| 1 | /* |
| 2 | * Simulator for the Renesas (formerly Hitachi) H8/300 architecture. |
| 3 | * |
| 4 | * Written by Steve Chamberlain of Cygnus Support. sac@cygnus.com |
| 5 | * |
| 6 | * This file is part of H8/300 sim |
| 7 | * |
| 8 | * |
| 9 | * THIS SOFTWARE IS NOT COPYRIGHTED |
| 10 | * |
| 11 | * Cygnus offers the following for use in the public domain. Cygnus makes no |
| 12 | * warranty with regard to the software or its performance and the user |
| 13 | * accepts the software "AS IS" with all faults. |
| 14 | * |
| 15 | * CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO THIS |
| 16 | * SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY |
| 17 | * AND FITNESS FOR A PARTICULAR PURPOSE. |
| 18 | */ |
| 19 | |
| 20 | #include <signal.h> |
| 21 | #ifdef HAVE_TIME_H |
| 22 | #include <time.h> |
| 23 | #endif |
| 24 | #ifdef HAVE_STDLIB_H |
| 25 | #include <stdlib.h> |
| 26 | #endif |
| 27 | #ifdef HAVE_SYS_PARAM_H |
| 28 | #include <sys/param.h> |
| 29 | #endif |
| 30 | |
| 31 | #include "bfd.h" |
| 32 | #include "sim-main.h" |
| 33 | #include "gdb/sim-h8300.h" |
| 34 | #include "sys/stat.h" |
| 35 | #include "sys/types.h" |
| 36 | |
| 37 | #ifndef SIGTRAP |
| 38 | # define SIGTRAP 5 |
| 39 | #endif |
| 40 | |
| 41 | int debug; |
| 42 | |
| 43 | host_callback *sim_callback; |
| 44 | |
| 45 | static SIM_OPEN_KIND sim_kind; |
| 46 | static char *myname; |
| 47 | |
| 48 | /* FIXME: Needs to live in header file. |
| 49 | This header should also include the things in remote-sim.h. |
| 50 | One could move this to remote-sim.h but this function isn't needed |
| 51 | by gdb. */ |
| 52 | static void set_simcache_size (SIM_DESC, int); |
| 53 | |
| 54 | #define X(op, size) (op * 4 + size) |
| 55 | |
| 56 | #define SP (h8300hmode && !h8300_normal_mode ? SL : SW) |
| 57 | |
| 58 | #define h8_opcodes ops |
| 59 | #define DEFINE_TABLE |
| 60 | #include "opcode/h8300.h" |
| 61 | |
| 62 | /* CPU data object: */ |
| 63 | |
| 64 | static int |
| 65 | sim_state_initialize (SIM_DESC sd, sim_cpu *cpu) |
| 66 | { |
| 67 | /* FIXME: not really necessary, since sim_cpu_alloc calls zalloc. */ |
| 68 | |
| 69 | memset (&cpu->regs, 0, sizeof(cpu->regs)); |
| 70 | cpu->regs[SBR_REGNUM] = 0xFFFFFF00; |
| 71 | cpu->pc = 0; |
| 72 | cpu->delayed_branch = 0; |
| 73 | cpu->memory = NULL; |
| 74 | cpu->eightbit = NULL; |
| 75 | cpu->mask = 0; |
| 76 | |
| 77 | /* Initialize local simulator state. */ |
| 78 | sd->sim_cache = NULL; |
| 79 | sd->sim_cache_size = 0; |
| 80 | sd->cache_idx = NULL; |
| 81 | sd->cache_top = 0; |
| 82 | sd->memory_size = 0; |
| 83 | sd->compiles = 0; |
| 84 | #ifdef ADEBUG |
| 85 | memset (&cpu->stats, 0, sizeof (cpu->stats)); |
| 86 | #endif |
| 87 | return 0; |
| 88 | } |
| 89 | |
| 90 | static unsigned int |
| 91 | h8_get_pc (SIM_DESC sd) |
| 92 | { |
| 93 | return (STATE_CPU (sd, 0)) -> pc; |
| 94 | } |
| 95 | |
| 96 | static void |
| 97 | h8_set_pc (SIM_DESC sd, unsigned int val) |
| 98 | { |
| 99 | (STATE_CPU (sd, 0)) -> pc = val; |
| 100 | } |
| 101 | |
| 102 | static unsigned int |
| 103 | h8_get_ccr (SIM_DESC sd) |
| 104 | { |
| 105 | return (STATE_CPU (sd, 0)) -> regs[CCR_REGNUM]; |
| 106 | } |
| 107 | |
| 108 | static void |
| 109 | h8_set_ccr (SIM_DESC sd, unsigned int val) |
| 110 | { |
| 111 | (STATE_CPU (sd, 0)) -> regs[CCR_REGNUM] = val; |
| 112 | } |
| 113 | |
| 114 | static unsigned int |
| 115 | h8_get_exr (SIM_DESC sd) |
| 116 | { |
| 117 | return (STATE_CPU (sd, 0)) -> regs[EXR_REGNUM]; |
| 118 | } |
| 119 | |
| 120 | static void |
| 121 | h8_set_exr (SIM_DESC sd, unsigned int val) |
| 122 | { |
| 123 | (STATE_CPU (sd, 0)) -> regs[EXR_REGNUM] = val; |
| 124 | } |
| 125 | |
| 126 | static int |
| 127 | h8_get_sbr (SIM_DESC sd) |
| 128 | { |
| 129 | return (STATE_CPU (sd, 0)) -> regs[SBR_REGNUM]; |
| 130 | } |
| 131 | |
| 132 | static void |
| 133 | h8_set_sbr (SIM_DESC sd, int val) |
| 134 | { |
| 135 | (STATE_CPU (sd, 0)) -> regs[SBR_REGNUM] = val; |
| 136 | } |
| 137 | |
| 138 | static int |
| 139 | h8_get_vbr (SIM_DESC sd) |
| 140 | { |
| 141 | return (STATE_CPU (sd, 0)) -> regs[VBR_REGNUM]; |
| 142 | } |
| 143 | |
| 144 | static void |
| 145 | h8_set_vbr (SIM_DESC sd, int val) |
| 146 | { |
| 147 | (STATE_CPU (sd, 0)) -> regs[VBR_REGNUM] = val; |
| 148 | } |
| 149 | |
| 150 | static int |
| 151 | h8_get_cache_top (SIM_DESC sd) |
| 152 | { |
| 153 | return sd -> cache_top; |
| 154 | } |
| 155 | |
| 156 | static void |
| 157 | h8_set_cache_top (SIM_DESC sd, int val) |
| 158 | { |
| 159 | sd -> cache_top = val; |
| 160 | } |
| 161 | |
| 162 | static int |
| 163 | h8_get_mask (SIM_DESC sd) |
| 164 | { |
| 165 | return (STATE_CPU (sd, 0)) -> mask; |
| 166 | } |
| 167 | |
| 168 | static void |
| 169 | h8_set_mask (SIM_DESC sd, int val) |
| 170 | { |
| 171 | (STATE_CPU (sd, 0)) -> mask = val; |
| 172 | } |
| 173 | #if 0 |
| 174 | static int |
| 175 | h8_get_exception (SIM_DESC sd) |
| 176 | { |
| 177 | return (STATE_CPU (sd, 0)) -> exception; |
| 178 | } |
| 179 | |
| 180 | static void |
| 181 | h8_set_exception (SIM_DESC sd, int val) |
| 182 | { |
| 183 | (STATE_CPU (sd, 0)) -> exception = val; |
| 184 | } |
| 185 | |
| 186 | static enum h8300_sim_state |
| 187 | h8_get_state (SIM_DESC sd) |
| 188 | { |
| 189 | return sd -> state; |
| 190 | } |
| 191 | |
| 192 | static void |
| 193 | h8_set_state (SIM_DESC sd, enum h8300_sim_state val) |
| 194 | { |
| 195 | sd -> state = val; |
| 196 | } |
| 197 | #endif |
| 198 | static unsigned int |
| 199 | h8_get_cycles (SIM_DESC sd) |
| 200 | { |
| 201 | return (STATE_CPU (sd, 0)) -> regs[CYCLE_REGNUM]; |
| 202 | } |
| 203 | |
| 204 | static void |
| 205 | h8_set_cycles (SIM_DESC sd, unsigned int val) |
| 206 | { |
| 207 | (STATE_CPU (sd, 0)) -> regs[CYCLE_REGNUM] = val; |
| 208 | } |
| 209 | |
| 210 | static unsigned int |
| 211 | h8_get_insts (SIM_DESC sd) |
| 212 | { |
| 213 | return (STATE_CPU (sd, 0)) -> regs[INST_REGNUM]; |
| 214 | } |
| 215 | |
| 216 | static void |
| 217 | h8_set_insts (SIM_DESC sd, unsigned int val) |
| 218 | { |
| 219 | (STATE_CPU (sd, 0)) -> regs[INST_REGNUM] = val; |
| 220 | } |
| 221 | |
| 222 | static unsigned int |
| 223 | h8_get_ticks (SIM_DESC sd) |
| 224 | { |
| 225 | return (STATE_CPU (sd, 0)) -> regs[TICK_REGNUM]; |
| 226 | } |
| 227 | |
| 228 | static void |
| 229 | h8_set_ticks (SIM_DESC sd, unsigned int val) |
| 230 | { |
| 231 | (STATE_CPU (sd, 0)) -> regs[TICK_REGNUM] = val; |
| 232 | } |
| 233 | |
| 234 | static unsigned int |
| 235 | h8_get_mach (SIM_DESC sd) |
| 236 | { |
| 237 | return (STATE_CPU (sd, 0)) -> regs[MACH_REGNUM]; |
| 238 | } |
| 239 | |
| 240 | static void |
| 241 | h8_set_mach (SIM_DESC sd, unsigned int val) |
| 242 | { |
| 243 | (STATE_CPU (sd, 0)) -> regs[MACH_REGNUM] = val; |
| 244 | } |
| 245 | |
| 246 | static unsigned int |
| 247 | h8_get_macl (SIM_DESC sd) |
| 248 | { |
| 249 | return (STATE_CPU (sd, 0)) -> regs[MACL_REGNUM]; |
| 250 | } |
| 251 | |
| 252 | static void |
| 253 | h8_set_macl (SIM_DESC sd, unsigned int val) |
| 254 | { |
| 255 | (STATE_CPU (sd, 0)) -> regs[MACL_REGNUM] = val; |
| 256 | } |
| 257 | |
| 258 | static int |
| 259 | h8_get_compiles (SIM_DESC sd) |
| 260 | { |
| 261 | return sd -> compiles; |
| 262 | } |
| 263 | |
| 264 | static void |
| 265 | h8_increment_compiles (SIM_DESC sd) |
| 266 | { |
| 267 | sd -> compiles ++; |
| 268 | } |
| 269 | |
| 270 | static unsigned int * |
| 271 | h8_get_reg_buf (SIM_DESC sd) |
| 272 | { |
| 273 | return &(((STATE_CPU (sd, 0)) -> regs)[0]); |
| 274 | } |
| 275 | |
| 276 | static unsigned int |
| 277 | h8_get_reg (SIM_DESC sd, int regnum) |
| 278 | { |
| 279 | return (STATE_CPU (sd, 0)) -> regs[regnum]; |
| 280 | } |
| 281 | |
| 282 | static void |
| 283 | h8_set_reg (SIM_DESC sd, int regnum, int val) |
| 284 | { |
| 285 | (STATE_CPU (sd, 0)) -> regs[regnum] = val; |
| 286 | } |
| 287 | |
| 288 | #ifdef ADEBUG |
| 289 | static int |
| 290 | h8_get_stats (SIM_DESC sd, int idx) |
| 291 | { |
| 292 | return sd -> stats[idx]; |
| 293 | } |
| 294 | |
| 295 | static void |
| 296 | h8_increment_stats (SIM_DESC sd, int idx) |
| 297 | { |
| 298 | sd -> stats[idx] ++; |
| 299 | } |
| 300 | #endif /* ADEBUG */ |
| 301 | |
| 302 | static unsigned short * |
| 303 | h8_get_cache_idx_buf (SIM_DESC sd) |
| 304 | { |
| 305 | return sd -> cache_idx; |
| 306 | } |
| 307 | |
| 308 | static void |
| 309 | h8_set_cache_idx_buf (SIM_DESC sd, unsigned short *ptr) |
| 310 | { |
| 311 | sd -> cache_idx = ptr; |
| 312 | } |
| 313 | |
| 314 | static unsigned short |
| 315 | h8_get_cache_idx (SIM_DESC sd, unsigned int idx) |
| 316 | { |
| 317 | if (idx > sd->memory_size) |
| 318 | return (unsigned short) -1; |
| 319 | return sd -> cache_idx[idx]; |
| 320 | } |
| 321 | |
| 322 | static void |
| 323 | h8_set_cache_idx (SIM_DESC sd, int idx, unsigned int val) |
| 324 | { |
| 325 | sd -> cache_idx[idx] = (unsigned short) val; |
| 326 | } |
| 327 | |
| 328 | static unsigned char * |
| 329 | h8_get_memory_buf (SIM_DESC sd) |
| 330 | { |
| 331 | return (STATE_CPU (sd, 0)) -> memory; |
| 332 | } |
| 333 | |
| 334 | static void |
| 335 | h8_set_memory_buf (SIM_DESC sd, unsigned char *ptr) |
| 336 | { |
| 337 | (STATE_CPU (sd, 0)) -> memory = ptr; |
| 338 | } |
| 339 | |
| 340 | static unsigned char |
| 341 | h8_get_memory (SIM_DESC sd, int idx) |
| 342 | { |
| 343 | return (STATE_CPU (sd, 0)) -> memory[idx]; |
| 344 | } |
| 345 | |
| 346 | static void |
| 347 | h8_set_memory (SIM_DESC sd, int idx, unsigned int val) |
| 348 | { |
| 349 | (STATE_CPU (sd, 0)) -> memory[idx] = (unsigned char) val; |
| 350 | } |
| 351 | |
| 352 | static unsigned char * |
| 353 | h8_get_eightbit_buf (SIM_DESC sd) |
| 354 | { |
| 355 | return (STATE_CPU (sd, 0)) -> eightbit; |
| 356 | } |
| 357 | |
| 358 | static void |
| 359 | h8_set_eightbit_buf (SIM_DESC sd, unsigned char *ptr) |
| 360 | { |
| 361 | (STATE_CPU (sd, 0)) -> eightbit = ptr; |
| 362 | } |
| 363 | |
| 364 | static unsigned char |
| 365 | h8_get_eightbit (SIM_DESC sd, int idx) |
| 366 | { |
| 367 | return (STATE_CPU (sd, 0)) -> eightbit[idx]; |
| 368 | } |
| 369 | |
| 370 | static void |
| 371 | h8_set_eightbit (SIM_DESC sd, int idx, unsigned int val) |
| 372 | { |
| 373 | (STATE_CPU (sd, 0)) -> eightbit[idx] = (unsigned char) val; |
| 374 | } |
| 375 | |
| 376 | static unsigned int |
| 377 | h8_get_delayed_branch (SIM_DESC sd) |
| 378 | { |
| 379 | return (STATE_CPU (sd, 0)) -> delayed_branch; |
| 380 | } |
| 381 | |
| 382 | static void |
| 383 | h8_set_delayed_branch (SIM_DESC sd, unsigned int dest) |
| 384 | { |
| 385 | (STATE_CPU (sd, 0)) -> delayed_branch = dest; |
| 386 | } |
| 387 | |
| 388 | static char ** |
| 389 | h8_get_command_line (SIM_DESC sd) |
| 390 | { |
| 391 | return (STATE_CPU (sd, 0)) -> command_line; |
| 392 | } |
| 393 | |
| 394 | static void |
| 395 | h8_set_command_line (SIM_DESC sd, char ** val) |
| 396 | { |
| 397 | (STATE_CPU (sd, 0)) -> command_line = val; |
| 398 | } |
| 399 | |
| 400 | static char * |
| 401 | h8_get_cmdline_arg (SIM_DESC sd, int index) |
| 402 | { |
| 403 | return (STATE_CPU (sd, 0)) -> command_line[index]; |
| 404 | } |
| 405 | |
| 406 | static void |
| 407 | h8_set_cmdline_arg (SIM_DESC sd, int index, char * val) |
| 408 | { |
| 409 | (STATE_CPU (sd, 0)) -> command_line[index] = val; |
| 410 | } |
| 411 | |
| 412 | /* MAC Saturation Mode */ |
| 413 | static int |
| 414 | h8_get_macS (SIM_DESC sd) |
| 415 | { |
| 416 | return (STATE_CPU (sd, 0)) -> macS; |
| 417 | } |
| 418 | |
| 419 | static void |
| 420 | h8_set_macS (SIM_DESC sd, int val) |
| 421 | { |
| 422 | (STATE_CPU (sd, 0)) -> macS = (val != 0); |
| 423 | } |
| 424 | |
| 425 | /* MAC Zero Flag */ |
| 426 | static int |
| 427 | h8_get_macZ (SIM_DESC sd) |
| 428 | { |
| 429 | return (STATE_CPU (sd, 0)) -> macZ; |
| 430 | } |
| 431 | |
| 432 | static void |
| 433 | h8_set_macZ (SIM_DESC sd, int val) |
| 434 | { |
| 435 | (STATE_CPU (sd, 0)) -> macZ = (val != 0); |
| 436 | } |
| 437 | |
| 438 | /* MAC Negative Flag */ |
| 439 | static int |
| 440 | h8_get_macN (SIM_DESC sd) |
| 441 | { |
| 442 | return (STATE_CPU (sd, 0)) -> macN; |
| 443 | } |
| 444 | |
| 445 | static void |
| 446 | h8_set_macN (SIM_DESC sd, int val) |
| 447 | { |
| 448 | (STATE_CPU (sd, 0)) -> macN = (val != 0); |
| 449 | } |
| 450 | |
| 451 | /* MAC Overflow Flag */ |
| 452 | static int |
| 453 | h8_get_macV (SIM_DESC sd) |
| 454 | { |
| 455 | return (STATE_CPU (sd, 0)) -> macV; |
| 456 | } |
| 457 | |
| 458 | static void |
| 459 | h8_set_macV (SIM_DESC sd, int val) |
| 460 | { |
| 461 | (STATE_CPU (sd, 0)) -> macV = (val != 0); |
| 462 | } |
| 463 | |
| 464 | /* End CPU data object. */ |
| 465 | |
| 466 | /* The rate at which to call the host's poll_quit callback. */ |
| 467 | |
| 468 | enum { POLL_QUIT_INTERVAL = 0x80000 }; |
| 469 | |
| 470 | #define LOW_BYTE(x) ((x) & 0xff) |
| 471 | #define HIGH_BYTE(x) (((x) >> 8) & 0xff) |
| 472 | #define P(X, Y) ((X << 8) | Y) |
| 473 | |
| 474 | #define C (c != 0) |
| 475 | #define Z (nz == 0) |
| 476 | #define V (v != 0) |
| 477 | #define N (n != 0) |
| 478 | #define U (u != 0) |
| 479 | #define H (h != 0) |
| 480 | #define UI (ui != 0) |
| 481 | #define I (intMaskBit != 0) |
| 482 | |
| 483 | #define BUILDSR(SD) \ |
| 484 | h8_set_ccr (SD, (I << 7) | (UI << 6) | (H << 5) | (U << 4) \ |
| 485 | | (N << 3) | (Z << 2) | (V << 1) | C) |
| 486 | |
| 487 | #define GETSR(SD) \ |
| 488 | /* Get Status Register (flags). */ \ |
| 489 | c = (h8_get_ccr (sd) >> 0) & 1; \ |
| 490 | v = (h8_get_ccr (sd) >> 1) & 1; \ |
| 491 | nz = !((h8_get_ccr (sd) >> 2) & 1); \ |
| 492 | n = (h8_get_ccr (sd) >> 3) & 1; \ |
| 493 | u = (h8_get_ccr (sd) >> 4) & 1; \ |
| 494 | h = (h8_get_ccr (sd) >> 5) & 1; \ |
| 495 | ui = ((h8_get_ccr (sd) >> 6) & 1); \ |
| 496 | intMaskBit = (h8_get_ccr (sd) >> 7) & 1 |
| 497 | |
| 498 | |
| 499 | #ifdef __CHAR_IS_SIGNED__ |
| 500 | #define SEXTCHAR(x) ((char) (x)) |
| 501 | #endif |
| 502 | |
| 503 | #ifndef SEXTCHAR |
| 504 | #define SEXTCHAR(x) ((x & 0x80) ? (x | ~0xff) : x & 0xff) |
| 505 | #endif |
| 506 | |
| 507 | #define UEXTCHAR(x) ((x) & 0xff) |
| 508 | #define UEXTSHORT(x) ((x) & 0xffff) |
| 509 | #define SEXTSHORT(x) ((short) (x)) |
| 510 | |
| 511 | int h8300hmode = 0; |
| 512 | int h8300smode = 0; |
| 513 | int h8300_normal_mode = 0; |
| 514 | int h8300sxmode = 0; |
| 515 | |
| 516 | static int memory_size; |
| 517 | |
| 518 | static int |
| 519 | get_now (void) |
| 520 | { |
| 521 | return time (0); /* WinXX HAS UNIX like 'time', so why not use it? */ |
| 522 | } |
| 523 | |
| 524 | static int |
| 525 | now_persec (void) |
| 526 | { |
| 527 | return 1; |
| 528 | } |
| 529 | |
| 530 | static int |
| 531 | bitfrom (int x) |
| 532 | { |
| 533 | switch (x & SIZE) |
| 534 | { |
| 535 | case L_8: |
| 536 | return SB; |
| 537 | case L_16: |
| 538 | case L_16U: |
| 539 | return SW; |
| 540 | case L_32: |
| 541 | return SL; |
| 542 | case L_P: |
| 543 | return (h8300hmode && !h8300_normal_mode)? SL : SW; |
| 544 | } |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | /* Simulate an indirection / dereference. |
| 549 | return 0 for success, -1 for failure. |
| 550 | */ |
| 551 | |
| 552 | static unsigned int |
| 553 | lvalue (SIM_DESC sd, int x, int rn, unsigned int *val) |
| 554 | { |
| 555 | if (val == NULL) /* Paranoia. */ |
| 556 | return -1; |
| 557 | |
| 558 | switch (x / 4) |
| 559 | { |
| 560 | case OP_DISP: |
| 561 | if (rn == ZERO_REGNUM) |
| 562 | *val = X (OP_IMM, SP); |
| 563 | else |
| 564 | *val = X (OP_REG, SP); |
| 565 | break; |
| 566 | case OP_MEM: |
| 567 | *val = X (OP_MEM, SP); |
| 568 | break; |
| 569 | default: |
| 570 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); |
| 571 | return -1; |
| 572 | } |
| 573 | return 0; |
| 574 | } |
| 575 | |
| 576 | static int |
| 577 | cmdline_location() |
| 578 | { |
| 579 | if (h8300smode && !h8300_normal_mode) |
| 580 | return 0xffff00L; |
| 581 | else if (h8300hmode && !h8300_normal_mode) |
| 582 | return 0x2ff00L; |
| 583 | else |
| 584 | return 0xff00L; |
| 585 | } |
| 586 | |
| 587 | static void |
| 588 | decode (SIM_DESC sd, int addr, unsigned char *data, decoded_inst *dst) |
| 589 | { |
| 590 | int cst[3] = {0, 0, 0}; |
| 591 | int reg[3] = {0, 0, 0}; |
| 592 | int rdisp[3] = {0, 0, 0}; |
| 593 | int opnum; |
| 594 | const struct h8_opcode *q; |
| 595 | |
| 596 | dst->dst.type = -1; |
| 597 | dst->src.type = -1; |
| 598 | |
| 599 | /* Find the exact opcode/arg combo. */ |
| 600 | for (q = h8_opcodes; q->name; q++) |
| 601 | { |
| 602 | op_type *nib = q->data.nib; |
| 603 | unsigned int len = 0; |
| 604 | |
| 605 | if ((q->available == AV_H8SX && !h8300sxmode) || |
| 606 | (q->available == AV_H8S && !h8300smode) || |
| 607 | (q->available == AV_H8H && !h8300hmode)) |
| 608 | continue; |
| 609 | |
| 610 | cst[0] = cst[1] = cst[2] = 0; |
| 611 | reg[0] = reg[1] = reg[2] = 0; |
| 612 | rdisp[0] = rdisp[1] = rdisp[2] = 0; |
| 613 | |
| 614 | while (1) |
| 615 | { |
| 616 | op_type looking_for = *nib; |
| 617 | int thisnib = data[len / 2]; |
| 618 | |
| 619 | thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf); |
| 620 | opnum = ((looking_for & OP3) ? 2 : |
| 621 | (looking_for & DST) ? 1 : 0); |
| 622 | |
| 623 | if (looking_for < 16 && looking_for >= 0) |
| 624 | { |
| 625 | if (looking_for != thisnib) |
| 626 | goto fail; |
| 627 | } |
| 628 | else |
| 629 | { |
| 630 | if (looking_for & B31) |
| 631 | { |
| 632 | if (!((thisnib & 0x8) != 0)) |
| 633 | goto fail; |
| 634 | |
| 635 | looking_for = (op_type) (looking_for & ~B31); |
| 636 | thisnib &= 0x7; |
| 637 | } |
| 638 | else if (looking_for & B30) |
| 639 | { |
| 640 | if (!((thisnib & 0x8) == 0)) |
| 641 | goto fail; |
| 642 | |
| 643 | looking_for = (op_type) (looking_for & ~B30); |
| 644 | } |
| 645 | |
| 646 | if (looking_for & B21) |
| 647 | { |
| 648 | if (!((thisnib & 0x4) != 0)) |
| 649 | goto fail; |
| 650 | |
| 651 | looking_for = (op_type) (looking_for & ~B21); |
| 652 | thisnib &= 0xb; |
| 653 | } |
| 654 | else if (looking_for & B20) |
| 655 | { |
| 656 | if (!((thisnib & 0x4) == 0)) |
| 657 | goto fail; |
| 658 | |
| 659 | looking_for = (op_type) (looking_for & ~B20); |
| 660 | } |
| 661 | |
| 662 | if (looking_for & B11) |
| 663 | { |
| 664 | if (!((thisnib & 0x2) != 0)) |
| 665 | goto fail; |
| 666 | |
| 667 | looking_for = (op_type) (looking_for & ~B11); |
| 668 | thisnib &= 0xd; |
| 669 | } |
| 670 | else if (looking_for & B10) |
| 671 | { |
| 672 | if (!((thisnib & 0x2) == 0)) |
| 673 | goto fail; |
| 674 | |
| 675 | looking_for = (op_type) (looking_for & ~B10); |
| 676 | } |
| 677 | |
| 678 | if (looking_for & B01) |
| 679 | { |
| 680 | if (!((thisnib & 0x1) != 0)) |
| 681 | goto fail; |
| 682 | |
| 683 | looking_for = (op_type) (looking_for & ~B01); |
| 684 | thisnib &= 0xe; |
| 685 | } |
| 686 | else if (looking_for & B00) |
| 687 | { |
| 688 | if (!((thisnib & 0x1) == 0)) |
| 689 | goto fail; |
| 690 | |
| 691 | looking_for = (op_type) (looking_for & ~B00); |
| 692 | } |
| 693 | |
| 694 | if (looking_for & IGNORE) |
| 695 | { |
| 696 | /* Hitachi has declared that IGNORE must be zero. */ |
| 697 | if (thisnib != 0) |
| 698 | goto fail; |
| 699 | } |
| 700 | else if ((looking_for & MODE) == DATA) |
| 701 | { |
| 702 | ; /* Skip embedded data. */ |
| 703 | } |
| 704 | else if ((looking_for & MODE) == DBIT) |
| 705 | { |
| 706 | /* Exclude adds/subs by looking at bit 0 and 2, and |
| 707 | make sure the operand size, either w or l, |
| 708 | matches by looking at bit 1. */ |
| 709 | if ((looking_for & 7) != (thisnib & 7)) |
| 710 | goto fail; |
| 711 | |
| 712 | cst[opnum] = (thisnib & 0x8) ? 2 : 1; |
| 713 | } |
| 714 | else if ((looking_for & MODE) == REG || |
| 715 | (looking_for & MODE) == LOWREG || |
| 716 | (looking_for & MODE) == IND || |
| 717 | (looking_for & MODE) == PREINC || |
| 718 | (looking_for & MODE) == POSTINC || |
| 719 | (looking_for & MODE) == PREDEC || |
| 720 | (looking_for & MODE) == POSTDEC) |
| 721 | { |
| 722 | reg[opnum] = thisnib; |
| 723 | } |
| 724 | else if (looking_for & CTRL) |
| 725 | { |
| 726 | thisnib &= 7; |
| 727 | if (((looking_for & MODE) == CCR && (thisnib != C_CCR)) || |
| 728 | ((looking_for & MODE) == EXR && (thisnib != C_EXR)) || |
| 729 | ((looking_for & MODE) == MACH && (thisnib != C_MACH)) || |
| 730 | ((looking_for & MODE) == MACL && (thisnib != C_MACL)) || |
| 731 | ((looking_for & MODE) == VBR && (thisnib != C_VBR)) || |
| 732 | ((looking_for & MODE) == SBR && (thisnib != C_SBR))) |
| 733 | goto fail; |
| 734 | if (((looking_for & MODE) == CCR_EXR && |
| 735 | (thisnib != C_CCR && thisnib != C_EXR)) || |
| 736 | ((looking_for & MODE) == VBR_SBR && |
| 737 | (thisnib != C_VBR && thisnib != C_SBR)) || |
| 738 | ((looking_for & MODE) == MACREG && |
| 739 | (thisnib != C_MACH && thisnib != C_MACL))) |
| 740 | goto fail; |
| 741 | if (((looking_for & MODE) == CC_EX_VB_SB && |
| 742 | (thisnib != C_CCR && thisnib != C_EXR && |
| 743 | thisnib != C_VBR && thisnib != C_SBR))) |
| 744 | goto fail; |
| 745 | |
| 746 | reg[opnum] = thisnib; |
| 747 | } |
| 748 | else if ((looking_for & MODE) == ABS) |
| 749 | { |
| 750 | /* Absolute addresses are unsigned. */ |
| 751 | switch (looking_for & SIZE) |
| 752 | { |
| 753 | case L_8: |
| 754 | cst[opnum] = UEXTCHAR (data[len / 2]); |
| 755 | break; |
| 756 | case L_16: |
| 757 | case L_16U: |
| 758 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; |
| 759 | break; |
| 760 | case L_32: |
| 761 | cst[opnum] = |
| 762 | (data[len / 2 + 0] << 24) + |
| 763 | (data[len / 2 + 1] << 16) + |
| 764 | (data[len / 2 + 2] << 8) + |
| 765 | (data[len / 2 + 3]); |
| 766 | break; |
| 767 | default: |
| 768 | printf ("decode: bad size ABS: %d\n", |
| 769 | (looking_for & SIZE)); |
| 770 | goto end; |
| 771 | } |
| 772 | } |
| 773 | else if ((looking_for & MODE) == DISP || |
| 774 | (looking_for & MODE) == PCREL || |
| 775 | (looking_for & MODE) == INDEXB || |
| 776 | (looking_for & MODE) == INDEXW || |
| 777 | (looking_for & MODE) == INDEXL) |
| 778 | { |
| 779 | switch (looking_for & SIZE) |
| 780 | { |
| 781 | case L_2: |
| 782 | cst[opnum] = thisnib & 3; |
| 783 | break; |
| 784 | case L_8: |
| 785 | cst[opnum] = SEXTCHAR (data[len / 2]); |
| 786 | break; |
| 787 | case L_16: |
| 788 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; |
| 789 | cst[opnum] = (short) cst[opnum]; /* Sign extend. */ |
| 790 | break; |
| 791 | case L_16U: |
| 792 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; |
| 793 | break; |
| 794 | case L_32: |
| 795 | cst[opnum] = |
| 796 | (data[len / 2 + 0] << 24) + |
| 797 | (data[len / 2 + 1] << 16) + |
| 798 | (data[len / 2 + 2] << 8) + |
| 799 | (data[len / 2 + 3]); |
| 800 | break; |
| 801 | default: |
| 802 | printf ("decode: bad size DISP/PCREL/INDEX: %d\n", |
| 803 | (looking_for & SIZE)); |
| 804 | goto end; |
| 805 | } |
| 806 | } |
| 807 | else if ((looking_for & SIZE) == L_16 || |
| 808 | (looking_for & SIZE) == L_16U) |
| 809 | { |
| 810 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; |
| 811 | /* Immediates are always unsigned. */ |
| 812 | if ((looking_for & SIZE) != L_16U && |
| 813 | (looking_for & MODE) != IMM) |
| 814 | cst[opnum] = (short) cst[opnum]; /* Sign extend. */ |
| 815 | } |
| 816 | else if (looking_for & ABSJMP) |
| 817 | { |
| 818 | switch (looking_for & SIZE) { |
| 819 | case L_24: |
| 820 | cst[opnum] = (data[1] << 16) | (data[2] << 8) | (data[3]); |
| 821 | break; |
| 822 | case L_32: |
| 823 | cst[opnum] = |
| 824 | (data[len / 2 + 0] << 24) + |
| 825 | (data[len / 2 + 1] << 16) + |
| 826 | (data[len / 2 + 2] << 8) + |
| 827 | (data[len / 2 + 3]); |
| 828 | break; |
| 829 | default: |
| 830 | printf ("decode: bad size ABSJMP: %d\n", |
| 831 | (looking_for & SIZE)); |
| 832 | goto end; |
| 833 | } |
| 834 | } |
| 835 | else if ((looking_for & MODE) == MEMIND) |
| 836 | { |
| 837 | cst[opnum] = data[1]; |
| 838 | } |
| 839 | else if ((looking_for & MODE) == VECIND) |
| 840 | { |
| 841 | if(h8300_normal_mode) |
| 842 | cst[opnum] = ((data[1] & 0x7f) + 0x80) * 2; |
| 843 | else |
| 844 | cst[opnum] = ((data[1] & 0x7f) + 0x80) * 4; |
| 845 | cst[opnum] += h8_get_vbr (sd); /* Add vector base reg. */ |
| 846 | } |
| 847 | else if ((looking_for & SIZE) == L_32) |
| 848 | { |
| 849 | int i = len / 2; |
| 850 | |
| 851 | cst[opnum] = |
| 852 | (data[i + 0] << 24) | |
| 853 | (data[i + 1] << 16) | |
| 854 | (data[i + 2] << 8) | |
| 855 | (data[i + 3]); |
| 856 | } |
| 857 | else if ((looking_for & SIZE) == L_24) |
| 858 | { |
| 859 | int i = len / 2; |
| 860 | |
| 861 | cst[opnum] = |
| 862 | (data[i + 0] << 16) | |
| 863 | (data[i + 1] << 8) | |
| 864 | (data[i + 2]); |
| 865 | } |
| 866 | else if (looking_for & DISPREG) |
| 867 | { |
| 868 | rdisp[opnum] = thisnib & 0x7; |
| 869 | } |
| 870 | else if ((looking_for & MODE) == KBIT) |
| 871 | { |
| 872 | switch (thisnib) |
| 873 | { |
| 874 | case 9: |
| 875 | cst[opnum] = 4; |
| 876 | break; |
| 877 | case 8: |
| 878 | cst[opnum] = 2; |
| 879 | break; |
| 880 | case 0: |
| 881 | cst[opnum] = 1; |
| 882 | break; |
| 883 | default: |
| 884 | goto fail; |
| 885 | } |
| 886 | } |
| 887 | else if ((looking_for & SIZE) == L_8) |
| 888 | { |
| 889 | if ((looking_for & MODE) == ABS) |
| 890 | { |
| 891 | /* Will be combined with contents of SBR_REGNUM |
| 892 | by fetch (). For all modes except h8sx, this |
| 893 | will always contain the value 0xFFFFFF00. */ |
| 894 | cst[opnum] = data[len / 2] & 0xff; |
| 895 | } |
| 896 | else |
| 897 | { |
| 898 | cst[opnum] = data[len / 2] & 0xff; |
| 899 | } |
| 900 | } |
| 901 | else if ((looking_for & SIZE) == L_2) |
| 902 | { |
| 903 | cst[opnum] = thisnib & 3; |
| 904 | } |
| 905 | else if ((looking_for & SIZE) == L_3 || |
| 906 | (looking_for & SIZE) == L_3NZ) |
| 907 | { |
| 908 | cst[opnum] = thisnib & 7; |
| 909 | if (cst[opnum] == 0 && (looking_for & SIZE) == L_3NZ) |
| 910 | goto fail; |
| 911 | } |
| 912 | else if ((looking_for & SIZE) == L_4) |
| 913 | { |
| 914 | cst[opnum] = thisnib & 15; |
| 915 | } |
| 916 | else if ((looking_for & SIZE) == L_5) |
| 917 | { |
| 918 | cst[opnum] = data[len / 2] & 0x1f; |
| 919 | } |
| 920 | else if (looking_for == E) |
| 921 | { |
| 922 | #ifdef ADEBUG |
| 923 | dst->op = q; |
| 924 | #endif |
| 925 | /* Fill in the args. */ |
| 926 | { |
| 927 | op_type *args = q->args.nib; |
| 928 | int hadone = 0; |
| 929 | int nargs; |
| 930 | |
| 931 | for (nargs = 0; |
| 932 | nargs < 3 && *args != E; |
| 933 | nargs++) |
| 934 | { |
| 935 | int x = *args; |
| 936 | ea_type *p; |
| 937 | |
| 938 | opnum = ((x & OP3) ? 2 : |
| 939 | (x & DST) ? 1 : 0); |
| 940 | if (x & DST) |
| 941 | p = &dst->dst; |
| 942 | else if (x & OP3) |
| 943 | p = &dst->op3; |
| 944 | else |
| 945 | p = &dst->src; |
| 946 | |
| 947 | if ((x & MODE) == IMM || |
| 948 | (x & MODE) == KBIT || |
| 949 | (x & MODE) == DBIT) |
| 950 | { |
| 951 | /* Use the instruction to determine |
| 952 | the operand size. */ |
| 953 | p->type = X (OP_IMM, OP_SIZE (q->how)); |
| 954 | p->literal = cst[opnum]; |
| 955 | } |
| 956 | else if ((x & MODE) == CONST_2 || |
| 957 | (x & MODE) == CONST_4 || |
| 958 | (x & MODE) == CONST_8 || |
| 959 | (x & MODE) == CONST_16) |
| 960 | { |
| 961 | /* Use the instruction to determine |
| 962 | the operand size. */ |
| 963 | p->type = X (OP_IMM, OP_SIZE (q->how)); |
| 964 | switch (x & MODE) { |
| 965 | case CONST_2: p->literal = 2; break; |
| 966 | case CONST_4: p->literal = 4; break; |
| 967 | case CONST_8: p->literal = 8; break; |
| 968 | case CONST_16: p->literal = 16; break; |
| 969 | } |
| 970 | } |
| 971 | else if ((x & MODE) == REG) |
| 972 | { |
| 973 | p->type = X (OP_REG, bitfrom (x)); |
| 974 | p->reg = reg[opnum]; |
| 975 | } |
| 976 | else if ((x & MODE) == LOWREG) |
| 977 | { |
| 978 | p->type = X (OP_LOWREG, bitfrom (x)); |
| 979 | p->reg = reg[opnum]; |
| 980 | } |
| 981 | else if ((x & MODE) == PREINC) |
| 982 | { |
| 983 | /* Use the instruction to determine |
| 984 | the operand size. */ |
| 985 | p->type = X (OP_PREINC, OP_SIZE (q->how)); |
| 986 | p->reg = reg[opnum] & 0x7; |
| 987 | } |
| 988 | else if ((x & MODE) == POSTINC) |
| 989 | { |
| 990 | /* Use the instruction to determine |
| 991 | the operand size. */ |
| 992 | p->type = X (OP_POSTINC, OP_SIZE (q->how)); |
| 993 | p->reg = reg[opnum] & 0x7; |
| 994 | } |
| 995 | else if ((x & MODE) == PREDEC) |
| 996 | { |
| 997 | /* Use the instruction to determine |
| 998 | the operand size. */ |
| 999 | p->type = X (OP_PREDEC, OP_SIZE (q->how)); |
| 1000 | p->reg = reg[opnum] & 0x7; |
| 1001 | } |
| 1002 | else if ((x & MODE) == POSTDEC) |
| 1003 | { |
| 1004 | /* Use the instruction to determine |
| 1005 | the operand size. */ |
| 1006 | p->type = X (OP_POSTDEC, OP_SIZE (q->how)); |
| 1007 | p->reg = reg[opnum] & 0x7; |
| 1008 | } |
| 1009 | else if ((x & MODE) == IND) |
| 1010 | { |
| 1011 | /* Note: an indirect is transformed into |
| 1012 | a displacement of zero. |
| 1013 | */ |
| 1014 | /* Use the instruction to determine |
| 1015 | the operand size. */ |
| 1016 | p->type = X (OP_DISP, OP_SIZE (q->how)); |
| 1017 | p->reg = reg[opnum] & 0x7; |
| 1018 | p->literal = 0; |
| 1019 | if (OP_KIND (q->how) == O_JSR || |
| 1020 | OP_KIND (q->how) == O_JMP) |
| 1021 | if (lvalue (sd, p->type, p->reg, &p->type)) |
| 1022 | goto end; |
| 1023 | } |
| 1024 | else if ((x & MODE) == ABS) |
| 1025 | { |
| 1026 | /* Note: a 16 or 32 bit ABS is transformed into a |
| 1027 | displacement from pseudo-register ZERO_REGNUM, |
| 1028 | which is always zero. An 8 bit ABS becomes |
| 1029 | a displacement from SBR_REGNUM. |
| 1030 | */ |
| 1031 | /* Use the instruction to determine |
| 1032 | the operand size. */ |
| 1033 | p->type = X (OP_DISP, OP_SIZE (q->how)); |
| 1034 | p->literal = cst[opnum]; |
| 1035 | |
| 1036 | /* 8-bit ABS is displacement from SBR. |
| 1037 | 16 and 32-bit ABS are displacement from ZERO. |
| 1038 | (SBR will always be zero except for h8/sx) |
| 1039 | */ |
| 1040 | if ((x & SIZE) == L_8) |
| 1041 | p->reg = SBR_REGNUM; |
| 1042 | else |
| 1043 | p->reg = ZERO_REGNUM;; |
| 1044 | } |
| 1045 | else if ((x & MODE) == MEMIND || |
| 1046 | (x & MODE) == VECIND) |
| 1047 | { |
| 1048 | /* Size doesn't matter. */ |
| 1049 | p->type = X (OP_MEM, SB); |
| 1050 | p->literal = cst[opnum]; |
| 1051 | if (OP_KIND (q->how) == O_JSR || |
| 1052 | OP_KIND (q->how) == O_JMP) |
| 1053 | if (lvalue (sd, p->type, p->reg, &p->type)) |
| 1054 | goto end; |
| 1055 | } |
| 1056 | else if ((x & MODE) == PCREL) |
| 1057 | { |
| 1058 | /* Size doesn't matter. */ |
| 1059 | p->type = X (OP_PCREL, SB); |
| 1060 | p->literal = cst[opnum]; |
| 1061 | } |
| 1062 | else if (x & ABSJMP) |
| 1063 | { |
| 1064 | p->type = X (OP_IMM, SP); |
| 1065 | p->literal = cst[opnum]; |
| 1066 | } |
| 1067 | else if ((x & MODE) == INDEXB) |
| 1068 | { |
| 1069 | p->type = X (OP_INDEXB, OP_SIZE (q->how)); |
| 1070 | p->literal = cst[opnum]; |
| 1071 | p->reg = rdisp[opnum]; |
| 1072 | } |
| 1073 | else if ((x & MODE) == INDEXW) |
| 1074 | { |
| 1075 | p->type = X (OP_INDEXW, OP_SIZE (q->how)); |
| 1076 | p->literal = cst[opnum]; |
| 1077 | p->reg = rdisp[opnum]; |
| 1078 | } |
| 1079 | else if ((x & MODE) == INDEXL) |
| 1080 | { |
| 1081 | p->type = X (OP_INDEXL, OP_SIZE (q->how)); |
| 1082 | p->literal = cst[opnum]; |
| 1083 | p->reg = rdisp[opnum]; |
| 1084 | } |
| 1085 | else if ((x & MODE) == DISP) |
| 1086 | { |
| 1087 | /* Yuck -- special for mova args. */ |
| 1088 | if (strncmp (q->name, "mova", 4) == 0 && |
| 1089 | (x & SIZE) == L_2) |
| 1090 | { |
| 1091 | /* Mova can have a DISP2 dest, with an |
| 1092 | INDEXB or INDEXW src. The multiplier |
| 1093 | for the displacement value is determined |
| 1094 | by the src operand, not by the insn. */ |
| 1095 | |
| 1096 | switch (OP_KIND (dst->src.type)) |
| 1097 | { |
| 1098 | case OP_INDEXB: |
| 1099 | p->type = X (OP_DISP, SB); |
| 1100 | p->literal = cst[opnum]; |
| 1101 | break; |
| 1102 | case OP_INDEXW: |
| 1103 | p->type = X (OP_DISP, SW); |
| 1104 | p->literal = cst[opnum] * 2; |
| 1105 | break; |
| 1106 | default: |
| 1107 | goto fail; |
| 1108 | } |
| 1109 | } |
| 1110 | else |
| 1111 | { |
| 1112 | p->type = X (OP_DISP, OP_SIZE (q->how)); |
| 1113 | p->literal = cst[opnum]; |
| 1114 | /* DISP2 is special. */ |
| 1115 | if ((x & SIZE) == L_2) |
| 1116 | switch (OP_SIZE (q->how)) |
| 1117 | { |
| 1118 | case SB: break; |
| 1119 | case SW: p->literal *= 2; break; |
| 1120 | case SL: p->literal *= 4; break; |
| 1121 | } |
| 1122 | } |
| 1123 | p->reg = rdisp[opnum]; |
| 1124 | } |
| 1125 | else if (x & CTRL) |
| 1126 | { |
| 1127 | switch (reg[opnum]) |
| 1128 | { |
| 1129 | case C_CCR: |
| 1130 | p->type = X (OP_CCR, SB); |
| 1131 | break; |
| 1132 | case C_EXR: |
| 1133 | p->type = X (OP_EXR, SB); |
| 1134 | break; |
| 1135 | case C_MACH: |
| 1136 | p->type = X (OP_MACH, SL); |
| 1137 | break; |
| 1138 | case C_MACL: |
| 1139 | p->type = X (OP_MACL, SL); |
| 1140 | break; |
| 1141 | case C_VBR: |
| 1142 | p->type = X (OP_VBR, SL); |
| 1143 | break; |
| 1144 | case C_SBR: |
| 1145 | p->type = X (OP_SBR, SL); |
| 1146 | break; |
| 1147 | } |
| 1148 | } |
| 1149 | else if ((x & MODE) == CCR) |
| 1150 | { |
| 1151 | p->type = OP_CCR; |
| 1152 | } |
| 1153 | else if ((x & MODE) == EXR) |
| 1154 | { |
| 1155 | p->type = OP_EXR; |
| 1156 | } |
| 1157 | else |
| 1158 | printf ("Hmmmm 0x%x...\n", x); |
| 1159 | |
| 1160 | args++; |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | /* Unary operators: treat src and dst as equivalent. */ |
| 1165 | if (dst->dst.type == -1) |
| 1166 | dst->dst = dst->src; |
| 1167 | if (dst->src.type == -1) |
| 1168 | dst->src = dst->dst; |
| 1169 | |
| 1170 | dst->opcode = q->how; |
| 1171 | dst->cycles = q->time; |
| 1172 | |
| 1173 | /* And jsr's to these locations are turned into |
| 1174 | magic traps. */ |
| 1175 | |
| 1176 | if (OP_KIND (dst->opcode) == O_JSR) |
| 1177 | { |
| 1178 | switch (dst->src.literal) |
| 1179 | { |
| 1180 | case 0xc5: |
| 1181 | dst->opcode = O (O_SYS_OPEN, SB); |
| 1182 | break; |
| 1183 | case 0xc6: |
| 1184 | dst->opcode = O (O_SYS_READ, SB); |
| 1185 | break; |
| 1186 | case 0xc7: |
| 1187 | dst->opcode = O (O_SYS_WRITE, SB); |
| 1188 | break; |
| 1189 | case 0xc8: |
| 1190 | dst->opcode = O (O_SYS_LSEEK, SB); |
| 1191 | break; |
| 1192 | case 0xc9: |
| 1193 | dst->opcode = O (O_SYS_CLOSE, SB); |
| 1194 | break; |
| 1195 | case 0xca: |
| 1196 | dst->opcode = O (O_SYS_STAT, SB); |
| 1197 | break; |
| 1198 | case 0xcb: |
| 1199 | dst->opcode = O (O_SYS_FSTAT, SB); |
| 1200 | break; |
| 1201 | case 0xcc: |
| 1202 | dst->opcode = O (O_SYS_CMDLINE, SB); |
| 1203 | break; |
| 1204 | } |
| 1205 | /* End of Processing for system calls. */ |
| 1206 | } |
| 1207 | |
| 1208 | dst->next_pc = addr + len / 2; |
| 1209 | return; |
| 1210 | } |
| 1211 | else |
| 1212 | printf ("Don't understand 0x%x \n", looking_for); |
| 1213 | } |
| 1214 | |
| 1215 | len++; |
| 1216 | nib++; |
| 1217 | } |
| 1218 | |
| 1219 | fail: |
| 1220 | ; |
| 1221 | } |
| 1222 | end: |
| 1223 | /* Fell off the end. */ |
| 1224 | dst->opcode = O (O_ILL, SB); |
| 1225 | } |
| 1226 | |
| 1227 | static void |
| 1228 | compile (SIM_DESC sd, int pc) |
| 1229 | { |
| 1230 | int idx; |
| 1231 | |
| 1232 | /* Find the next cache entry to use. */ |
| 1233 | idx = h8_get_cache_top (sd) + 1; |
| 1234 | h8_increment_compiles (sd); |
| 1235 | if (idx >= sd->sim_cache_size) |
| 1236 | { |
| 1237 | idx = 1; |
| 1238 | } |
| 1239 | h8_set_cache_top (sd, idx); |
| 1240 | |
| 1241 | /* Throw away its old meaning. */ |
| 1242 | h8_set_cache_idx (sd, sd->sim_cache[idx].oldpc, 0); |
| 1243 | |
| 1244 | /* Set to new address. */ |
| 1245 | sd->sim_cache[idx].oldpc = pc; |
| 1246 | |
| 1247 | /* Fill in instruction info. */ |
| 1248 | decode (sd, pc, h8_get_memory_buf (sd) + pc, sd->sim_cache + idx); |
| 1249 | |
| 1250 | /* Point to new cache entry. */ |
| 1251 | h8_set_cache_idx (sd, pc, idx); |
| 1252 | } |
| 1253 | |
| 1254 | |
| 1255 | static unsigned char *breg[32]; |
| 1256 | static unsigned short *wreg[16]; |
| 1257 | static unsigned int *lreg[18]; |
| 1258 | |
| 1259 | #define GET_B_REG(X) *(breg[X]) |
| 1260 | #define SET_B_REG(X, Y) (*(breg[X])) = (Y) |
| 1261 | #define GET_W_REG(X) *(wreg[X]) |
| 1262 | #define SET_W_REG(X, Y) (*(wreg[X])) = (Y) |
| 1263 | #define GET_L_REG(X) h8_get_reg (sd, X) |
| 1264 | #define SET_L_REG(X, Y) h8_set_reg (sd, X, Y) |
| 1265 | |
| 1266 | #define GET_MEMORY_L(X) \ |
| 1267 | ((X) < memory_size \ |
| 1268 | ? ((h8_get_memory (sd, (X)+0) << 24) | (h8_get_memory (sd, (X)+1) << 16) \ |
| 1269 | | (h8_get_memory (sd, (X)+2) << 8) | (h8_get_memory (sd, (X)+3) << 0)) \ |
| 1270 | : ((h8_get_eightbit (sd, ((X)+0) & 0xff) << 24) \ |
| 1271 | | (h8_get_eightbit (sd, ((X)+1) & 0xff) << 16) \ |
| 1272 | | (h8_get_eightbit (sd, ((X)+2) & 0xff) << 8) \ |
| 1273 | | (h8_get_eightbit (sd, ((X)+3) & 0xff) << 0))) |
| 1274 | |
| 1275 | #define GET_MEMORY_W(X) \ |
| 1276 | ((X) < memory_size \ |
| 1277 | ? ((h8_get_memory (sd, (X)+0) << 8) \ |
| 1278 | | (h8_get_memory (sd, (X)+1) << 0)) \ |
| 1279 | : ((h8_get_eightbit (sd, ((X)+0) & 0xff) << 8) \ |
| 1280 | | (h8_get_eightbit (sd, ((X)+1) & 0xff) << 0))) |
| 1281 | |
| 1282 | |
| 1283 | #define GET_MEMORY_B(X) \ |
| 1284 | ((X) < memory_size ? (h8_get_memory (sd, (X))) \ |
| 1285 | : (h8_get_eightbit (sd, (X) & 0xff))) |
| 1286 | |
| 1287 | #define SET_MEMORY_L(X, Y) \ |
| 1288 | { register unsigned char *_p; register int __y = (Y); \ |
| 1289 | _p = ((X) < memory_size ? h8_get_memory_buf (sd) + (X) : \ |
| 1290 | h8_get_eightbit_buf (sd) + ((X) & 0xff)); \ |
| 1291 | _p[0] = __y >> 24; _p[1] = __y >> 16; \ |
| 1292 | _p[2] = __y >> 8; _p[3] = __y >> 0; \ |
| 1293 | } |
| 1294 | |
| 1295 | #define SET_MEMORY_W(X, Y) \ |
| 1296 | { register unsigned char *_p; register int __y = (Y); \ |
| 1297 | _p = ((X) < memory_size ? h8_get_memory_buf (sd) + (X) : \ |
| 1298 | h8_get_eightbit_buf (sd) + ((X) & 0xff)); \ |
| 1299 | _p[0] = __y >> 8; _p[1] = __y; \ |
| 1300 | } |
| 1301 | |
| 1302 | #define SET_MEMORY_B(X, Y) \ |
| 1303 | ((X) < memory_size ? (h8_set_memory (sd, (X), (Y))) \ |
| 1304 | : (h8_set_eightbit (sd, (X) & 0xff, (Y)))) |
| 1305 | |
| 1306 | /* Simulate a memory fetch. |
| 1307 | Return 0 for success, -1 for failure. |
| 1308 | */ |
| 1309 | |
| 1310 | static int |
| 1311 | fetch_1 (SIM_DESC sd, ea_type *arg, int *val, int twice) |
| 1312 | { |
| 1313 | int rn = arg->reg; |
| 1314 | int abs = arg->literal; |
| 1315 | int r; |
| 1316 | int t; |
| 1317 | |
| 1318 | if (val == NULL) |
| 1319 | return -1; /* Paranoia. */ |
| 1320 | |
| 1321 | switch (arg->type) |
| 1322 | { |
| 1323 | /* Indexed register plus displacement mode: |
| 1324 | |
| 1325 | This new family of addressing modes are similar to OP_DISP |
| 1326 | (register plus displacement), with two differences: |
| 1327 | 1) INDEXB uses only the least significant byte of the register, |
| 1328 | INDEXW uses only the least significant word, and |
| 1329 | INDEXL uses the entire register (just like OP_DISP). |
| 1330 | and |
| 1331 | 2) The displacement value in abs is multiplied by two |
| 1332 | for SW-sized operations, and by four for SL-size. |
| 1333 | |
| 1334 | This gives nine possible variations. |
| 1335 | */ |
| 1336 | |
| 1337 | case X (OP_INDEXB, SB): |
| 1338 | case X (OP_INDEXB, SW): |
| 1339 | case X (OP_INDEXB, SL): |
| 1340 | case X (OP_INDEXW, SB): |
| 1341 | case X (OP_INDEXW, SW): |
| 1342 | case X (OP_INDEXW, SL): |
| 1343 | case X (OP_INDEXL, SB): |
| 1344 | case X (OP_INDEXL, SW): |
| 1345 | case X (OP_INDEXL, SL): |
| 1346 | t = GET_L_REG (rn); |
| 1347 | switch (OP_KIND (arg->type)) { |
| 1348 | case OP_INDEXB: t &= 0xff; break; |
| 1349 | case OP_INDEXW: t &= 0xffff; break; |
| 1350 | case OP_INDEXL: |
| 1351 | default: break; |
| 1352 | } |
| 1353 | switch (OP_SIZE (arg->type)) { |
| 1354 | case SB: |
| 1355 | *val = GET_MEMORY_B ((t * 1 + abs) & h8_get_mask (sd)); |
| 1356 | break; |
| 1357 | case SW: |
| 1358 | *val = GET_MEMORY_W ((t * 2 + abs) & h8_get_mask (sd)); |
| 1359 | break; |
| 1360 | case SL: |
| 1361 | *val = GET_MEMORY_L ((t * 4 + abs) & h8_get_mask (sd)); |
| 1362 | break; |
| 1363 | } |
| 1364 | break; |
| 1365 | |
| 1366 | case X (OP_LOWREG, SB): |
| 1367 | *val = GET_L_REG (rn) & 0xff; |
| 1368 | break; |
| 1369 | case X (OP_LOWREG, SW): |
| 1370 | *val = GET_L_REG (rn) & 0xffff; |
| 1371 | break; |
| 1372 | |
| 1373 | case X (OP_REG, SB): /* Register direct, byte. */ |
| 1374 | *val = GET_B_REG (rn); |
| 1375 | break; |
| 1376 | case X (OP_REG, SW): /* Register direct, word. */ |
| 1377 | *val = GET_W_REG (rn); |
| 1378 | break; |
| 1379 | case X (OP_REG, SL): /* Register direct, long. */ |
| 1380 | *val = GET_L_REG (rn); |
| 1381 | break; |
| 1382 | case X (OP_IMM, SB): /* Immediate, byte. */ |
| 1383 | case X (OP_IMM, SW): /* Immediate, word. */ |
| 1384 | case X (OP_IMM, SL): /* Immediate, long. */ |
| 1385 | *val = abs; |
| 1386 | break; |
| 1387 | case X (OP_POSTINC, SB): /* Register indirect w/post-incr: byte. */ |
| 1388 | t = GET_L_REG (rn); |
| 1389 | t &= h8_get_mask (sd); |
| 1390 | r = GET_MEMORY_B (t); |
| 1391 | if (!twice) |
| 1392 | t += 1; |
| 1393 | t = t & h8_get_mask (sd); |
| 1394 | SET_L_REG (rn, t); |
| 1395 | *val = r; |
| 1396 | break; |
| 1397 | case X (OP_POSTINC, SW): /* Register indirect w/post-incr: word. */ |
| 1398 | t = GET_L_REG (rn); |
| 1399 | t &= h8_get_mask (sd); |
| 1400 | r = GET_MEMORY_W (t); |
| 1401 | if (!twice) |
| 1402 | t += 2; |
| 1403 | t = t & h8_get_mask (sd); |
| 1404 | SET_L_REG (rn, t); |
| 1405 | *val = r; |
| 1406 | break; |
| 1407 | case X (OP_POSTINC, SL): /* Register indirect w/post-incr: long. */ |
| 1408 | t = GET_L_REG (rn); |
| 1409 | t &= h8_get_mask (sd); |
| 1410 | r = GET_MEMORY_L (t); |
| 1411 | if (!twice) |
| 1412 | t += 4; |
| 1413 | t = t & h8_get_mask (sd); |
| 1414 | SET_L_REG (rn, t); |
| 1415 | *val = r; |
| 1416 | break; |
| 1417 | |
| 1418 | case X (OP_POSTDEC, SB): /* Register indirect w/post-decr: byte. */ |
| 1419 | t = GET_L_REG (rn); |
| 1420 | t &= h8_get_mask (sd); |
| 1421 | r = GET_MEMORY_B (t); |
| 1422 | if (!twice) |
| 1423 | t -= 1; |
| 1424 | t = t & h8_get_mask (sd); |
| 1425 | SET_L_REG (rn, t); |
| 1426 | *val = r; |
| 1427 | break; |
| 1428 | case X (OP_POSTDEC, SW): /* Register indirect w/post-decr: word. */ |
| 1429 | t = GET_L_REG (rn); |
| 1430 | t &= h8_get_mask (sd); |
| 1431 | r = GET_MEMORY_W (t); |
| 1432 | if (!twice) |
| 1433 | t -= 2; |
| 1434 | t = t & h8_get_mask (sd); |
| 1435 | SET_L_REG (rn, t); |
| 1436 | *val = r; |
| 1437 | break; |
| 1438 | case X (OP_POSTDEC, SL): /* Register indirect w/post-decr: long. */ |
| 1439 | t = GET_L_REG (rn); |
| 1440 | t &= h8_get_mask (sd); |
| 1441 | r = GET_MEMORY_L (t); |
| 1442 | if (!twice) |
| 1443 | t -= 4; |
| 1444 | t = t & h8_get_mask (sd); |
| 1445 | SET_L_REG (rn, t); |
| 1446 | *val = r; |
| 1447 | break; |
| 1448 | |
| 1449 | case X (OP_PREDEC, SB): /* Register indirect w/pre-decr: byte. */ |
| 1450 | t = GET_L_REG (rn) - 1; |
| 1451 | t &= h8_get_mask (sd); |
| 1452 | SET_L_REG (rn, t); |
| 1453 | *val = GET_MEMORY_B (t); |
| 1454 | break; |
| 1455 | |
| 1456 | case X (OP_PREDEC, SW): /* Register indirect w/pre-decr: word. */ |
| 1457 | t = GET_L_REG (rn) - 2; |
| 1458 | t &= h8_get_mask (sd); |
| 1459 | SET_L_REG (rn, t); |
| 1460 | *val = GET_MEMORY_W (t); |
| 1461 | break; |
| 1462 | |
| 1463 | case X (OP_PREDEC, SL): /* Register indirect w/pre-decr: long. */ |
| 1464 | t = GET_L_REG (rn) - 4; |
| 1465 | t &= h8_get_mask (sd); |
| 1466 | SET_L_REG (rn, t); |
| 1467 | *val = GET_MEMORY_L (t); |
| 1468 | break; |
| 1469 | |
| 1470 | case X (OP_PREINC, SB): /* Register indirect w/pre-incr: byte. */ |
| 1471 | t = GET_L_REG (rn) + 1; |
| 1472 | t &= h8_get_mask (sd); |
| 1473 | SET_L_REG (rn, t); |
| 1474 | *val = GET_MEMORY_B (t); |
| 1475 | break; |
| 1476 | |
| 1477 | case X (OP_PREINC, SW): /* Register indirect w/pre-incr: long. */ |
| 1478 | t = GET_L_REG (rn) + 2; |
| 1479 | t &= h8_get_mask (sd); |
| 1480 | SET_L_REG (rn, t); |
| 1481 | *val = GET_MEMORY_W (t); |
| 1482 | break; |
| 1483 | |
| 1484 | case X (OP_PREINC, SL): /* Register indirect w/pre-incr: long. */ |
| 1485 | t = GET_L_REG (rn) + 4; |
| 1486 | t &= h8_get_mask (sd); |
| 1487 | SET_L_REG (rn, t); |
| 1488 | *val = GET_MEMORY_L (t); |
| 1489 | break; |
| 1490 | |
| 1491 | case X (OP_DISP, SB): /* Register indirect w/displacement: byte. */ |
| 1492 | t = GET_L_REG (rn) + abs; |
| 1493 | t &= h8_get_mask (sd); |
| 1494 | *val = GET_MEMORY_B (t); |
| 1495 | break; |
| 1496 | |
| 1497 | case X (OP_DISP, SW): /* Register indirect w/displacement: word. */ |
| 1498 | t = GET_L_REG (rn) + abs; |
| 1499 | t &= h8_get_mask (sd); |
| 1500 | *val = GET_MEMORY_W (t); |
| 1501 | break; |
| 1502 | |
| 1503 | case X (OP_DISP, SL): /* Register indirect w/displacement: long. */ |
| 1504 | t = GET_L_REG (rn) + abs; |
| 1505 | t &= h8_get_mask (sd); |
| 1506 | *val =GET_MEMORY_L (t); |
| 1507 | break; |
| 1508 | |
| 1509 | case X (OP_MEM, SL): /* Absolute memory address, long. */ |
| 1510 | t = GET_MEMORY_L (abs); |
| 1511 | t &= h8_get_mask (sd); |
| 1512 | *val = t; |
| 1513 | break; |
| 1514 | |
| 1515 | case X (OP_MEM, SW): /* Absolute memory address, word. */ |
| 1516 | t = GET_MEMORY_W (abs); |
| 1517 | t &= h8_get_mask (sd); |
| 1518 | *val = t; |
| 1519 | break; |
| 1520 | |
| 1521 | case X (OP_PCREL, SB): /* PC relative (for jump, branch etc). */ |
| 1522 | case X (OP_PCREL, SW): |
| 1523 | case X (OP_PCREL, SL): |
| 1524 | case X (OP_PCREL, SN): |
| 1525 | *val = abs; |
| 1526 | break; |
| 1527 | |
| 1528 | case X (OP_MEM, SB): /* Why isn't this implemented? */ |
| 1529 | default: |
| 1530 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); |
| 1531 | return -1; |
| 1532 | } |
| 1533 | return 0; /* Success. */ |
| 1534 | } |
| 1535 | |
| 1536 | /* Normal fetch. */ |
| 1537 | |
| 1538 | static int |
| 1539 | fetch (SIM_DESC sd, ea_type *arg, int *val) |
| 1540 | { |
| 1541 | return fetch_1 (sd, arg, val, 0); |
| 1542 | } |
| 1543 | |
| 1544 | /* Fetch which will be followed by a store to the same location. |
| 1545 | The difference being that we don't want to do a post-increment |
| 1546 | or post-decrement at this time: we'll do it when we store. */ |
| 1547 | |
| 1548 | static int |
| 1549 | fetch2 (SIM_DESC sd, ea_type *arg, int *val) |
| 1550 | { |
| 1551 | return fetch_1 (sd, arg, val, 1); |
| 1552 | } |
| 1553 | |
| 1554 | /* Simulate a memory store. |
| 1555 | Return 0 for success, -1 for failure. |
| 1556 | */ |
| 1557 | |
| 1558 | static int |
| 1559 | store_1 (SIM_DESC sd, ea_type *arg, int n, int twice) |
| 1560 | { |
| 1561 | int rn = arg->reg; |
| 1562 | int abs = arg->literal; |
| 1563 | int t; |
| 1564 | |
| 1565 | switch (arg->type) |
| 1566 | { |
| 1567 | /* Indexed register plus displacement mode: |
| 1568 | |
| 1569 | This new family of addressing modes are similar to OP_DISP |
| 1570 | (register plus displacement), with two differences: |
| 1571 | 1) INDEXB uses only the least significant byte of the register, |
| 1572 | INDEXW uses only the least significant word, and |
| 1573 | INDEXL uses the entire register (just like OP_DISP). |
| 1574 | and |
| 1575 | 2) The displacement value in abs is multiplied by two |
| 1576 | for SW-sized operations, and by four for SL-size. |
| 1577 | |
| 1578 | This gives nine possible variations. |
| 1579 | */ |
| 1580 | |
| 1581 | case X (OP_INDEXB, SB): |
| 1582 | case X (OP_INDEXB, SW): |
| 1583 | case X (OP_INDEXB, SL): |
| 1584 | case X (OP_INDEXW, SB): |
| 1585 | case X (OP_INDEXW, SW): |
| 1586 | case X (OP_INDEXW, SL): |
| 1587 | case X (OP_INDEXL, SB): |
| 1588 | case X (OP_INDEXL, SW): |
| 1589 | case X (OP_INDEXL, SL): |
| 1590 | t = GET_L_REG (rn); |
| 1591 | switch (OP_KIND (arg->type)) { |
| 1592 | case OP_INDEXB: t &= 0xff; break; |
| 1593 | case OP_INDEXW: t &= 0xffff; break; |
| 1594 | case OP_INDEXL: |
| 1595 | default: break; |
| 1596 | } |
| 1597 | switch (OP_SIZE (arg->type)) { |
| 1598 | case SB: |
| 1599 | SET_MEMORY_B ((t * 1 + abs) & h8_get_mask (sd), n); |
| 1600 | break; |
| 1601 | case SW: |
| 1602 | SET_MEMORY_W ((t * 2 + abs) & h8_get_mask (sd), n); |
| 1603 | break; |
| 1604 | case SL: |
| 1605 | SET_MEMORY_L ((t * 4 + abs) & h8_get_mask (sd), n); |
| 1606 | break; |
| 1607 | } |
| 1608 | break; |
| 1609 | |
| 1610 | case X (OP_REG, SB): /* Register direct, byte. */ |
| 1611 | SET_B_REG (rn, n); |
| 1612 | break; |
| 1613 | case X (OP_REG, SW): /* Register direct, word. */ |
| 1614 | SET_W_REG (rn, n); |
| 1615 | break; |
| 1616 | case X (OP_REG, SL): /* Register direct, long. */ |
| 1617 | SET_L_REG (rn, n); |
| 1618 | break; |
| 1619 | |
| 1620 | case X (OP_PREDEC, SB): /* Register indirect w/pre-decr, byte. */ |
| 1621 | t = GET_L_REG (rn); |
| 1622 | if (!twice) |
| 1623 | t -= 1; |
| 1624 | t &= h8_get_mask (sd); |
| 1625 | SET_L_REG (rn, t); |
| 1626 | SET_MEMORY_B (t, n); |
| 1627 | |
| 1628 | break; |
| 1629 | case X (OP_PREDEC, SW): /* Register indirect w/pre-decr, word. */ |
| 1630 | t = GET_L_REG (rn); |
| 1631 | if (!twice) |
| 1632 | t -= 2; |
| 1633 | t &= h8_get_mask (sd); |
| 1634 | SET_L_REG (rn, t); |
| 1635 | SET_MEMORY_W (t, n); |
| 1636 | break; |
| 1637 | |
| 1638 | case X (OP_PREDEC, SL): /* Register indirect w/pre-decr, long. */ |
| 1639 | t = GET_L_REG (rn); |
| 1640 | if (!twice) |
| 1641 | t -= 4; |
| 1642 | t &= h8_get_mask (sd); |
| 1643 | SET_L_REG (rn, t); |
| 1644 | SET_MEMORY_L (t, n); |
| 1645 | break; |
| 1646 | |
| 1647 | case X (OP_PREINC, SB): /* Register indirect w/pre-incr, byte. */ |
| 1648 | t = GET_L_REG (rn); |
| 1649 | if (!twice) |
| 1650 | t += 1; |
| 1651 | t &= h8_get_mask (sd); |
| 1652 | SET_L_REG (rn, t); |
| 1653 | SET_MEMORY_B (t, n); |
| 1654 | |
| 1655 | break; |
| 1656 | case X (OP_PREINC, SW): /* Register indirect w/pre-incr, word. */ |
| 1657 | t = GET_L_REG (rn); |
| 1658 | if (!twice) |
| 1659 | t += 2; |
| 1660 | t &= h8_get_mask (sd); |
| 1661 | SET_L_REG (rn, t); |
| 1662 | SET_MEMORY_W (t, n); |
| 1663 | break; |
| 1664 | |
| 1665 | case X (OP_PREINC, SL): /* Register indirect w/pre-incr, long. */ |
| 1666 | t = GET_L_REG (rn); |
| 1667 | if (!twice) |
| 1668 | t += 4; |
| 1669 | t &= h8_get_mask (sd); |
| 1670 | SET_L_REG (rn, t); |
| 1671 | SET_MEMORY_L (t, n); |
| 1672 | break; |
| 1673 | |
| 1674 | case X (OP_POSTDEC, SB): /* Register indirect w/post-decr, byte. */ |
| 1675 | t = GET_L_REG (rn) & h8_get_mask (sd); |
| 1676 | SET_MEMORY_B (t, n); |
| 1677 | SET_L_REG (rn, t - 1); |
| 1678 | break; |
| 1679 | |
| 1680 | case X (OP_POSTDEC, SW): /* Register indirect w/post-decr, word. */ |
| 1681 | t = GET_L_REG (rn) & h8_get_mask (sd); |
| 1682 | SET_MEMORY_W (t, n); |
| 1683 | SET_L_REG (rn, t - 2); |
| 1684 | break; |
| 1685 | |
| 1686 | case X (OP_POSTDEC, SL): /* Register indirect w/post-decr, long. */ |
| 1687 | t = GET_L_REG (rn) & h8_get_mask (sd); |
| 1688 | SET_MEMORY_L (t, n); |
| 1689 | SET_L_REG (rn, t - 4); |
| 1690 | break; |
| 1691 | |
| 1692 | case X (OP_POSTINC, SB): /* Register indirect w/post-incr, byte. */ |
| 1693 | t = GET_L_REG (rn) & h8_get_mask (sd); |
| 1694 | SET_MEMORY_B (t, n); |
| 1695 | SET_L_REG (rn, t + 1); |
| 1696 | break; |
| 1697 | |
| 1698 | case X (OP_POSTINC, SW): /* Register indirect w/post-incr, word. */ |
| 1699 | t = GET_L_REG (rn) & h8_get_mask (sd); |
| 1700 | SET_MEMORY_W (t, n); |
| 1701 | SET_L_REG (rn, t + 2); |
| 1702 | break; |
| 1703 | |
| 1704 | case X (OP_POSTINC, SL): /* Register indirect w/post-incr, long. */ |
| 1705 | t = GET_L_REG (rn) & h8_get_mask (sd); |
| 1706 | SET_MEMORY_L (t, n); |
| 1707 | SET_L_REG (rn, t + 4); |
| 1708 | break; |
| 1709 | |
| 1710 | case X (OP_DISP, SB): /* Register indirect w/displacement, byte. */ |
| 1711 | t = GET_L_REG (rn) + abs; |
| 1712 | t &= h8_get_mask (sd); |
| 1713 | SET_MEMORY_B (t, n); |
| 1714 | break; |
| 1715 | |
| 1716 | case X (OP_DISP, SW): /* Register indirect w/displacement, word. */ |
| 1717 | t = GET_L_REG (rn) + abs; |
| 1718 | t &= h8_get_mask (sd); |
| 1719 | SET_MEMORY_W (t, n); |
| 1720 | break; |
| 1721 | |
| 1722 | case X (OP_DISP, SL): /* Register indirect w/displacement, long. */ |
| 1723 | t = GET_L_REG (rn) + abs; |
| 1724 | t &= h8_get_mask (sd); |
| 1725 | SET_MEMORY_L (t, n); |
| 1726 | break; |
| 1727 | |
| 1728 | |
| 1729 | case X (OP_MEM, SB): /* Why isn't this implemented? */ |
| 1730 | case X (OP_MEM, SW): /* Why isn't this implemented? */ |
| 1731 | case X (OP_MEM, SL): /* Why isn't this implemented? */ |
| 1732 | default: |
| 1733 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); |
| 1734 | return -1; |
| 1735 | } |
| 1736 | return 0; |
| 1737 | } |
| 1738 | |
| 1739 | /* Normal store. */ |
| 1740 | |
| 1741 | static int |
| 1742 | store (SIM_DESC sd, ea_type *arg, int n) |
| 1743 | { |
| 1744 | return store_1 (sd, arg, n, 0); |
| 1745 | } |
| 1746 | |
| 1747 | /* Store which follows a fetch from the same location. |
| 1748 | The difference being that we don't want to do a pre-increment |
| 1749 | or pre-decrement at this time: it was already done when we fetched. */ |
| 1750 | |
| 1751 | static int |
| 1752 | store2 (SIM_DESC sd, ea_type *arg, int n) |
| 1753 | { |
| 1754 | return store_1 (sd, arg, n, 1); |
| 1755 | } |
| 1756 | |
| 1757 | static union |
| 1758 | { |
| 1759 | short int i; |
| 1760 | struct |
| 1761 | { |
| 1762 | char low; |
| 1763 | char high; |
| 1764 | } |
| 1765 | u; |
| 1766 | } littleendian; |
| 1767 | |
| 1768 | /* Flag to be set whenever a new SIM_DESC object is created. */ |
| 1769 | static int init_pointers_needed = 1; |
| 1770 | |
| 1771 | static void |
| 1772 | init_pointers (SIM_DESC sd) |
| 1773 | { |
| 1774 | if (init_pointers_needed) |
| 1775 | { |
| 1776 | int i; |
| 1777 | |
| 1778 | littleendian.i = 1; |
| 1779 | |
| 1780 | if (h8300smode && !h8300_normal_mode) |
| 1781 | memory_size = H8300S_MSIZE; |
| 1782 | else if (h8300hmode && !h8300_normal_mode) |
| 1783 | memory_size = H8300H_MSIZE; |
| 1784 | else |
| 1785 | memory_size = H8300_MSIZE; |
| 1786 | /* `msize' must be a power of two. */ |
| 1787 | if ((memory_size & (memory_size - 1)) != 0) |
| 1788 | { |
| 1789 | (*sim_callback->printf_filtered) |
| 1790 | (sim_callback, |
| 1791 | "init_pointers: bad memory size %d, defaulting to %d.\n", |
| 1792 | memory_size, memory_size = H8300S_MSIZE); |
| 1793 | } |
| 1794 | |
| 1795 | if (h8_get_memory_buf (sd)) |
| 1796 | free (h8_get_memory_buf (sd)); |
| 1797 | if (h8_get_cache_idx_buf (sd)) |
| 1798 | free (h8_get_cache_idx_buf (sd)); |
| 1799 | if (h8_get_eightbit_buf (sd)) |
| 1800 | free (h8_get_eightbit_buf (sd)); |
| 1801 | |
| 1802 | h8_set_memory_buf (sd, (unsigned char *) |
| 1803 | calloc (sizeof (char), memory_size)); |
| 1804 | h8_set_cache_idx_buf (sd, (unsigned short *) |
| 1805 | calloc (sizeof (short), memory_size)); |
| 1806 | sd->memory_size = memory_size; |
| 1807 | h8_set_eightbit_buf (sd, (unsigned char *) calloc (sizeof (char), 256)); |
| 1808 | |
| 1809 | h8_set_mask (sd, memory_size - 1); |
| 1810 | |
| 1811 | memset (h8_get_reg_buf (sd), 0, sizeof (((STATE_CPU (sd, 0))->regs))); |
| 1812 | |
| 1813 | for (i = 0; i < 8; i++) |
| 1814 | { |
| 1815 | /* FIXME: rewrite using local buffer. */ |
| 1816 | unsigned char *p = (unsigned char *) (h8_get_reg_buf (sd) + i); |
| 1817 | unsigned char *e = (unsigned char *) (h8_get_reg_buf (sd) + i + 1); |
| 1818 | unsigned short *q = (unsigned short *) (h8_get_reg_buf (sd) + i); |
| 1819 | unsigned short *u = (unsigned short *) (h8_get_reg_buf (sd) + i + 1); |
| 1820 | h8_set_reg (sd, i, 0x00112233); |
| 1821 | |
| 1822 | while (p < e) |
| 1823 | { |
| 1824 | if (*p == 0x22) |
| 1825 | breg[i] = p; |
| 1826 | if (*p == 0x33) |
| 1827 | breg[i + 8] = p; |
| 1828 | if (*p == 0x11) |
| 1829 | breg[i + 16] = p; |
| 1830 | if (*p == 0x00) |
| 1831 | breg[i + 24] = p; |
| 1832 | p++; |
| 1833 | } |
| 1834 | |
| 1835 | wreg[i] = wreg[i + 8] = 0; |
| 1836 | while (q < u) |
| 1837 | { |
| 1838 | if (*q == 0x2233) |
| 1839 | { |
| 1840 | wreg[i] = q; |
| 1841 | } |
| 1842 | if (*q == 0x0011) |
| 1843 | { |
| 1844 | wreg[i + 8] = q; |
| 1845 | } |
| 1846 | q++; |
| 1847 | } |
| 1848 | |
| 1849 | if (wreg[i] == 0 || wreg[i + 8] == 0) |
| 1850 | (*sim_callback->printf_filtered) (sim_callback, |
| 1851 | "init_pointers: internal error.\n"); |
| 1852 | |
| 1853 | h8_set_reg (sd, i, 0); |
| 1854 | lreg[i] = h8_get_reg_buf (sd) + i; |
| 1855 | } |
| 1856 | |
| 1857 | /* Note: sim uses pseudo-register ZERO as a zero register. */ |
| 1858 | lreg[ZERO_REGNUM] = h8_get_reg_buf (sd) + ZERO_REGNUM; |
| 1859 | init_pointers_needed = 0; |
| 1860 | |
| 1861 | /* Initialize the seg registers. */ |
| 1862 | if (!sd->sim_cache) |
| 1863 | set_simcache_size (sd, CSIZE); |
| 1864 | } |
| 1865 | } |
| 1866 | |
| 1867 | /* Grotty global variable for use by control_c signal handler. */ |
| 1868 | static SIM_DESC control_c_sim_desc; |
| 1869 | |
| 1870 | static void |
| 1871 | control_c (int sig) |
| 1872 | { |
| 1873 | sim_engine_set_run_state (control_c_sim_desc, sim_stopped, SIGINT); |
| 1874 | } |
| 1875 | |
| 1876 | int |
| 1877 | sim_stop (SIM_DESC sd) |
| 1878 | { |
| 1879 | /* FIXME: use a real signal value. */ |
| 1880 | sim_engine_set_run_state (sd, sim_stopped, SIGINT); |
| 1881 | return 1; |
| 1882 | } |
| 1883 | |
| 1884 | #define OBITOP(name, f, s, op) \ |
| 1885 | case O (name, SB): \ |
| 1886 | { \ |
| 1887 | int m, tmp; \ |
| 1888 | \ |
| 1889 | if (f) \ |
| 1890 | if (fetch (sd, &code->dst, &ea)) \ |
| 1891 | goto end; \ |
| 1892 | if (fetch (sd, &code->src, &tmp)) \ |
| 1893 | goto end; \ |
| 1894 | m = 1 << tmp; \ |
| 1895 | op; \ |
| 1896 | if (s) \ |
| 1897 | if (store (sd, &code->dst,ea)) \ |
| 1898 | goto end; \ |
| 1899 | goto next; \ |
| 1900 | } |
| 1901 | |
| 1902 | void |
| 1903 | sim_resume (SIM_DESC sd, int step, int siggnal) |
| 1904 | { |
| 1905 | static int init1; |
| 1906 | int cycles = 0; |
| 1907 | int insts = 0; |
| 1908 | int tick_start = get_now (); |
| 1909 | void (*prev) (); |
| 1910 | int poll_count = 0; |
| 1911 | int res; |
| 1912 | int tmp; |
| 1913 | int rd; |
| 1914 | int ea; |
| 1915 | int bit; |
| 1916 | int pc; |
| 1917 | int c, nz, v, n, u, h, ui, intMaskBit; |
| 1918 | int trace, intMask; |
| 1919 | int oldmask; |
| 1920 | enum sim_stop reason; |
| 1921 | int sigrc; |
| 1922 | |
| 1923 | init_pointers (sd); |
| 1924 | |
| 1925 | control_c_sim_desc = sd; |
| 1926 | prev = signal (SIGINT, control_c); |
| 1927 | |
| 1928 | if (step) |
| 1929 | { |
| 1930 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); |
| 1931 | } |
| 1932 | else |
| 1933 | { |
| 1934 | sim_engine_set_run_state (sd, sim_running, 0); |
| 1935 | } |
| 1936 | |
| 1937 | pc = h8_get_pc (sd); |
| 1938 | |
| 1939 | /* The PC should never be odd. */ |
| 1940 | if (pc & 0x1) |
| 1941 | { |
| 1942 | sim_engine_set_run_state (sd, sim_stopped, SIGBUS); |
| 1943 | return; |
| 1944 | } |
| 1945 | |
| 1946 | /* Get Status Register (flags). */ |
| 1947 | GETSR (sd); |
| 1948 | |
| 1949 | if (h8300smode) /* Get exr. */ |
| 1950 | { |
| 1951 | trace = (h8_get_exr (sd) >> 7) & 1; |
| 1952 | intMask = h8_get_exr (sd) & 7; |
| 1953 | } |
| 1954 | |
| 1955 | oldmask = h8_get_mask (sd); |
| 1956 | if (!h8300hmode || h8300_normal_mode) |
| 1957 | h8_set_mask (sd, 0xffff); |
| 1958 | do |
| 1959 | { |
| 1960 | unsigned short cidx; |
| 1961 | decoded_inst *code; |
| 1962 | |
| 1963 | top: |
| 1964 | cidx = h8_get_cache_idx (sd, pc); |
| 1965 | if (cidx == (unsigned short) -1 || |
| 1966 | cidx >= sd->sim_cache_size) |
| 1967 | goto illegal; |
| 1968 | |
| 1969 | code = sd->sim_cache + cidx; |
| 1970 | |
| 1971 | #if ADEBUG |
| 1972 | if (debug) |
| 1973 | { |
| 1974 | printf ("%x %d %s\n", pc, code->opcode, |
| 1975 | code->op ? code->op->name : "**"); |
| 1976 | } |
| 1977 | h8_increment_stats (sd, code->opcode); |
| 1978 | #endif |
| 1979 | |
| 1980 | if (code->opcode) |
| 1981 | { |
| 1982 | cycles += code->cycles; |
| 1983 | insts++; |
| 1984 | } |
| 1985 | |
| 1986 | switch (code->opcode) |
| 1987 | { |
| 1988 | case 0: |
| 1989 | /* |
| 1990 | * This opcode is a fake for when we get to an |
| 1991 | * instruction which hasnt been compiled |
| 1992 | */ |
| 1993 | compile (sd, pc); |
| 1994 | goto top; |
| 1995 | break; |
| 1996 | |
| 1997 | case O (O_MOVAB, SL): |
| 1998 | case O (O_MOVAW, SL): |
| 1999 | case O (O_MOVAL, SL): |
| 2000 | /* 1) Evaluate 2nd argument (dst). |
| 2001 | 2) Mask / zero extend according to whether 1st argument (src) |
| 2002 | is INDEXB, INDEXW, or INDEXL. |
| 2003 | 3) Left-shift the result by 0, 1 or 2, according to size of mova |
| 2004 | (mova/b, mova/w, mova/l). |
| 2005 | 4) Add literal value of 1st argument (src). |
| 2006 | 5) Store result in 3rd argument (op3). |
| 2007 | */ |
| 2008 | |
| 2009 | /* Alas, since this is the only instruction with 3 arguments, |
| 2010 | decode doesn't handle them very well. Some fix-up is required. |
| 2011 | |
| 2012 | a) The size of dst is determined by whether src is |
| 2013 | INDEXB or INDEXW. */ |
| 2014 | |
| 2015 | if (OP_KIND (code->src.type) == OP_INDEXB) |
| 2016 | code->dst.type = X (OP_KIND (code->dst.type), SB); |
| 2017 | else if (OP_KIND (code->src.type) == OP_INDEXW) |
| 2018 | code->dst.type = X (OP_KIND (code->dst.type), SW); |
| 2019 | |
| 2020 | /* b) If op3 == null, then this is the short form of the insn. |
| 2021 | Dst is the dispreg of src, and op3 is the 32-bit form |
| 2022 | of the same register. |
| 2023 | */ |
| 2024 | |
| 2025 | if (code->op3.type == 0) |
| 2026 | { |
| 2027 | /* Short form: src == INDEXB/INDEXW, dst == op3 == 0. |
| 2028 | We get to compose dst and op3 as follows: |
| 2029 | |
| 2030 | op3 is a 32-bit register, ID == src.reg. |
| 2031 | dst is the same register, but 8 or 16 bits |
| 2032 | depending on whether src is INDEXB or INDEXW. |
| 2033 | */ |
| 2034 | |
| 2035 | code->op3.type = X (OP_REG, SL); |
| 2036 | code->op3.reg = code->src.reg; |
| 2037 | code->op3.literal = 0; |
| 2038 | |
| 2039 | if (OP_KIND (code->src.type) == OP_INDEXB) |
| 2040 | code->dst.type = X (OP_REG, SB); |
| 2041 | else |
| 2042 | code->dst.type = X (OP_REG, SW); |
| 2043 | } |
| 2044 | |
| 2045 | if (fetch (sd, &code->dst, &ea)) |
| 2046 | goto end; |
| 2047 | |
| 2048 | switch (OP_KIND (code->src.type)) { |
| 2049 | case OP_INDEXB: ea = ea & 0xff; break; |
| 2050 | case OP_INDEXW: ea = ea & 0xffff; break; |
| 2051 | case OP_INDEXL: break; |
| 2052 | default: goto illegal; |
| 2053 | } |
| 2054 | |
| 2055 | switch (code->opcode) { |
| 2056 | case O (O_MOVAB, SL): break; |
| 2057 | case O (O_MOVAW, SL): ea = ea << 1; break; |
| 2058 | case O (O_MOVAL, SL): ea = ea << 2; break; |
| 2059 | default: goto illegal; |
| 2060 | } |
| 2061 | |
| 2062 | ea = ea + code->src.literal; |
| 2063 | |
| 2064 | if (store (sd, &code->op3, ea)) |
| 2065 | goto end; |
| 2066 | |
| 2067 | goto next; |
| 2068 | |
| 2069 | case O (O_SUBX, SB): /* subx, extended sub */ |
| 2070 | if (fetch2 (sd, &code->dst, &rd)) |
| 2071 | goto end; |
| 2072 | if (fetch (sd, &code->src, &ea)) |
| 2073 | goto end; |
| 2074 | ea = -(ea + C); |
| 2075 | res = rd + ea; |
| 2076 | goto alu8; |
| 2077 | |
| 2078 | case O (O_SUBX, SW): /* subx, extended sub */ |
| 2079 | if (fetch2 (sd, &code->dst, &rd)) |
| 2080 | goto end; |
| 2081 | if (fetch (sd, &code->src, &ea)) |
| 2082 | goto end; |
| 2083 | ea = -(ea + C); |
| 2084 | res = rd + ea; |
| 2085 | goto alu16; |
| 2086 | |
| 2087 | case O (O_SUBX, SL): /* subx, extended sub */ |
| 2088 | if (fetch2 (sd, &code->dst, &rd)) |
| 2089 | goto end; |
| 2090 | if (fetch (sd, &code->src, &ea)) |
| 2091 | goto end; |
| 2092 | ea = -(ea + C); |
| 2093 | res = rd + ea; |
| 2094 | goto alu32; |
| 2095 | |
| 2096 | case O (O_ADDX, SB): /* addx, extended add */ |
| 2097 | if (fetch2 (sd, &code->dst, &rd)) |
| 2098 | goto end; |
| 2099 | if (fetch (sd, &code->src, &ea)) |
| 2100 | goto end; |
| 2101 | ea = ea + C; |
| 2102 | res = rd + ea; |
| 2103 | goto alu8; |
| 2104 | |
| 2105 | case O (O_ADDX, SW): /* addx, extended add */ |
| 2106 | if (fetch2 (sd, &code->dst, &rd)) |
| 2107 | goto end; |
| 2108 | if (fetch (sd, &code->src, &ea)) |
| 2109 | goto end; |
| 2110 | ea = ea + C; |
| 2111 | res = rd + ea; |
| 2112 | goto alu16; |
| 2113 | |
| 2114 | case O (O_ADDX, SL): /* addx, extended add */ |
| 2115 | if (fetch2 (sd, &code->dst, &rd)) |
| 2116 | goto end; |
| 2117 | if (fetch (sd, &code->src, &ea)) |
| 2118 | goto end; |
| 2119 | ea = ea + C; |
| 2120 | res = rd + ea; |
| 2121 | goto alu32; |
| 2122 | |
| 2123 | case O (O_SUB, SB): /* sub.b */ |
| 2124 | /* Fetch rd and ea. */ |
| 2125 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2126 | goto end; |
| 2127 | ea = -ea; |
| 2128 | res = rd + ea; |
| 2129 | goto alu8; |
| 2130 | |
| 2131 | case O (O_SUB, SW): /* sub.w */ |
| 2132 | /* Fetch rd and ea. */ |
| 2133 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2134 | goto end; |
| 2135 | ea = -ea; |
| 2136 | res = rd + ea; |
| 2137 | goto alu16; |
| 2138 | |
| 2139 | case O (O_SUB, SL): /* sub.l */ |
| 2140 | /* Fetch rd and ea. */ |
| 2141 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2142 | goto end; |
| 2143 | ea = -ea; |
| 2144 | res = rd + ea; |
| 2145 | goto alu32; |
| 2146 | |
| 2147 | case O (O_NEG, SB): /* neg.b */ |
| 2148 | /* Fetch ea. */ |
| 2149 | if (fetch2 (sd, &code->src, &ea)) |
| 2150 | goto end; |
| 2151 | ea = -ea; |
| 2152 | rd = 0; |
| 2153 | res = rd + ea; |
| 2154 | goto alu8; |
| 2155 | |
| 2156 | case O (O_NEG, SW): /* neg.w */ |
| 2157 | /* Fetch ea. */ |
| 2158 | if (fetch2 (sd, &code->src, &ea)) |
| 2159 | goto end; |
| 2160 | ea = -ea; |
| 2161 | rd = 0; |
| 2162 | res = rd + ea; |
| 2163 | goto alu16; |
| 2164 | |
| 2165 | case O (O_NEG, SL): /* neg.l */ |
| 2166 | /* Fetch ea. */ |
| 2167 | if (fetch2 (sd, &code->src, &ea)) |
| 2168 | goto end; |
| 2169 | ea = -ea; |
| 2170 | rd = 0; |
| 2171 | res = rd + ea; |
| 2172 | goto alu32; |
| 2173 | |
| 2174 | case O (O_ADD, SB): /* add.b */ |
| 2175 | if (fetch2 (sd, &code->dst, &rd)) |
| 2176 | goto end; |
| 2177 | if (fetch (sd, &code->src, &ea)) |
| 2178 | goto end; |
| 2179 | res = rd + ea; |
| 2180 | goto alu8; |
| 2181 | |
| 2182 | case O (O_ADD, SW): /* add.w */ |
| 2183 | if (fetch2 (sd, &code->dst, &rd)) |
| 2184 | goto end; |
| 2185 | if (fetch (sd, &code->src, &ea)) |
| 2186 | goto end; |
| 2187 | res = rd + ea; |
| 2188 | goto alu16; |
| 2189 | |
| 2190 | case O (O_ADD, SL): /* add.l */ |
| 2191 | if (fetch2 (sd, &code->dst, &rd)) |
| 2192 | goto end; |
| 2193 | if (fetch (sd, &code->src, &ea)) |
| 2194 | goto end; |
| 2195 | res = rd + ea; |
| 2196 | goto alu32; |
| 2197 | |
| 2198 | case O (O_AND, SB): /* and.b */ |
| 2199 | /* Fetch rd and ea. */ |
| 2200 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2201 | goto end; |
| 2202 | res = rd & ea; |
| 2203 | goto log8; |
| 2204 | |
| 2205 | case O (O_AND, SW): /* and.w */ |
| 2206 | /* Fetch rd and ea. */ |
| 2207 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2208 | goto end; |
| 2209 | res = rd & ea; |
| 2210 | goto log16; |
| 2211 | |
| 2212 | case O (O_AND, SL): /* and.l */ |
| 2213 | /* Fetch rd and ea. */ |
| 2214 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2215 | goto end; |
| 2216 | res = rd & ea; |
| 2217 | goto log32; |
| 2218 | |
| 2219 | case O (O_OR, SB): /* or.b */ |
| 2220 | /* Fetch rd and ea. */ |
| 2221 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2222 | goto end; |
| 2223 | res = rd | ea; |
| 2224 | goto log8; |
| 2225 | |
| 2226 | case O (O_OR, SW): /* or.w */ |
| 2227 | /* Fetch rd and ea. */ |
| 2228 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2229 | goto end; |
| 2230 | res = rd | ea; |
| 2231 | goto log16; |
| 2232 | |
| 2233 | case O (O_OR, SL): /* or.l */ |
| 2234 | /* Fetch rd and ea. */ |
| 2235 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2236 | goto end; |
| 2237 | res = rd | ea; |
| 2238 | goto log32; |
| 2239 | |
| 2240 | case O (O_XOR, SB): /* xor.b */ |
| 2241 | /* Fetch rd and ea. */ |
| 2242 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2243 | goto end; |
| 2244 | res = rd ^ ea; |
| 2245 | goto log8; |
| 2246 | |
| 2247 | case O (O_XOR, SW): /* xor.w */ |
| 2248 | /* Fetch rd and ea. */ |
| 2249 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2250 | goto end; |
| 2251 | res = rd ^ ea; |
| 2252 | goto log16; |
| 2253 | |
| 2254 | case O (O_XOR, SL): /* xor.l */ |
| 2255 | /* Fetch rd and ea. */ |
| 2256 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) |
| 2257 | goto end; |
| 2258 | res = rd ^ ea; |
| 2259 | goto log32; |
| 2260 | |
| 2261 | case O (O_MOV, SB): |
| 2262 | if (fetch (sd, &code->src, &res)) |
| 2263 | goto end; |
| 2264 | if (store (sd, &code->dst, res)) |
| 2265 | goto end; |
| 2266 | goto just_flags_log8; |
| 2267 | case O (O_MOV, SW): |
| 2268 | if (fetch (sd, &code->src, &res)) |
| 2269 | goto end; |
| 2270 | if (store (sd, &code->dst, res)) |
| 2271 | goto end; |
| 2272 | goto just_flags_log16; |
| 2273 | case O (O_MOV, SL): |
| 2274 | if (fetch (sd, &code->src, &res)) |
| 2275 | goto end; |
| 2276 | if (store (sd, &code->dst, res)) |
| 2277 | goto end; |
| 2278 | goto just_flags_log32; |
| 2279 | |
| 2280 | case O (O_MOVMD, SB): /* movmd.b */ |
| 2281 | ea = GET_W_REG (4); |
| 2282 | if (ea == 0) |
| 2283 | ea = 0x10000; |
| 2284 | |
| 2285 | while (ea--) |
| 2286 | { |
| 2287 | rd = GET_MEMORY_B (GET_L_REG (5)); |
| 2288 | SET_MEMORY_B (GET_L_REG (6), rd); |
| 2289 | SET_L_REG (5, GET_L_REG (5) + 1); |
| 2290 | SET_L_REG (6, GET_L_REG (6) + 1); |
| 2291 | SET_W_REG (4, ea); |
| 2292 | } |
| 2293 | goto next; |
| 2294 | |
| 2295 | case O (O_MOVMD, SW): /* movmd.w */ |
| 2296 | ea = GET_W_REG (4); |
| 2297 | if (ea == 0) |
| 2298 | ea = 0x10000; |
| 2299 | |
| 2300 | while (ea--) |
| 2301 | { |
| 2302 | rd = GET_MEMORY_W (GET_L_REG (5)); |
| 2303 | SET_MEMORY_W (GET_L_REG (6), rd); |
| 2304 | SET_L_REG (5, GET_L_REG (5) + 2); |
| 2305 | SET_L_REG (6, GET_L_REG (6) + 2); |
| 2306 | SET_W_REG (4, ea); |
| 2307 | } |
| 2308 | goto next; |
| 2309 | |
| 2310 | case O (O_MOVMD, SL): /* movmd.l */ |
| 2311 | ea = GET_W_REG (4); |
| 2312 | if (ea == 0) |
| 2313 | ea = 0x10000; |
| 2314 | |
| 2315 | while (ea--) |
| 2316 | { |
| 2317 | rd = GET_MEMORY_L (GET_L_REG (5)); |
| 2318 | SET_MEMORY_L (GET_L_REG (6), rd); |
| 2319 | SET_L_REG (5, GET_L_REG (5) + 4); |
| 2320 | SET_L_REG (6, GET_L_REG (6) + 4); |
| 2321 | SET_W_REG (4, ea); |
| 2322 | } |
| 2323 | goto next; |
| 2324 | |
| 2325 | case O (O_MOVSD, SB): /* movsd.b */ |
| 2326 | /* This instruction implements strncpy, with a conditional branch. |
| 2327 | r4 contains n, r5 contains src, and r6 contains dst. |
| 2328 | The 16-bit displacement operand is added to the pc |
| 2329 | if and only if the end of string is reached before |
| 2330 | n bytes are transferred. */ |
| 2331 | |
| 2332 | ea = GET_L_REG (4) & 0xffff; |
| 2333 | if (ea == 0) |
| 2334 | ea = 0x10000; |
| 2335 | |
| 2336 | while (ea--) |
| 2337 | { |
| 2338 | rd = GET_MEMORY_B (GET_L_REG (5)); |
| 2339 | SET_MEMORY_B (GET_L_REG (6), rd); |
| 2340 | SET_L_REG (5, GET_L_REG (5) + 1); |
| 2341 | SET_L_REG (6, GET_L_REG (6) + 1); |
| 2342 | SET_W_REG (4, ea); |
| 2343 | if (rd == 0) |
| 2344 | goto condtrue; |
| 2345 | } |
| 2346 | goto next; |
| 2347 | |
| 2348 | case O (O_EEPMOV, SB): /* eepmov.b */ |
| 2349 | case O (O_EEPMOV, SW): /* eepmov.w */ |
| 2350 | if (h8300hmode || h8300smode) |
| 2351 | { |
| 2352 | register unsigned char *_src, *_dst; |
| 2353 | unsigned int count = ((code->opcode == O (O_EEPMOV, SW)) |
| 2354 | ? h8_get_reg (sd, R4_REGNUM) & 0xffff |
| 2355 | : h8_get_reg (sd, R4_REGNUM) & 0xff); |
| 2356 | |
| 2357 | _src = (h8_get_reg (sd, R5_REGNUM) < memory_size |
| 2358 | ? h8_get_memory_buf (sd) + h8_get_reg (sd, R5_REGNUM) |
| 2359 | : h8_get_eightbit_buf (sd) + |
| 2360 | (h8_get_reg (sd, R5_REGNUM) & 0xff)); |
| 2361 | if ((_src + count) >= (h8_get_memory_buf (sd) + memory_size)) |
| 2362 | { |
| 2363 | if ((_src + count) >= (h8_get_eightbit_buf (sd) + 0x100)) |
| 2364 | goto illegal; |
| 2365 | } |
| 2366 | _dst = (h8_get_reg (sd, R6_REGNUM) < memory_size |
| 2367 | ? h8_get_memory_buf (sd) + h8_get_reg (sd, R6_REGNUM) |
| 2368 | : h8_get_eightbit_buf (sd) + |
| 2369 | (h8_get_reg (sd, R6_REGNUM) & 0xff)); |
| 2370 | |
| 2371 | if ((_dst + count) >= (h8_get_memory_buf (sd) + memory_size)) |
| 2372 | { |
| 2373 | if ((_dst + count) >= (h8_get_eightbit_buf (sd) + 0x100)) |
| 2374 | goto illegal; |
| 2375 | } |
| 2376 | memcpy (_dst, _src, count); |
| 2377 | |
| 2378 | h8_set_reg (sd, R5_REGNUM, h8_get_reg (sd, R5_REGNUM) + count); |
| 2379 | h8_set_reg (sd, R6_REGNUM, h8_get_reg (sd, R6_REGNUM) + count); |
| 2380 | h8_set_reg (sd, R4_REGNUM, h8_get_reg (sd, R4_REGNUM) & |
| 2381 | ((code->opcode == O (O_EEPMOV, SW)) |
| 2382 | ? (~0xffff) : (~0xff))); |
| 2383 | cycles += 2 * count; |
| 2384 | goto next; |
| 2385 | } |
| 2386 | goto illegal; |
| 2387 | |
| 2388 | case O (O_ADDS, SL): /* adds (.l) */ |
| 2389 | /* FIXME fetch. |
| 2390 | * This insn only uses register operands, but still |
| 2391 | * it would be cleaner to use fetch and store... */ |
| 2392 | SET_L_REG (code->dst.reg, |
| 2393 | GET_L_REG (code->dst.reg) |
| 2394 | + code->src.literal); |
| 2395 | |
| 2396 | goto next; |
| 2397 | |
| 2398 | case O (O_SUBS, SL): /* subs (.l) */ |
| 2399 | /* FIXME fetch. |
| 2400 | * This insn only uses register operands, but still |
| 2401 | * it would be cleaner to use fetch and store... */ |
| 2402 | SET_L_REG (code->dst.reg, |
| 2403 | GET_L_REG (code->dst.reg) |
| 2404 | - code->src.literal); |
| 2405 | goto next; |
| 2406 | |
| 2407 | case O (O_CMP, SB): /* cmp.b */ |
| 2408 | if (fetch (sd, &code->dst, &rd)) |
| 2409 | goto end; |
| 2410 | if (fetch (sd, &code->src, &ea)) |
| 2411 | goto end; |
| 2412 | ea = -ea; |
| 2413 | res = rd + ea; |
| 2414 | goto just_flags_alu8; |
| 2415 | |
| 2416 | case O (O_CMP, SW): /* cmp.w */ |
| 2417 | if (fetch (sd, &code->dst, &rd)) |
| 2418 | goto end; |
| 2419 | if (fetch (sd, &code->src, &ea)) |
| 2420 | goto end; |
| 2421 | ea = -ea; |
| 2422 | res = rd + ea; |
| 2423 | goto just_flags_alu16; |
| 2424 | |
| 2425 | case O (O_CMP, SL): /* cmp.l */ |
| 2426 | if (fetch (sd, &code->dst, &rd)) |
| 2427 | goto end; |
| 2428 | if (fetch (sd, &code->src, &ea)) |
| 2429 | goto end; |
| 2430 | ea = -ea; |
| 2431 | res = rd + ea; |
| 2432 | goto just_flags_alu32; |
| 2433 | |
| 2434 | case O (O_DEC, SB): /* dec.b */ |
| 2435 | /* FIXME fetch. |
| 2436 | * This insn only uses register operands, but still |
| 2437 | * it would be cleaner to use fetch and store... */ |
| 2438 | rd = GET_B_REG (code->src.reg); |
| 2439 | ea = -1; |
| 2440 | res = rd + ea; |
| 2441 | SET_B_REG (code->src.reg, res); |
| 2442 | goto just_flags_inc8; |
| 2443 | |
| 2444 | case O (O_DEC, SW): /* dec.w */ |
| 2445 | /* FIXME fetch. |
| 2446 | * This insn only uses register operands, but still |
| 2447 | * it would be cleaner to use fetch and store... */ |
| 2448 | rd = GET_W_REG (code->dst.reg); |
| 2449 | ea = -code->src.literal; |
| 2450 | res = rd + ea; |
| 2451 | SET_W_REG (code->dst.reg, res); |
| 2452 | goto just_flags_inc16; |
| 2453 | |
| 2454 | case O (O_DEC, SL): /* dec.l */ |
| 2455 | /* FIXME fetch. |
| 2456 | * This insn only uses register operands, but still |
| 2457 | * it would be cleaner to use fetch and store... */ |
| 2458 | rd = GET_L_REG (code->dst.reg); |
| 2459 | ea = -code->src.literal; |
| 2460 | res = rd + ea; |
| 2461 | SET_L_REG (code->dst.reg, res); |
| 2462 | goto just_flags_inc32; |
| 2463 | |
| 2464 | case O (O_INC, SB): /* inc.b */ |
| 2465 | /* FIXME fetch. |
| 2466 | * This insn only uses register operands, but still |
| 2467 | * it would be cleaner to use fetch and store... */ |
| 2468 | rd = GET_B_REG (code->src.reg); |
| 2469 | ea = 1; |
| 2470 | res = rd + ea; |
| 2471 | SET_B_REG (code->src.reg, res); |
| 2472 | goto just_flags_inc8; |
| 2473 | |
| 2474 | case O (O_INC, SW): /* inc.w */ |
| 2475 | /* FIXME fetch. |
| 2476 | * This insn only uses register operands, but still |
| 2477 | * it would be cleaner to use fetch and store... */ |
| 2478 | rd = GET_W_REG (code->dst.reg); |
| 2479 | ea = code->src.literal; |
| 2480 | res = rd + ea; |
| 2481 | SET_W_REG (code->dst.reg, res); |
| 2482 | goto just_flags_inc16; |
| 2483 | |
| 2484 | case O (O_INC, SL): /* inc.l */ |
| 2485 | /* FIXME fetch. |
| 2486 | * This insn only uses register operands, but still |
| 2487 | * it would be cleaner to use fetch and store... */ |
| 2488 | rd = GET_L_REG (code->dst.reg); |
| 2489 | ea = code->src.literal; |
| 2490 | res = rd + ea; |
| 2491 | SET_L_REG (code->dst.reg, res); |
| 2492 | goto just_flags_inc32; |
| 2493 | |
| 2494 | case O (O_LDC, SB): /* ldc.b */ |
| 2495 | if (fetch (sd, &code->src, &res)) |
| 2496 | goto end; |
| 2497 | goto setc; |
| 2498 | |
| 2499 | case O (O_LDC, SW): /* ldc.w */ |
| 2500 | if (fetch (sd, &code->src, &res)) |
| 2501 | goto end; |
| 2502 | |
| 2503 | /* Word operand, value from MSB, must be shifted. */ |
| 2504 | res >>= 8; |
| 2505 | goto setc; |
| 2506 | |
| 2507 | case O (O_LDC, SL): /* ldc.l */ |
| 2508 | if (fetch (sd, &code->src, &res)) |
| 2509 | goto end; |
| 2510 | switch (code->dst.type) { |
| 2511 | case X (OP_SBR, SL): |
| 2512 | h8_set_sbr (sd, res); |
| 2513 | break; |
| 2514 | case X (OP_VBR, SL): |
| 2515 | h8_set_vbr (sd, res); |
| 2516 | break; |
| 2517 | default: |
| 2518 | goto illegal; |
| 2519 | } |
| 2520 | goto next; |
| 2521 | |
| 2522 | case O (O_STC, SW): /* stc.w */ |
| 2523 | case O (O_STC, SB): /* stc.b */ |
| 2524 | if (code->src.type == X (OP_CCR, SB)) |
| 2525 | { |
| 2526 | BUILDSR (sd); |
| 2527 | res = h8_get_ccr (sd); |
| 2528 | } |
| 2529 | else if (code->src.type == X (OP_EXR, SB) && h8300smode) |
| 2530 | { |
| 2531 | if (h8300smode) |
| 2532 | h8_set_exr (sd, (trace << 7) | intMask); |
| 2533 | res = h8_get_exr (sd); |
| 2534 | } |
| 2535 | else |
| 2536 | goto illegal; |
| 2537 | |
| 2538 | /* Word operand, value to MSB, must be shifted. */ |
| 2539 | if (code->opcode == X (O_STC, SW)) |
| 2540 | res <<= 8; |
| 2541 | if (store (sd, &code->dst, res)) |
| 2542 | goto end; |
| 2543 | goto next; |
| 2544 | case O (O_STC, SL): /* stc.l */ |
| 2545 | switch (code->src.type) { |
| 2546 | case X (OP_SBR, SL): |
| 2547 | res = h8_get_sbr (sd); |
| 2548 | break; |
| 2549 | case X (OP_VBR, SL): |
| 2550 | res = h8_get_vbr (sd); |
| 2551 | break; |
| 2552 | default: |
| 2553 | goto illegal; |
| 2554 | } |
| 2555 | if (store (sd, &code->dst, res)) |
| 2556 | goto end; |
| 2557 | goto next; |
| 2558 | |
| 2559 | case O (O_ANDC, SB): /* andc.b */ |
| 2560 | if (code->dst.type == X (OP_CCR, SB)) |
| 2561 | { |
| 2562 | BUILDSR (sd); |
| 2563 | rd = h8_get_ccr (sd); |
| 2564 | } |
| 2565 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) |
| 2566 | { |
| 2567 | if (h8300smode) |
| 2568 | h8_set_exr (sd, (trace << 7) | intMask); |
| 2569 | res = h8_get_exr (sd); |
| 2570 | } |
| 2571 | else |
| 2572 | goto illegal; |
| 2573 | ea = code->src.literal; |
| 2574 | res = rd & ea; |
| 2575 | goto setc; |
| 2576 | |
| 2577 | case O (O_ORC, SB): /* orc.b */ |
| 2578 | if (code->dst.type == X (OP_CCR, SB)) |
| 2579 | { |
| 2580 | BUILDSR (sd); |
| 2581 | rd = h8_get_ccr (sd); |
| 2582 | } |
| 2583 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) |
| 2584 | { |
| 2585 | if (h8300smode) |
| 2586 | h8_set_exr (sd, (trace << 7) | intMask); |
| 2587 | rd = h8_get_exr (sd); |
| 2588 | } |
| 2589 | else |
| 2590 | goto illegal; |
| 2591 | ea = code->src.literal; |
| 2592 | res = rd | ea; |
| 2593 | goto setc; |
| 2594 | |
| 2595 | case O (O_XORC, SB): /* xorc.b */ |
| 2596 | if (code->dst.type == X (OP_CCR, SB)) |
| 2597 | { |
| 2598 | BUILDSR (sd); |
| 2599 | rd = h8_get_ccr (sd); |
| 2600 | } |
| 2601 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) |
| 2602 | { |
| 2603 | if (h8300smode) |
| 2604 | h8_set_exr (sd, (trace << 7) | intMask); |
| 2605 | rd = h8_get_exr (sd); |
| 2606 | } |
| 2607 | else |
| 2608 | goto illegal; |
| 2609 | ea = code->src.literal; |
| 2610 | res = rd ^ ea; |
| 2611 | goto setc; |
| 2612 | |
| 2613 | case O (O_BRAS, SB): /* bra/s */ |
| 2614 | /* This is basically an ordinary branch, with a delay slot. */ |
| 2615 | if (fetch (sd, &code->src, &res)) |
| 2616 | goto end; |
| 2617 | |
| 2618 | if ((res & 1) == 0) |
| 2619 | goto illegal; |
| 2620 | |
| 2621 | res -= 1; |
| 2622 | |
| 2623 | /* Execution continues at next instruction, but |
| 2624 | delayed_branch is set up for next cycle. */ |
| 2625 | h8_set_delayed_branch (sd, code->next_pc + res); |
| 2626 | pc = code->next_pc; |
| 2627 | goto end; |
| 2628 | |
| 2629 | case O (O_BRAB, SB): /* bra rd.b */ |
| 2630 | case O (O_BRAW, SW): /* bra rd.w */ |
| 2631 | case O (O_BRAL, SL): /* bra erd.l */ |
| 2632 | if (fetch (sd, &code->src, &rd)) |
| 2633 | goto end; |
| 2634 | switch (OP_SIZE (code->opcode)) { |
| 2635 | case SB: rd &= 0xff; break; |
| 2636 | case SW: rd &= 0xffff; break; |
| 2637 | case SL: rd &= 0xffffffff; break; |
| 2638 | } |
| 2639 | pc = code->next_pc + rd; |
| 2640 | goto end; |
| 2641 | |
| 2642 | case O (O_BRABC, SB): /* bra/bc, branch if bit clear */ |
| 2643 | case O (O_BRABS, SB): /* bra/bs, branch if bit set */ |
| 2644 | case O (O_BSRBC, SB): /* bsr/bc, call if bit clear */ |
| 2645 | case O (O_BSRBS, SB): /* bsr/bs, call if bit set */ |
| 2646 | if (fetch (sd, &code->dst, &rd) || |
| 2647 | fetch (sd, &code->src, &bit)) |
| 2648 | goto end; |
| 2649 | |
| 2650 | if (code->opcode == O (O_BRABC, SB) || /* branch if clear */ |
| 2651 | code->opcode == O (O_BSRBC, SB)) /* call if clear */ |
| 2652 | { |
| 2653 | if ((rd & (1 << bit))) /* no branch */ |
| 2654 | goto next; |
| 2655 | } |
| 2656 | else /* branch/call if set */ |
| 2657 | { |
| 2658 | if (!(rd & (1 << bit))) /* no branch */ |
| 2659 | goto next; |
| 2660 | } |
| 2661 | |
| 2662 | if (fetch (sd, &code->op3, &res)) /* branch */ |
| 2663 | goto end; |
| 2664 | pc = code->next_pc + res; |
| 2665 | |
| 2666 | if (code->opcode == O (O_BRABC, SB) || |
| 2667 | code->opcode == O (O_BRABS, SB)) /* branch */ |
| 2668 | goto end; |
| 2669 | else /* call */ |
| 2670 | goto call; |
| 2671 | |
| 2672 | case O (O_BRA, SN): |
| 2673 | case O (O_BRA, SL): |
| 2674 | case O (O_BRA, SW): |
| 2675 | case O (O_BRA, SB): /* bra, branch always */ |
| 2676 | if (1) |
| 2677 | goto condtrue; |
| 2678 | goto next; |
| 2679 | |
| 2680 | case O (O_BRN, SB): /* brn, ;-/ branch never? */ |
| 2681 | if (0) |
| 2682 | goto condtrue; |
| 2683 | goto next; |
| 2684 | |
| 2685 | case O (O_BHI, SB): /* bhi */ |
| 2686 | if ((C || Z) == 0) |
| 2687 | goto condtrue; |
| 2688 | goto next; |
| 2689 | |
| 2690 | |
| 2691 | case O (O_BLS, SB): /* bls */ |
| 2692 | if ((C || Z)) |
| 2693 | goto condtrue; |
| 2694 | goto next; |
| 2695 | |
| 2696 | case O (O_BCS, SB): /* bcs, branch if carry set */ |
| 2697 | if ((C == 1)) |
| 2698 | goto condtrue; |
| 2699 | goto next; |
| 2700 | |
| 2701 | case O (O_BCC, SB): /* bcc, branch if carry clear */ |
| 2702 | if ((C == 0)) |
| 2703 | goto condtrue; |
| 2704 | goto next; |
| 2705 | |
| 2706 | case O (O_BEQ, SB): /* beq, branch if zero set */ |
| 2707 | if (Z) |
| 2708 | goto condtrue; |
| 2709 | goto next; |
| 2710 | case O (O_BGT, SB): /* bgt */ |
| 2711 | if (((Z || (N ^ V)) == 0)) |
| 2712 | goto condtrue; |
| 2713 | goto next; |
| 2714 | |
| 2715 | case O (O_BLE, SB): /* ble */ |
| 2716 | if (((Z || (N ^ V)) == 1)) |
| 2717 | goto condtrue; |
| 2718 | goto next; |
| 2719 | |
| 2720 | case O (O_BGE, SB): /* bge */ |
| 2721 | if ((N ^ V) == 0) |
| 2722 | goto condtrue; |
| 2723 | goto next; |
| 2724 | case O (O_BLT, SB): /* blt */ |
| 2725 | if ((N ^ V)) |
| 2726 | goto condtrue; |
| 2727 | goto next; |
| 2728 | case O (O_BMI, SB): /* bmi */ |
| 2729 | if ((N)) |
| 2730 | goto condtrue; |
| 2731 | goto next; |
| 2732 | case O (O_BNE, SB): /* bne, branch if zero clear */ |
| 2733 | if ((Z == 0)) |
| 2734 | goto condtrue; |
| 2735 | goto next; |
| 2736 | |
| 2737 | case O (O_BPL, SB): /* bpl */ |
| 2738 | if (N == 0) |
| 2739 | goto condtrue; |
| 2740 | goto next; |
| 2741 | case O (O_BVC, SB): /* bvc */ |
| 2742 | if ((V == 0)) |
| 2743 | goto condtrue; |
| 2744 | goto next; |
| 2745 | case O (O_BVS, SB): /* bvs */ |
| 2746 | if ((V == 1)) |
| 2747 | goto condtrue; |
| 2748 | goto next; |
| 2749 | |
| 2750 | /* Trap for Command Line setup. */ |
| 2751 | case O (O_SYS_CMDLINE, SB): |
| 2752 | { |
| 2753 | int i = 0; /* Loop counter. */ |
| 2754 | int j = 0; /* Loop counter. */ |
| 2755 | int ind_arg_len = 0; /* Length of each argument. */ |
| 2756 | int no_of_args = 0; /* The no. or cmdline args. */ |
| 2757 | int current_location = 0; /* Location of string. */ |
| 2758 | int old_sp = 0; /* The Initial Stack Pointer. */ |
| 2759 | int no_of_slots = 0; /* No. of slots required on the stack |
| 2760 | for storing cmdline args. */ |
| 2761 | int sp_move = 0; /* No. of locations by which the stack needs |
| 2762 | to grow. */ |
| 2763 | int new_sp = 0; /* The final stack pointer location passed |
| 2764 | back. */ |
| 2765 | int *argv_ptrs; /* Pointers of argv strings to be stored. */ |
| 2766 | int argv_ptrs_location = 0; /* Location of pointers to cmdline |
| 2767 | args on the stack. */ |
| 2768 | int char_ptr_size = 0; /* Size of a character pointer on |
| 2769 | target machine. */ |
| 2770 | int addr_cmdline = 0; /* Memory location where cmdline has |
| 2771 | to be stored. */ |
| 2772 | int size_cmdline = 0; /* Size of cmdline. */ |
| 2773 | |
| 2774 | /* Set the address of 256 free locations where command line is |
| 2775 | stored. */ |
| 2776 | addr_cmdline = cmdline_location(); |
| 2777 | h8_set_reg (sd, 0, addr_cmdline); |
| 2778 | |
| 2779 | /* Counting the no. of commandline arguments. */ |
| 2780 | for (i = 0; h8_get_cmdline_arg (sd, i) != NULL; i++) |
| 2781 | continue; |
| 2782 | |
| 2783 | /* No. of arguments in the command line. */ |
| 2784 | no_of_args = i; |
| 2785 | |
| 2786 | /* Current location is just a temporary variable,which we are |
| 2787 | setting to the point to the start of our commandline string. */ |
| 2788 | current_location = addr_cmdline; |
| 2789 | |
| 2790 | /* Allocating space for storing pointers of the command line |
| 2791 | arguments. */ |
| 2792 | argv_ptrs = (int *) malloc (sizeof (int) * no_of_args); |
| 2793 | |
| 2794 | /* Setting char_ptr_size to the sizeof (char *) on the different |
| 2795 | architectures. */ |
| 2796 | if ((h8300hmode || h8300smode) && !h8300_normal_mode) |
| 2797 | { |
| 2798 | char_ptr_size = 4; |
| 2799 | } |
| 2800 | else |
| 2801 | { |
| 2802 | char_ptr_size = 2; |
| 2803 | } |
| 2804 | |
| 2805 | for (i = 0; i < no_of_args; i++) |
| 2806 | { |
| 2807 | ind_arg_len = 0; |
| 2808 | |
| 2809 | /* The size of the commandline argument. */ |
| 2810 | ind_arg_len = strlen (h8_get_cmdline_arg (sd, i) + 1); |
| 2811 | |
| 2812 | /* The total size of the command line string. */ |
| 2813 | size_cmdline += ind_arg_len; |
| 2814 | |
| 2815 | /* As we have only 256 bytes, we need to provide a graceful |
| 2816 | exit. Anyways, a program using command line arguments |
| 2817 | where we cannot store all the command line arguments |
| 2818 | given may behave unpredictably. */ |
| 2819 | if (size_cmdline >= 256) |
| 2820 | { |
| 2821 | h8_set_reg (sd, 0, 0); |
| 2822 | goto next; |
| 2823 | } |
| 2824 | else |
| 2825 | { |
| 2826 | /* current_location points to the memory where the next |
| 2827 | commandline argument is stored. */ |
| 2828 | argv_ptrs[i] = current_location; |
| 2829 | for (j = 0; j < ind_arg_len; j++) |
| 2830 | { |
| 2831 | SET_MEMORY_B ((current_location + |
| 2832 | (sizeof (char) * j)), |
| 2833 | *(h8_get_cmdline_arg (sd, i) + |
| 2834 | sizeof (char) * j)); |
| 2835 | } |
| 2836 | |
| 2837 | /* Setting current_location to the starting of next |
| 2838 | argument. */ |
| 2839 | current_location += ind_arg_len; |
| 2840 | } |
| 2841 | } |
| 2842 | |
| 2843 | /* This is the original position of the stack pointer. */ |
| 2844 | old_sp = h8_get_reg (sd, SP_REGNUM); |
| 2845 | |
| 2846 | /* We need space from the stack to store the pointers to argvs. */ |
| 2847 | /* As we will infringe on the stack, we need to shift the stack |
| 2848 | pointer so that the data is not overwritten. We calculate how |
| 2849 | much space is required. */ |
| 2850 | sp_move = (no_of_args) * (char_ptr_size); |
| 2851 | |
| 2852 | /* The final position of stack pointer, we have thus taken some |
| 2853 | space from the stack. */ |
| 2854 | new_sp = old_sp - sp_move; |
| 2855 | |
| 2856 | /* Temporary variable holding value where the argv pointers need |
| 2857 | to be stored. */ |
| 2858 | argv_ptrs_location = new_sp; |
| 2859 | |
| 2860 | /* The argv pointers are stored at sequential locations. As per |
| 2861 | the H8300 ABI. */ |
| 2862 | for (i = 0; i < no_of_args; i++) |
| 2863 | { |
| 2864 | /* Saving the argv pointer. */ |
| 2865 | if ((h8300hmode || h8300smode) && !h8300_normal_mode) |
| 2866 | { |
| 2867 | SET_MEMORY_L (argv_ptrs_location, argv_ptrs[i]); |
| 2868 | } |
| 2869 | else |
| 2870 | { |
| 2871 | SET_MEMORY_W (argv_ptrs_location, argv_ptrs[i]); |
| 2872 | } |
| 2873 | |
| 2874 | /* The next location where the pointer to the next argv |
| 2875 | string has to be stored. */ |
| 2876 | argv_ptrs_location += char_ptr_size; |
| 2877 | } |
| 2878 | |
| 2879 | /* Required by POSIX, Setting 0x0 at the end of the list of argv |
| 2880 | pointers. */ |
| 2881 | if ((h8300hmode || h8300smode) && !h8300_normal_mode) |
| 2882 | { |
| 2883 | SET_MEMORY_L (old_sp, 0x0); |
| 2884 | } |
| 2885 | else |
| 2886 | { |
| 2887 | SET_MEMORY_W (old_sp, 0x0); |
| 2888 | } |
| 2889 | |
| 2890 | /* Freeing allocated memory. */ |
| 2891 | free (argv_ptrs); |
| 2892 | for (i = 0; i <= no_of_args; i++) |
| 2893 | { |
| 2894 | free (h8_get_cmdline_arg (sd, i)); |
| 2895 | } |
| 2896 | free (h8_get_command_line (sd)); |
| 2897 | |
| 2898 | /* The no. of argv arguments are returned in Reg 0. */ |
| 2899 | h8_set_reg (sd, 0, no_of_args); |
| 2900 | /* The Pointer to argv in Register 1. */ |
| 2901 | h8_set_reg (sd, 1, new_sp); |
| 2902 | /* Setting the stack pointer to the new value. */ |
| 2903 | h8_set_reg (sd, SP_REGNUM, new_sp); |
| 2904 | } |
| 2905 | goto next; |
| 2906 | |
| 2907 | /* System call processing starts. */ |
| 2908 | case O (O_SYS_OPEN, SB): |
| 2909 | { |
| 2910 | int len = 0; /* Length of filename. */ |
| 2911 | char *filename; /* Filename would go here. */ |
| 2912 | char temp_char; /* Temporary character */ |
| 2913 | int mode = 0; /* Mode bits for the file. */ |
| 2914 | int open_return; /* Return value of open, file descriptor. */ |
| 2915 | int i; /* Loop counter */ |
| 2916 | int filename_ptr; /* Pointer to filename in cpu memory. */ |
| 2917 | |
| 2918 | /* Setting filename_ptr to first argument of open, */ |
| 2919 | /* and trying to get mode. */ |
| 2920 | if ((h8300sxmode || h8300hmode || h8300smode) && !h8300_normal_mode) |
| 2921 | { |
| 2922 | filename_ptr = GET_L_REG (0); |
| 2923 | mode = GET_MEMORY_L (h8_get_reg (sd, SP_REGNUM) + 4); |
| 2924 | } |
| 2925 | else |
| 2926 | { |
| 2927 | filename_ptr = GET_W_REG (0); |
| 2928 | mode = GET_MEMORY_W (h8_get_reg (sd, SP_REGNUM) + 2); |
| 2929 | } |
| 2930 | |
| 2931 | /* Trying to find the length of the filename. */ |
| 2932 | temp_char = GET_MEMORY_B (h8_get_reg (sd, 0)); |
| 2933 | |
| 2934 | len = 1; |
| 2935 | while (temp_char != '\0') |
| 2936 | { |
| 2937 | temp_char = GET_MEMORY_B (filename_ptr + len); |
| 2938 | len++; |
| 2939 | } |
| 2940 | |
| 2941 | /* Allocating space for the filename. */ |
| 2942 | filename = (char *) malloc (sizeof (char) * len); |
| 2943 | |
| 2944 | /* String copying the filename from memory. */ |
| 2945 | for (i = 0; i < len; i++) |
| 2946 | { |
| 2947 | temp_char = GET_MEMORY_B (filename_ptr + i); |
| 2948 | filename[i] = temp_char; |
| 2949 | } |
| 2950 | |
| 2951 | /* Callback to open and return the file descriptor. */ |
| 2952 | open_return = sim_callback->open (sim_callback, filename, mode); |
| 2953 | |
| 2954 | /* Return value in register 0. */ |
| 2955 | h8_set_reg (sd, 0, open_return); |
| 2956 | |
| 2957 | /* Freeing memory used for filename. */ |
| 2958 | free (filename); |
| 2959 | } |
| 2960 | goto next; |
| 2961 | |
| 2962 | case O (O_SYS_READ, SB): |
| 2963 | { |
| 2964 | char *char_ptr; /* Where characters read would be stored. */ |
| 2965 | int fd; /* File descriptor */ |
| 2966 | int buf_size; /* BUF_SIZE parameter in read. */ |
| 2967 | int i = 0; /* Temporary Loop counter */ |
| 2968 | int read_return = 0; /* Return value from callback to |
| 2969 | read. */ |
| 2970 | |
| 2971 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
| 2972 | buf_size = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2); |
| 2973 | |
| 2974 | char_ptr = (char *) malloc (sizeof (char) * buf_size); |
| 2975 | |
| 2976 | /* Callback to read and return the no. of characters read. */ |
| 2977 | read_return = |
| 2978 | sim_callback->read (sim_callback, fd, char_ptr, buf_size); |
| 2979 | |
| 2980 | /* The characters read are stored in cpu memory. */ |
| 2981 | for (i = 0; i < buf_size; i++) |
| 2982 | { |
| 2983 | SET_MEMORY_B ((h8_get_reg (sd, 1) + (sizeof (char) * i)), |
| 2984 | *(char_ptr + (sizeof (char) * i))); |
| 2985 | } |
| 2986 | |
| 2987 | /* Return value in Register 0. */ |
| 2988 | h8_set_reg (sd, 0, read_return); |
| 2989 | |
| 2990 | /* Freeing memory used as buffer. */ |
| 2991 | free (char_ptr); |
| 2992 | } |
| 2993 | goto next; |
| 2994 | |
| 2995 | case O (O_SYS_WRITE, SB): |
| 2996 | { |
| 2997 | int fd; /* File descriptor */ |
| 2998 | char temp_char; /* Temporary character */ |
| 2999 | int len; /* Length of write, Parameter II to write. */ |
| 3000 | int char_ptr; /* Character Pointer, Parameter I of write. */ |
| 3001 | char *ptr; /* Where characters to be written are stored. |
| 3002 | */ |
| 3003 | int write_return; /* Return value from callback to write. */ |
| 3004 | int i = 0; /* Loop counter */ |
| 3005 | |
| 3006 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
| 3007 | char_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); |
| 3008 | len = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2); |
| 3009 | |
| 3010 | /* Allocating space for the characters to be written. */ |
| 3011 | ptr = (char *) malloc (sizeof (char) * len); |
| 3012 | |
| 3013 | /* Fetching the characters from cpu memory. */ |
| 3014 | for (i = 0; i < len; i++) |
| 3015 | { |
| 3016 | temp_char = GET_MEMORY_B (char_ptr + i); |
| 3017 | ptr[i] = temp_char; |
| 3018 | } |
| 3019 | |
| 3020 | /* Callback write and return the no. of characters written. */ |
| 3021 | write_return = sim_callback->write (sim_callback, fd, ptr, len); |
| 3022 | |
| 3023 | /* Return value in Register 0. */ |
| 3024 | h8_set_reg (sd, 0, write_return); |
| 3025 | |
| 3026 | /* Freeing memory used as buffer. */ |
| 3027 | free (ptr); |
| 3028 | } |
| 3029 | goto next; |
| 3030 | |
| 3031 | case O (O_SYS_LSEEK, SB): |
| 3032 | { |
| 3033 | int fd; /* File descriptor */ |
| 3034 | int offset; /* Offset */ |
| 3035 | int origin; /* Origin */ |
| 3036 | int lseek_return; /* Return value from callback to lseek. */ |
| 3037 | |
| 3038 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
| 3039 | offset = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); |
| 3040 | origin = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2); |
| 3041 | |
| 3042 | /* Callback lseek and return offset. */ |
| 3043 | lseek_return = |
| 3044 | sim_callback->lseek (sim_callback, fd, offset, origin); |
| 3045 | |
| 3046 | /* Return value in register 0. */ |
| 3047 | h8_set_reg (sd, 0, lseek_return); |
| 3048 | } |
| 3049 | goto next; |
| 3050 | |
| 3051 | case O (O_SYS_CLOSE, SB): |
| 3052 | { |
| 3053 | int fd; /* File descriptor */ |
| 3054 | int close_return; /* Return value from callback to close. */ |
| 3055 | |
| 3056 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
| 3057 | |
| 3058 | /* Callback close and return. */ |
| 3059 | close_return = sim_callback->close (sim_callback, fd); |
| 3060 | |
| 3061 | /* Return value in register 0. */ |
| 3062 | h8_set_reg (sd, 0, close_return); |
| 3063 | } |
| 3064 | goto next; |
| 3065 | |
| 3066 | case O (O_SYS_FSTAT, SB): |
| 3067 | { |
| 3068 | int fd; /* File descriptor */ |
| 3069 | struct stat stat_rec; /* Stat record */ |
| 3070 | int fstat_return; /* Return value from callback to stat. */ |
| 3071 | int stat_ptr; /* Pointer to stat record. */ |
| 3072 | char *temp_stat_ptr; /* Temporary stat_rec pointer. */ |
| 3073 | |
| 3074 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
| 3075 | |
| 3076 | /* Setting stat_ptr to second argument of stat. */ |
| 3077 | stat_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); |
| 3078 | |
| 3079 | /* Callback stat and return. */ |
| 3080 | fstat_return = sim_callback->fstat (sim_callback, fd, &stat_rec); |
| 3081 | |
| 3082 | /* Have stat_ptr point to starting of stat_rec. */ |
| 3083 | temp_stat_ptr = (char *) (&stat_rec); |
| 3084 | |
| 3085 | /* Setting up the stat structure returned. */ |
| 3086 | SET_MEMORY_W (stat_ptr, stat_rec.st_dev); |
| 3087 | stat_ptr += 2; |
| 3088 | SET_MEMORY_W (stat_ptr, stat_rec.st_ino); |
| 3089 | stat_ptr += 2; |
| 3090 | SET_MEMORY_L (stat_ptr, stat_rec.st_mode); |
| 3091 | stat_ptr += 4; |
| 3092 | SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); |
| 3093 | stat_ptr += 2; |
| 3094 | SET_MEMORY_W (stat_ptr, stat_rec.st_uid); |
| 3095 | stat_ptr += 2; |
| 3096 | SET_MEMORY_W (stat_ptr, stat_rec.st_gid); |
| 3097 | stat_ptr += 2; |
| 3098 | SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); |
| 3099 | stat_ptr += 2; |
| 3100 | SET_MEMORY_L (stat_ptr, stat_rec.st_size); |
| 3101 | stat_ptr += 4; |
| 3102 | SET_MEMORY_L (stat_ptr, stat_rec.st_atime); |
| 3103 | stat_ptr += 8; |
| 3104 | SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); |
| 3105 | stat_ptr += 8; |
| 3106 | SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); |
| 3107 | |
| 3108 | /* Return value in register 0. */ |
| 3109 | h8_set_reg (sd, 0, fstat_return); |
| 3110 | } |
| 3111 | goto next; |
| 3112 | |
| 3113 | case O (O_SYS_STAT, SB): |
| 3114 | { |
| 3115 | int len = 0; /* Length of filename. */ |
| 3116 | char *filename; /* Filename would go here. */ |
| 3117 | char temp_char; /* Temporary character */ |
| 3118 | int filename_ptr; /* Pointer to filename in cpu memory. */ |
| 3119 | struct stat stat_rec; /* Stat record */ |
| 3120 | int stat_return; /* Return value from callback to stat */ |
| 3121 | int stat_ptr; /* Pointer to stat record. */ |
| 3122 | char *temp_stat_ptr; /* Temporary stat_rec pointer. */ |
| 3123 | int i = 0; /* Loop Counter */ |
| 3124 | |
| 3125 | /* Setting filename_ptr to first argument of open. */ |
| 3126 | filename_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
| 3127 | |
| 3128 | /* Trying to find the length of the filename. */ |
| 3129 | temp_char = GET_MEMORY_B (h8_get_reg (sd, 0)); |
| 3130 | |
| 3131 | len = 1; |
| 3132 | while (temp_char != '\0') |
| 3133 | { |
| 3134 | temp_char = GET_MEMORY_B (filename_ptr + len); |
| 3135 | len++; |
| 3136 | } |
| 3137 | |
| 3138 | /* Allocating space for the filename. */ |
| 3139 | filename = (char *) malloc (sizeof (char) * len); |
| 3140 | |
| 3141 | /* String copying the filename from memory. */ |
| 3142 | for (i = 0; i < len; i++) |
| 3143 | { |
| 3144 | temp_char = GET_MEMORY_B (filename_ptr + i); |
| 3145 | filename[i] = temp_char; |
| 3146 | } |
| 3147 | |
| 3148 | /* Setting stat_ptr to second argument of stat. */ |
| 3149 | /* stat_ptr = h8_get_reg (sd, 1); */ |
| 3150 | stat_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); |
| 3151 | |
| 3152 | /* Callback stat and return. */ |
| 3153 | stat_return = |
| 3154 | sim_callback->stat (sim_callback, filename, &stat_rec); |
| 3155 | |
| 3156 | /* Have stat_ptr point to starting of stat_rec. */ |
| 3157 | temp_stat_ptr = (char *) (&stat_rec); |
| 3158 | |
| 3159 | /* Freeing memory used for filename. */ |
| 3160 | free (filename); |
| 3161 | |
| 3162 | /* Setting up the stat structure returned. */ |
| 3163 | SET_MEMORY_W (stat_ptr, stat_rec.st_dev); |
| 3164 | stat_ptr += 2; |
| 3165 | SET_MEMORY_W (stat_ptr, stat_rec.st_ino); |
| 3166 | stat_ptr += 2; |
| 3167 | SET_MEMORY_L (stat_ptr, stat_rec.st_mode); |
| 3168 | stat_ptr += 4; |
| 3169 | SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); |
| 3170 | stat_ptr += 2; |
| 3171 | SET_MEMORY_W (stat_ptr, stat_rec.st_uid); |
| 3172 | stat_ptr += 2; |
| 3173 | SET_MEMORY_W (stat_ptr, stat_rec.st_gid); |
| 3174 | stat_ptr += 2; |
| 3175 | SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); |
| 3176 | stat_ptr += 2; |
| 3177 | SET_MEMORY_L (stat_ptr, stat_rec.st_size); |
| 3178 | stat_ptr += 4; |
| 3179 | SET_MEMORY_L (stat_ptr, stat_rec.st_atime); |
| 3180 | stat_ptr += 8; |
| 3181 | SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); |
| 3182 | stat_ptr += 8; |
| 3183 | SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); |
| 3184 | |
| 3185 | /* Return value in register 0. */ |
| 3186 | h8_set_reg (sd, 0, stat_return); |
| 3187 | } |
| 3188 | goto next; |
| 3189 | /* End of system call processing. */ |
| 3190 | |
| 3191 | case O (O_NOT, SB): /* not.b */ |
| 3192 | if (fetch2 (sd, &code->src, &rd)) |
| 3193 | goto end; |
| 3194 | rd = ~rd; |
| 3195 | v = 0; |
| 3196 | goto shift8; |
| 3197 | |
| 3198 | case O (O_NOT, SW): /* not.w */ |
| 3199 | if (fetch2 (sd, &code->src, &rd)) |
| 3200 | goto end; |
| 3201 | rd = ~rd; |
| 3202 | v = 0; |
| 3203 | goto shift16; |
| 3204 | |
| 3205 | case O (O_NOT, SL): /* not.l */ |
| 3206 | if (fetch2 (sd, &code->src, &rd)) |
| 3207 | goto end; |
| 3208 | rd = ~rd; |
| 3209 | v = 0; |
| 3210 | goto shift32; |
| 3211 | |
| 3212 | case O (O_SHLL, SB): /* shll.b */ |
| 3213 | case O (O_SHLR, SB): /* shlr.b */ |
| 3214 | if (fetch2 (sd, &code->dst, &rd)) |
| 3215 | goto end; |
| 3216 | |
| 3217 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
| 3218 | ea = 1; /* unary op */ |
| 3219 | else /* binary op */ |
| 3220 | fetch (sd, &code->src, &ea); |
| 3221 | |
| 3222 | if (code->opcode == O (O_SHLL, SB)) |
| 3223 | { |
| 3224 | v = (ea > 8); |
| 3225 | c = rd & (0x80 >> (ea - 1)); |
| 3226 | rd <<= ea; |
| 3227 | } |
| 3228 | else |
| 3229 | { |
| 3230 | v = 0; |
| 3231 | c = rd & (1 << (ea - 1)); |
| 3232 | rd = (unsigned char) rd >> ea; |
| 3233 | } |
| 3234 | goto shift8; |
| 3235 | |
| 3236 | case O (O_SHLL, SW): /* shll.w */ |
| 3237 | case O (O_SHLR, SW): /* shlr.w */ |
| 3238 | if (fetch2 (sd, &code->dst, &rd)) |
| 3239 | goto end; |
| 3240 | |
| 3241 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
| 3242 | ea = 1; /* unary op */ |
| 3243 | else |
| 3244 | fetch (sd, &code->src, &ea); |
| 3245 | |
| 3246 | if (code->opcode == O (O_SHLL, SW)) |
| 3247 | { |
| 3248 | v = (ea > 16); |
| 3249 | c = rd & (0x8000 >> (ea - 1)); |
| 3250 | rd <<= ea; |
| 3251 | } |
| 3252 | else |
| 3253 | { |
| 3254 | v = 0; |
| 3255 | c = rd & (1 << (ea - 1)); |
| 3256 | rd = (unsigned short) rd >> ea; |
| 3257 | } |
| 3258 | goto shift16; |
| 3259 | |
| 3260 | case O (O_SHLL, SL): /* shll.l */ |
| 3261 | case O (O_SHLR, SL): /* shlr.l */ |
| 3262 | if (fetch2 (sd, &code->dst, &rd)) |
| 3263 | goto end; |
| 3264 | |
| 3265 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
| 3266 | ea = 1; /* unary op */ |
| 3267 | else |
| 3268 | fetch (sd, &code->src, &ea); |
| 3269 | |
| 3270 | if (code->opcode == O (O_SHLL, SL)) |
| 3271 | { |
| 3272 | v = (ea > 32); |
| 3273 | c = rd & (0x80000000 >> (ea - 1)); |
| 3274 | rd <<= ea; |
| 3275 | } |
| 3276 | else |
| 3277 | { |
| 3278 | v = 0; |
| 3279 | c = rd & (1 << (ea - 1)); |
| 3280 | rd = (unsigned int) rd >> ea; |
| 3281 | } |
| 3282 | goto shift32; |
| 3283 | |
| 3284 | case O (O_SHAL, SB): |
| 3285 | case O (O_SHAR, SB): |
| 3286 | if (fetch2 (sd, &code->dst, &rd)) |
| 3287 | goto end; |
| 3288 | |
| 3289 | if (code->src.type == X (OP_IMM, SB)) |
| 3290 | fetch (sd, &code->src, &ea); |
| 3291 | else |
| 3292 | ea = 1; |
| 3293 | |
| 3294 | if (code->opcode == O (O_SHAL, SB)) |
| 3295 | { |
| 3296 | c = rd & (0x80 >> (ea - 1)); |
| 3297 | res = rd >> (7 - ea); |
| 3298 | v = ((res & 1) && !(res & 2)) |
| 3299 | || (!(res & 1) && (res & 2)); |
| 3300 | rd <<= ea; |
| 3301 | } |
| 3302 | else |
| 3303 | { |
| 3304 | c = rd & (1 << (ea - 1)); |
| 3305 | v = 0; |
| 3306 | rd = ((signed char) rd) >> ea; |
| 3307 | } |
| 3308 | goto shift8; |
| 3309 | |
| 3310 | case O (O_SHAL, SW): |
| 3311 | case O (O_SHAR, SW): |
| 3312 | if (fetch2 (sd, &code->dst, &rd)) |
| 3313 | goto end; |
| 3314 | |
| 3315 | if (code->src.type == X (OP_IMM, SW)) |
| 3316 | fetch (sd, &code->src, &ea); |
| 3317 | else |
| 3318 | ea = 1; |
| 3319 | |
| 3320 | if (code->opcode == O (O_SHAL, SW)) |
| 3321 | { |
| 3322 | c = rd & (0x8000 >> (ea - 1)); |
| 3323 | res = rd >> (15 - ea); |
| 3324 | v = ((res & 1) && !(res & 2)) |
| 3325 | || (!(res & 1) && (res & 2)); |
| 3326 | rd <<= ea; |
| 3327 | } |
| 3328 | else |
| 3329 | { |
| 3330 | c = rd & (1 << (ea - 1)); |
| 3331 | v = 0; |
| 3332 | rd = ((signed short) rd) >> ea; |
| 3333 | } |
| 3334 | goto shift16; |
| 3335 | |
| 3336 | case O (O_SHAL, SL): |
| 3337 | case O (O_SHAR, SL): |
| 3338 | if (fetch2 (sd, &code->dst, &rd)) |
| 3339 | goto end; |
| 3340 | |
| 3341 | if (code->src.type == X (OP_IMM, SL)) |
| 3342 | fetch (sd, &code->src, &ea); |
| 3343 | else |
| 3344 | ea = 1; |
| 3345 | |
| 3346 | if (code->opcode == O (O_SHAL, SL)) |
| 3347 | { |
| 3348 | c = rd & (0x80000000 >> (ea - 1)); |
| 3349 | res = rd >> (31 - ea); |
| 3350 | v = ((res & 1) && !(res & 2)) |
| 3351 | || (!(res & 1) && (res & 2)); |
| 3352 | rd <<= ea; |
| 3353 | } |
| 3354 | else |
| 3355 | { |
| 3356 | c = rd & (1 << (ea - 1)); |
| 3357 | v = 0; |
| 3358 | rd = ((signed int) rd) >> ea; |
| 3359 | } |
| 3360 | goto shift32; |
| 3361 | |
| 3362 | case O (O_ROTL, SB): |
| 3363 | case O (O_ROTR, SB): |
| 3364 | if (fetch2 (sd, &code->dst, &rd)) |
| 3365 | goto end; |
| 3366 | |
| 3367 | if (code->src.type == X (OP_IMM, SB)) |
| 3368 | fetch (sd, &code->src, &ea); |
| 3369 | else |
| 3370 | ea = 1; |
| 3371 | |
| 3372 | while (ea--) |
| 3373 | if (code->opcode == O (O_ROTL, SB)) |
| 3374 | { |
| 3375 | c = rd & 0x80; |
| 3376 | rd <<= 1; |
| 3377 | if (c) |
| 3378 | rd |= 1; |
| 3379 | } |
| 3380 | else |
| 3381 | { |
| 3382 | c = rd & 1; |
| 3383 | rd = ((unsigned char) rd) >> 1; |
| 3384 | if (c) |
| 3385 | rd |= 0x80; |
| 3386 | } |
| 3387 | |
| 3388 | v = 0; |
| 3389 | goto shift8; |
| 3390 | |
| 3391 | case O (O_ROTL, SW): |
| 3392 | case O (O_ROTR, SW): |
| 3393 | if (fetch2 (sd, &code->dst, &rd)) |
| 3394 | goto end; |
| 3395 | |
| 3396 | if (code->src.type == X (OP_IMM, SW)) |
| 3397 | fetch (sd, &code->src, &ea); |
| 3398 | else |
| 3399 | ea = 1; |
| 3400 | |
| 3401 | while (ea--) |
| 3402 | if (code->opcode == O (O_ROTL, SW)) |
| 3403 | { |
| 3404 | c = rd & 0x8000; |
| 3405 | rd <<= 1; |
| 3406 | if (c) |
| 3407 | rd |= 1; |
| 3408 | } |
| 3409 | else |
| 3410 | { |
| 3411 | c = rd & 1; |
| 3412 | rd = ((unsigned short) rd) >> 1; |
| 3413 | if (c) |
| 3414 | rd |= 0x8000; |
| 3415 | } |
| 3416 | |
| 3417 | v = 0; |
| 3418 | goto shift16; |
| 3419 | |
| 3420 | case O (O_ROTL, SL): |
| 3421 | case O (O_ROTR, SL): |
| 3422 | if (fetch2 (sd, &code->dst, &rd)) |
| 3423 | goto end; |
| 3424 | |
| 3425 | if (code->src.type == X (OP_IMM, SL)) |
| 3426 | fetch (sd, &code->src, &ea); |
| 3427 | else |
| 3428 | ea = 1; |
| 3429 | |
| 3430 | while (ea--) |
| 3431 | if (code->opcode == O (O_ROTL, SL)) |
| 3432 | { |
| 3433 | c = rd & 0x80000000; |
| 3434 | rd <<= 1; |
| 3435 | if (c) |
| 3436 | rd |= 1; |
| 3437 | } |
| 3438 | else |
| 3439 | { |
| 3440 | c = rd & 1; |
| 3441 | rd = ((unsigned int) rd) >> 1; |
| 3442 | if (c) |
| 3443 | rd |= 0x80000000; |
| 3444 | } |
| 3445 | |
| 3446 | v = 0; |
| 3447 | goto shift32; |
| 3448 | |
| 3449 | case O (O_ROTXL, SB): |
| 3450 | case O (O_ROTXR, SB): |
| 3451 | if (fetch2 (sd, &code->dst, &rd)) |
| 3452 | goto end; |
| 3453 | |
| 3454 | if (code->src.type == X (OP_IMM, SB)) |
| 3455 | fetch (sd, &code->src, &ea); |
| 3456 | else |
| 3457 | ea = 1; |
| 3458 | |
| 3459 | while (ea--) |
| 3460 | if (code->opcode == O (O_ROTXL, SB)) |
| 3461 | { |
| 3462 | res = rd & 0x80; |
| 3463 | rd <<= 1; |
| 3464 | if (C) |
| 3465 | rd |= 1; |
| 3466 | c = res; |
| 3467 | } |
| 3468 | else |
| 3469 | { |
| 3470 | res = rd & 1; |
| 3471 | rd = ((unsigned char) rd) >> 1; |
| 3472 | if (C) |
| 3473 | rd |= 0x80; |
| 3474 | c = res; |
| 3475 | } |
| 3476 | |
| 3477 | v = 0; |
| 3478 | goto shift8; |
| 3479 | |
| 3480 | case O (O_ROTXL, SW): |
| 3481 | case O (O_ROTXR, SW): |
| 3482 | if (fetch2 (sd, &code->dst, &rd)) |
| 3483 | goto end; |
| 3484 | |
| 3485 | if (code->src.type == X (OP_IMM, SW)) |
| 3486 | fetch (sd, &code->src, &ea); |
| 3487 | else |
| 3488 | ea = 1; |
| 3489 | |
| 3490 | while (ea--) |
| 3491 | if (code->opcode == O (O_ROTXL, SW)) |
| 3492 | { |
| 3493 | res = rd & 0x8000; |
| 3494 | rd <<= 1; |
| 3495 | if (C) |
| 3496 | rd |= 1; |
| 3497 | c = res; |
| 3498 | } |
| 3499 | else |
| 3500 | { |
| 3501 | res = rd & 1; |
| 3502 | rd = ((unsigned short) rd) >> 1; |
| 3503 | if (C) |
| 3504 | rd |= 0x8000; |
| 3505 | c = res; |
| 3506 | } |
| 3507 | |
| 3508 | v = 0; |
| 3509 | goto shift16; |
| 3510 | |
| 3511 | case O (O_ROTXL, SL): |
| 3512 | case O (O_ROTXR, SL): |
| 3513 | if (fetch2 (sd, &code->dst, &rd)) |
| 3514 | goto end; |
| 3515 | |
| 3516 | if (code->src.type == X (OP_IMM, SL)) |
| 3517 | fetch (sd, &code->src, &ea); |
| 3518 | else |
| 3519 | ea = 1; |
| 3520 | |
| 3521 | while (ea--) |
| 3522 | if (code->opcode == O (O_ROTXL, SL)) |
| 3523 | { |
| 3524 | res = rd & 0x80000000; |
| 3525 | rd <<= 1; |
| 3526 | if (C) |
| 3527 | rd |= 1; |
| 3528 | c = res; |
| 3529 | } |
| 3530 | else |
| 3531 | { |
| 3532 | res = rd & 1; |
| 3533 | rd = ((unsigned int) rd) >> 1; |
| 3534 | if (C) |
| 3535 | rd |= 0x80000000; |
| 3536 | c = res; |
| 3537 | } |
| 3538 | |
| 3539 | v = 0; |
| 3540 | goto shift32; |
| 3541 | |
| 3542 | case O (O_JMP, SN): |
| 3543 | case O (O_JMP, SL): |
| 3544 | case O (O_JMP, SB): /* jmp */ |
| 3545 | case O (O_JMP, SW): |
| 3546 | fetch (sd, &code->src, &pc); |
| 3547 | goto end; |
| 3548 | |
| 3549 | case O (O_JSR, SN): |
| 3550 | case O (O_JSR, SL): |
| 3551 | case O (O_JSR, SB): /* jsr, jump to subroutine */ |
| 3552 | case O (O_JSR, SW): |
| 3553 | if (fetch (sd, &code->src, &pc)) |
| 3554 | goto end; |
| 3555 | call: |
| 3556 | tmp = h8_get_reg (sd, SP_REGNUM); |
| 3557 | |
| 3558 | if (h8300hmode && !h8300_normal_mode) |
| 3559 | { |
| 3560 | tmp -= 4; |
| 3561 | SET_MEMORY_L (tmp, code->next_pc); |
| 3562 | } |
| 3563 | else |
| 3564 | { |
| 3565 | tmp -= 2; |
| 3566 | SET_MEMORY_W (tmp, code->next_pc); |
| 3567 | } |
| 3568 | h8_set_reg (sd, SP_REGNUM, tmp); |
| 3569 | |
| 3570 | goto end; |
| 3571 | |
| 3572 | case O (O_BSR, SW): |
| 3573 | case O (O_BSR, SL): |
| 3574 | case O (O_BSR, SB): /* bsr, branch to subroutine */ |
| 3575 | if (fetch (sd, &code->src, &res)) |
| 3576 | goto end; |
| 3577 | pc = code->next_pc + res; |
| 3578 | goto call; |
| 3579 | |
| 3580 | case O (O_RTE, SN): /* rte, return from exception */ |
| 3581 | rte: |
| 3582 | /* Pops exr and ccr before pc -- otherwise identical to rts. */ |
| 3583 | tmp = h8_get_reg (sd, SP_REGNUM); |
| 3584 | |
| 3585 | if (h8300smode) /* pop exr */ |
| 3586 | { |
| 3587 | h8_set_exr (sd, GET_MEMORY_L (tmp)); |
| 3588 | tmp += 4; |
| 3589 | } |
| 3590 | if (h8300hmode && !h8300_normal_mode) |
| 3591 | { |
| 3592 | h8_set_ccr (sd, GET_MEMORY_L (tmp)); |
| 3593 | tmp += 4; |
| 3594 | pc = GET_MEMORY_L (tmp); |
| 3595 | tmp += 4; |
| 3596 | } |
| 3597 | else |
| 3598 | { |
| 3599 | h8_set_ccr (sd, GET_MEMORY_W (tmp)); |
| 3600 | tmp += 2; |
| 3601 | pc = GET_MEMORY_W (tmp); |
| 3602 | tmp += 2; |
| 3603 | } |
| 3604 | |
| 3605 | GETSR (sd); |
| 3606 | h8_set_reg (sd, SP_REGNUM, tmp); |
| 3607 | goto end; |
| 3608 | |
| 3609 | case O (O_RTS, SN): /* rts, return from subroutine */ |
| 3610 | rts: |
| 3611 | tmp = h8_get_reg (sd, SP_REGNUM); |
| 3612 | |
| 3613 | if (h8300hmode && !h8300_normal_mode) |
| 3614 | { |
| 3615 | pc = GET_MEMORY_L (tmp); |
| 3616 | tmp += 4; |
| 3617 | } |
| 3618 | else |
| 3619 | { |
| 3620 | pc = GET_MEMORY_W (tmp); |
| 3621 | tmp += 2; |
| 3622 | } |
| 3623 | |
| 3624 | h8_set_reg (sd, SP_REGNUM, tmp); |
| 3625 | goto end; |
| 3626 | |
| 3627 | case O (O_ILL, SB): /* illegal */ |
| 3628 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); |
| 3629 | goto end; |
| 3630 | |
| 3631 | case O (O_SLEEP, SN): /* sleep */ |
| 3632 | /* Check for magic numbers in r1 and r2. */ |
| 3633 | if ((h8_get_reg (sd, R1_REGNUM) & 0xffff) == LIBC_EXIT_MAGIC1 && |
| 3634 | (h8_get_reg (sd, R2_REGNUM) & 0xffff) == LIBC_EXIT_MAGIC2 && |
| 3635 | SIM_WIFEXITED (h8_get_reg (sd, 0))) |
| 3636 | { |
| 3637 | /* This trap comes from _exit, not from gdb. */ |
| 3638 | sim_engine_set_run_state (sd, sim_exited, |
| 3639 | SIM_WEXITSTATUS (h8_get_reg (sd, 0))); |
| 3640 | } |
| 3641 | #if 0 |
| 3642 | /* Unfortunately this won't really work, because |
| 3643 | when we take a breakpoint trap, R0 has a "random", |
| 3644 | user-defined value. Don't see any immediate solution. */ |
| 3645 | else if (SIM_WIFSTOPPED (h8_get_reg (sd, 0))) |
| 3646 | { |
| 3647 | /* Pass the stop signal up to gdb. */ |
| 3648 | sim_engine_set_run_state (sd, sim_stopped, |
| 3649 | SIM_WSTOPSIG (h8_get_reg (sd, 0))); |
| 3650 | } |
| 3651 | #endif |
| 3652 | else |
| 3653 | { |
| 3654 | /* Treat it as a sigtrap. */ |
| 3655 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); |
| 3656 | } |
| 3657 | goto end; |
| 3658 | |
| 3659 | case O (O_TRAPA, SB): /* trapa */ |
| 3660 | if (fetch (sd, &code->src, &res)) |
| 3661 | goto end; /* res is vector number. */ |
| 3662 | |
| 3663 | tmp = h8_get_reg (sd, SP_REGNUM); |
| 3664 | if(h8300_normal_mode) |
| 3665 | { |
| 3666 | tmp -= 2; |
| 3667 | SET_MEMORY_W (tmp, code->next_pc); |
| 3668 | tmp -= 2; |
| 3669 | SET_MEMORY_W (tmp, h8_get_ccr (sd)); |
| 3670 | } |
| 3671 | else |
| 3672 | { |
| 3673 | tmp -= 4; |
| 3674 | SET_MEMORY_L (tmp, code->next_pc); |
| 3675 | tmp -= 4; |
| 3676 | SET_MEMORY_L (tmp, h8_get_ccr (sd)); |
| 3677 | } |
| 3678 | intMaskBit = 1; |
| 3679 | BUILDSR (sd); |
| 3680 | |
| 3681 | if (h8300smode) |
| 3682 | { |
| 3683 | tmp -= 4; |
| 3684 | SET_MEMORY_L (tmp, h8_get_exr (sd)); |
| 3685 | } |
| 3686 | |
| 3687 | h8_set_reg (sd, SP_REGNUM, tmp); |
| 3688 | |
| 3689 | if(h8300_normal_mode) |
| 3690 | pc = GET_MEMORY_L (0x10 + res * 2); /* Vector addresses are 0x10,0x12,0x14 and 0x16 */ |
| 3691 | else |
| 3692 | pc = GET_MEMORY_L (0x20 + res * 4); |
| 3693 | goto end; |
| 3694 | |
| 3695 | case O (O_BPT, SN): |
| 3696 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); |
| 3697 | goto end; |
| 3698 | |
| 3699 | case O (O_BSETEQ, SB): |
| 3700 | if (Z) |
| 3701 | goto bset; |
| 3702 | goto next; |
| 3703 | |
| 3704 | case O (O_BSETNE, SB): |
| 3705 | if (!Z) |
| 3706 | goto bset; |
| 3707 | goto next; |
| 3708 | |
| 3709 | case O (O_BCLREQ, SB): |
| 3710 | if (Z) |
| 3711 | goto bclr; |
| 3712 | goto next; |
| 3713 | |
| 3714 | case O (O_BCLRNE, SB): |
| 3715 | if (!Z) |
| 3716 | goto bclr; |
| 3717 | goto next; |
| 3718 | |
| 3719 | OBITOP (O_BNOT, 1, 1, ea ^= m); /* bnot */ |
| 3720 | OBITOP (O_BTST, 1, 0, nz = ea & m); /* btst */ |
| 3721 | bset: |
| 3722 | OBITOP (O_BSET, 1, 1, ea |= m); /* bset */ |
| 3723 | bclr: |
| 3724 | OBITOP (O_BCLR, 1, 1, ea &= ~m); /* bclr */ |
| 3725 | OBITOP (O_BLD, 1, 0, c = ea & m); /* bld */ |
| 3726 | OBITOP (O_BILD, 1, 0, c = !(ea & m)); /* bild */ |
| 3727 | OBITOP (O_BST, 1, 1, ea &= ~m; |
| 3728 | if (C) ea |= m); /* bst */ |
| 3729 | OBITOP (O_BIST, 1, 1, ea &= ~m; |
| 3730 | if (!C) ea |= m); /* bist */ |
| 3731 | OBITOP (O_BSTZ, 1, 1, ea &= ~m; |
| 3732 | if (Z) ea |= m); /* bstz */ |
| 3733 | OBITOP (O_BISTZ, 1, 1, ea &= ~m; |
| 3734 | if (!Z) ea |= m); /* bistz */ |
| 3735 | OBITOP (O_BAND, 1, 0, c = (ea & m) && C); /* band */ |
| 3736 | OBITOP (O_BIAND, 1, 0, c = !(ea & m) && C); /* biand */ |
| 3737 | OBITOP (O_BOR, 1, 0, c = (ea & m) || C); /* bor */ |
| 3738 | OBITOP (O_BIOR, 1, 0, c = !(ea & m) || C); /* bior */ |
| 3739 | OBITOP (O_BXOR, 1, 0, c = ((ea & m) != 0)!= C); /* bxor */ |
| 3740 | OBITOP (O_BIXOR, 1, 0, c = !(ea & m) != C); /* bixor */ |
| 3741 | |
| 3742 | case O (O_BFLD, SB): /* bfld */ |
| 3743 | /* bitfield load */ |
| 3744 | ea = 0; |
| 3745 | if (fetch (sd, &code->src, &bit)) |
| 3746 | goto end; |
| 3747 | |
| 3748 | if (bit != 0) |
| 3749 | { |
| 3750 | if (fetch (sd, &code->dst, &ea)) |
| 3751 | goto end; |
| 3752 | |
| 3753 | ea &= bit; |
| 3754 | while (!(bit & 1)) |
| 3755 | { |
| 3756 | ea >>= 1; |
| 3757 | bit >>= 1; |
| 3758 | } |
| 3759 | } |
| 3760 | if (store (sd, &code->op3, ea)) |
| 3761 | goto end; |
| 3762 | |
| 3763 | goto next; |
| 3764 | |
| 3765 | case O(O_BFST, SB): /* bfst */ |
| 3766 | /* bitfield store */ |
| 3767 | /* NOTE: the imm8 value is in dst, and the ea value |
| 3768 | (which is actually the destination) is in op3. |
| 3769 | It has to be that way, to avoid breaking the assembler. */ |
| 3770 | |
| 3771 | if (fetch (sd, &code->dst, &bit)) /* imm8 */ |
| 3772 | goto end; |
| 3773 | if (bit == 0) /* noop -- nothing to do. */ |
| 3774 | goto next; |
| 3775 | |
| 3776 | if (fetch (sd, &code->src, &rd)) /* reg8 src */ |
| 3777 | goto end; |
| 3778 | |
| 3779 | if (fetch2 (sd, &code->op3, &ea)) /* ea dst */ |
| 3780 | goto end; |
| 3781 | |
| 3782 | /* Left-shift the register data into position. */ |
| 3783 | for (tmp = bit; !(tmp & 1); tmp >>= 1) |
| 3784 | rd <<= 1; |
| 3785 | |
| 3786 | /* Combine it with the neighboring bits. */ |
| 3787 | ea = (ea & ~bit) | (rd & bit); |
| 3788 | |
| 3789 | /* Put it back. */ |
| 3790 | if (store2 (sd, &code->op3, ea)) |
| 3791 | goto end; |
| 3792 | goto next; |
| 3793 | |
| 3794 | case O (O_CLRMAC, SN): /* clrmac */ |
| 3795 | h8_set_mach (sd, 0); |
| 3796 | h8_set_macl (sd, 0); |
| 3797 | h8_set_macZ (sd, 1); |
| 3798 | h8_set_macV (sd, 0); |
| 3799 | h8_set_macN (sd, 0); |
| 3800 | goto next; |
| 3801 | |
| 3802 | case O (O_STMAC, SL): /* stmac, 260 */ |
| 3803 | switch (code->src.type) { |
| 3804 | case X (OP_MACH, SL): |
| 3805 | res = h8_get_mach (sd); |
| 3806 | if (res & 0x200) /* sign extend */ |
| 3807 | res |= 0xfffffc00; |
| 3808 | break; |
| 3809 | case X (OP_MACL, SL): |
| 3810 | res = h8_get_macl (sd); |
| 3811 | break; |
| 3812 | default: goto illegal; |
| 3813 | } |
| 3814 | nz = !h8_get_macZ (sd); |
| 3815 | n = h8_get_macN (sd); |
| 3816 | v = h8_get_macV (sd); |
| 3817 | |
| 3818 | if (store (sd, &code->dst, res)) |
| 3819 | goto end; |
| 3820 | |
| 3821 | goto next; |
| 3822 | |
| 3823 | case O (O_LDMAC, SL): /* ldmac, 179 */ |
| 3824 | if (fetch (sd, &code->src, &rd)) |
| 3825 | goto end; |
| 3826 | |
| 3827 | switch (code->dst.type) { |
| 3828 | case X (OP_MACH, SL): |
| 3829 | rd &= 0x3ff; /* Truncate to 10 bits */ |
| 3830 | h8_set_mach (sd, rd); |
| 3831 | break; |
| 3832 | case X (OP_MACL, SL): |
| 3833 | h8_set_macl (sd, rd); |
| 3834 | break; |
| 3835 | default: goto illegal; |
| 3836 | } |
| 3837 | h8_set_macV (sd, 0); |
| 3838 | goto next; |
| 3839 | |
| 3840 | case O (O_MAC, SW): |
| 3841 | if (fetch (sd, &code->src, &rd) || |
| 3842 | fetch (sd, &code->dst, &res)) |
| 3843 | goto end; |
| 3844 | |
| 3845 | /* Ye gods, this is non-portable! |
| 3846 | However, the existing mul/div code is similar. */ |
| 3847 | res = SEXTSHORT (res) * SEXTSHORT (rd); |
| 3848 | |
| 3849 | if (h8_get_macS (sd)) /* Saturating mode */ |
| 3850 | { |
| 3851 | long long mac = h8_get_macl (sd); |
| 3852 | |
| 3853 | if (mac & 0x80000000) /* sign extend */ |
| 3854 | mac |= 0xffffffff00000000LL; |
| 3855 | |
| 3856 | mac += res; |
| 3857 | if (mac > 0x7fffffff || mac < 0xffffffff80000000LL) |
| 3858 | h8_set_macV (sd, 1); |
| 3859 | h8_set_macZ (sd, (mac == 0)); |
| 3860 | h8_set_macN (sd, (mac < 0)); |
| 3861 | h8_set_macl (sd, (int) mac); |
| 3862 | } |
| 3863 | else /* "Less Saturating" mode */ |
| 3864 | { |
| 3865 | long long mac = h8_get_mach (sd); |
| 3866 | mac <<= 32; |
| 3867 | mac += h8_get_macl (sd); |
| 3868 | |
| 3869 | if (mac & 0x20000000000LL) /* sign extend */ |
| 3870 | mac |= 0xfffffc0000000000LL; |
| 3871 | |
| 3872 | mac += res; |
| 3873 | if (mac > 0x1ffffffffffLL || |
| 3874 | mac < (long long) 0xfffffe0000000000LL) |
| 3875 | h8_set_macV (sd, 1); |
| 3876 | h8_set_macZ (sd, (mac == 0)); |
| 3877 | h8_set_macN (sd, (mac < 0)); |
| 3878 | h8_set_macl (sd, (int) mac); |
| 3879 | mac >>= 32; |
| 3880 | h8_set_mach (sd, (int) (mac & 0x3ff)); |
| 3881 | } |
| 3882 | goto next; |
| 3883 | |
| 3884 | case O (O_MULS, SW): /* muls.w */ |
| 3885 | if (fetch (sd, &code->src, &ea) || |
| 3886 | fetch (sd, &code->dst, &rd)) |
| 3887 | goto end; |
| 3888 | |
| 3889 | /* FIXME: is this the right place to be doing sign extend? */ |
| 3890 | if (OP_KIND (code->src.type) == OP_IMM && |
| 3891 | (ea & 8) != 0) |
| 3892 | ea |= 0xfff0; |
| 3893 | else |
| 3894 | ea = SEXTSHORT (ea); |
| 3895 | |
| 3896 | res = SEXTSHORT (ea * SEXTSHORT (rd)); |
| 3897 | |
| 3898 | n = res & 0x8000; |
| 3899 | nz = res & 0xffff; |
| 3900 | if (store (sd, &code->dst, res)) |
| 3901 | goto end; |
| 3902 | |
| 3903 | goto next; |
| 3904 | |
| 3905 | case O (O_MULS, SL): /* muls.l */ |
| 3906 | if (fetch (sd, &code->src, &ea) || |
| 3907 | fetch (sd, &code->dst, &rd)) |
| 3908 | goto end; |
| 3909 | |
| 3910 | /* FIXME: is this the right place to be doing sign extend? */ |
| 3911 | if (OP_KIND (code->src.type) == OP_IMM && |
| 3912 | (ea & 8) != 0) |
| 3913 | ea |= 0xfffffff0; |
| 3914 | |
| 3915 | res = ea * rd; |
| 3916 | |
| 3917 | n = res & 0x80000000; |
| 3918 | nz = res & 0xffffffff; |
| 3919 | if (store (sd, &code->dst, res)) |
| 3920 | goto end; |
| 3921 | goto next; |
| 3922 | |
| 3923 | case O (O_MULSU, SL): /* muls/u.l */ |
| 3924 | if (fetch (sd, &code->src, &ea) || |
| 3925 | fetch (sd, &code->dst, &rd)) |
| 3926 | goto end; |
| 3927 | |
| 3928 | /* FIXME: is this the right place to be doing sign extend? */ |
| 3929 | if (OP_KIND (code->src.type) == OP_IMM && |
| 3930 | (ea & 8) != 0) |
| 3931 | ea |= 0xfffffff0; |
| 3932 | |
| 3933 | /* Compute upper 32 bits of the 64-bit result. */ |
| 3934 | res = (((long long) ea) * ((long long) rd)) >> 32; |
| 3935 | |
| 3936 | n = res & 0x80000000; |
| 3937 | nz = res & 0xffffffff; |
| 3938 | if (store (sd, &code->dst, res)) |
| 3939 | goto end; |
| 3940 | goto next; |
| 3941 | |
| 3942 | case O (O_MULU, SW): /* mulu.w */ |
| 3943 | if (fetch (sd, &code->src, &ea) || |
| 3944 | fetch (sd, &code->dst, &rd)) |
| 3945 | goto end; |
| 3946 | |
| 3947 | res = UEXTSHORT ((UEXTSHORT (ea) * UEXTSHORT (rd))); |
| 3948 | |
| 3949 | /* Don't set Z or N. */ |
| 3950 | if (store (sd, &code->dst, res)) |
| 3951 | goto end; |
| 3952 | |
| 3953 | goto next; |
| 3954 | |
| 3955 | case O (O_MULU, SL): /* mulu.l */ |
| 3956 | if (fetch (sd, &code->src, &ea) || |
| 3957 | fetch (sd, &code->dst, &rd)) |
| 3958 | goto end; |
| 3959 | |
| 3960 | res = ea * rd; |
| 3961 | |
| 3962 | /* Don't set Z or N. */ |
| 3963 | if (store (sd, &code->dst, res)) |
| 3964 | goto end; |
| 3965 | |
| 3966 | goto next; |
| 3967 | |
| 3968 | case O (O_MULUU, SL): /* mulu/u.l */ |
| 3969 | if (fetch (sd, &code->src, &ea) || |
| 3970 | fetch (sd, &code->dst, &rd)) |
| 3971 | goto end; |
| 3972 | |
| 3973 | /* Compute upper 32 bits of the 64-bit result. */ |
| 3974 | res = (((unsigned long long) (unsigned) ea) * |
| 3975 | ((unsigned long long) (unsigned) rd)) >> 32; |
| 3976 | |
| 3977 | /* Don't set Z or N. */ |
| 3978 | if (store (sd, &code->dst, res)) |
| 3979 | goto end; |
| 3980 | |
| 3981 | goto next; |
| 3982 | |
| 3983 | case O (O_MULXS, SB): /* mulxs.b */ |
| 3984 | if (fetch (sd, &code->src, &ea) || |
| 3985 | fetch (sd, &code->dst, &rd)) |
| 3986 | goto end; |
| 3987 | |
| 3988 | /* FIXME: is this the right place to be doing sign extend? */ |
| 3989 | if (OP_KIND (code->src.type) == OP_IMM && |
| 3990 | (ea & 8) != 0) |
| 3991 | ea |= 0xfffffff0; |
| 3992 | else |
| 3993 | ea = SEXTCHAR (ea); |
| 3994 | |
| 3995 | res = ea * SEXTCHAR (rd); |
| 3996 | |
| 3997 | n = res & 0x8000; |
| 3998 | nz = res & 0xffff; |
| 3999 | if (store (sd, &code->dst, res)) |
| 4000 | goto end; |
| 4001 | |
| 4002 | goto next; |
| 4003 | |
| 4004 | case O (O_MULXS, SW): /* mulxs.w */ |
| 4005 | if (fetch (sd, &code->src, &ea) || |
| 4006 | fetch (sd, &code->dst, &rd)) |
| 4007 | goto end; |
| 4008 | |
| 4009 | /* FIXME: is this the right place to be doing sign extend? */ |
| 4010 | if (OP_KIND (code->src.type) == OP_IMM && |
| 4011 | (ea & 8) != 0) |
| 4012 | ea |= 0xfff0; |
| 4013 | else |
| 4014 | ea = SEXTSHORT (ea); |
| 4015 | |
| 4016 | res = ea * SEXTSHORT (rd & 0xffff); |
| 4017 | |
| 4018 | n = res & 0x80000000; |
| 4019 | nz = res & 0xffffffff; |
| 4020 | if (store (sd, &code->dst, res)) |
| 4021 | goto end; |
| 4022 | |
| 4023 | goto next; |
| 4024 | |
| 4025 | case O (O_MULXU, SB): /* mulxu.b */ |
| 4026 | if (fetch (sd, &code->src, &ea) || |
| 4027 | fetch (sd, &code->dst, &rd)) |
| 4028 | goto end; |
| 4029 | |
| 4030 | res = UEXTCHAR (ea) * UEXTCHAR (rd); |
| 4031 | |
| 4032 | if (store (sd, &code->dst, res)) |
| 4033 | goto end; |
| 4034 | |
| 4035 | goto next; |
| 4036 | |
| 4037 | case O (O_MULXU, SW): /* mulxu.w */ |
| 4038 | if (fetch (sd, &code->src, &ea) || |
| 4039 | fetch (sd, &code->dst, &rd)) |
| 4040 | goto end; |
| 4041 | |
| 4042 | res = UEXTSHORT (ea) * UEXTSHORT (rd); |
| 4043 | |
| 4044 | if (store (sd, &code->dst, res)) |
| 4045 | goto end; |
| 4046 | |
| 4047 | goto next; |
| 4048 | |
| 4049 | case O (O_TAS, SB): /* tas (test and set) */ |
| 4050 | if (!h8300sxmode) /* h8sx can use any register. */ |
| 4051 | switch (code->src.reg) |
| 4052 | { |
| 4053 | case R0_REGNUM: |
| 4054 | case R1_REGNUM: |
| 4055 | case R4_REGNUM: |
| 4056 | case R5_REGNUM: |
| 4057 | break; |
| 4058 | default: |
| 4059 | goto illegal; |
| 4060 | } |
| 4061 | |
| 4062 | if (fetch (sd, &code->src, &res)) |
| 4063 | goto end; |
| 4064 | if (store (sd, &code->src, res | 0x80)) |
| 4065 | goto end; |
| 4066 | |
| 4067 | goto just_flags_log8; |
| 4068 | |
| 4069 | case O (O_DIVU, SW): /* divu.w */ |
| 4070 | if (fetch (sd, &code->src, &ea) || |
| 4071 | fetch (sd, &code->dst, &rd)) |
| 4072 | goto end; |
| 4073 | |
| 4074 | n = ea & 0x8000; |
| 4075 | nz = ea & 0xffff; |
| 4076 | if (ea) |
| 4077 | res = (unsigned) (UEXTSHORT (rd) / UEXTSHORT (ea)); |
| 4078 | else |
| 4079 | res = 0; |
| 4080 | |
| 4081 | if (store (sd, &code->dst, res)) |
| 4082 | goto end; |
| 4083 | goto next; |
| 4084 | |
| 4085 | case O (O_DIVU, SL): /* divu.l */ |
| 4086 | if (fetch (sd, &code->src, &ea) || |
| 4087 | fetch (sd, &code->dst, &rd)) |
| 4088 | goto end; |
| 4089 | |
| 4090 | n = ea & 0x80000000; |
| 4091 | nz = ea & 0xffffffff; |
| 4092 | if (ea) |
| 4093 | res = (unsigned) rd / ea; |
| 4094 | else |
| 4095 | res = 0; |
| 4096 | |
| 4097 | if (store (sd, &code->dst, res)) |
| 4098 | goto end; |
| 4099 | goto next; |
| 4100 | |
| 4101 | case O (O_DIVS, SW): /* divs.w */ |
| 4102 | if (fetch (sd, &code->src, &ea) || |
| 4103 | fetch (sd, &code->dst, &rd)) |
| 4104 | goto end; |
| 4105 | |
| 4106 | /* FIXME: is this the right place to be doing sign extend? */ |
| 4107 | if (OP_KIND (code->src.type) == OP_IMM && |
| 4108 | (ea & 8) != 0) |
| 4109 | ea |= 0xfffffff0; |
| 4110 | |
| 4111 | if (ea) |
| 4112 | { |
| 4113 | res = SEXTSHORT (rd) / SEXTSHORT (ea); |
| 4114 | nz = 1; |
| 4115 | } |
| 4116 | else |
| 4117 | { |
| 4118 | res = 0; |
| 4119 | nz = 0; |
| 4120 | } |
| 4121 | |
| 4122 | n = res & 0x8000; |
| 4123 | if (store (sd, &code->dst, res)) |
| 4124 | goto end; |
| 4125 | goto next; |
| 4126 | |
| 4127 | case O (O_DIVS, SL): /* divs.l */ |
| 4128 | if (fetch (sd, &code->src, &ea) || |
| 4129 | fetch (sd, &code->dst, &rd)) |
| 4130 | goto end; |
| 4131 | |
| 4132 | /* FIXME: is this the right place to be doing sign extend? */ |
| 4133 | if (OP_KIND (code->src.type) == OP_IMM && |
| 4134 | (ea & 8) != 0) |
| 4135 | ea |= 0xfffffff0; |
| 4136 | |
| 4137 | if (ea) |
| 4138 | { |
| 4139 | res = rd / ea; |
| 4140 | nz = 1; |
| 4141 | } |
| 4142 | else |
| 4143 | { |
| 4144 | res = 0; |
| 4145 | nz = 0; |
| 4146 | } |
| 4147 | |
| 4148 | n = res & 0x80000000; |
| 4149 | if (store (sd, &code->dst, res)) |
| 4150 | goto end; |
| 4151 | goto next; |
| 4152 | |
| 4153 | case O (O_DIVXU, SB): /* divxu.b */ |
| 4154 | if (fetch (sd, &code->src, &ea) || |
| 4155 | fetch (sd, &code->dst, &rd)) |
| 4156 | goto end; |
| 4157 | |
| 4158 | rd = UEXTSHORT (rd); |
| 4159 | ea = UEXTCHAR (ea); |
| 4160 | |
| 4161 | n = ea & 0x80; |
| 4162 | nz = ea & 0xff; |
| 4163 | if (ea) |
| 4164 | { |
| 4165 | tmp = (unsigned) rd % ea; |
| 4166 | res = (unsigned) rd / ea; |
| 4167 | } |
| 4168 | else |
| 4169 | { |
| 4170 | tmp = 0; |
| 4171 | res = 0; |
| 4172 | } |
| 4173 | |
| 4174 | if (store (sd, &code->dst, (res & 0xff) | (tmp << 8))) |
| 4175 | goto end; |
| 4176 | goto next; |
| 4177 | |
| 4178 | case O (O_DIVXU, SW): /* divxu.w */ |
| 4179 | if (fetch (sd, &code->src, &ea) || |
| 4180 | fetch (sd, &code->dst, &rd)) |
| 4181 | goto end; |
| 4182 | |
| 4183 | ea = UEXTSHORT (ea); |
| 4184 | |
| 4185 | n = ea & 0x8000; |
| 4186 | nz = ea & 0xffff; |
| 4187 | if (ea) |
| 4188 | { |
| 4189 | tmp = (unsigned) rd % ea; |
| 4190 | res = (unsigned) rd / ea; |
| 4191 | } |
| 4192 | else |
| 4193 | { |
| 4194 | tmp = 0; |
| 4195 | res = 0; |
| 4196 | } |
| 4197 | |
| 4198 | if (store (sd, &code->dst, (res & 0xffff) | (tmp << 16))) |
| 4199 | goto end; |
| 4200 | goto next; |
| 4201 | |
| 4202 | case O (O_DIVXS, SB): /* divxs.b */ |
| 4203 | if (fetch (sd, &code->src, &ea) || |
| 4204 | fetch (sd, &code->dst, &rd)) |
| 4205 | goto end; |
| 4206 | |
| 4207 | rd = SEXTSHORT (rd); |
| 4208 | |
| 4209 | /* FIXME: is this the right place to be doing sign extend? */ |
| 4210 | if (OP_KIND (code->src.type) == OP_IMM && |
| 4211 | (ea & 8) != 0) |
| 4212 | ea |= 0xfffffff0; |
| 4213 | else |
| 4214 | ea = SEXTCHAR (ea); |
| 4215 | |
| 4216 | if (ea) |
| 4217 | { |
| 4218 | tmp = (int) rd % (int) ea; |
| 4219 | res = (int) rd / (int) ea; |
| 4220 | nz = 1; |
| 4221 | } |
| 4222 | else |
| 4223 | { |
| 4224 | tmp = 0; |
| 4225 | res = 0; |
| 4226 | nz = 0; |
| 4227 | } |
| 4228 | |
| 4229 | n = res & 0x8000; |
| 4230 | if (store (sd, &code->dst, (res & 0xff) | (tmp << 8))) |
| 4231 | goto end; |
| 4232 | goto next; |
| 4233 | |
| 4234 | case O (O_DIVXS, SW): /* divxs.w */ |
| 4235 | if (fetch (sd, &code->src, &ea) || |
| 4236 | fetch (sd, &code->dst, &rd)) |
| 4237 | goto end; |
| 4238 | |
| 4239 | /* FIXME: is this the right place to be doing sign extend? */ |
| 4240 | if (OP_KIND (code->src.type) == OP_IMM && |
| 4241 | (ea & 8) != 0) |
| 4242 | ea |= 0xfffffff0; |
| 4243 | else |
| 4244 | ea = SEXTSHORT (ea); |
| 4245 | |
| 4246 | if (ea) |
| 4247 | { |
| 4248 | tmp = (int) rd % (int) ea; |
| 4249 | res = (int) rd / (int) ea; |
| 4250 | nz = 1; |
| 4251 | } |
| 4252 | else |
| 4253 | { |
| 4254 | tmp = 0; |
| 4255 | res = 0; |
| 4256 | nz = 0; |
| 4257 | } |
| 4258 | |
| 4259 | n = res & 0x80000000; |
| 4260 | if (store (sd, &code->dst, (res & 0xffff) | (tmp << 16))) |
| 4261 | goto end; |
| 4262 | goto next; |
| 4263 | |
| 4264 | case O (O_EXTS, SW): /* exts.w, signed extend */ |
| 4265 | if (fetch2 (sd, &code->dst, &rd)) |
| 4266 | goto end; |
| 4267 | ea = rd & 0x80 ? -256 : 0; |
| 4268 | res = (rd & 0xff) + ea; |
| 4269 | goto log16; |
| 4270 | |
| 4271 | case O (O_EXTS, SL): /* exts.l, signed extend */ |
| 4272 | if (fetch2 (sd, &code->dst, &rd)) |
| 4273 | goto end; |
| 4274 | if (code->src.type == X (OP_IMM, SL)) |
| 4275 | { |
| 4276 | if (fetch (sd, &code->src, &ea)) |
| 4277 | goto end; |
| 4278 | |
| 4279 | if (ea == 2) /* exts.l #2, nn */ |
| 4280 | { |
| 4281 | /* Sign-extend from 8-bit to 32-bit. */ |
| 4282 | ea = rd & 0x80 ? -256 : 0; |
| 4283 | res = (rd & 0xff) + ea; |
| 4284 | goto log32; |
| 4285 | } |
| 4286 | } |
| 4287 | /* Sign-extend from 16-bit to 32-bit. */ |
| 4288 | ea = rd & 0x8000 ? -65536 : 0; |
| 4289 | res = (rd & 0xffff) + ea; |
| 4290 | goto log32; |
| 4291 | |
| 4292 | case O (O_EXTU, SW): /* extu.w, unsigned extend */ |
| 4293 | if (fetch2 (sd, &code->dst, &rd)) |
| 4294 | goto end; |
| 4295 | ea = 0; |
| 4296 | res = (rd & 0xff) + ea; |
| 4297 | goto log16; |
| 4298 | |
| 4299 | case O (O_EXTU, SL): /* extu.l, unsigned extend */ |
| 4300 | if (fetch2 (sd, &code->dst, &rd)) |
| 4301 | goto end; |
| 4302 | if (code->src.type == X (OP_IMM, SL)) |
| 4303 | { |
| 4304 | if (fetch (sd, &code->src, &ea)) |
| 4305 | goto end; |
| 4306 | |
| 4307 | if (ea == 2) /* extu.l #2, nn */ |
| 4308 | { |
| 4309 | /* Zero-extend from 8-bit to 32-bit. */ |
| 4310 | ea = 0; |
| 4311 | res = (rd & 0xff) + ea; |
| 4312 | goto log32; |
| 4313 | } |
| 4314 | } |
| 4315 | /* Zero-extend from 16-bit to 32-bit. */ |
| 4316 | ea = 0; |
| 4317 | res = (rd & 0xffff) + ea; |
| 4318 | goto log32; |
| 4319 | |
| 4320 | case O (O_NOP, SN): /* nop */ |
| 4321 | goto next; |
| 4322 | |
| 4323 | case O (O_STM, SL): /* stm, store to memory */ |
| 4324 | { |
| 4325 | int nregs, firstreg, i; |
| 4326 | |
| 4327 | nregs = GET_MEMORY_B (pc + 1); |
| 4328 | nregs >>= 4; |
| 4329 | nregs &= 0xf; |
| 4330 | firstreg = code->src.reg; |
| 4331 | firstreg &= 0xf; |
| 4332 | for (i = firstreg; i <= firstreg + nregs; i++) |
| 4333 | { |
| 4334 | h8_set_reg (sd, SP_REGNUM, h8_get_reg (sd, SP_REGNUM) - 4); |
| 4335 | SET_MEMORY_L (h8_get_reg (sd, SP_REGNUM), h8_get_reg (sd, i)); |
| 4336 | } |
| 4337 | } |
| 4338 | goto next; |
| 4339 | |
| 4340 | case O (O_LDM, SL): /* ldm, load from memory */ |
| 4341 | case O (O_RTEL, SN): /* rte/l, ldm plus rte */ |
| 4342 | case O (O_RTSL, SN): /* rts/l, ldm plus rts */ |
| 4343 | { |
| 4344 | int nregs, firstreg, i; |
| 4345 | |
| 4346 | nregs = ((GET_MEMORY_B (pc + 1) >> 4) & 0xf); |
| 4347 | firstreg = code->dst.reg & 0xf; |
| 4348 | for (i = firstreg; i >= firstreg - nregs; i--) |
| 4349 | { |
| 4350 | h8_set_reg (sd, i, GET_MEMORY_L (h8_get_reg (sd, SP_REGNUM))); |
| 4351 | h8_set_reg (sd, SP_REGNUM, h8_get_reg (sd, SP_REGNUM) + 4); |
| 4352 | } |
| 4353 | } |
| 4354 | switch (code->opcode) { |
| 4355 | case O (O_RTEL, SN): |
| 4356 | goto rte; |
| 4357 | case O (O_RTSL, SN): |
| 4358 | goto rts; |
| 4359 | case O (O_LDM, SL): |
| 4360 | goto next; |
| 4361 | default: |
| 4362 | goto illegal; |
| 4363 | } |
| 4364 | |
| 4365 | case O (O_DAA, SB): |
| 4366 | /* Decimal Adjust Addition. This is for BCD arithmetic. */ |
| 4367 | res = GET_B_REG (code->src.reg); /* FIXME fetch? */ |
| 4368 | if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
| 4369 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) |
| 4370 | res = res; /* Value added == 0. */ |
| 4371 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 8) && |
| 4372 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) |
| 4373 | res = res + 0x6; /* Value added == 6. */ |
| 4374 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
| 4375 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) |
| 4376 | res = res + 0x6; /* Value added == 6. */ |
| 4377 | else if (!c && (10 <= (res >> 4) && (res >> 4) <= 15) && |
| 4378 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) |
| 4379 | res = res + 0x60; /* Value added == 60. */ |
| 4380 | else if (!c && (9 <= (res >> 4) && (res >> 4) <= 15) && |
| 4381 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) |
| 4382 | res = res + 0x66; /* Value added == 66. */ |
| 4383 | else if (!c && (10 <= (res >> 4) && (res >> 4) <= 15) && |
| 4384 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) |
| 4385 | res = res + 0x66; /* Value added == 66. */ |
| 4386 | else if ( c && (1 <= (res >> 4) && (res >> 4) <= 2) && |
| 4387 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) |
| 4388 | res = res + 0x60; /* Value added == 60. */ |
| 4389 | else if ( c && (1 <= (res >> 4) && (res >> 4) <= 2) && |
| 4390 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) |
| 4391 | res = res + 0x66; /* Value added == 66. */ |
| 4392 | else if (c && (1 <= (res >> 4) && (res >> 4) <= 3) && |
| 4393 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) |
| 4394 | res = res + 0x66; /* Value added == 66. */ |
| 4395 | |
| 4396 | goto alu8; |
| 4397 | |
| 4398 | case O (O_DAS, SB): |
| 4399 | /* Decimal Adjust Subtraction. This is for BCD arithmetic. */ |
| 4400 | res = GET_B_REG (code->src.reg); /* FIXME fetch, fetch2... */ |
| 4401 | if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
| 4402 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) |
| 4403 | res = res; /* Value added == 0. */ |
| 4404 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 8) && |
| 4405 | h && (6 <= (res & 0xf) && (res & 0xf) <= 15)) |
| 4406 | res = res + 0xfa; /* Value added == 0xfa. */ |
| 4407 | else if ( c && (7 <= (res >> 4) && (res >> 4) <= 15) && |
| 4408 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) |
| 4409 | res = res + 0xa0; /* Value added == 0xa0. */ |
| 4410 | else if (c && (6 <= (res >> 4) && (res >> 4) <= 15) && |
| 4411 | h && (6 <= (res & 0xf) && (res & 0xf) <= 15)) |
| 4412 | res = res + 0x9a; /* Value added == 0x9a. */ |
| 4413 | |
| 4414 | goto alu8; |
| 4415 | |
| 4416 | default: |
| 4417 | illegal: |
| 4418 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); |
| 4419 | goto end; |
| 4420 | |
| 4421 | } |
| 4422 | |
| 4423 | (*sim_callback->printf_filtered) (sim_callback, |
| 4424 | "sim_resume: internal error.\n"); |
| 4425 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); |
| 4426 | goto end; |
| 4427 | |
| 4428 | setc: |
| 4429 | if (code->dst.type == X (OP_CCR, SB) || |
| 4430 | code->dst.type == X (OP_CCR, SW)) |
| 4431 | { |
| 4432 | h8_set_ccr (sd, res); |
| 4433 | GETSR (sd); |
| 4434 | } |
| 4435 | else if (h8300smode && |
| 4436 | (code->dst.type == X (OP_EXR, SB) || |
| 4437 | code->dst.type == X (OP_EXR, SW))) |
| 4438 | { |
| 4439 | h8_set_exr (sd, res); |
| 4440 | if (h8300smode) /* Get exr. */ |
| 4441 | { |
| 4442 | trace = (h8_get_exr (sd) >> 7) & 1; |
| 4443 | intMask = h8_get_exr (sd) & 7; |
| 4444 | } |
| 4445 | } |
| 4446 | else |
| 4447 | goto illegal; |
| 4448 | |
| 4449 | goto next; |
| 4450 | |
| 4451 | condtrue: |
| 4452 | /* When a branch works */ |
| 4453 | if (fetch (sd, &code->src, &res)) |
| 4454 | goto end; |
| 4455 | if (res & 1) /* bad address */ |
| 4456 | goto illegal; |
| 4457 | pc = code->next_pc + res; |
| 4458 | goto end; |
| 4459 | |
| 4460 | /* Set the cond codes from res */ |
| 4461 | bitop: |
| 4462 | |
| 4463 | /* Set the flags after an 8 bit inc/dec operation */ |
| 4464 | just_flags_inc8: |
| 4465 | n = res & 0x80; |
| 4466 | nz = res & 0xff; |
| 4467 | v = (rd & 0x7f) == 0x7f; |
| 4468 | goto next; |
| 4469 | |
| 4470 | /* Set the flags after an 16 bit inc/dec operation */ |
| 4471 | just_flags_inc16: |
| 4472 | n = res & 0x8000; |
| 4473 | nz = res & 0xffff; |
| 4474 | v = (rd & 0x7fff) == 0x7fff; |
| 4475 | goto next; |
| 4476 | |
| 4477 | /* Set the flags after an 32 bit inc/dec operation */ |
| 4478 | just_flags_inc32: |
| 4479 | n = res & 0x80000000; |
| 4480 | nz = res & 0xffffffff; |
| 4481 | v = (rd & 0x7fffffff) == 0x7fffffff; |
| 4482 | goto next; |
| 4483 | |
| 4484 | shift8: |
| 4485 | /* Set flags after an 8 bit shift op, carry,overflow set in insn */ |
| 4486 | n = (rd & 0x80); |
| 4487 | nz = rd & 0xff; |
| 4488 | if (store2 (sd, &code->dst, rd)) |
| 4489 | goto end; |
| 4490 | goto next; |
| 4491 | |
| 4492 | shift16: |
| 4493 | /* Set flags after an 16 bit shift op, carry,overflow set in insn */ |
| 4494 | n = (rd & 0x8000); |
| 4495 | nz = rd & 0xffff; |
| 4496 | if (store2 (sd, &code->dst, rd)) |
| 4497 | goto end; |
| 4498 | goto next; |
| 4499 | |
| 4500 | shift32: |
| 4501 | /* Set flags after an 32 bit shift op, carry,overflow set in insn */ |
| 4502 | n = (rd & 0x80000000); |
| 4503 | nz = rd & 0xffffffff; |
| 4504 | if (store2 (sd, &code->dst, rd)) |
| 4505 | goto end; |
| 4506 | goto next; |
| 4507 | |
| 4508 | log32: |
| 4509 | if (store2 (sd, &code->dst, res)) |
| 4510 | goto end; |
| 4511 | |
| 4512 | just_flags_log32: |
| 4513 | /* flags after a 32bit logical operation */ |
| 4514 | n = res & 0x80000000; |
| 4515 | nz = res & 0xffffffff; |
| 4516 | v = 0; |
| 4517 | goto next; |
| 4518 | |
| 4519 | log16: |
| 4520 | if (store2 (sd, &code->dst, res)) |
| 4521 | goto end; |
| 4522 | |
| 4523 | just_flags_log16: |
| 4524 | /* flags after a 16bit logical operation */ |
| 4525 | n = res & 0x8000; |
| 4526 | nz = res & 0xffff; |
| 4527 | v = 0; |
| 4528 | goto next; |
| 4529 | |
| 4530 | log8: |
| 4531 | if (store2 (sd, &code->dst, res)) |
| 4532 | goto end; |
| 4533 | |
| 4534 | just_flags_log8: |
| 4535 | n = res & 0x80; |
| 4536 | nz = res & 0xff; |
| 4537 | v = 0; |
| 4538 | goto next; |
| 4539 | |
| 4540 | alu8: |
| 4541 | if (store2 (sd, &code->dst, res)) |
| 4542 | goto end; |
| 4543 | |
| 4544 | just_flags_alu8: |
| 4545 | n = res & 0x80; |
| 4546 | nz = res & 0xff; |
| 4547 | c = (res & 0x100); |
| 4548 | switch (code->opcode / 4) |
| 4549 | { |
| 4550 | case O_ADD: |
| 4551 | case O_ADDX: |
| 4552 | v = ((rd & 0x80) == (ea & 0x80) |
| 4553 | && (rd & 0x80) != (res & 0x80)); |
| 4554 | break; |
| 4555 | case O_SUB: |
| 4556 | case O_SUBX: |
| 4557 | case O_CMP: |
| 4558 | v = ((rd & 0x80) != (-ea & 0x80) |
| 4559 | && (rd & 0x80) != (res & 0x80)); |
| 4560 | break; |
| 4561 | case O_NEG: |
| 4562 | v = (rd == 0x80); |
| 4563 | break; |
| 4564 | case O_DAA: |
| 4565 | case O_DAS: |
| 4566 | break; /* No effect on v flag. */ |
| 4567 | } |
| 4568 | goto next; |
| 4569 | |
| 4570 | alu16: |
| 4571 | if (store2 (sd, &code->dst, res)) |
| 4572 | goto end; |
| 4573 | |
| 4574 | just_flags_alu16: |
| 4575 | n = res & 0x8000; |
| 4576 | nz = res & 0xffff; |
| 4577 | c = (res & 0x10000); |
| 4578 | switch (code->opcode / 4) |
| 4579 | { |
| 4580 | case O_ADD: |
| 4581 | case O_ADDX: |
| 4582 | v = ((rd & 0x8000) == (ea & 0x8000) |
| 4583 | && (rd & 0x8000) != (res & 0x8000)); |
| 4584 | break; |
| 4585 | case O_SUB: |
| 4586 | case O_SUBX: |
| 4587 | case O_CMP: |
| 4588 | v = ((rd & 0x8000) != (-ea & 0x8000) |
| 4589 | && (rd & 0x8000) != (res & 0x8000)); |
| 4590 | break; |
| 4591 | case O_NEG: |
| 4592 | v = (rd == 0x8000); |
| 4593 | break; |
| 4594 | } |
| 4595 | goto next; |
| 4596 | |
| 4597 | alu32: |
| 4598 | if (store2 (sd, &code->dst, res)) |
| 4599 | goto end; |
| 4600 | |
| 4601 | just_flags_alu32: |
| 4602 | n = res & 0x80000000; |
| 4603 | nz = res & 0xffffffff; |
| 4604 | switch (code->opcode / 4) |
| 4605 | { |
| 4606 | case O_ADD: |
| 4607 | case O_ADDX: |
| 4608 | v = ((rd & 0x80000000) == (ea & 0x80000000) |
| 4609 | && (rd & 0x80000000) != (res & 0x80000000)); |
| 4610 | c = ((unsigned) res < (unsigned) rd) || |
| 4611 | ((unsigned) res < (unsigned) ea); |
| 4612 | break; |
| 4613 | case O_SUB: |
| 4614 | case O_SUBX: |
| 4615 | case O_CMP: |
| 4616 | v = ((rd & 0x80000000) != (-ea & 0x80000000) |
| 4617 | && (rd & 0x80000000) != (res & 0x80000000)); |
| 4618 | c = (unsigned) rd < (unsigned) -ea; |
| 4619 | break; |
| 4620 | case O_NEG: |
| 4621 | v = (rd == 0x80000000); |
| 4622 | c = res != 0; |
| 4623 | break; |
| 4624 | } |
| 4625 | goto next; |
| 4626 | |
| 4627 | next: |
| 4628 | if ((res = h8_get_delayed_branch (sd)) != 0) |
| 4629 | { |
| 4630 | pc = res; |
| 4631 | h8_set_delayed_branch (sd, 0); |
| 4632 | } |
| 4633 | else |
| 4634 | pc = code->next_pc; |
| 4635 | |
| 4636 | end: |
| 4637 | |
| 4638 | if (--poll_count < 0) |
| 4639 | { |
| 4640 | poll_count = POLL_QUIT_INTERVAL; |
| 4641 | if ((*sim_callback->poll_quit) != NULL |
| 4642 | && (*sim_callback->poll_quit) (sim_callback)) |
| 4643 | sim_engine_set_run_state (sd, sim_stopped, SIGINT); |
| 4644 | } |
| 4645 | sim_engine_get_run_state (sd, &reason, &sigrc); |
| 4646 | } while (reason == sim_running); |
| 4647 | |
| 4648 | h8_set_ticks (sd, h8_get_ticks (sd) + get_now () - tick_start); |
| 4649 | h8_set_cycles (sd, h8_get_cycles (sd) + cycles); |
| 4650 | h8_set_insts (sd, h8_get_insts (sd) + insts); |
| 4651 | h8_set_pc (sd, pc); |
| 4652 | BUILDSR (sd); |
| 4653 | |
| 4654 | if (h8300smode) |
| 4655 | h8_set_exr (sd, (trace<<7) | intMask); |
| 4656 | |
| 4657 | h8_set_mask (sd, oldmask); |
| 4658 | signal (SIGINT, prev); |
| 4659 | } |
| 4660 | |
| 4661 | int |
| 4662 | sim_trace (SIM_DESC sd) |
| 4663 | { |
| 4664 | /* FIXME: Unfinished. */ |
| 4665 | (*sim_callback->printf_filtered) (sim_callback, |
| 4666 | "sim_trace: trace not supported.\n"); |
| 4667 | return 1; /* Done. */ |
| 4668 | } |
| 4669 | |
| 4670 | int |
| 4671 | sim_write (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size) |
| 4672 | { |
| 4673 | int i; |
| 4674 | |
| 4675 | init_pointers (sd); |
| 4676 | if (addr < 0) |
| 4677 | return 0; |
| 4678 | for (i = 0; i < size; i++) |
| 4679 | { |
| 4680 | if (addr < memory_size) |
| 4681 | { |
| 4682 | h8_set_memory (sd, addr + i, buffer[i]); |
| 4683 | h8_set_cache_idx (sd, addr + i, 0); |
| 4684 | } |
| 4685 | else |
| 4686 | { |
| 4687 | h8_set_eightbit (sd, (addr + i) & 0xff, buffer[i]); |
| 4688 | } |
| 4689 | } |
| 4690 | return size; |
| 4691 | } |
| 4692 | |
| 4693 | int |
| 4694 | sim_read (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size) |
| 4695 | { |
| 4696 | init_pointers (sd); |
| 4697 | if (addr < 0) |
| 4698 | return 0; |
| 4699 | if (addr < memory_size) |
| 4700 | memcpy (buffer, h8_get_memory_buf (sd) + addr, size); |
| 4701 | else |
| 4702 | memcpy (buffer, h8_get_eightbit_buf (sd) + (addr & 0xff), size); |
| 4703 | return size; |
| 4704 | } |
| 4705 | |
| 4706 | |
| 4707 | int |
| 4708 | sim_store_register (SIM_DESC sd, int rn, unsigned char *value, int length) |
| 4709 | { |
| 4710 | int longval; |
| 4711 | int shortval; |
| 4712 | int intval; |
| 4713 | longval = (value[0] << 24) | (value[1] << 16) | (value[2] << 8) | value[3]; |
| 4714 | shortval = (value[0] << 8) | (value[1]); |
| 4715 | intval = h8300hmode ? longval : shortval; |
| 4716 | |
| 4717 | init_pointers (sd); |
| 4718 | switch (rn) |
| 4719 | { |
| 4720 | case PC_REGNUM: |
| 4721 | if(h8300_normal_mode) |
| 4722 | h8_set_pc (sd, shortval); /* PC for Normal mode is 2 bytes */ |
| 4723 | else |
| 4724 | h8_set_pc (sd, intval); |
| 4725 | break; |
| 4726 | default: |
| 4727 | (*sim_callback->printf_filtered) (sim_callback, |
| 4728 | "sim_store_register: bad regnum %d.\n", |
| 4729 | rn); |
| 4730 | case R0_REGNUM: |
| 4731 | case R1_REGNUM: |
| 4732 | case R2_REGNUM: |
| 4733 | case R3_REGNUM: |
| 4734 | case R4_REGNUM: |
| 4735 | case R5_REGNUM: |
| 4736 | case R6_REGNUM: |
| 4737 | case R7_REGNUM: |
| 4738 | h8_set_reg (sd, rn, intval); |
| 4739 | break; |
| 4740 | case CCR_REGNUM: |
| 4741 | h8_set_ccr (sd, intval); |
| 4742 | break; |
| 4743 | case EXR_REGNUM: |
| 4744 | h8_set_exr (sd, intval); |
| 4745 | break; |
| 4746 | case SBR_REGNUM: |
| 4747 | h8_set_sbr (sd, intval); |
| 4748 | break; |
| 4749 | case VBR_REGNUM: |
| 4750 | h8_set_vbr (sd, intval); |
| 4751 | break; |
| 4752 | case MACH_REGNUM: |
| 4753 | h8_set_mach (sd, intval); |
| 4754 | break; |
| 4755 | case MACL_REGNUM: |
| 4756 | h8_set_macl (sd, intval); |
| 4757 | break; |
| 4758 | case CYCLE_REGNUM: |
| 4759 | h8_set_cycles (sd, longval); |
| 4760 | break; |
| 4761 | |
| 4762 | case INST_REGNUM: |
| 4763 | h8_set_insts (sd, longval); |
| 4764 | break; |
| 4765 | |
| 4766 | case TICK_REGNUM: |
| 4767 | h8_set_ticks (sd, longval); |
| 4768 | break; |
| 4769 | } |
| 4770 | return -1; |
| 4771 | } |
| 4772 | |
| 4773 | int |
| 4774 | sim_fetch_register (SIM_DESC sd, int rn, unsigned char *buf, int length) |
| 4775 | { |
| 4776 | int v; |
| 4777 | int longreg = 0; |
| 4778 | |
| 4779 | init_pointers (sd); |
| 4780 | |
| 4781 | if (!h8300smode && rn >= EXR_REGNUM) |
| 4782 | rn++; |
| 4783 | switch (rn) |
| 4784 | { |
| 4785 | default: |
| 4786 | (*sim_callback->printf_filtered) (sim_callback, |
| 4787 | "sim_fetch_register: bad regnum %d.\n", |
| 4788 | rn); |
| 4789 | v = 0; |
| 4790 | break; |
| 4791 | case CCR_REGNUM: |
| 4792 | v = h8_get_ccr (sd); |
| 4793 | break; |
| 4794 | case EXR_REGNUM: |
| 4795 | v = h8_get_exr (sd); |
| 4796 | break; |
| 4797 | case PC_REGNUM: |
| 4798 | v = h8_get_pc (sd); |
| 4799 | break; |
| 4800 | case SBR_REGNUM: |
| 4801 | v = h8_get_sbr (sd); |
| 4802 | break; |
| 4803 | case VBR_REGNUM: |
| 4804 | v = h8_get_vbr (sd); |
| 4805 | break; |
| 4806 | case MACH_REGNUM: |
| 4807 | v = h8_get_mach (sd); |
| 4808 | break; |
| 4809 | case MACL_REGNUM: |
| 4810 | v = h8_get_macl (sd); |
| 4811 | break; |
| 4812 | case R0_REGNUM: |
| 4813 | case R1_REGNUM: |
| 4814 | case R2_REGNUM: |
| 4815 | case R3_REGNUM: |
| 4816 | case R4_REGNUM: |
| 4817 | case R5_REGNUM: |
| 4818 | case R6_REGNUM: |
| 4819 | case R7_REGNUM: |
| 4820 | v = h8_get_reg (sd, rn); |
| 4821 | break; |
| 4822 | case CYCLE_REGNUM: |
| 4823 | v = h8_get_cycles (sd); |
| 4824 | longreg = 1; |
| 4825 | break; |
| 4826 | case TICK_REGNUM: |
| 4827 | v = h8_get_ticks (sd); |
| 4828 | longreg = 1; |
| 4829 | break; |
| 4830 | case INST_REGNUM: |
| 4831 | v = h8_get_insts (sd); |
| 4832 | longreg = 1; |
| 4833 | break; |
| 4834 | } |
| 4835 | /* In Normal mode PC is 2 byte, but other registers are 4 byte */ |
| 4836 | if ((h8300hmode || longreg) && !(rn == PC_REGNUM && h8300_normal_mode)) |
| 4837 | { |
| 4838 | buf[0] = v >> 24; |
| 4839 | buf[1] = v >> 16; |
| 4840 | buf[2] = v >> 8; |
| 4841 | buf[3] = v >> 0; |
| 4842 | } |
| 4843 | else |
| 4844 | { |
| 4845 | buf[0] = v >> 8; |
| 4846 | buf[1] = v; |
| 4847 | } |
| 4848 | return -1; |
| 4849 | } |
| 4850 | |
| 4851 | void |
| 4852 | sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) |
| 4853 | { |
| 4854 | sim_engine_get_run_state (sd, reason, sigrc); |
| 4855 | } |
| 4856 | |
| 4857 | /* FIXME: Rename to sim_set_mem_size. */ |
| 4858 | |
| 4859 | void |
| 4860 | sim_size (int n) |
| 4861 | { |
| 4862 | /* Memory size is fixed. */ |
| 4863 | } |
| 4864 | |
| 4865 | static void |
| 4866 | set_simcache_size (SIM_DESC sd, int n) |
| 4867 | { |
| 4868 | if (sd->sim_cache) |
| 4869 | free (sd->sim_cache); |
| 4870 | if (n < 2) |
| 4871 | n = 2; |
| 4872 | sd->sim_cache = (decoded_inst *) malloc (sizeof (decoded_inst) * n); |
| 4873 | memset (sd->sim_cache, 0, sizeof (decoded_inst) * n); |
| 4874 | sd->sim_cache_size = n; |
| 4875 | } |
| 4876 | |
| 4877 | |
| 4878 | void |
| 4879 | sim_info (SIM_DESC sd, int verbose) |
| 4880 | { |
| 4881 | double timetaken = (double) h8_get_ticks (sd) / (double) now_persec (); |
| 4882 | double virttime = h8_get_cycles (sd) / 10.0e6; |
| 4883 | |
| 4884 | (*sim_callback->printf_filtered) (sim_callback, |
| 4885 | "\n\n#instructions executed %10d\n", |
| 4886 | h8_get_insts (sd)); |
| 4887 | (*sim_callback->printf_filtered) (sim_callback, |
| 4888 | "#cycles (v approximate) %10d\n", |
| 4889 | h8_get_cycles (sd)); |
| 4890 | (*sim_callback->printf_filtered) (sim_callback, |
| 4891 | "#real time taken %10.4f\n", |
| 4892 | timetaken); |
| 4893 | (*sim_callback->printf_filtered) (sim_callback, |
| 4894 | "#virtual time taken %10.4f\n", |
| 4895 | virttime); |
| 4896 | if (timetaken != 0.0) |
| 4897 | (*sim_callback->printf_filtered) (sim_callback, |
| 4898 | "#simulation ratio %10.4f\n", |
| 4899 | virttime / timetaken); |
| 4900 | (*sim_callback->printf_filtered) (sim_callback, |
| 4901 | "#compiles %10d\n", |
| 4902 | h8_get_compiles (sd)); |
| 4903 | (*sim_callback->printf_filtered) (sim_callback, |
| 4904 | "#cache size %10d\n", |
| 4905 | sd->sim_cache_size); |
| 4906 | |
| 4907 | #ifdef ADEBUG |
| 4908 | /* This to be conditional on `what' (aka `verbose'), |
| 4909 | however it was never passed as non-zero. */ |
| 4910 | if (1) |
| 4911 | { |
| 4912 | int i; |
| 4913 | for (i = 0; i < O_LAST; i++) |
| 4914 | { |
| 4915 | if (h8_get_stats (sd, i)) |
| 4916 | (*sim_callback->printf_filtered) (sim_callback, "%d: %d\n", |
| 4917 | i, h8_get_stats (sd, i)); |
| 4918 | } |
| 4919 | } |
| 4920 | #endif |
| 4921 | } |
| 4922 | |
| 4923 | /* Indicate whether the cpu is an H8/300 or H8/300H. |
| 4924 | FLAG is non-zero for the H8/300H. */ |
| 4925 | |
| 4926 | void |
| 4927 | set_h8300h (unsigned long machine) |
| 4928 | { |
| 4929 | /* FIXME: Much of the code in sim_load can be moved to sim_open. |
| 4930 | This function being replaced by a sim_open:ARGV configuration |
| 4931 | option. */ |
| 4932 | |
| 4933 | if (machine == bfd_mach_h8300sx || machine == bfd_mach_h8300sxn) |
| 4934 | h8300sxmode = 1; |
| 4935 | |
| 4936 | if (machine == bfd_mach_h8300s || machine == bfd_mach_h8300sn || h8300sxmode) |
| 4937 | h8300smode = 1; |
| 4938 | |
| 4939 | if (machine == bfd_mach_h8300h || machine == bfd_mach_h8300hn || h8300smode) |
| 4940 | h8300hmode = 1; |
| 4941 | |
| 4942 | if(machine == bfd_mach_h8300hn || machine == bfd_mach_h8300sn || machine == bfd_mach_h8300sxn) |
| 4943 | h8300_normal_mode = 1; |
| 4944 | } |
| 4945 | |
| 4946 | /* Cover function of sim_state_free to free the cpu buffers as well. */ |
| 4947 | |
| 4948 | static void |
| 4949 | free_state (SIM_DESC sd) |
| 4950 | { |
| 4951 | if (STATE_MODULES (sd) != NULL) |
| 4952 | sim_module_uninstall (sd); |
| 4953 | |
| 4954 | /* Fixme: free buffers in _sim_cpu. */ |
| 4955 | sim_state_free (sd); |
| 4956 | } |
| 4957 | |
| 4958 | SIM_DESC |
| 4959 | sim_open (SIM_OPEN_KIND kind, |
| 4960 | struct host_callback_struct *callback, |
| 4961 | struct bfd *abfd, |
| 4962 | char **argv) |
| 4963 | { |
| 4964 | SIM_DESC sd; |
| 4965 | sim_cpu *cpu; |
| 4966 | |
| 4967 | sd = sim_state_alloc (kind, callback); |
| 4968 | sd->cpu = sim_cpu_alloc (sd, 0); |
| 4969 | cpu = STATE_CPU (sd, 0); |
| 4970 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
| 4971 | sim_state_initialize (sd, cpu); |
| 4972 | /* sim_cpu object is new, so some initialization is needed. */ |
| 4973 | init_pointers_needed = 1; |
| 4974 | |
| 4975 | /* For compatibility (FIXME: is this right?). */ |
| 4976 | current_alignment = NONSTRICT_ALIGNMENT; |
| 4977 | current_target_byte_order = BIG_ENDIAN; |
| 4978 | |
| 4979 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) |
| 4980 | { |
| 4981 | free_state (sd); |
| 4982 | return 0; |
| 4983 | } |
| 4984 | |
| 4985 | /* getopt will print the error message so we just have to exit if |
| 4986 | this fails. FIXME: Hmmm... in the case of gdb we need getopt |
| 4987 | to call print_filtered. */ |
| 4988 | if (sim_parse_args (sd, argv) != SIM_RC_OK) |
| 4989 | { |
| 4990 | /* Uninstall the modules to avoid memory leaks, |
| 4991 | file descriptor leaks, etc. */ |
| 4992 | free_state (sd); |
| 4993 | return 0; |
| 4994 | } |
| 4995 | |
| 4996 | /* Check for/establish the a reference program image. */ |
| 4997 | if (sim_analyze_program (sd, |
| 4998 | (STATE_PROG_ARGV (sd) != NULL |
| 4999 | ? *STATE_PROG_ARGV (sd) |
| 5000 | : NULL), abfd) != SIM_RC_OK) |
| 5001 | { |
| 5002 | free_state (sd); |
| 5003 | return 0; |
| 5004 | } |
| 5005 | |
| 5006 | /* Establish any remaining configuration options. */ |
| 5007 | if (sim_config (sd) != SIM_RC_OK) |
| 5008 | { |
| 5009 | free_state (sd); |
| 5010 | return 0; |
| 5011 | } |
| 5012 | |
| 5013 | if (sim_post_argv_init (sd) != SIM_RC_OK) |
| 5014 | { |
| 5015 | /* Uninstall the modules to avoid memory leaks, |
| 5016 | file descriptor leaks, etc. */ |
| 5017 | free_state (sd); |
| 5018 | return 0; |
| 5019 | } |
| 5020 | |
| 5021 | /* sim_hw_configure (sd); */ |
| 5022 | |
| 5023 | /* FIXME: Much of the code in sim_load can be moved here. */ |
| 5024 | |
| 5025 | sim_kind = kind; |
| 5026 | myname = argv[0]; |
| 5027 | sim_callback = callback; |
| 5028 | return sd; |
| 5029 | } |
| 5030 | |
| 5031 | void |
| 5032 | sim_close (SIM_DESC sd, int quitting) |
| 5033 | { |
| 5034 | /* Nothing to do. */ |
| 5035 | } |
| 5036 | |
| 5037 | /* Called by gdb to load a program into memory. */ |
| 5038 | |
| 5039 | SIM_RC |
| 5040 | sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty) |
| 5041 | { |
| 5042 | bfd *prog_bfd; |
| 5043 | |
| 5044 | /* FIXME: The code below that sets a specific variant of the H8/300 |
| 5045 | being simulated should be moved to sim_open(). */ |
| 5046 | |
| 5047 | /* See if the file is for the H8/300 or H8/300H. */ |
| 5048 | /* ??? This may not be the most efficient way. The z8k simulator |
| 5049 | does this via a different mechanism (INIT_EXTRA_SYMTAB_INFO). */ |
| 5050 | if (abfd != NULL) |
| 5051 | prog_bfd = abfd; |
| 5052 | else |
| 5053 | prog_bfd = bfd_openr (prog, "coff-h8300"); |
| 5054 | if (prog_bfd != NULL) |
| 5055 | { |
| 5056 | /* Set the cpu type. We ignore failure from bfd_check_format |
| 5057 | and bfd_openr as sim_load_file checks too. */ |
| 5058 | if (bfd_check_format (prog_bfd, bfd_object)) |
| 5059 | { |
| 5060 | set_h8300h (bfd_get_mach (prog_bfd)); |
| 5061 | } |
| 5062 | } |
| 5063 | |
| 5064 | /* If we're using gdb attached to the simulator, then we have to |
| 5065 | reallocate memory for the simulator. |
| 5066 | |
| 5067 | When gdb first starts, it calls fetch_registers (among other |
| 5068 | functions), which in turn calls init_pointers, which allocates |
| 5069 | simulator memory. |
| 5070 | |
| 5071 | The problem is when we do that, we don't know whether we're |
| 5072 | debugging an H8/300 or H8/300H program. |
| 5073 | |
| 5074 | This is the first point at which we can make that determination, |
| 5075 | so we just reallocate memory now; this will also allow us to handle |
| 5076 | switching between H8/300 and H8/300H programs without exiting |
| 5077 | gdb. */ |
| 5078 | |
| 5079 | if (h8300smode && !h8300_normal_mode) |
| 5080 | memory_size = H8300S_MSIZE; |
| 5081 | else if (h8300hmode && !h8300_normal_mode) |
| 5082 | memory_size = H8300H_MSIZE; |
| 5083 | else |
| 5084 | memory_size = H8300_MSIZE; |
| 5085 | |
| 5086 | if (h8_get_memory_buf (sd)) |
| 5087 | free (h8_get_memory_buf (sd)); |
| 5088 | if (h8_get_cache_idx_buf (sd)) |
| 5089 | free (h8_get_cache_idx_buf (sd)); |
| 5090 | if (h8_get_eightbit_buf (sd)) |
| 5091 | free (h8_get_eightbit_buf (sd)); |
| 5092 | |
| 5093 | h8_set_memory_buf (sd, (unsigned char *) |
| 5094 | calloc (sizeof (char), memory_size)); |
| 5095 | h8_set_cache_idx_buf (sd, (unsigned short *) |
| 5096 | calloc (sizeof (short), memory_size)); |
| 5097 | h8_set_eightbit_buf (sd, (unsigned char *) calloc (sizeof (char), 256)); |
| 5098 | |
| 5099 | /* `msize' must be a power of two. */ |
| 5100 | if ((memory_size & (memory_size - 1)) != 0) |
| 5101 | { |
| 5102 | (*sim_callback->printf_filtered) (sim_callback, |
| 5103 | "sim_load: bad memory size.\n"); |
| 5104 | return SIM_RC_FAIL; |
| 5105 | } |
| 5106 | h8_set_mask (sd, memory_size - 1); |
| 5107 | |
| 5108 | if (sim_load_file (sd, myname, sim_callback, prog, prog_bfd, |
| 5109 | sim_kind == SIM_OPEN_DEBUG, |
| 5110 | 0, sim_write) |
| 5111 | == NULL) |
| 5112 | { |
| 5113 | /* Close the bfd if we opened it. */ |
| 5114 | if (abfd == NULL && prog_bfd != NULL) |
| 5115 | bfd_close (prog_bfd); |
| 5116 | return SIM_RC_FAIL; |
| 5117 | } |
| 5118 | |
| 5119 | /* Close the bfd if we opened it. */ |
| 5120 | if (abfd == NULL && prog_bfd != NULL) |
| 5121 | bfd_close (prog_bfd); |
| 5122 | return SIM_RC_OK; |
| 5123 | } |
| 5124 | |
| 5125 | SIM_RC |
| 5126 | sim_create_inferior (SIM_DESC sd, struct bfd *abfd, char **argv, char **env) |
| 5127 | { |
| 5128 | int i = 0; |
| 5129 | int len_arg = 0; |
| 5130 | int no_of_args = 0; |
| 5131 | |
| 5132 | if (abfd != NULL) |
| 5133 | h8_set_pc (sd, bfd_get_start_address (abfd)); |
| 5134 | else |
| 5135 | h8_set_pc (sd, 0); |
| 5136 | |
| 5137 | /* Command Line support. */ |
| 5138 | if (argv != NULL) |
| 5139 | { |
| 5140 | /* Counting the no. of commandline arguments. */ |
| 5141 | for (no_of_args = 0; argv[no_of_args] != NULL; no_of_args++) |
| 5142 | continue; |
| 5143 | |
| 5144 | /* Allocating memory for the argv pointers. */ |
| 5145 | h8_set_command_line (sd, (char **) malloc ((sizeof (char *)) |
| 5146 | * (no_of_args + 1))); |
| 5147 | |
| 5148 | for (i = 0; i < no_of_args; i++) |
| 5149 | { |
| 5150 | /* Copying the argument string. */ |
| 5151 | h8_set_cmdline_arg (sd, i, (char *) strdup (argv[i])); |
| 5152 | } |
| 5153 | h8_set_cmdline_arg (sd, i, NULL); |
| 5154 | } |
| 5155 | |
| 5156 | return SIM_RC_OK; |
| 5157 | } |
| 5158 | |
| 5159 | void |
| 5160 | sim_do_command (SIM_DESC sd, char *cmd) |
| 5161 | { |
| 5162 | (*sim_callback->printf_filtered) (sim_callback, |
| 5163 | "This simulator does not accept any commands.\n"); |
| 5164 | } |
| 5165 | |
| 5166 | void |
| 5167 | sim_set_callbacks (struct host_callback_struct *ptr) |
| 5168 | { |
| 5169 | sim_callback = ptr; |
| 5170 | } |