drivers/bios_emulator/x86emu/ops2.c

   1 /****************************************************************************
   2 *
   3 *                       Realmode X86 Emulator Library
   4 *
   5 *  Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
   6 *  Jason Jin <Jason.jin@freescale.com>
   7 *
   8 *               Copyright (C) 1991-2004 SciTech Software, Inc.
   9 *                    Copyright (C) David Mosberger-Tang
  10 *                      Copyright (C) 1999 Egbert Eich
  11 *
  12 *  ========================================================================
  13 *
  14 *  Permission to use, copy, modify, distribute, and sell this software and
  15 *  its documentation for any purpose is hereby granted without fee,
  16 *  provided that the above copyright notice appear in all copies and that
  17 *  both that copyright notice and this permission notice appear in
  18 *  supporting documentation, and that the name of the authors not be used
  19 *  in advertising or publicity pertaining to distribution of the software
  20 *  without specific, written prior permission.  The authors makes no
  21 *  representations about the suitability of this software for any purpose.
  22 *  It is provided "as is" without express or implied warranty.
  23 *
  24 *  THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  25 *  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  26 *  EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  27 *  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
  28 *  USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
  29 *  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  30 *  PERFORMANCE OF THIS SOFTWARE.
  31 *
  32 *  ========================================================================
  33 *
  34 * Language:     ANSI C
  35 * Environment:  Any
  36 * Developer:    Kendall Bennett
  37 *
  38 * Description:  This file includes subroutines to implement the decoding
  39 *               and emulation of all the x86 extended two-byte processor
  40 *               instructions.
  41 *
  42 *               Jason port this file to u-boot. Put the function pointer into
  43 *               got2 sector.
  44 *
  45 ****************************************************************************/
  46
  47 #include <common.h>
  48
  49 #if defined(CONFIG_BIOSEMU)
  50
  51 #include "x86emu/x86emui.h"
  52
  53 /*----------------------------- Implementation ----------------------------*/
  54
  55 /****************************************************************************
  56 PARAMETERS:
  57 op1 - Instruction op code
  58
  59 REMARKS:
  60 Handles illegal opcodes.
  61 ****************************************************************************/
  62 void x86emuOp2_illegal_op(
  63     u8 op2)
  64 {
  65     START_OF_INSTR();
  66     DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
  67     TRACE_REGS();
  68     printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n",
  69         M.x86.R_CS, M.x86.R_IP-2,op2);
  70     HALT_SYS();
  71     END_OF_INSTR();
  72 }
  73
  74 #define xorl(a,b)   ((a) && !(b)) || (!(a) && (b))
  75
  76 /****************************************************************************
  77 REMARKS:
  78 Handles opcode 0x0f,0x80-0x8F
  79 ****************************************************************************/
  80 int x86emu_check_jump_condition(u8 op)
  81 {
  82     switch (op) {
  83       case 0x0:
  84         DECODE_PRINTF("JO\t");
  85         return ACCESS_FLAG(F_OF);
  86       case 0x1:
  87         DECODE_PRINTF("JNO\t");
  88         return !ACCESS_FLAG(F_OF);
  89         break;
  90       case 0x2:
  91         DECODE_PRINTF("JB\t");
  92         return ACCESS_FLAG(F_CF);
  93         break;
  94       case 0x3:
  95         DECODE_PRINTF("JNB\t");
  96         return !ACCESS_FLAG(F_CF);
  97         break;
  98       case 0x4:
  99         DECODE_PRINTF("JZ\t");
 100         return ACCESS_FLAG(F_ZF);
 101         break;
 102       case 0x5:
 103         DECODE_PRINTF("JNZ\t");
 104         return !ACCESS_FLAG(F_ZF);
 105         break;
 106       case 0x6:
 107         DECODE_PRINTF("JBE\t");
 108         return ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
 109         break;
 110       case 0x7:
 111         DECODE_PRINTF("JNBE\t");
 112         return !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
 113         break;
 114       case 0x8:
 115         DECODE_PRINTF("JS\t");
 116         return ACCESS_FLAG(F_SF);
 117         break;
 118       case 0x9:
 119         DECODE_PRINTF("JNS\t");
 120         return !ACCESS_FLAG(F_SF);
 121         break;
 122       case 0xa:
 123         DECODE_PRINTF("JP\t");
 124         return ACCESS_FLAG(F_PF);
 125         break;
 126       case 0xb:
 127         DECODE_PRINTF("JNP\t");
 128         return !ACCESS_FLAG(F_PF);
 129         break;
 130       case 0xc:
 131         DECODE_PRINTF("JL\t");
 132         return xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
 133         break;
 134       case 0xd:
 135         DECODE_PRINTF("JNL\t");
 136         return !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
 137         break;
 138       case 0xe:
 139         DECODE_PRINTF("JLE\t");
 140         return (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
 141                 ACCESS_FLAG(F_ZF));
 142         break;
 143       default:
 144         DECODE_PRINTF("JNLE\t");
 145         return !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
 146                  ACCESS_FLAG(F_ZF));
 147     }
 148 }
 149
 150 void x86emuOp2_long_jump(u8 op2)
 151 {
 152     s32 target;
 153     int cond;
 154
 155     /* conditional jump to word offset. */
 156     START_OF_INSTR();
 157     cond = x86emu_check_jump_condition(op2 & 0xF);
 158     target = (s16) fetch_word_imm();
 159     target += (s16) M.x86.R_IP;
 160     DECODE_PRINTF2("%04x\n", target);
 161     TRACE_AND_STEP();
 162     if (cond)
 163         M.x86.R_IP = (u16)target;
 164     DECODE_CLEAR_SEGOVR();
 165     END_OF_INSTR();
 166 }
 167
 168 /****************************************************************************
 169 REMARKS:
 170 Handles opcode 0x0f,0x90-0x9F
 171 ****************************************************************************/
 172 void x86emuOp2_set_byte(u8 op2)
 173 {
 174     int mod, rl, rh;
 175     uint destoffset;
 176     u8  *destreg;
 177     char *name = 0;
 178     int cond = 0;
 179
 180     START_OF_INSTR();
 181     switch (op2) {
 182       case 0x90:
 183         name = "SETO\t";
 184         cond =  ACCESS_FLAG(F_OF);
 185         break;
 186       case 0x91:
 187         name = "SETNO\t";
 188         cond = !ACCESS_FLAG(F_OF);
 189         break;
 190       case 0x92:
 191         name = "SETB\t";
 192         cond = ACCESS_FLAG(F_CF);
 193         break;
 194       case 0x93:
 195         name = "SETNB\t";
 196         cond = !ACCESS_FLAG(F_CF);
 197         break;
 198       case 0x94:
 199         name = "SETZ\t";
 200         cond = ACCESS_FLAG(F_ZF);
 201         break;
 202       case 0x95:
 203         name = "SETNZ\t";
 204         cond = !ACCESS_FLAG(F_ZF);
 205         break;
 206       case 0x96:
 207         name = "SETBE\t";
 208         cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
 209         break;
 210       case 0x97:
 211         name = "SETNBE\t";
 212         cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
 213         break;
 214       case 0x98:
 215         name = "SETS\t";
 216         cond = ACCESS_FLAG(F_SF);
 217         break;
 218       case 0x99:
 219         name = "SETNS\t";
 220         cond = !ACCESS_FLAG(F_SF);
 221         break;
 222       case 0x9a:
 223         name = "SETP\t";
 224         cond = ACCESS_FLAG(F_PF);
 225         break;
 226       case 0x9b:
 227         name = "SETNP\t";
 228         cond = !ACCESS_FLAG(F_PF);
 229         break;
 230       case 0x9c:
 231         name = "SETL\t";
 232         cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
 233         break;
 234       case 0x9d:
 235         name = "SETNL\t";
 236         cond = !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
 237         break;
 238       case 0x9e:
 239         name = "SETLE\t";
 240         cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
 241                 ACCESS_FLAG(F_ZF));
 242         break;
 243       case 0x9f:
 244         name = "SETNLE\t";
 245         cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
 246                  ACCESS_FLAG(F_ZF));
 247         break;
 248     }
 249     DECODE_PRINTF(name);
 250     FETCH_DECODE_MODRM(mod, rh, rl);
 251     if (mod < 3) {
 252         destoffset = decode_rmXX_address(mod, rl);
 253         TRACE_AND_STEP();
 254         store_data_byte(destoffset, cond ? 0x01 : 0x00);
 255     } else {                     /* register to register */
 256         destreg = DECODE_RM_BYTE_REGISTER(rl);
 257         TRACE_AND_STEP();
 258         *destreg = cond ? 0x01 : 0x00;
 259     }
 260     DECODE_CLEAR_SEGOVR();
 261     END_OF_INSTR();
 262 }
 263
 264 /****************************************************************************
 265 REMARKS:
 266 Handles opcode 0x0f,0xa0
 267 ****************************************************************************/
 268 void x86emuOp2_push_FS(u8 X86EMU_UNUSED(op2))
 269 {
 270     START_OF_INSTR();
 271     DECODE_PRINTF("PUSH\tFS\n");
 272     TRACE_AND_STEP();
 273     push_word(M.x86.R_FS);
 274     DECODE_CLEAR_SEGOVR();
 275     END_OF_INSTR();
 276 }
 277
 278 /****************************************************************************
 279 REMARKS:
 280 Handles opcode 0x0f,0xa1
 281 ****************************************************************************/
 282 void x86emuOp2_pop_FS(u8 X86EMU_UNUSED(op2))
 283 {
 284     START_OF_INSTR();
 285     DECODE_PRINTF("POP\tFS\n");
 286     TRACE_AND_STEP();
 287     M.x86.R_FS = pop_word();
 288     DECODE_CLEAR_SEGOVR();
 289     END_OF_INSTR();
 290 }
 291
 292 /****************************************************************************
 293 REMARKS:
 294 Handles opcode 0x0f,0xa3
 295 ****************************************************************************/
 296 void x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2))
 297 {
 298     int mod, rl, rh;
 299     uint srcoffset;
 300     int bit,disp;
 301
 302     START_OF_INSTR();
 303     DECODE_PRINTF("BT\t");
 304     FETCH_DECODE_MODRM(mod, rh, rl);
 305     if (mod < 3) {
 306         srcoffset = decode_rmXX_address(mod, rl);
 307         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 308             u32 srcval;
 309             u32 *shiftreg;
 310
 311             DECODE_PRINTF(",");
 312             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 313             TRACE_AND_STEP();
 314             bit = *shiftreg & 0x1F;
 315             disp = (s16)*shiftreg >> 5;
 316             srcval = fetch_data_long(srcoffset+disp);
 317             CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
 318         } else {
 319             u16 srcval;
 320             u16 *shiftreg;
 321
 322             DECODE_PRINTF(",");
 323             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 324             TRACE_AND_STEP();
 325             bit = *shiftreg & 0xF;
 326             disp = (s16)*shiftreg >> 4;
 327             srcval = fetch_data_word(srcoffset+disp);
 328             CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
 329         }
 330     } else {                     /* register to register */
 331         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 332             u32 *srcreg,*shiftreg;
 333
 334             srcreg = DECODE_RM_LONG_REGISTER(rl);
 335             DECODE_PRINTF(",");
 336             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 337             TRACE_AND_STEP();
 338             bit = *shiftreg & 0x1F;
 339             CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF);
 340         } else {
 341             u16 *srcreg,*shiftreg;
 342
 343             srcreg = DECODE_RM_WORD_REGISTER(rl);
 344             DECODE_PRINTF(",");
 345             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 346             TRACE_AND_STEP();
 347             bit = *shiftreg & 0xF;
 348             CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF);
 349         }
 350     }
 351     DECODE_CLEAR_SEGOVR();
 352     END_OF_INSTR();
 353 }
 354
 355 /****************************************************************************
 356 REMARKS:
 357 Handles opcode 0x0f,0xa4
 358 ****************************************************************************/
 359 void x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2))
 360 {
 361     int mod, rl, rh;
 362     uint destoffset;
 363     u8 shift;
 364
 365     START_OF_INSTR();
 366     DECODE_PRINTF("SHLD\t");
 367     FETCH_DECODE_MODRM(mod, rh, rl);
 368     if (mod < 3) {
 369         destoffset = decode_rmXX_address(mod, rl);
 370         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 371             u32 destval;
 372             u32 *shiftreg;
 373
 374             DECODE_PRINTF(",");
 375             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 376             DECODE_PRINTF(",");
 377             shift = fetch_byte_imm();
 378             DECODE_PRINTF2("%d\n", shift);
 379             TRACE_AND_STEP();
 380             destval = fetch_data_long(destoffset);
 381             destval = shld_long(destval,*shiftreg,shift);
 382             store_data_long(destoffset, destval);
 383         } else {
 384             u16 destval;
 385             u16 *shiftreg;
 386
 387             DECODE_PRINTF(",");
 388             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 389             DECODE_PRINTF(",");
 390             shift = fetch_byte_imm();
 391             DECODE_PRINTF2("%d\n", shift);
 392             TRACE_AND_STEP();
 393             destval = fetch_data_word(destoffset);
 394             destval = shld_word(destval,*shiftreg,shift);
 395             store_data_word(destoffset, destval);
 396         }
 397     } else {                     /* register to register */
 398         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 399             u32 *destreg,*shiftreg;
 400
 401             destreg = DECODE_RM_LONG_REGISTER(rl);
 402             DECODE_PRINTF(",");
 403             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 404             DECODE_PRINTF(",");
 405             shift = fetch_byte_imm();
 406             DECODE_PRINTF2("%d\n", shift);
 407             TRACE_AND_STEP();
 408             *destreg = shld_long(*destreg,*shiftreg,shift);
 409         } else {
 410             u16 *destreg,*shiftreg;
 411
 412             destreg = DECODE_RM_WORD_REGISTER(rl);
 413             DECODE_PRINTF(",");
 414             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 415             DECODE_PRINTF(",");
 416             shift = fetch_byte_imm();
 417             DECODE_PRINTF2("%d\n", shift);
 418             TRACE_AND_STEP();
 419             *destreg = shld_word(*destreg,*shiftreg,shift);
 420         }
 421     }
 422     DECODE_CLEAR_SEGOVR();
 423     END_OF_INSTR();
 424 }
 425
 426 /****************************************************************************
 427 REMARKS:
 428 Handles opcode 0x0f,0xa5
 429 ****************************************************************************/
 430 void x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2))
 431 {
 432     int mod, rl, rh;
 433     uint destoffset;
 434
 435     START_OF_INSTR();
 436     DECODE_PRINTF("SHLD\t");
 437     FETCH_DECODE_MODRM(mod, rh, rl);
 438     if (mod < 3) {
 439         destoffset = decode_rmXX_address(mod, rl);
 440         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 441             u32 destval;
 442             u32 *shiftreg;
 443
 444             DECODE_PRINTF(",");
 445             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 446             DECODE_PRINTF(",CL\n");
 447             TRACE_AND_STEP();
 448             destval = fetch_data_long(destoffset);
 449             destval = shld_long(destval,*shiftreg,M.x86.R_CL);
 450             store_data_long(destoffset, destval);
 451         } else {
 452             u16 destval;
 453             u16 *shiftreg;
 454
 455             DECODE_PRINTF(",");
 456             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 457             DECODE_PRINTF(",CL\n");
 458             TRACE_AND_STEP();
 459             destval = fetch_data_word(destoffset);
 460             destval = shld_word(destval,*shiftreg,M.x86.R_CL);
 461             store_data_word(destoffset, destval);
 462         }
 463     } else {                     /* register to register */
 464         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 465             u32 *destreg,*shiftreg;
 466
 467             destreg = DECODE_RM_LONG_REGISTER(rl);
 468             DECODE_PRINTF(",");
 469             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 470             DECODE_PRINTF(",CL\n");
 471             TRACE_AND_STEP();
 472             *destreg = shld_long(*destreg,*shiftreg,M.x86.R_CL);
 473         } else {
 474             u16 *destreg,*shiftreg;
 475
 476             destreg = DECODE_RM_WORD_REGISTER(rl);
 477             DECODE_PRINTF(",");
 478             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 479             DECODE_PRINTF(",CL\n");
 480             TRACE_AND_STEP();
 481             *destreg = shld_word(*destreg,*shiftreg,M.x86.R_CL);
 482         }
 483     }
 484     DECODE_CLEAR_SEGOVR();
 485     END_OF_INSTR();
 486 }
 487
 488 /****************************************************************************
 489 REMARKS:
 490 Handles opcode 0x0f,0xa8
 491 ****************************************************************************/
 492 void x86emuOp2_push_GS(u8 X86EMU_UNUSED(op2))
 493 {
 494     START_OF_INSTR();
 495     DECODE_PRINTF("PUSH\tGS\n");
 496     TRACE_AND_STEP();
 497     push_word(M.x86.R_GS);
 498     DECODE_CLEAR_SEGOVR();
 499     END_OF_INSTR();
 500 }
 501
 502 /****************************************************************************
 503 REMARKS:
 504 Handles opcode 0x0f,0xa9
 505 ****************************************************************************/
 506 void x86emuOp2_pop_GS(u8 X86EMU_UNUSED(op2))
 507 {
 508     START_OF_INSTR();
 509     DECODE_PRINTF("POP\tGS\n");
 510     TRACE_AND_STEP();
 511     M.x86.R_GS = pop_word();
 512     DECODE_CLEAR_SEGOVR();
 513     END_OF_INSTR();
 514 }
 515
 516 /****************************************************************************
 517 REMARKS:
 518 Handles opcode 0x0f,0xaa
 519 ****************************************************************************/
 520 void x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2))
 521 {
 522     int mod, rl, rh;
 523     uint srcoffset;
 524     int bit,disp;
 525
 526     START_OF_INSTR();
 527     DECODE_PRINTF("BTS\t");
 528     FETCH_DECODE_MODRM(mod, rh, rl);
 529     if (mod < 3) {
 530         srcoffset = decode_rmXX_address(mod, rl);
 531         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 532             u32 srcval,mask;
 533             u32 *shiftreg;
 534
 535             DECODE_PRINTF(",");
 536             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 537             TRACE_AND_STEP();
 538             bit = *shiftreg & 0x1F;
 539             disp = (s16)*shiftreg >> 5;
 540             srcval = fetch_data_long(srcoffset+disp);
 541             mask = (0x1 << bit);
 542             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
 543             store_data_long(srcoffset+disp, srcval | mask);
 544         } else {
 545             u16 srcval,mask;
 546             u16 *shiftreg;
 547
 548             DECODE_PRINTF(",");
 549             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 550             TRACE_AND_STEP();
 551             bit = *shiftreg & 0xF;
 552             disp = (s16)*shiftreg >> 4;
 553             srcval = fetch_data_word(srcoffset+disp);
 554             mask = (u16)(0x1 << bit);
 555             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
 556             store_data_word(srcoffset+disp, srcval | mask);
 557         }
 558     } else {                     /* register to register */
 559         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 560             u32 *srcreg,*shiftreg;
 561             u32 mask;
 562
 563             srcreg = DECODE_RM_LONG_REGISTER(rl);
 564             DECODE_PRINTF(",");
 565             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 566             TRACE_AND_STEP();
 567             bit = *shiftreg & 0x1F;
 568             mask = (0x1 << bit);
 569             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
 570             *srcreg |= mask;
 571         } else {
 572             u16 *srcreg,*shiftreg;
 573             u16 mask;
 574
 575             srcreg = DECODE_RM_WORD_REGISTER(rl);
 576             DECODE_PRINTF(",");
 577             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 578             TRACE_AND_STEP();
 579             bit = *shiftreg & 0xF;
 580             mask = (u16)(0x1 << bit);
 581             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
 582             *srcreg |= mask;
 583         }
 584     }
 585     DECODE_CLEAR_SEGOVR();
 586     END_OF_INSTR();
 587 }
 588
 589 /****************************************************************************
 590 REMARKS:
 591 Handles opcode 0x0f,0xac
 592 ****************************************************************************/
 593 void x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2))
 594 {
 595     int mod, rl, rh;
 596     uint destoffset;
 597     u8 shift;
 598
 599     START_OF_INSTR();
 600     DECODE_PRINTF("SHLD\t");
 601     FETCH_DECODE_MODRM(mod, rh, rl);
 602     if (mod < 3) {
 603         destoffset = decode_rmXX_address(mod, rl);
 604         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 605             u32 destval;
 606             u32 *shiftreg;
 607
 608             DECODE_PRINTF(",");
 609             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 610             DECODE_PRINTF(",");
 611             shift = fetch_byte_imm();
 612             DECODE_PRINTF2("%d\n", shift);
 613             TRACE_AND_STEP();
 614             destval = fetch_data_long(destoffset);
 615             destval = shrd_long(destval,*shiftreg,shift);
 616             store_data_long(destoffset, destval);
 617         } else {
 618             u16 destval;
 619             u16 *shiftreg;
 620
 621             DECODE_PRINTF(",");
 622             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 623             DECODE_PRINTF(",");
 624             shift = fetch_byte_imm();
 625             DECODE_PRINTF2("%d\n", shift);
 626             TRACE_AND_STEP();
 627             destval = fetch_data_word(destoffset);
 628             destval = shrd_word(destval,*shiftreg,shift);
 629             store_data_word(destoffset, destval);
 630         }
 631     } else {                     /* register to register */
 632         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 633             u32 *destreg,*shiftreg;
 634
 635             destreg = DECODE_RM_LONG_REGISTER(rl);
 636             DECODE_PRINTF(",");
 637             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 638             DECODE_PRINTF(",");
 639             shift = fetch_byte_imm();
 640             DECODE_PRINTF2("%d\n", shift);
 641             TRACE_AND_STEP();
 642             *destreg = shrd_long(*destreg,*shiftreg,shift);
 643         } else {
 644             u16 *destreg,*shiftreg;
 645
 646             destreg = DECODE_RM_WORD_REGISTER(rl);
 647             DECODE_PRINTF(",");
 648             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 649             DECODE_PRINTF(",");
 650             shift = fetch_byte_imm();
 651             DECODE_PRINTF2("%d\n", shift);
 652             TRACE_AND_STEP();
 653             *destreg = shrd_word(*destreg,*shiftreg,shift);
 654         }
 655     }
 656     DECODE_CLEAR_SEGOVR();
 657     END_OF_INSTR();
 658 }
 659
 660 /****************************************************************************
 661 REMARKS:
 662 Handles opcode 0x0f,0xad
 663 ****************************************************************************/
 664 void x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2))
 665 {
 666     int mod, rl, rh;
 667     uint destoffset;
 668
 669     START_OF_INSTR();
 670     DECODE_PRINTF("SHLD\t");
 671     FETCH_DECODE_MODRM(mod, rh, rl);
 672     if (mod < 3) {
 673         destoffset = decode_rmXX_address(mod, rl);
 674         DECODE_PRINTF(",");
 675         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 676             u32 destval;
 677             u32 *shiftreg;
 678
 679             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 680             DECODE_PRINTF(",CL\n");
 681             TRACE_AND_STEP();
 682             destval = fetch_data_long(destoffset);
 683             destval = shrd_long(destval,*shiftreg,M.x86.R_CL);
 684             store_data_long(destoffset, destval);
 685         } else {
 686             u16 destval;
 687             u16 *shiftreg;
 688
 689             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 690             DECODE_PRINTF(",CL\n");
 691             TRACE_AND_STEP();
 692             destval = fetch_data_word(destoffset);
 693             destval = shrd_word(destval,*shiftreg,M.x86.R_CL);
 694             store_data_word(destoffset, destval);
 695         }
 696     } else {                     /* register to register */
 697         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 698             u32 *destreg,*shiftreg;
 699
 700             destreg = DECODE_RM_LONG_REGISTER(rl);
 701             DECODE_PRINTF(",");
 702             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 703             DECODE_PRINTF(",CL\n");
 704             TRACE_AND_STEP();
 705             *destreg = shrd_long(*destreg,*shiftreg,M.x86.R_CL);
 706         } else {
 707             u16 *destreg,*shiftreg;
 708
 709             destreg = DECODE_RM_WORD_REGISTER(rl);
 710             DECODE_PRINTF(",");
 711             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 712             DECODE_PRINTF(",CL\n");
 713             TRACE_AND_STEP();
 714             *destreg = shrd_word(*destreg,*shiftreg,M.x86.R_CL);
 715         }
 716     }
 717     DECODE_CLEAR_SEGOVR();
 718     END_OF_INSTR();
 719 }
 720
 721 /****************************************************************************
 722 REMARKS:
 723 Handles opcode 0x0f,0xaf
 724 ****************************************************************************/
 725 void x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2))
 726 {
 727     int mod, rl, rh;
 728     uint srcoffset;
 729
 730     START_OF_INSTR();
 731     DECODE_PRINTF("IMUL\t");
 732     FETCH_DECODE_MODRM(mod, rh, rl);
 733     if (mod < 3) {
 734         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 735             u32 *destreg;
 736             u32 srcval;
 737             u32 res_lo,res_hi;
 738
 739             destreg = DECODE_RM_LONG_REGISTER(rh);
 740             DECODE_PRINTF(",");
 741             srcoffset = decode_rmXX_address(mod, rl);
 742             srcval = fetch_data_long(srcoffset);
 743             TRACE_AND_STEP();
 744             imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval);
 745             if (res_hi != 0) {
 746                 SET_FLAG(F_CF);
 747                 SET_FLAG(F_OF);
 748             } else {
 749                 CLEAR_FLAG(F_CF);
 750                 CLEAR_FLAG(F_OF);
 751             }
 752             *destreg = (u32)res_lo;
 753         } else {
 754             u16 *destreg;
 755             u16 srcval;
 756             u32 res;
 757
 758             destreg = DECODE_RM_WORD_REGISTER(rh);
 759             DECODE_PRINTF(",");
 760             srcoffset = decode_rmXX_address(mod, rl);
 761             srcval = fetch_data_word(srcoffset);
 762             TRACE_AND_STEP();
 763             res = (s16)*destreg * (s16)srcval;
 764             if (res > 0xFFFF) {
 765                 SET_FLAG(F_CF);
 766                 SET_FLAG(F_OF);
 767             } else {
 768                 CLEAR_FLAG(F_CF);
 769                 CLEAR_FLAG(F_OF);
 770             }
 771             *destreg = (u16)res;
 772         }
 773     } else {                     /* register to register */
 774         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 775             u32 *destreg,*srcreg;
 776             u32 res_lo,res_hi;
 777
 778             destreg = DECODE_RM_LONG_REGISTER(rh);
 779             DECODE_PRINTF(",");
 780             srcreg = DECODE_RM_LONG_REGISTER(rl);
 781             TRACE_AND_STEP();
 782             imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)*srcreg);
 783             if (res_hi != 0) {
 784                 SET_FLAG(F_CF);
 785                 SET_FLAG(F_OF);
 786             } else {
 787                 CLEAR_FLAG(F_CF);
 788                 CLEAR_FLAG(F_OF);
 789             }
 790             *destreg = (u32)res_lo;
 791         } else {
 792             u16 *destreg,*srcreg;
 793             u32 res;
 794
 795             destreg = DECODE_RM_WORD_REGISTER(rh);
 796             DECODE_PRINTF(",");
 797             srcreg = DECODE_RM_WORD_REGISTER(rl);
 798             res = (s16)*destreg * (s16)*srcreg;
 799             if (res > 0xFFFF) {
 800                 SET_FLAG(F_CF);
 801                 SET_FLAG(F_OF);
 802             } else {
 803                 CLEAR_FLAG(F_CF);
 804                 CLEAR_FLAG(F_OF);
 805             }
 806             *destreg = (u16)res;
 807         }
 808     }
 809     DECODE_CLEAR_SEGOVR();
 810     END_OF_INSTR();
 811 }
 812
 813 /****************************************************************************
 814 REMARKS:
 815 Handles opcode 0x0f,0xb2
 816 ****************************************************************************/
 817 void x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2))
 818 {
 819     int mod, rh, rl;
 820     u16 *dstreg;
 821     uint srcoffset;
 822
 823     START_OF_INSTR();
 824     DECODE_PRINTF("LSS\t");
 825     FETCH_DECODE_MODRM(mod, rh, rl);
 826     if (mod < 3) {
 827         dstreg = DECODE_RM_WORD_REGISTER(rh);
 828         DECODE_PRINTF(",");
 829         srcoffset = decode_rmXX_address(mod, rl);
 830         DECODE_PRINTF("\n");
 831         TRACE_AND_STEP();
 832         *dstreg = fetch_data_word(srcoffset);
 833         M.x86.R_SS = fetch_data_word(srcoffset + 2);
 834     } else {                     /* register to register */
 835         /* UNDEFINED! */
 836         TRACE_AND_STEP();
 837     }
 838     DECODE_CLEAR_SEGOVR();
 839     END_OF_INSTR();
 840 }
 841
 842 /****************************************************************************
 843 REMARKS:
 844 Handles opcode 0x0f,0xb3
 845 ****************************************************************************/
 846 void x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2))
 847 {
 848     int mod, rl, rh;
 849     uint srcoffset;
 850     int bit,disp;
 851
 852     START_OF_INSTR();
 853     DECODE_PRINTF("BTR\t");
 854     FETCH_DECODE_MODRM(mod, rh, rl);
 855     if (mod < 3) {
 856         srcoffset = decode_rmXX_address(mod, rl);
 857         DECODE_PRINTF(",");
 858         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 859             u32 srcval,mask;
 860             u32 *shiftreg;
 861
 862             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 863             TRACE_AND_STEP();
 864             bit = *shiftreg & 0x1F;
 865             disp = (s16)*shiftreg >> 5;
 866             srcval = fetch_data_long(srcoffset+disp);
 867             mask = (0x1 << bit);
 868             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
 869             store_data_long(srcoffset+disp, srcval & ~mask);
 870         } else {
 871             u16 srcval,mask;
 872             u16 *shiftreg;
 873
 874             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 875             TRACE_AND_STEP();
 876             bit = *shiftreg & 0xF;
 877             disp = (s16)*shiftreg >> 4;
 878             srcval = fetch_data_word(srcoffset+disp);
 879             mask = (u16)(0x1 << bit);
 880             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
 881             store_data_word(srcoffset+disp, (u16)(srcval & ~mask));
 882         }
 883     } else {                     /* register to register */
 884         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 885             u32 *srcreg,*shiftreg;
 886             u32 mask;
 887
 888             srcreg = DECODE_RM_LONG_REGISTER(rl);
 889             DECODE_PRINTF(",");
 890             shiftreg = DECODE_RM_LONG_REGISTER(rh);
 891             TRACE_AND_STEP();
 892             bit = *shiftreg & 0x1F;
 893             mask = (0x1 << bit);
 894             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
 895             *srcreg &= ~mask;
 896         } else {
 897             u16 *srcreg,*shiftreg;
 898             u16 mask;
 899
 900             srcreg = DECODE_RM_WORD_REGISTER(rl);
 901             DECODE_PRINTF(",");
 902             shiftreg = DECODE_RM_WORD_REGISTER(rh);
 903             TRACE_AND_STEP();
 904             bit = *shiftreg & 0xF;
 905             mask = (u16)(0x1 << bit);
 906             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
 907             *srcreg &= ~mask;
 908         }
 909     }
 910     DECODE_CLEAR_SEGOVR();
 911     END_OF_INSTR();
 912 }
 913
 914 /****************************************************************************
 915 REMARKS:
 916 Handles opcode 0x0f,0xb4
 917 ****************************************************************************/
 918 void x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2))
 919 {
 920     int mod, rh, rl;
 921     u16 *dstreg;
 922     uint srcoffset;
 923
 924     START_OF_INSTR();
 925     DECODE_PRINTF("LFS\t");
 926     FETCH_DECODE_MODRM(mod, rh, rl);
 927     if (mod < 3) {
 928         dstreg = DECODE_RM_WORD_REGISTER(rh);
 929         DECODE_PRINTF(",");
 930         srcoffset = decode_rmXX_address(mod, rl);
 931         DECODE_PRINTF("\n");
 932         TRACE_AND_STEP();
 933         *dstreg = fetch_data_word(srcoffset);
 934         M.x86.R_FS = fetch_data_word(srcoffset + 2);
 935     } else {                     /* register to register */
 936         /* UNDEFINED! */
 937         TRACE_AND_STEP();
 938     }
 939     DECODE_CLEAR_SEGOVR();
 940     END_OF_INSTR();
 941 }
 942
 943 /****************************************************************************
 944 REMARKS:
 945 Handles opcode 0x0f,0xb5
 946 ****************************************************************************/
 947 void x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2))
 948 {
 949     int mod, rh, rl;
 950     u16 *dstreg;
 951     uint srcoffset;
 952
 953     START_OF_INSTR();
 954     DECODE_PRINTF("LGS\t");
 955     FETCH_DECODE_MODRM(mod, rh, rl);
 956     if (mod < 3) {
 957         dstreg = DECODE_RM_WORD_REGISTER(rh);
 958         DECODE_PRINTF(",");
 959         srcoffset = decode_rmXX_address(mod, rl);
 960         DECODE_PRINTF("\n");
 961         TRACE_AND_STEP();
 962         *dstreg = fetch_data_word(srcoffset);
 963         M.x86.R_GS = fetch_data_word(srcoffset + 2);
 964     } else {                     /* register to register */
 965         /* UNDEFINED! */
 966         TRACE_AND_STEP();
 967     }
 968     DECODE_CLEAR_SEGOVR();
 969     END_OF_INSTR();
 970 }
 971
 972 /****************************************************************************
 973 REMARKS:
 974 Handles opcode 0x0f,0xb6
 975 ****************************************************************************/
 976 void x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2))
 977 {
 978     int mod, rl, rh;
 979     uint srcoffset;
 980
 981     START_OF_INSTR();
 982     DECODE_PRINTF("MOVZX\t");
 983     FETCH_DECODE_MODRM(mod, rh, rl);
 984     if (mod < 3) {
 985         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
 986             u32 *destreg;
 987             u32 srcval;
 988
 989             destreg = DECODE_RM_LONG_REGISTER(rh);
 990             DECODE_PRINTF(",");
 991             srcoffset = decode_rmXX_address(mod, rl);
 992             srcval = fetch_data_byte(srcoffset);
 993             DECODE_PRINTF("\n");
 994             TRACE_AND_STEP();
 995             *destreg = srcval;
 996         } else {
 997             u16 *destreg;
 998             u16 srcval;
 999
1000             destreg = DECODE_RM_WORD_REGISTER(rh);
1001             DECODE_PRINTF(",");
1002             srcoffset = decode_rmXX_address(mod, rl);
1003             srcval = fetch_data_byte(srcoffset);
1004             DECODE_PRINTF("\n");
1005             TRACE_AND_STEP();
1006             *destreg = srcval;
1007         }
1008     } else {                     /* register to register */
1009         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1010             u32 *destreg;
1011             u8  *srcreg;
1012
1013             destreg = DECODE_RM_LONG_REGISTER(rh);
1014             DECODE_PRINTF(",");
1015             srcreg = DECODE_RM_BYTE_REGISTER(rl);
1016             DECODE_PRINTF("\n");
1017             TRACE_AND_STEP();
1018             *destreg = *srcreg;
1019         } else {
1020             u16 *destreg;
1021             u8  *srcreg;
1022
1023             destreg = DECODE_RM_WORD_REGISTER(rh);
1024             DECODE_PRINTF(",");
1025             srcreg = DECODE_RM_BYTE_REGISTER(rl);
1026             DECODE_PRINTF("\n");
1027             TRACE_AND_STEP();
1028             *destreg = *srcreg;
1029         }
1030     }
1031     DECODE_CLEAR_SEGOVR();
1032     END_OF_INSTR();
1033 }
1034
1035 /****************************************************************************
1036 REMARKS:
1037 Handles opcode 0x0f,0xb7
1038 ****************************************************************************/
1039 void x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2))
1040 {
1041     int mod, rl, rh;
1042     uint srcoffset;
1043     u32 *destreg;
1044     u32 srcval;
1045     u16 *srcreg;
1046
1047     START_OF_INSTR();
1048     DECODE_PRINTF("MOVZX\t");
1049     FETCH_DECODE_MODRM(mod, rh, rl);
1050     if (mod < 3) {
1051         destreg = DECODE_RM_LONG_REGISTER(rh);
1052         DECODE_PRINTF(",");
1053         srcoffset = decode_rmXX_address(mod, rl);
1054         srcval = fetch_data_word(srcoffset);
1055         DECODE_PRINTF("\n");
1056         TRACE_AND_STEP();
1057         *destreg = srcval;
1058     } else {                     /* register to register */
1059         destreg = DECODE_RM_LONG_REGISTER(rh);
1060         DECODE_PRINTF(",");
1061         srcreg = DECODE_RM_WORD_REGISTER(rl);
1062         DECODE_PRINTF("\n");
1063         TRACE_AND_STEP();
1064         *destreg = *srcreg;
1065     }
1066     DECODE_CLEAR_SEGOVR();
1067     END_OF_INSTR();
1068 }
1069
1070 /****************************************************************************
1071 REMARKS:
1072 Handles opcode 0x0f,0xba
1073 ****************************************************************************/
1074 void x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2))
1075 {
1076     int mod, rl, rh;
1077     uint srcoffset;
1078     u8 shift;
1079     int bit;
1080
1081     START_OF_INSTR();
1082     FETCH_DECODE_MODRM(mod, rh, rl);
1083     switch (rh) {
1084     case 4:
1085         DECODE_PRINTF("BT\t");
1086         break;
1087     case 5:
1088         DECODE_PRINTF("BTS\t");
1089         break;
1090     case 6:
1091         DECODE_PRINTF("BTR\t");
1092         break;
1093     case 7:
1094         DECODE_PRINTF("BTC\t");
1095         break;
1096     default:
1097         DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
1098         TRACE_REGS();
1099         printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n",
1100                 M.x86.R_CS, M.x86.R_IP-3,op2, (mod<<6)|(rh<<3)|rl);
1101         HALT_SYS();
1102     }
1103     if (mod < 3) {
1104
1105         srcoffset = decode_rmXX_address(mod, rl);
1106         shift = fetch_byte_imm();
1107         DECODE_PRINTF2(",%d\n", shift);
1108         TRACE_AND_STEP();
1109
1110         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1111             u32 srcval, mask;
1112
1113             bit = shift & 0x1F;
1114             srcval = fetch_data_long(srcoffset);
1115             mask = (0x1 << bit);
1116             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
1117             switch (rh) {
1118             case 5:
1119                 store_data_long(srcoffset, srcval | mask);
1120                 break;
1121             case 6:
1122                 store_data_long(srcoffset, srcval & ~mask);
1123                 break;
1124             case 7:
1125                 store_data_long(srcoffset, srcval ^ mask);
1126                 break;
1127             default:
1128                 break;
1129             }
1130         } else {
1131             u16 srcval, mask;
1132
1133             bit = shift & 0xF;
1134             srcval = fetch_data_word(srcoffset);
1135             mask = (0x1 << bit);
1136             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
1137             switch (rh) {
1138             case 5:
1139                 store_data_word(srcoffset, srcval | mask);
1140                 break;
1141             case 6:
1142                 store_data_word(srcoffset, srcval & ~mask);
1143                 break;
1144             case 7:
1145                 store_data_word(srcoffset, srcval ^ mask);
1146                 break;
1147             default:
1148                 break;
1149             }
1150         }
1151     } else {                     /* register to register */
1152         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1153             u32 *srcreg;
1154             u32 mask;
1155
1156             srcreg = DECODE_RM_LONG_REGISTER(rl);
1157             shift = fetch_byte_imm();
1158             DECODE_PRINTF2(",%d\n", shift);
1159             TRACE_AND_STEP();
1160             bit = shift & 0x1F;
1161             mask = (0x1 << bit);
1162             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
1163             switch (rh) {
1164             case 5:
1165                 *srcreg |= mask;
1166                 break;
1167             case 6:
1168                 *srcreg &= ~mask;
1169                 break;
1170             case 7:
1171                 *srcreg ^= mask;
1172                 break;
1173             default:
1174                 break;
1175             }
1176         } else {
1177             u16 *srcreg;
1178             u16 mask;
1179
1180             srcreg = DECODE_RM_WORD_REGISTER(rl);
1181             shift = fetch_byte_imm();
1182             DECODE_PRINTF2(",%d\n", shift);
1183             TRACE_AND_STEP();
1184             bit = shift & 0xF;
1185             mask = (0x1 << bit);
1186             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
1187             switch (rh) {
1188             case 5:
1189                 *srcreg |= mask;
1190                 break;
1191             case 6:
1192                 *srcreg &= ~mask;
1193                 break;
1194             case 7:
1195                 *srcreg ^= mask;
1196                 break;
1197             default:
1198                 break;
1199             }
1200         }
1201     }
1202     DECODE_CLEAR_SEGOVR();
1203     END_OF_INSTR();
1204 }
1205
1206 /****************************************************************************
1207 REMARKS:
1208 Handles opcode 0x0f,0xbb
1209 ****************************************************************************/
1210 void x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2))
1211 {
1212     int mod, rl, rh;
1213     uint srcoffset;
1214     int bit,disp;
1215
1216     START_OF_INSTR();
1217     DECODE_PRINTF("BTC\t");
1218     FETCH_DECODE_MODRM(mod, rh, rl);
1219     if (mod < 3) {
1220         srcoffset = decode_rmXX_address(mod, rl);
1221         DECODE_PRINTF(",");
1222         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1223             u32 srcval,mask;
1224             u32 *shiftreg;
1225
1226             shiftreg = DECODE_RM_LONG_REGISTER(rh);
1227             TRACE_AND_STEP();
1228             bit = *shiftreg & 0x1F;
1229             disp = (s16)*shiftreg >> 5;
1230             srcval = fetch_data_long(srcoffset+disp);
1231             mask = (0x1 << bit);
1232             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
1233             store_data_long(srcoffset+disp, srcval ^ mask);
1234         } else {
1235             u16 srcval,mask;
1236             u16 *shiftreg;
1237
1238             shiftreg = DECODE_RM_WORD_REGISTER(rh);
1239             TRACE_AND_STEP();
1240             bit = *shiftreg & 0xF;
1241             disp = (s16)*shiftreg >> 4;
1242             srcval = fetch_data_word(srcoffset+disp);
1243             mask = (u16)(0x1 << bit);
1244             CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
1245             store_data_word(srcoffset+disp, (u16)(srcval ^ mask));
1246         }
1247     } else {                     /* register to register */
1248         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1249             u32 *srcreg,*shiftreg;
1250             u32 mask;
1251
1252             srcreg = DECODE_RM_LONG_REGISTER(rl);
1253             DECODE_PRINTF(",");
1254             shiftreg = DECODE_RM_LONG_REGISTER(rh);
1255             TRACE_AND_STEP();
1256             bit = *shiftreg & 0x1F;
1257             mask = (0x1 << bit);
1258             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
1259             *srcreg ^= mask;
1260         } else {
1261             u16 *srcreg,*shiftreg;
1262             u16 mask;
1263
1264             srcreg = DECODE_RM_WORD_REGISTER(rl);
1265             DECODE_PRINTF(",");
1266             shiftreg = DECODE_RM_WORD_REGISTER(rh);
1267             TRACE_AND_STEP();
1268             bit = *shiftreg & 0xF;
1269             mask = (u16)(0x1 << bit);
1270             CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
1271             *srcreg ^= mask;
1272         }
1273     }
1274     DECODE_CLEAR_SEGOVR();
1275     END_OF_INSTR();
1276 }
1277
1278 /****************************************************************************
1279 REMARKS:
1280 Handles opcode 0x0f,0xbc
1281 ****************************************************************************/
1282 void x86emuOp2_bsf(u8 X86EMU_UNUSED(op2))
1283 {
1284     int mod, rl, rh;
1285     uint srcoffset;
1286
1287     START_OF_INSTR();
1288     DECODE_PRINTF("BSF\n");
1289     FETCH_DECODE_MODRM(mod, rh, rl);
1290     if (mod < 3) {
1291         srcoffset = decode_rmXX_address(mod, rl);
1292         DECODE_PRINTF(",");
1293         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1294             u32 srcval, *dstreg;
1295
1296             dstreg = DECODE_RM_LONG_REGISTER(rh);
1297             TRACE_AND_STEP();
1298             srcval = fetch_data_long(srcoffset);
1299             CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
1300             for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
1301                 if ((srcval >> *dstreg) & 1) break;
1302         } else {
1303             u16 srcval, *dstreg;
1304
1305             dstreg = DECODE_RM_WORD_REGISTER(rh);
1306             TRACE_AND_STEP();
1307             srcval = fetch_data_word(srcoffset);
1308             CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
1309             for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
1310                 if ((srcval >> *dstreg) & 1) break;
1311         }
1312     } else {             /* register to register */
1313         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1314             u32 *srcreg, *dstreg;
1315
1316             srcreg = DECODE_RM_LONG_REGISTER(rl);
1317             DECODE_PRINTF(",");
1318             dstreg = DECODE_RM_LONG_REGISTER(rh);
1319             TRACE_AND_STEP();
1320             CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
1321             for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
1322                 if ((*srcreg >> *dstreg) & 1) break;
1323         } else {
1324             u16 *srcreg, *dstreg;
1325
1326             srcreg = DECODE_RM_WORD_REGISTER(rl);
1327             DECODE_PRINTF(",");
1328             dstreg = DECODE_RM_WORD_REGISTER(rh);
1329             TRACE_AND_STEP();
1330             CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
1331             for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
1332                 if ((*srcreg >> *dstreg) & 1) break;
1333         }
1334     }
1335     DECODE_CLEAR_SEGOVR();
1336     END_OF_INSTR();
1337 }
1338
1339 /****************************************************************************
1340 REMARKS:
1341 Handles opcode 0x0f,0xbd
1342 ****************************************************************************/
1343 void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2))
1344 {
1345     int mod, rl, rh;
1346     uint srcoffset;
1347
1348     START_OF_INSTR();
1349     DECODE_PRINTF("BSF\n");
1350     FETCH_DECODE_MODRM(mod, rh, rl);
1351     if (mod < 3) {
1352         srcoffset = decode_rmXX_address(mod, rl);
1353         DECODE_PRINTF(",");
1354         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1355             u32 srcval, *dstreg;
1356
1357             dstreg = DECODE_RM_LONG_REGISTER(rh);
1358             TRACE_AND_STEP();
1359             srcval = fetch_data_long(srcoffset);
1360             CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
1361             for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
1362                 if ((srcval >> *dstreg) & 1) break;
1363         } else {
1364             u16 srcval, *dstreg;
1365
1366             dstreg = DECODE_RM_WORD_REGISTER(rh);
1367             TRACE_AND_STEP();
1368             srcval = fetch_data_word(srcoffset);
1369             CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
1370             for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
1371                 if ((srcval >> *dstreg) & 1) break;
1372         }
1373     } else {             /* register to register */
1374         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1375             u32 *srcreg, *dstreg;
1376
1377             srcreg = DECODE_RM_LONG_REGISTER(rl);
1378             DECODE_PRINTF(",");
1379             dstreg = DECODE_RM_LONG_REGISTER(rh);
1380             TRACE_AND_STEP();
1381             CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
1382             for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
1383                 if ((*srcreg >> *dstreg) & 1) break;
1384         } else {
1385             u16 *srcreg, *dstreg;
1386
1387             srcreg = DECODE_RM_WORD_REGISTER(rl);
1388             DECODE_PRINTF(",");
1389             dstreg = DECODE_RM_WORD_REGISTER(rh);
1390             TRACE_AND_STEP();
1391             CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
1392             for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
1393                 if ((*srcreg >> *dstreg) & 1) break;
1394         }
1395     }
1396     DECODE_CLEAR_SEGOVR();
1397     END_OF_INSTR();
1398 }
1399
1400 /****************************************************************************
1401 REMARKS:
1402 Handles opcode 0x0f,0xbe
1403 ****************************************************************************/
1404 void x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2))
1405 {
1406     int mod, rl, rh;
1407     uint srcoffset;
1408
1409     START_OF_INSTR();
1410     DECODE_PRINTF("MOVSX\t");
1411     FETCH_DECODE_MODRM(mod, rh, rl);
1412     if (mod < 3) {
1413         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1414             u32 *destreg;
1415             u32 srcval;
1416
1417             destreg = DECODE_RM_LONG_REGISTER(rh);
1418             DECODE_PRINTF(",");
1419             srcoffset = decode_rmXX_address(mod, rl);
1420             srcval = (s32)((s8)fetch_data_byte(srcoffset));
1421             DECODE_PRINTF("\n");
1422             TRACE_AND_STEP();
1423             *destreg = srcval;
1424         } else {
1425             u16 *destreg;
1426             u16 srcval;
1427
1428             destreg = DECODE_RM_WORD_REGISTER(rh);
1429             DECODE_PRINTF(",");
1430             srcoffset = decode_rmXX_address(mod, rl);
1431             srcval = (s16)((s8)fetch_data_byte(srcoffset));
1432             DECODE_PRINTF("\n");
1433             TRACE_AND_STEP();
1434             *destreg = srcval;
1435         }
1436     } else {                     /* register to register */
1437         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
1438             u32 *destreg;
1439             u8  *srcreg;
1440
1441             destreg = DECODE_RM_LONG_REGISTER(rh);
1442             DECODE_PRINTF(",");
1443             srcreg = DECODE_RM_BYTE_REGISTER(rl);
1444             DECODE_PRINTF("\n");
1445             TRACE_AND_STEP();
1446             *destreg = (s32)((s8)*srcreg);
1447         } else {
1448             u16 *destreg;
1449             u8  *srcreg;
1450
1451             destreg = DECODE_RM_WORD_REGISTER(rh);
1452             DECODE_PRINTF(",");
1453             srcreg = DECODE_RM_BYTE_REGISTER(rl);
1454             DECODE_PRINTF("\n");
1455             TRACE_AND_STEP();
1456             *destreg = (s16)((s8)*srcreg);
1457         }
1458     }
1459     DECODE_CLEAR_SEGOVR();
1460     END_OF_INSTR();
1461 }
1462
1463 /****************************************************************************
1464 REMARKS:
1465 Handles opcode 0x0f,0xbf
1466 ****************************************************************************/
1467 void x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2))
1468 {
1469     int mod, rl, rh;
1470     uint srcoffset;
1471     u32 *destreg;
1472     u32 srcval;
1473     u16 *srcreg;
1474
1475     START_OF_INSTR();
1476     DECODE_PRINTF("MOVSX\t");
1477     FETCH_DECODE_MODRM(mod, rh, rl);
1478     if (mod < 3) {
1479         destreg = DECODE_RM_LONG_REGISTER(rh);
1480         DECODE_PRINTF(",");
1481         srcoffset = decode_rmXX_address(mod, rl);
1482         srcval = (s32)((s16)fetch_data_word(srcoffset));
1483         DECODE_PRINTF("\n");
1484         TRACE_AND_STEP();
1485         *destreg = srcval;
1486     } else {                     /* register to register */
1487         destreg = DECODE_RM_LONG_REGISTER(rh);
1488         DECODE_PRINTF(",");
1489         srcreg = DECODE_RM_WORD_REGISTER(rl);
1490         DECODE_PRINTF("\n");
1491         TRACE_AND_STEP();
1492         *destreg = (s32)((s16)*srcreg);
1493     }
1494     DECODE_CLEAR_SEGOVR();
1495     END_OF_INSTR();
1496 }
1497
1498 /***************************************************************************
1499  * Double byte operation code table:
1500  **************************************************************************/
1501 void (*x86emu_optab2[256])(u8) __attribute__((section(GOT2_TYPE))) =
1502 {
1503 /*  0x00 */ x86emuOp2_illegal_op,  /* Group F (ring 0 PM)      */
1504 /*  0x01 */ x86emuOp2_illegal_op,  /* Group G (ring 0 PM)      */
1505 /*  0x02 */ x86emuOp2_illegal_op,  /* lar (ring 0 PM)          */
1506 /*  0x03 */ x86emuOp2_illegal_op,  /* lsl (ring 0 PM)          */
1507 /*  0x04 */ x86emuOp2_illegal_op,
1508 /*  0x05 */ x86emuOp2_illegal_op,  /* loadall (undocumented)   */
1509 /*  0x06 */ x86emuOp2_illegal_op,  /* clts (ring 0 PM)         */
1510 /*  0x07 */ x86emuOp2_illegal_op,  /* loadall (undocumented)   */
1511 /*  0x08 */ x86emuOp2_illegal_op,  /* invd (ring 0 PM)         */
1512 /*  0x09 */ x86emuOp2_illegal_op,  /* wbinvd (ring 0 PM)       */
1513 /*  0x0a */ x86emuOp2_illegal_op,
1514 /*  0x0b */ x86emuOp2_illegal_op,
1515 /*  0x0c */ x86emuOp2_illegal_op,
1516 /*  0x0d */ x86emuOp2_illegal_op,
1517 /*  0x0e */ x86emuOp2_illegal_op,
1518 /*  0x0f */ x86emuOp2_illegal_op,
1519
1520 /*  0x10 */ x86emuOp2_illegal_op,
1521 /*  0x11 */ x86emuOp2_illegal_op,
1522 /*  0x12 */ x86emuOp2_illegal_op,
1523 /*  0x13 */ x86emuOp2_illegal_op,
1524 /*  0x14 */ x86emuOp2_illegal_op,
1525 /*  0x15 */ x86emuOp2_illegal_op,
1526 /*  0x16 */ x86emuOp2_illegal_op,
1527 /*  0x17 */ x86emuOp2_illegal_op,
1528 /*  0x18 */ x86emuOp2_illegal_op,
1529 /*  0x19 */ x86emuOp2_illegal_op,
1530 /*  0x1a */ x86emuOp2_illegal_op,
1531 /*  0x1b */ x86emuOp2_illegal_op,
1532 /*  0x1c */ x86emuOp2_illegal_op,
1533 /*  0x1d */ x86emuOp2_illegal_op,
1534 /*  0x1e */ x86emuOp2_illegal_op,
1535 /*  0x1f */ x86emuOp2_illegal_op,
1536
1537 /*  0x20 */ x86emuOp2_illegal_op,  /* mov reg32,creg (ring 0 PM) */
1538 /*  0x21 */ x86emuOp2_illegal_op,  /* mov reg32,dreg (ring 0 PM) */
1539 /*  0x22 */ x86emuOp2_illegal_op,  /* mov creg,reg32 (ring 0 PM) */
1540 /*  0x23 */ x86emuOp2_illegal_op,  /* mov dreg,reg32 (ring 0 PM) */
1541 /*  0x24 */ x86emuOp2_illegal_op,  /* mov reg32,treg (ring 0 PM) */
1542 /*  0x25 */ x86emuOp2_illegal_op,
1543 /*  0x26 */ x86emuOp2_illegal_op,  /* mov treg,reg32 (ring 0 PM) */
1544 /*  0x27 */ x86emuOp2_illegal_op,
1545 /*  0x28 */ x86emuOp2_illegal_op,
1546 /*  0x29 */ x86emuOp2_illegal_op,
1547 /*  0x2a */ x86emuOp2_illegal_op,
1548 /*  0x2b */ x86emuOp2_illegal_op,
1549 /*  0x2c */ x86emuOp2_illegal_op,
1550 /*  0x2d */ x86emuOp2_illegal_op,
1551 /*  0x2e */ x86emuOp2_illegal_op,
1552 /*  0x2f */ x86emuOp2_illegal_op,
1553
1554 /*  0x30 */ x86emuOp2_illegal_op,
1555 /*  0x31 */ x86emuOp2_illegal_op,
1556 /*  0x32 */ x86emuOp2_illegal_op,
1557 /*  0x33 */ x86emuOp2_illegal_op,
1558 /*  0x34 */ x86emuOp2_illegal_op,
1559 /*  0x35 */ x86emuOp2_illegal_op,
1560 /*  0x36 */ x86emuOp2_illegal_op,
1561 /*  0x37 */ x86emuOp2_illegal_op,
1562 /*  0x38 */ x86emuOp2_illegal_op,
1563 /*  0x39 */ x86emuOp2_illegal_op,
1564 /*  0x3a */ x86emuOp2_illegal_op,
1565 /*  0x3b */ x86emuOp2_illegal_op,
1566 /*  0x3c */ x86emuOp2_illegal_op,
1567 /*  0x3d */ x86emuOp2_illegal_op,
1568 /*  0x3e */ x86emuOp2_illegal_op,
1569 /*  0x3f */ x86emuOp2_illegal_op,
1570
1571 /*  0x40 */ x86emuOp2_illegal_op,
1572 /*  0x41 */ x86emuOp2_illegal_op,
1573 /*  0x42 */ x86emuOp2_illegal_op,
1574 /*  0x43 */ x86emuOp2_illegal_op,
1575 /*  0x44 */ x86emuOp2_illegal_op,
1576 /*  0x45 */ x86emuOp2_illegal_op,
1577 /*  0x46 */ x86emuOp2_illegal_op,
1578 /*  0x47 */ x86emuOp2_illegal_op,
1579 /*  0x48 */ x86emuOp2_illegal_op,
1580 /*  0x49 */ x86emuOp2_illegal_op,
1581 /*  0x4a */ x86emuOp2_illegal_op,
1582 /*  0x4b */ x86emuOp2_illegal_op,
1583 /*  0x4c */ x86emuOp2_illegal_op,
1584 /*  0x4d */ x86emuOp2_illegal_op,
1585 /*  0x4e */ x86emuOp2_illegal_op,
1586 /*  0x4f */ x86emuOp2_illegal_op,
1587
1588 /*  0x50 */ x86emuOp2_illegal_op,
1589 /*  0x51 */ x86emuOp2_illegal_op,
1590 /*  0x52 */ x86emuOp2_illegal_op,
1591 /*  0x53 */ x86emuOp2_illegal_op,
1592 /*  0x54 */ x86emuOp2_illegal_op,
1593 /*  0x55 */ x86emuOp2_illegal_op,
1594 /*  0x56 */ x86emuOp2_illegal_op,
1595 /*  0x57 */ x86emuOp2_illegal_op,
1596 /*  0x58 */ x86emuOp2_illegal_op,
1597 /*  0x59 */ x86emuOp2_illegal_op,
1598 /*  0x5a */ x86emuOp2_illegal_op,
1599 /*  0x5b */ x86emuOp2_illegal_op,
1600 /*  0x5c */ x86emuOp2_illegal_op,
1601 /*  0x5d */ x86emuOp2_illegal_op,
1602 /*  0x5e */ x86emuOp2_illegal_op,
1603 /*  0x5f */ x86emuOp2_illegal_op,
1604
1605 /*  0x60 */ x86emuOp2_illegal_op,
1606 /*  0x61 */ x86emuOp2_illegal_op,
1607 /*  0x62 */ x86emuOp2_illegal_op,
1608 /*  0x63 */ x86emuOp2_illegal_op,
1609 /*  0x64 */ x86emuOp2_illegal_op,
1610 /*  0x65 */ x86emuOp2_illegal_op,
1611 /*  0x66 */ x86emuOp2_illegal_op,
1612 /*  0x67 */ x86emuOp2_illegal_op,
1613 /*  0x68 */ x86emuOp2_illegal_op,
1614 /*  0x69 */ x86emuOp2_illegal_op,
1615 /*  0x6a */ x86emuOp2_illegal_op,
1616 /*  0x6b */ x86emuOp2_illegal_op,
1617 /*  0x6c */ x86emuOp2_illegal_op,
1618 /*  0x6d */ x86emuOp2_illegal_op,
1619 /*  0x6e */ x86emuOp2_illegal_op,
1620 /*  0x6f */ x86emuOp2_illegal_op,
1621
1622 /*  0x70 */ x86emuOp2_illegal_op,
1623 /*  0x71 */ x86emuOp2_illegal_op,
1624 /*  0x72 */ x86emuOp2_illegal_op,
1625 /*  0x73 */ x86emuOp2_illegal_op,
1626 /*  0x74 */ x86emuOp2_illegal_op,
1627 /*  0x75 */ x86emuOp2_illegal_op,
1628 /*  0x76 */ x86emuOp2_illegal_op,
1629 /*  0x77 */ x86emuOp2_illegal_op,
1630 /*  0x78 */ x86emuOp2_illegal_op,
1631 /*  0x79 */ x86emuOp2_illegal_op,
1632 /*  0x7a */ x86emuOp2_illegal_op,
1633 /*  0x7b */ x86emuOp2_illegal_op,
1634 /*  0x7c */ x86emuOp2_illegal_op,
1635 /*  0x7d */ x86emuOp2_illegal_op,
1636 /*  0x7e */ x86emuOp2_illegal_op,
1637 /*  0x7f */ x86emuOp2_illegal_op,
1638
1639 /*  0x80 */ x86emuOp2_long_jump,
1640 /*  0x81 */ x86emuOp2_long_jump,
1641 /*  0x82 */ x86emuOp2_long_jump,
1642 /*  0x83 */ x86emuOp2_long_jump,
1643 /*  0x84 */ x86emuOp2_long_jump,
1644 /*  0x85 */ x86emuOp2_long_jump,
1645 /*  0x86 */ x86emuOp2_long_jump,
1646 /*  0x87 */ x86emuOp2_long_jump,
1647 /*  0x88 */ x86emuOp2_long_jump,
1648 /*  0x89 */ x86emuOp2_long_jump,
1649 /*  0x8a */ x86emuOp2_long_jump,
1650 /*  0x8b */ x86emuOp2_long_jump,
1651 /*  0x8c */ x86emuOp2_long_jump,
1652 /*  0x8d */ x86emuOp2_long_jump,
1653 /*  0x8e */ x86emuOp2_long_jump,
1654 /*  0x8f */ x86emuOp2_long_jump,
1655
1656 /*  0x90 */ x86emuOp2_set_byte,
1657 /*  0x91 */ x86emuOp2_set_byte,
1658 /*  0x92 */ x86emuOp2_set_byte,
1659 /*  0x93 */ x86emuOp2_set_byte,
1660 /*  0x94 */ x86emuOp2_set_byte,
1661 /*  0x95 */ x86emuOp2_set_byte,
1662 /*  0x96 */ x86emuOp2_set_byte,
1663 /*  0x97 */ x86emuOp2_set_byte,
1664 /*  0x98 */ x86emuOp2_set_byte,
1665 /*  0x99 */ x86emuOp2_set_byte,
1666 /*  0x9a */ x86emuOp2_set_byte,
1667 /*  0x9b */ x86emuOp2_set_byte,
1668 /*  0x9c */ x86emuOp2_set_byte,
1669 /*  0x9d */ x86emuOp2_set_byte,
1670 /*  0x9e */ x86emuOp2_set_byte,
1671 /*  0x9f */ x86emuOp2_set_byte,
1672
1673 /*  0xa0 */ x86emuOp2_push_FS,
1674 /*  0xa1 */ x86emuOp2_pop_FS,
1675 /*  0xa2 */ x86emuOp2_illegal_op,
1676 /*  0xa3 */ x86emuOp2_bt_R,
1677 /*  0xa4 */ x86emuOp2_shld_IMM,
1678 /*  0xa5 */ x86emuOp2_shld_CL,
1679 /*  0xa6 */ x86emuOp2_illegal_op,
1680 /*  0xa7 */ x86emuOp2_illegal_op,
1681 /*  0xa8 */ x86emuOp2_push_GS,
1682 /*  0xa9 */ x86emuOp2_pop_GS,
1683 /*  0xaa */ x86emuOp2_illegal_op,
1684 /*  0xab */ x86emuOp2_bt_R,
1685 /*  0xac */ x86emuOp2_shrd_IMM,
1686 /*  0xad */ x86emuOp2_shrd_CL,
1687 /*  0xae */ x86emuOp2_illegal_op,
1688 /*  0xaf */ x86emuOp2_imul_R_RM,
1689
1690 /*  0xb0 */ x86emuOp2_illegal_op,  /* TODO: cmpxchg */
1691 /*  0xb1 */ x86emuOp2_illegal_op,  /* TODO: cmpxchg */
1692 /*  0xb2 */ x86emuOp2_lss_R_IMM,
1693 /*  0xb3 */ x86emuOp2_btr_R,
1694 /*  0xb4 */ x86emuOp2_lfs_R_IMM,
1695 /*  0xb5 */ x86emuOp2_lgs_R_IMM,
1696 /*  0xb6 */ x86emuOp2_movzx_byte_R_RM,
1697 /*  0xb7 */ x86emuOp2_movzx_word_R_RM,
1698 /*  0xb8 */ x86emuOp2_illegal_op,
1699 /*  0xb9 */ x86emuOp2_illegal_op,
1700 /*  0xba */ x86emuOp2_btX_I,
1701 /*  0xbb */ x86emuOp2_btc_R,
1702 /*  0xbc */ x86emuOp2_bsf,
1703 /*  0xbd */ x86emuOp2_bsr,
1704 /*  0xbe */ x86emuOp2_movsx_byte_R_RM,
1705 /*  0xbf */ x86emuOp2_movsx_word_R_RM,
1706
1707 /*  0xc0 */ x86emuOp2_illegal_op,  /* TODO: xadd */
1708 /*  0xc1 */ x86emuOp2_illegal_op,  /* TODO: xadd */
1709 /*  0xc2 */ x86emuOp2_illegal_op,
1710 /*  0xc3 */ x86emuOp2_illegal_op,
1711 /*  0xc4 */ x86emuOp2_illegal_op,
1712 /*  0xc5 */ x86emuOp2_illegal_op,
1713 /*  0xc6 */ x86emuOp2_illegal_op,
1714 /*  0xc7 */ x86emuOp2_illegal_op,
1715 /*  0xc8 */ x86emuOp2_illegal_op,  /* TODO: bswap */
1716 /*  0xc9 */ x86emuOp2_illegal_op,  /* TODO: bswap */
1717 /*  0xca */ x86emuOp2_illegal_op,  /* TODO: bswap */
1718 /*  0xcb */ x86emuOp2_illegal_op,  /* TODO: bswap */
1719 /*  0xcc */ x86emuOp2_illegal_op,  /* TODO: bswap */
1720 /*  0xcd */ x86emuOp2_illegal_op,  /* TODO: bswap */
1721 /*  0xce */ x86emuOp2_illegal_op,  /* TODO: bswap */
1722 /*  0xcf */ x86emuOp2_illegal_op,  /* TODO: bswap */
1723
1724 /*  0xd0 */ x86emuOp2_illegal_op,
1725 /*  0xd1 */ x86emuOp2_illegal_op,
1726 /*  0xd2 */ x86emuOp2_illegal_op,
1727 /*  0xd3 */ x86emuOp2_illegal_op,
1728 /*  0xd4 */ x86emuOp2_illegal_op,
1729 /*  0xd5 */ x86emuOp2_illegal_op,
1730 /*  0xd6 */ x86emuOp2_illegal_op,
1731 /*  0xd7 */ x86emuOp2_illegal_op,
1732 /*  0xd8 */ x86emuOp2_illegal_op,
1733 /*  0xd9 */ x86emuOp2_illegal_op,
1734 /*  0xda */ x86emuOp2_illegal_op,
1735 /*  0xdb */ x86emuOp2_illegal_op,
1736 /*  0xdc */ x86emuOp2_illegal_op,
1737 /*  0xdd */ x86emuOp2_illegal_op,
1738 /*  0xde */ x86emuOp2_illegal_op,
1739 /*  0xdf */ x86emuOp2_illegal_op,
1740
1741 /*  0xe0 */ x86emuOp2_illegal_op,
1742 /*  0xe1 */ x86emuOp2_illegal_op,
1743 /*  0xe2 */ x86emuOp2_illegal_op,
1744 /*  0xe3 */ x86emuOp2_illegal_op,
1745 /*  0xe4 */ x86emuOp2_illegal_op,
1746 /*  0xe5 */ x86emuOp2_illegal_op,
1747 /*  0xe6 */ x86emuOp2_illegal_op,
1748 /*  0xe7 */ x86emuOp2_illegal_op,
1749 /*  0xe8 */ x86emuOp2_illegal_op,
1750 /*  0xe9 */ x86emuOp2_illegal_op,
1751 /*  0xea */ x86emuOp2_illegal_op,
1752 /*  0xeb */ x86emuOp2_illegal_op,
1753 /*  0xec */ x86emuOp2_illegal_op,
1754 /*  0xed */ x86emuOp2_illegal_op,
1755 /*  0xee */ x86emuOp2_illegal_op,
1756 /*  0xef */ x86emuOp2_illegal_op,
1757
1758 /*  0xf0 */ x86emuOp2_illegal_op,
1759 /*  0xf1 */ x86emuOp2_illegal_op,
1760 /*  0xf2 */ x86emuOp2_illegal_op,
1761 /*  0xf3 */ x86emuOp2_illegal_op,
1762 /*  0xf4 */ x86emuOp2_illegal_op,
1763 /*  0xf5 */ x86emuOp2_illegal_op,
1764 /*  0xf6 */ x86emuOp2_illegal_op,
1765 /*  0xf7 */ x86emuOp2_illegal_op,
1766 /*  0xf8 */ x86emuOp2_illegal_op,
1767 /*  0xf9 */ x86emuOp2_illegal_op,
1768 /*  0xfa */ x86emuOp2_illegal_op,
1769 /*  0xfb */ x86emuOp2_illegal_op,
1770 /*  0xfc */ x86emuOp2_illegal_op,
1771 /*  0xfd */ x86emuOp2_illegal_op,
1772 /*  0xfe */ x86emuOp2_illegal_op,
1773 /*  0xff */ x86emuOp2_illegal_op,
1774 };
1775
1776 #endif