmm1000 |
| 1658 | tmp3 = tmp2; |
| 1659 | if (tmp == tmp2) |
| 1660 | tmp3 = rcache_get_tmp(); |
| 1661 | tmp4 = rcache_get_tmp(); |
| 1662 | emith_lsr(tmp3, tmp, 16); |
| 1663 | emith_or_r_r_lsl(tmp3, tmp, 24); |
| 1664 | emith_and_r_r_imm(tmp4, tmp, 0xff00); |
| 1665 | emith_or_r_r_lsl(tmp3, tmp4, 8); |
| 1666 | emith_rol(tmp2, tmp3, 16); |
| 1667 | rcache_free_tmp(tmp4); |
| 1668 | if (tmp == tmp2) |
| 1669 | rcache_free_tmp(tmp3); |
| 1670 | break; |
| 1671 | case 0x09: // SWAP.W Rm,Rn 0110nnnnmmmm1001 |
| 1672 | emith_rol(tmp2, tmp, 16); |
| 1673 | break; |
| 1674 | case 0x0a: // NEGC Rm,Rn 0110nnnnmmmm1010 |
| 1675 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1676 | if (drcf.delayed_op) |
| 1677 | DELAY_SAVE_T(sr); |
| 1678 | emith_tpop_carry(sr, 1); |
| 1679 | emith_negcf_r_r(tmp2, tmp); |
| 1680 | emith_tpush_carry(sr, 1); |
| 1681 | break; |
| 1682 | case 0x0b: // NEG Rm,Rn 0110nnnnmmmm1011 |
| 1683 | emith_neg_r_r(tmp2, tmp); |
| 1684 | break; |
| 1685 | case 0x0c: // EXTU.B Rm,Rn 0110nnnnmmmm1100 |
| 1686 | emith_clear_msb(tmp2, tmp, 24); |
| 1687 | break; |
| 1688 | case 0x0d: // EXTU.W Rm,Rn 0110nnnnmmmm1101 |
| 1689 | emith_clear_msb(tmp2, tmp, 16); |
| 1690 | break; |
| 1691 | case 0x0e: // EXTS.B Rm,Rn 0110nnnnmmmm1110 |
| 1692 | emith_sext(tmp2, tmp, 8); |
| 1693 | break; |
| 1694 | case 0x0f: // EXTS.W Rm,Rn 0110nnnnmmmm1111 |
| 1695 | emith_sext(tmp2, tmp, 16); |
| 1696 | break; |
| 1697 | } |
| 1698 | goto end_op; |
| 1699 | } |
| 1700 | goto default_; |
| 1701 | |
| 1702 | ///////////////////////////////////////////// |
| 1703 | case 0x07: |
| 1704 | // ADD #imm,Rn 0111nnnniiiiiiii |
| 1705 | tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW); |
| 1706 | if (op & 0x80) { // adding negative |
| 1707 | emith_sub_r_imm(tmp, -op & 0xff); |
| 1708 | } else |
| 1709 | emith_add_r_imm(tmp, op & 0xff); |
| 1710 | goto end_op; |
| 1711 | |
| 1712 | ///////////////////////////////////////////// |
| 1713 | case 0x08: |
| 1714 | switch (op & 0x0f00) |
| 1715 | { |
| 1716 | case 0x0000: // MOV.B R0,@(disp,Rn) 10000000nnnndddd |
| 1717 | case 0x0100: // MOV.W R0,@(disp,Rn) 10000001nnnndddd |
| 1718 | rcache_clean(); |
| 1719 | tmp = rcache_get_reg_arg(0, GET_Rm()); |
| 1720 | tmp2 = rcache_get_reg_arg(1, SHR_R0); |
| 1721 | tmp3 = (op & 0x100) >> 8; |
| 1722 | emith_add_r_imm(tmp, (op & 0x0f) << tmp3); |
| 1723 | emit_memhandler_write(tmp3); |
| 1724 | goto end_op; |
| 1725 | case 0x0400: // MOV.B @(disp,Rm),R0 10000100mmmmdddd |
| 1726 | case 0x0500: // MOV.W @(disp,Rm),R0 10000101mmmmdddd |
| 1727 | rcache_clean(); |
| 1728 | tmp = rcache_get_reg_arg(0, GET_Rm()); |
| 1729 | tmp3 = (op & 0x100) >> 8; |
| 1730 | emith_add_r_imm(tmp, (op & 0x0f) << tmp3); |
| 1731 | tmp = emit_memhandler_read(tmp3); |
| 1732 | tmp2 = rcache_get_reg(0, RC_GR_WRITE); |
| 1733 | emith_sext(tmp2, tmp, 8 << tmp3); |
| 1734 | rcache_free_tmp(tmp); |
| 1735 | goto end_op; |
| 1736 | case 0x0800: // CMP/EQ #imm,R0 10001000iiiiiiii |
| 1737 | // XXX: could use cmn |
| 1738 | tmp = rcache_get_tmp(); |
| 1739 | tmp2 = rcache_get_reg(0, RC_GR_READ); |
| 1740 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1741 | if (drcf.delayed_op) |
| 1742 | DELAY_SAVE_T(sr); |
| 1743 | emith_move_r_imm_s8(tmp, op & 0xff); |
| 1744 | emith_bic_r_imm(sr, T); |
| 1745 | emith_cmp_r_r(tmp2, tmp); |
| 1746 | emit_or_t_if_eq(sr); |
| 1747 | rcache_free_tmp(tmp); |
| 1748 | goto end_op; |
| 1749 | case 0x0d00: // BT/S label 10001101dddddddd |
| 1750 | case 0x0f00: // BF/S label 10001111dddddddd |
| 1751 | DELAYED_OP; |
| 1752 | cycles--; |
| 1753 | // fallthrough |
| 1754 | case 0x0900: // BT label 10001001dddddddd |
| 1755 | case 0x0b00: { // BF label 10001011dddddddd |
| 1756 | // jmp_cond ~ cond when guest doesn't jump |
| 1757 | int jmp_cond = (op & 0x0200) ? DCOND_NE : DCOND_EQ; |
| 1758 | int insn_cond = (op & 0x0200) ? DCOND_EQ : DCOND_NE; |
| 1759 | signed int offs = ((signed int)(op << 24) >> 23); |
| 1760 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1761 | if (find_in_array(branch_target_pc, branch_target_count, pc + offs + 2) >= 0) { |
| 1762 | branch_patch_pc[branch_patch_count] = pc + offs + 2; |
| 1763 | branch_patch_cond = insn_cond; |
| 1764 | goto end_op; |
| 1765 | } |
| 1766 | |
| 1767 | // can't resolve branch, cause end of block |
| 1768 | tmp = rcache_get_reg(SHR_PC, RC_GR_WRITE); |
| 1769 | emith_move_r_imm(tmp, pc + (drcf.delayed_op ? 2 : 0)); |
| 1770 | emith_tst_r_imm(sr, T); |
| 1771 | EMITH_SJMP_START(jmp_cond); |
| 1772 | if (!drcf.delayed_op) |
| 1773 | offs += 2; |
| 1774 | if (offs < 0) { |
| 1775 | emith_sub_r_imm_c(insn_cond, tmp, -offs); |
| 1776 | } else |
| 1777 | emith_add_r_imm_c(insn_cond, tmp, offs); |
| 1778 | EMITH_SJMP_END(jmp_cond); |
| 1779 | cycles += 2; |
| 1780 | if (!drcf.delayed_op) |
| 1781 | goto end_block_btf; |
| 1782 | goto end_op; |
| 1783 | }} |
| 1784 | goto default_; |
| 1785 | |
| 1786 | ///////////////////////////////////////////// |
| 1787 | case 0x09: |
| 1788 | // MOV.W @(disp,PC),Rn 1001nnnndddddddd |
| 1789 | rcache_clean(); |
| 1790 | tmp = rcache_get_tmp_arg(0); |
| 1791 | emith_move_r_imm(tmp, pc + (op & 0xff) * 2 + 2); |
| 1792 | tmp = emit_memhandler_read(1); |
| 1793 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1794 | emith_sext(tmp2, tmp, 16); |
| 1795 | rcache_free_tmp(tmp); |
| 1796 | goto end_op; |
| 1797 | |
| 1798 | ///////////////////////////////////////////// |
| 1799 | case 0x0a: |
| 1800 | // BRA label 1010dddddddddddd |
| 1801 | DELAYED_OP; |
| 1802 | do_bra: |
| 1803 | tmp = ((signed int)(op << 20) >> 19); |
| 1804 | emit_move_r_imm32(SHR_PC, pc + tmp + 2); |
| 1805 | cycles++; |
| 1806 | break; |
| 1807 | |
| 1808 | ///////////////////////////////////////////// |
| 1809 | case 0x0b: |
| 1810 | // BSR label 1011dddddddddddd |
| 1811 | DELAYED_OP; |
| 1812 | emit_move_r_imm32(SHR_PR, pc + 2); |
| 1813 | goto do_bra; |
| 1814 | |
| 1815 | ///////////////////////////////////////////// |
| 1816 | case 0x0c: |
| 1817 | switch (op & 0x0f00) |
| 1818 | { |
| 1819 | case 0x0000: // MOV.B R0,@(disp,GBR) 11000000dddddddd |
| 1820 | case 0x0100: // MOV.W R0,@(disp,GBR) 11000001dddddddd |
| 1821 | case 0x0200: // MOV.L R0,@(disp,GBR) 11000010dddddddd |
| 1822 | rcache_clean(); |
| 1823 | tmp = rcache_get_reg_arg(0, SHR_GBR); |
| 1824 | tmp2 = rcache_get_reg_arg(1, SHR_R0); |
| 1825 | tmp3 = (op & 0x300) >> 8; |
| 1826 | emith_add_r_imm(tmp, (op & 0xff) << tmp3); |
| 1827 | emit_memhandler_write(tmp3); |
| 1828 | goto end_op; |
| 1829 | case 0x0400: // MOV.B @(disp,GBR),R0 11000100dddddddd |
| 1830 | case 0x0500: // MOV.W @(disp,GBR),R0 11000101dddddddd |
| 1831 | case 0x0600: // MOV.L @(disp,GBR),R0 11000110dddddddd |
| 1832 | rcache_clean(); |
| 1833 | tmp = rcache_get_reg_arg(0, SHR_GBR); |
| 1834 | tmp3 = (op & 0x300) >> 8; |
| 1835 | emith_add_r_imm(tmp, (op & 0xff) << tmp3); |
| 1836 | tmp = emit_memhandler_read(tmp3); |
| 1837 | tmp2 = rcache_get_reg(0, RC_GR_WRITE); |
| 1838 | if (tmp3 != 2) { |
| 1839 | emith_sext(tmp2, tmp, 8 << tmp3); |
| 1840 | } else |
| 1841 | emith_move_r_r(tmp2, tmp); |
| 1842 | rcache_free_tmp(tmp); |
| 1843 | goto end_op; |
| 1844 | case 0x0300: // TRAPA #imm 11000011iiiiiiii |
| 1845 | tmp = rcache_get_reg(SHR_SP, RC_GR_RMW); |
| 1846 | emith_sub_r_imm(tmp, 4*2); |
| 1847 | rcache_clean(); |
| 1848 | // push SR |
| 1849 | tmp = rcache_get_reg_arg(0, SHR_SP); |
| 1850 | emith_add_r_imm(tmp, 4); |
| 1851 | tmp = rcache_get_reg_arg(1, SHR_SR); |
| 1852 | emith_clear_msb(tmp, tmp, 22); |
| 1853 | emit_memhandler_write(2); |
| 1854 | // push PC |
| 1855 | rcache_get_reg_arg(0, SHR_SP); |
| 1856 | tmp = rcache_get_tmp_arg(1); |
| 1857 | emith_move_r_imm(tmp, pc); |
| 1858 | emit_memhandler_write(2); |
| 1859 | // obtain new PC |
| 1860 | tmp = rcache_get_reg_arg(0, SHR_VBR); |
| 1861 | emith_add_r_imm(tmp, (op & 0xff) * 4); |
| 1862 | tmp = emit_memhandler_read(2); |
| 1863 | tmp2 = rcache_get_reg(SHR_PC, RC_GR_WRITE); |
| 1864 | emith_move_r_r(tmp2, tmp); |
| 1865 | rcache_free_tmp(tmp); |
| 1866 | cycles += 7; |
| 1867 | goto end_block_btf; |
| 1868 | case 0x0700: // MOVA @(disp,PC),R0 11000111dddddddd |
| 1869 | emit_move_r_imm32(SHR_R0, (pc + (op & 0xff) * 4 + 2) & ~3); |
| 1870 | goto end_op; |
| 1871 | case 0x0800: // TST #imm,R0 11001000iiiiiiii |
| 1872 | tmp = rcache_get_reg(SHR_R0, RC_GR_READ); |
| 1873 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1874 | if (drcf.delayed_op) |
| 1875 | DELAY_SAVE_T(sr); |
| 1876 | emith_bic_r_imm(sr, T); |
| 1877 | emith_tst_r_imm(tmp, op & 0xff); |
| 1878 | emit_or_t_if_eq(sr); |
| 1879 | goto end_op; |
| 1880 | case 0x0900: // AND #imm,R0 11001001iiiiiiii |
| 1881 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
| 1882 | emith_and_r_imm(tmp, op & 0xff); |
| 1883 | goto end_op; |
| 1884 | case 0x0a00: // XOR #imm,R0 11001010iiiiiiii |
| 1885 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
| 1886 | emith_eor_r_imm(tmp, op & 0xff); |
| 1887 | goto end_op; |
| 1888 | case 0x0b00: // OR #imm,R0 11001011iiiiiiii |
| 1889 | tmp = rcache_get_reg(SHR_R0, RC_GR_RMW); |
| 1890 | emith_or_r_imm(tmp, op & 0xff); |
| 1891 | goto end_op; |
| 1892 | case 0x0c00: // TST.B #imm,@(R0,GBR) 11001100iiiiiiii |
| 1893 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1894 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1895 | if (drcf.delayed_op) |
| 1896 | DELAY_SAVE_T(sr); |
| 1897 | emith_bic_r_imm(sr, T); |
| 1898 | emith_tst_r_imm(tmp, op & 0xff); |
| 1899 | emit_or_t_if_eq(sr); |
| 1900 | rcache_free_tmp(tmp); |
| 1901 | cycles += 2; |
| 1902 | goto end_op; |
| 1903 | case 0x0d00: // AND.B #imm,@(R0,GBR) 11001101iiiiiiii |
| 1904 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1905 | emith_and_r_imm(tmp, op & 0xff); |
| 1906 | goto end_rmw_op; |
| 1907 | case 0x0e00: // XOR.B #imm,@(R0,GBR) 11001110iiiiiiii |
| 1908 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1909 | emith_eor_r_imm(tmp, op & 0xff); |
| 1910 | goto end_rmw_op; |
| 1911 | case 0x0f00: // OR.B #imm,@(R0,GBR) 11001111iiiiiiii |
| 1912 | tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0); |
| 1913 | emith_or_r_imm(tmp, op & 0xff); |
| 1914 | end_rmw_op: |
| 1915 | tmp2 = rcache_get_tmp_arg(1); |
| 1916 | emith_move_r_r(tmp2, tmp); |
| 1917 | rcache_free_tmp(tmp); |
| 1918 | tmp3 = rcache_get_reg_arg(0, SHR_GBR); |
| 1919 | tmp4 = rcache_get_reg(SHR_R0, RC_GR_READ); |
| 1920 | emith_add_r_r(tmp3, tmp4); |
| 1921 | emit_memhandler_write(0); |
| 1922 | cycles += 2; |
| 1923 | goto end_op; |
| 1924 | } |
| 1925 | goto default_; |
| 1926 | |
| 1927 | ///////////////////////////////////////////// |
| 1928 | case 0x0d: |
| 1929 | // MOV.L @(disp,PC),Rn 1101nnnndddddddd |
| 1930 | rcache_clean(); |
| 1931 | tmp = rcache_get_tmp_arg(0); |
| 1932 | emith_move_r_imm(tmp, (pc + (op & 0xff) * 4 + 2) & ~3); |
| 1933 | tmp = emit_memhandler_read(2); |
| 1934 | tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1935 | emith_move_r_r(tmp2, tmp); |
| 1936 | rcache_free_tmp(tmp); |
| 1937 | goto end_op; |
| 1938 | |
| 1939 | ///////////////////////////////////////////// |
| 1940 | case 0x0e: |
| 1941 | // MOV #imm,Rn 1110nnnniiiiiiii |
| 1942 | tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE); |
| 1943 | emith_move_r_imm_s8(tmp, op & 0xff); |
| 1944 | goto end_op; |
| 1945 | |
| 1946 | default: |
| 1947 | default_: |
| 1948 | elprintf(EL_ANOMALY, "%csh2 drc: unhandled op %04x @ %08x", |
| 1949 | sh2->is_slave ? 's' : 'm', op, pc - 2); |
| 1950 | #ifdef DRC_DEBUG_INTERP |
| 1951 | emit_move_r_imm32(SHR_PC, pc - 2); |
| 1952 | rcache_flush(); |
| 1953 | emith_pass_arg_r(0, CONTEXT_REG); |
| 1954 | emith_pass_arg_imm(1, op); |
| 1955 | emith_call(sh2_do_op); |
| 1956 | #endif |
| 1957 | break; |
| 1958 | } |
| 1959 | |
| 1960 | end_op: |
| 1961 | // block-local conditional branch handling (with/without delay) |
| 1962 | if (branch_patch_cond != -1 && drcf.delayed_op != 2) { |
| 1963 | sr = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 1964 | // handle cycles |
| 1965 | emith_sub_r_imm(sr, cycles << 12); |
| 1966 | cycles = 0; |
| 1967 | rcache_clean(); |
| 1968 | |
| 1969 | if (drcf.use_saved_t) |
| 1970 | emith_tst_r_imm(sr, T_save); |
| 1971 | else |
| 1972 | emith_tst_r_imm(sr, T); |
| 1973 | branch_patch_ptr[branch_patch_count] = tcache_ptr; |
| 1974 | emith_jump_patchable(branch_patch_cond); |
| 1975 | |
| 1976 | drcf.use_saved_t = 0; |
| 1977 | branch_patch_cond = -1; |
| 1978 | branch_patch_count++; |
| 1979 | drcf.delayed_op = 0; // XXX: delayed_op ends block, so must override |
| 1980 | if (branch_patch_count == MAX_LOCAL_BRANCHES) { |
| 1981 | printf("too many local branches\n"); |
| 1982 | break; |
| 1983 | } |
| 1984 | } |
| 1985 | // test irq? |
| 1986 | if (drcf.test_irq && drcf.delayed_op != 2) |
| 1987 | break; |
| 1988 | if (drcf.delayed_op == 1) |
| 1989 | break; |
| 1990 | |
| 1991 | do_host_disasm(tcache_id); |
| 1992 | } |
| 1993 | |
| 1994 | // delayed_op means some kind of branch - PC already handled |
| 1995 | if (!drcf.delayed_op) |
| 1996 | emit_move_r_imm32(SHR_PC, pc); |
| 1997 | |
| 1998 | if (drcf.test_irq) { |
| 1999 | rcache_flush(); |
| 2000 | emith_pass_arg_r(0, CONTEXT_REG); |
| 2001 | emith_call(sh2_test_irq); |
| 2002 | } |
| 2003 | |
| 2004 | end_block_btf: |
| 2005 | this_block->end_addr = pc; |
| 2006 | |
| 2007 | tmp = rcache_get_reg(SHR_SR, RC_GR_RMW); |
| 2008 | emith_sub_r_imm(tmp, cycles << 12); |
| 2009 | rcache_flush(); |
| 2010 | emith_jump(sh2_drc_exit); |
| 2011 | |
| 2012 | // link local branches |
| 2013 | for (i = 0; i < branch_patch_count; i++) { |
| 2014 | void *target; |
| 2015 | int t; |
| 2016 | //printf("patch %08x %p\n", branch_patch_pc[i], branch_patch_ptr[i]); |
| 2017 | t = find_in_array(branch_target_pc, branch_target_count, branch_patch_pc[i]); |
| 2018 | if (branch_target_ptr[t] != NULL) |
| 2019 | target = branch_target_ptr[t]; |
| 2020 | else { |
| 2021 | // flush pc and go back to dispatcher (for now) |
| 2022 | printf("stray branch to %08x %p\n", branch_patch_pc[i], tcache_ptr); |
| 2023 | target = tcache_ptr; |
| 2024 | emit_move_r_imm32(SHR_PC, branch_patch_pc[i]); |
| 2025 | rcache_flush(); |
| 2026 | emith_jump(sh2_drc_exit); |
| 2027 | } |
| 2028 | emith_jump_patch(branch_patch_ptr[i], target); |
| 2029 | } |
| 2030 | |
| 2031 | // mark memory blocks as containing compiled code |
| 2032 | if (tcache_id != 0) { |
| 2033 | // data array, BIOS |
| 2034 | u16 *drcblk = Pico32xMem->drcblk_da[sh2->is_slave]; |
| 2035 | tmp = (this_block->addr & 0xfff) >> SH2_DRCBLK_DA_SHIFT; |
| 2036 | tmp2 = (this_block->end_addr & 0xfff) >> SH2_DRCBLK_DA_SHIFT; |
| 2037 | drcblk[tmp] = (blkid_main << 1) | 1; |
| 2038 | for (++tmp; tmp < tmp2; tmp++) { |
| 2039 | if (drcblk[tmp]) |
| 2040 | continue; // dont overwrite overlay block(s) |
| 2041 | drcblk[tmp] = blkid_main << 1; |
| 2042 | } |
| 2043 | } |
| 2044 | else if ((this_block->addr & 0xc7fc0000) == 0x06000000) { // DRAM |
| 2045 | tmp = (this_block->addr & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT; |
| 2046 | tmp2 = (this_block->end_addr & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT; |
| 2047 | Pico32xMem->drcblk_ram[tmp] = (blkid_main << 1) | 1; |
| 2048 | for (++tmp; tmp < tmp2; tmp++) { |
| 2049 | if (Pico32xMem->drcblk_ram[tmp]) |
| 2050 | continue; |
| 2051 | Pico32xMem->drcblk_ram[tmp] = blkid_main << 1; |
| 2052 | } |
| 2053 | } |
| 2054 | |
| 2055 | tcache_ptrs[tcache_id] = tcache_ptr; |
| 2056 | |
| 2057 | #ifdef ARM |
| 2058 | cache_flush_d_inval_i(block_entry, tcache_ptr); |
| 2059 | #endif |
| 2060 | |
| 2061 | do_host_disasm(tcache_id); |
| 2062 | dbg(1, " block #%d,%d tcache %d/%d, insns %d -> %d %.3f", |
| 2063 | tcache_id, block_counts[tcache_id], |
| 2064 | tcache_ptr - tcache_bases[tcache_id], tcache_sizes[tcache_id], |
| 2065 | insns_compiled, host_insn_count, (double)host_insn_count / insns_compiled); |
| 2066 | if ((sh2->pc & 0xc6000000) == 0x02000000) // ROM |
| 2067 | dbg(1, " hash collisions %d/%d", hash_collisions, block_counts[tcache_id]); |
| 2068 | /* |
| 2069 | printf("~~~\n"); |
| 2070 | tcache_dsm_ptrs[tcache_id] = block_entry; |
| 2071 | do_host_disasm(tcache_id); |
| 2072 | printf("~~~\n"); |
| 2073 | */ |
| 2074 | |
| 2075 | #if (DRC_DEBUG & 2) |
| 2076 | fflush(stdout); |
| 2077 | #endif |
| 2078 | |
| 2079 | return block_entry; |
| 2080 | /* |
| 2081 | unimplemented: |
| 2082 | // last op |
| 2083 | do_host_disasm(tcache_id); |
| 2084 | exit(1); |
| 2085 | */ |
| 2086 | } |
| 2087 | |
| 2088 | void __attribute__((noinline)) sh2_drc_dispatcher(SH2 *sh2) |
| 2089 | { |
| 2090 | // TODO: need to handle self-caused interrupts |
| 2091 | sh2_test_irq(sh2); |
| 2092 | |
| 2093 | while (((signed int)sh2->sr >> 12) > 0) |
| 2094 | { |
| 2095 | void *block = NULL; |
| 2096 | block_desc *bd = NULL; |
| 2097 | int tcache_id = 0; |
| 2098 | |
| 2099 | // FIXME: must avoid doing it so often.. |
| 2100 | //sh2_test_irq(sh2); |
| 2101 | |
| 2102 | // we have full block id tables for data_array and RAM |
| 2103 | // BIOS goes to data_array table too |
| 2104 | if ((sh2->pc & 0xe0000000) == 0xc0000000 || (sh2->pc & ~0xfff) == 0) { |
| 2105 | int blkid = Pico32xMem->drcblk_da[sh2->is_slave][(sh2->pc & 0xfff) >> SH2_DRCBLK_DA_SHIFT]; |
| 2106 | tcache_id = 1 + sh2->is_slave; |
| 2107 | if (blkid & 1) { |
| 2108 | bd = &block_tables[tcache_id][blkid >> 1]; |
| 2109 | block = bd->tcache_ptr; |
| 2110 | } |
| 2111 | } |
| 2112 | // RAM |
| 2113 | else if ((sh2->pc & 0xc6000000) == 0x06000000) { |
| 2114 | int blkid = Pico32xMem->drcblk_ram[(sh2->pc & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT]; |
| 2115 | if (blkid & 1) { |
| 2116 | bd = &block_tables[tcache_id][blkid >> 1]; |
| 2117 | block = bd->tcache_ptr; |
| 2118 | } |
| 2119 | } |
| 2120 | // ROM |
| 2121 | else if ((sh2->pc & 0xc6000000) == 0x02000000) { |
| 2122 | bd = HASH_FUNC(hash_table, sh2->pc); |
| 2123 | |
| 2124 | if (bd != NULL) { |
| 2125 | if (bd->addr == sh2->pc) |
| 2126 | block = bd->tcache_ptr; |
| 2127 | else |
| 2128 | block = dr_find_block(bd, sh2->pc); |
| 2129 | } |
| 2130 | } |
| 2131 | |
| 2132 | if (block == NULL) |
| 2133 | block = sh2_translate(sh2, tcache_id); |
| 2134 | if (block == NULL) { |
| 2135 | // sh2_translate failed, possibly tcache overflow, clean up and try again |
| 2136 | flush_tcache(tcache_id); |
| 2137 | block = sh2_translate(sh2, tcache_id); |
| 2138 | } |
| 2139 | |
| 2140 | dbg(4, "= %csh2 enter %08x %p, c=%d", sh2->is_slave ? 's' : 'm', |
| 2141 | sh2->pc, block, (signed int)sh2->sr >> 12); |
| 2142 | #if (DRC_DEBUG & 1) |
| 2143 | if (bd != NULL) |
| 2144 | bd->refcount++; |
| 2145 | #endif |
| 2146 | sh2_drc_entry(block, sh2); |
| 2147 | dbg(4, "= leave %p", block); |
| 2148 | } |
| 2149 | } |
| 2150 | |
| 2151 | static void sh2_smc_rm_block(u16 *drcblk, u16 *p, block_desc *btab, u32 a) |
| 2152 | { |
| 2153 | u16 id = *p >> 1; |
| 2154 | block_desc *bd = btab + id; |
| 2155 | |
| 2156 | // FIXME: skip subblocks; do both directions |
| 2157 | dbg(1, " killing block %08x", bd->addr); |
| 2158 | bd->addr = bd->end_addr = 0; |
| 2159 | |
| 2160 | while (p > drcblk && (p[-1] >> 1) == id) |
| 2161 | p--; |
| 2162 | |
| 2163 | // check for possible overlay block |
| 2164 | if (p > 0 && p[-1] != 0) { |
| 2165 | bd = btab + (p[-1] >> 1); |
| 2166 | if (bd->addr <= a && a < bd->end_addr) |
| 2167 | sh2_smc_rm_block(drcblk, p - 1, btab, a); |
| 2168 | } |
| 2169 | |
| 2170 | do { |
| 2171 | *p++ = 0; |
| 2172 | } |
| 2173 | while ((*p >> 1) == id); |
| 2174 | } |
| 2175 | |
| 2176 | void sh2_drc_wcheck_ram(unsigned int a, int val, int cpuid) |
| 2177 | { |
| 2178 | u16 *drcblk = Pico32xMem->drcblk_ram; |
| 2179 | u16 *p = drcblk + ((a & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT); |
| 2180 | |
| 2181 | dbg(1, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); |
| 2182 | sh2_smc_rm_block(drcblk, p, block_tables[0], a); |
| 2183 | } |
| 2184 | |
| 2185 | void sh2_drc_wcheck_da(unsigned int a, int val, int cpuid) |
| 2186 | { |
| 2187 | u16 *drcblk = Pico32xMem->drcblk_da[cpuid]; |
| 2188 | u16 *p = drcblk + ((a & 0xfff) >> SH2_DRCBLK_DA_SHIFT); |
| 2189 | |
| 2190 | dbg(1, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); |
| 2191 | sh2_smc_rm_block(drcblk, p, block_tables[1 + cpuid], a); |
| 2192 | } |
| 2193 | |
| 2194 | void sh2_execute(SH2 *sh2c, int cycles) |
| 2195 | { |
| 2196 | sh2 = sh2c; // XXX |
| 2197 | |
| 2198 | sh2c->cycles_aim += cycles; |
| 2199 | cycles = sh2c->cycles_aim - sh2c->cycles_done; |
| 2200 | |
| 2201 | // cycles are kept in SHR_SR unused bits (upper 20) |
| 2202 | // bit19 contains T saved for delay slot |
| 2203 | // others are usual SH2 flags |
| 2204 | sh2c->sr &= 0x3f3; |
| 2205 | sh2c->sr |= cycles << 12; |
| 2206 | sh2_drc_dispatcher(sh2c); |
| 2207 | |
| 2208 | sh2c->cycles_done += cycles - ((signed int)sh2c->sr >> 12); |
| 2209 | } |
| 2210 | |
| 2211 | static void REGPARM(1) sh2_test_irq(SH2 *sh2) |
| 2212 | { |
| 2213 | if (sh2->pending_level > ((sh2->sr >> 4) & 0x0f)) |
| 2214 | { |
| 2215 | if (sh2->pending_irl > sh2->pending_int_irq) |
| 2216 | sh2_do_irq(sh2, sh2->pending_irl, 64 + sh2->pending_irl/2); |
| 2217 | else { |
| 2218 | sh2_do_irq(sh2, sh2->pending_int_irq, sh2->pending_int_vector); |
| 2219 | sh2->pending_int_irq = 0; // auto-clear |
| 2220 | sh2->pending_level = sh2->pending_irl; |
| 2221 | } |
| 2222 | } |
| 2223 | } |
| 2224 | |
| 2225 | #if (DRC_DEBUG & 1) |
| 2226 | static void block_stats(void) |
| 2227 | { |
| 2228 | int c, b, i, total = 0; |
| 2229 | |
| 2230 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) |
| 2231 | for (i = 0; i < block_counts[b]; i++) |
| 2232 | if (block_tables[b][i].addr != 0) |
| 2233 | total += block_tables[b][i].refcount; |
| 2234 | |
| 2235 | for (c = 0; c < 10; c++) { |
| 2236 | block_desc *blk, *maxb = NULL; |
| 2237 | int max = 0; |
| 2238 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) { |
| 2239 | for (i = 0; i < block_counts[b]; i++) { |
| 2240 | blk = &block_tables[b][i]; |
| 2241 | if (blk->addr != 0 && blk->refcount > max) { |
| 2242 | max = blk->refcount; |
| 2243 | maxb = blk; |
| 2244 | } |
| 2245 | } |
| 2246 | } |
| 2247 | if (maxb == NULL) |
| 2248 | break; |
| 2249 | printf("%08x %9d %2.3f%%\n", maxb->addr, maxb->refcount, |
| 2250 | (double)maxb->refcount / total * 100.0); |
| 2251 | maxb->refcount = 0; |
| 2252 | } |
| 2253 | |
| 2254 | for (b = 0; b < ARRAY_SIZE(block_tables); b++) |
| 2255 | for (i = 0; i < block_counts[b]; i++) |
| 2256 | block_tables[b][i].refcount = 0; |
| 2257 | } |
| 2258 | #else |
| 2259 | #define block_stats() |
| 2260 | #endif |
| 2261 | |
| 2262 | void sh2_drc_flush_all(void) |
| 2263 | { |
| 2264 | block_stats(); |
| 2265 | flush_tcache(0); |
| 2266 | flush_tcache(1); |
| 2267 | flush_tcache(2); |
| 2268 | } |
| 2269 | |
| 2270 | int sh2_drc_init(SH2 *sh2) |
| 2271 | { |
| 2272 | if (block_tables[0] == NULL) { |
| 2273 | int i, cnt; |
| 2274 | |
| 2275 | drc_cmn_init(); |
| 2276 | |
| 2277 | cnt = block_max_counts[0] + block_max_counts[1] + block_max_counts[2]; |
| 2278 | block_tables[0] = calloc(cnt, sizeof(*block_tables[0])); |
| 2279 | if (block_tables[0] == NULL) |
| 2280 | return -1; |
| 2281 | |
| 2282 | tcache_ptr = tcache; |
| 2283 | sh2_generate_utils(); |
| 2284 | #ifdef ARM |
| 2285 | cache_flush_d_inval_i(tcache, tcache_ptr); |
| 2286 | #endif |
| 2287 | |
| 2288 | memset(block_counts, 0, sizeof(block_counts)); |
| 2289 | tcache_bases[0] = tcache_ptrs[0] = tcache_ptr; |
| 2290 | |
| 2291 | for (i = 1; i < ARRAY_SIZE(block_tables); i++) { |
| 2292 | block_tables[i] = block_tables[i - 1] + block_max_counts[i - 1]; |
| 2293 | tcache_bases[i] = tcache_ptrs[i] = tcache_bases[i - 1] + tcache_sizes[i - 1]; |
| 2294 | } |
| 2295 | |
| 2296 | // tmp |
| 2297 | PicoOpt |= POPT_DIS_VDP_FIFO; |
| 2298 | |
| 2299 | #if (DRC_DEBUG & 2) |
| 2300 | for (i = 0; i < ARRAY_SIZE(block_tables); i++) |
| 2301 | tcache_dsm_ptrs[i] = tcache_bases[i]; |
| 2302 | // disasm the utils |
| 2303 | tcache_dsm_ptrs[0] = tcache; |
| 2304 | do_host_disasm(0); |
| 2305 | #endif |
| 2306 | #if (DRC_DEBUG & 1) |
| 2307 | hash_collisions = 0; |
| 2308 | #endif |
| 2309 | } |
| 2310 | |
| 2311 | if (hash_table == NULL) { |
| 2312 | hash_table = calloc(sizeof(hash_table[0]), MAX_HASH_ENTRIES); |
| 2313 | if (hash_table == NULL) |
| 2314 | return -1; |
| 2315 | } |
| 2316 | |
| 2317 | return 0; |
| 2318 | } |
| 2319 | |
| 2320 | void sh2_drc_finish(SH2 *sh2) |
| 2321 | { |
| 2322 | if (block_tables[0] != NULL) { |
| 2323 | block_stats(); |
| 2324 | free(block_tables[0]); |
| 2325 | memset(block_tables, 0, sizeof(block_tables)); |
| 2326 | |
| 2327 | drc_cmn_cleanup(); |
| 2328 | } |
| 2329 | |
| 2330 | if (hash_table != NULL) { |
| 2331 | free(hash_table); |
| 2332 | hash_table = NULL; |
| 2333 | } |
| 2334 | } |