palacios/src/palacios/svm_handler.c

   1 /* Northwestern University */
   2 /* (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> */
   3
   4 #include <palacios/svm_handler.h>
   5 #include <palacios/vmm.h>
   6 #include <palacios/vm_guest_mem.h>
   7 #include <palacios/vmm_decoder.h>
   8 #include <palacios/vmm_ctrl_regs.h>
   9 #include <palacios/svm_io.h>
  10 #include <palacios/svm_halt.h>
  11 #include <palacios/svm_pause.h>
  12 #include <palacios/svm_wbinvd.h>
  13 #include <palacios/vmm_intr.h>
  14 #include <palacios/vmm_emulator.h>
  15
  16 int handle_svm_exit(struct guest_info * info) {
  17   vmcb_ctrl_t * guest_ctrl = 0;
  18   vmcb_saved_state_t * guest_state = 0;
  19   ulong_t exit_code = 0;
  20
  21   guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
  22   guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
  23
  24
  25   // Update the high level state
  26   info->rip = guest_state->rip;
  27   info->vm_regs.rsp = guest_state->rsp;
  28   info->vm_regs.rax = guest_state->rax;
  29
  30   info->cpl = guest_state->cpl;
  31
  32
  33   info->ctrl_regs.cr0 = guest_state->cr0;
  34   info->ctrl_regs.cr2 = guest_state->cr2;
  35   info->ctrl_regs.cr3 = guest_state->cr3;
  36   info->ctrl_regs.cr4 = guest_state->cr4;
  37   info->dbg_regs.dr6 = guest_state->dr6;
  38   info->dbg_regs.dr7 = guest_state->dr7;
  39   info->ctrl_regs.cr8 = guest_ctrl->guest_ctrl.V_TPR;
  40   info->ctrl_regs.rflags = guest_state->rflags;
  41   info->ctrl_regs.efer = guest_state->efer;
  42
  43   get_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
  44   info->cpu_mode = get_cpu_mode(info);
  45   info->mem_mode = get_mem_mode(info);
  46
  47
  48   exit_code = guest_ctrl->exit_code;
  49
  50
  51   // Disable printing io exits due to bochs debug messages
  52   //if (!((exit_code == VMEXIT_IOIO) && ((ushort_t)(guest_ctrl->exit_info1 >> 16) == 0x402))) {
  53
  54
  55   //  PrintDebug("SVM Returned: Exit Code: 0x%x \t\t(tsc=%ul)\n",exit_code, (uint_t)info->time_state.guest_tsc);
  56
  57   if ((0) && (exit_code < 0x4f)) {
  58     char instr[32];
  59     int ret;
  60     // Dump out the instr stream
  61
  62     //PrintDebug("RIP: %x\n", guest_state->rip);
  63     PrintDebug("RIP Linear: %x\n", get_addr_linear(info, info->rip, &(info->segments.cs)));
  64
  65     // OK, now we will read the instruction
  66     // The only difference between PROTECTED and PROTECTED_PG is whether we read
  67     // from guest_pa or guest_va
  68     if (info->mem_mode == PHYSICAL_MEM) {
  69       // The real rip address is actually a combination of the rip + CS base
  70       ret = read_guest_pa_memory(info, get_addr_linear(info, info->rip, &(info->segments.cs)), 32, instr);
  71     } else {
  72       ret = read_guest_va_memory(info, get_addr_linear(info, info->rip, &(info->segments.cs)), 32, instr);
  73     }
  74
  75     if (ret != 32) {
  76       // I think we should inject a GPF into the guest
  77       PrintDebug("Could not read instruction (ret=%d)\n", ret);
  78     } else {
  79
  80       PrintDebug("Instr Stream:\n");
  81       PrintTraceMemDump(instr, 32);
  82     }
  83   }
  84
  85
  86     //  }
  87   // PrintDebugVMCB((vmcb_t*)(info->vmm_data));
  88
  89
  90   // PrintDebug("SVM Returned:(VMCB=%x)\n", info->vmm_data);
  91   //PrintDebug("RIP: %x\n", guest_state->rip);
  92
  93
  94   //PrintDebug("SVM Returned: Exit Code: %x\n",exit_code);
  95
  96   switch (exit_code) {
  97
  98   case VMEXIT_IOIO: {
  99     struct svm_io_info * io_info = (struct svm_io_info *)&(guest_ctrl->exit_info1);
 100
 101     if (io_info->type == 0) {
 102       if (io_info->str) {
 103         if (handle_svm_io_outs(info) == -1 ) {
 104           return -1;
 105         }
 106       } else {
 107         if (handle_svm_io_out(info) == -1) {
 108           return -1;
 109         }
 110       }
 111     } else {
 112       if (io_info->str) {
 113         if (handle_svm_io_ins(info) == -1) {
 114           return -1;
 115         }
 116       } else {
 117         if (handle_svm_io_in(info) == -1) {
 118           return -1;
 119         }
 120       }
 121     }
 122   }
 123     break;
 124
 125
 126   case  VMEXIT_CR0_WRITE: {
 127 #ifdef DEBUG_CTRL_REGS
 128     PrintDebug("CR0 Write\n");
 129 #endif
 130     if (handle_cr0_write(info) == -1) {
 131       return -1;
 132     }
 133   }
 134     break;
 135
 136   case VMEXIT_CR0_READ: {
 137 #ifdef DEBUG_CTRL_REGS
 138     PrintDebug("CR0 Read\n");
 139 #endif
 140     if (handle_cr0_read(info) == -1) {
 141       return -1;
 142     }
 143   }
 144     break;
 145
 146   case VMEXIT_CR3_WRITE: {
 147 #ifdef DEBUG_CTRL_REGS
 148     PrintDebug("CR3 Write\n");
 149 #endif
 150     if (handle_cr3_write(info) == -1) {
 151       return -1;
 152     }
 153   }
 154     break;
 155
 156   case  VMEXIT_CR3_READ: {
 157 #ifdef DEBUG_CTRL_REGS
 158     PrintDebug("CR3 Read\n");
 159 #endif
 160     if (handle_cr3_read(info) == -1) {
 161       return -1;
 162     }
 163   }
 164     break;
 165
 166   case VMEXIT_EXCP14: {
 167     addr_t fault_addr = guest_ctrl->exit_info2;
 168     pf_error_t * error_code = (pf_error_t *)&(guest_ctrl->exit_info1);
 169 #ifdef DEBUG_SHADOW_PAGING
 170     PrintDebug("PageFault at %x (error=%d)\n", fault_addr, *error_code);
 171 #endif
 172     if (info->shdw_pg_mode == SHADOW_PAGING) {
 173       if (handle_shadow_pagefault(info, fault_addr, *error_code) == -1) {
 174         return -1;
 175       }
 176     } else {
 177       PrintError("Page fault in un implemented paging mode\n");
 178       return -1;
 179     }
 180   }
 181     break;
 182
 183   case VMEXIT_NPF: {
 184     PrintError("Currently unhandled Nested Page Fault\n");
 185     return -1;
 186
 187   }
 188     break;
 189
 190   case VMEXIT_INVLPG: {
 191     if (info->shdw_pg_mode == SHADOW_PAGING) {
 192 #ifdef DEBUG_SHADOW_PAGING
 193       PrintDebug("Invlpg\n");
 194 #endif
 195       if (handle_shadow_invlpg(info) == -1) {
 196         return -1;
 197       }
 198     }
 199
 200     /*
 201       (exit_code == VMEXIT_INVLPGA)   ||
 202     */
 203
 204   }
 205     break;
 206
 207   case VMEXIT_INTR: {
 208
 209     //    handle_svm_intr(info); // handled by interrupt dispatch earlier
 210
 211   }
 212     break;
 213
 214   case VMEXIT_SMI: {
 215
 216     //   handle_svm_smi(info); // ignored for now
 217
 218   }
 219     break;
 220
 221   case VMEXIT_HLT: {
 222     PrintDebug("Guest halted\n");
 223     if (handle_svm_halt(info) == -1) {
 224       return -1;
 225     }
 226   }
 227     break;
 228
 229   case VMEXIT_PAUSE: {
 230     PrintDebug("Guest paused\n");
 231     if (handle_svm_pause(info) == -1) {
 232       return -1;
 233     }
 234   }
 235     break;
 236
 237   case VMEXIT_EXCP1:
 238     {
 239 #ifdef DEBUG_EMULATOR
 240       PrintDebug("DEBUG EXCEPTION\n");
 241 #endif
 242       if (info->run_state == VM_EMULATING) {
 243         if (v3_emulation_exit_handler(info) == -1) {
 244           return -1;
 245         }
 246       } else {
 247         PrintError("VMMCALL with not emulator...\n");
 248         return -1;
 249       }
 250       break;
 251     }
 252
 253
 254   case VMEXIT_VMMCALL:
 255     {
 256 #ifdef DEBUG_EMULATOR
 257       PrintDebug("VMMCALL\n");
 258 #endif
 259       if (info->run_state == VM_EMULATING) {
 260         if (v3_emulation_exit_handler(info) == -1) {
 261           return -1;
 262         }
 263       } else {
 264         /*
 265         ulong_t tsc_spread = 0;
 266         ullong_t exit_tsc = 0;
 267
 268         ulong_t rax = (ulong_t)info->vm_regs.rbx;
 269         ulong_t rdx = (ulong_t)info->vm_regs.rcx;
 270
 271         *(ulong_t *)(&exit_tsc) = rax;
 272         *(((ulong_t *)(&exit_tsc)) + 1) = rdx;
 273
 274         tsc_spread = info->exit_tsc - exit_tsc;
 275
 276         PrintError("VMMCALL tsc diff = %lu\n",tsc_spread);
 277         info->rip += 3;
 278         */
 279         PrintError("VMMCALL with not emulator...\n");
 280         return -1;
 281       }
 282       break;
 283     }
 284
 285
 286
 287   case VMEXIT_WBINVD:
 288     {
 289 #ifdef DEBUG_EMULATOR
 290       PrintDebug("WBINVD\n");
 291 #endif
 292       if (!handle_svm_wbinvd(info)) {
 293         return -1;
 294       }
 295       break;
 296     }
 297
 298
 299
 300
 301     /* Exits Following this line are NOT HANDLED */
 302     /*=======================================================================*/
 303
 304   default: {
 305
 306     addr_t rip_addr;
 307     char buf[15];
 308     addr_t host_addr;
 309
 310     PrintDebug("Unhandled SVM Exit: %s\n", vmexit_code_to_str(exit_code));
 311
 312     rip_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
 313
 314
 315     PrintError("SVM Returned:(VMCB=%x)\n", info->vmm_data);
 316     PrintError("RIP: %x\n", guest_state->rip);
 317     PrintError("RIP Linear: %x\n", rip_addr);
 318
 319     PrintError("SVM Returned: Exit Code: %x\n", exit_code);
 320
 321     PrintError("io_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
 322     PrintError("io_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
 323
 324     PrintError("io_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
 325     PrintError("io_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
 326
 327
 328
 329     if (info->mem_mode == PHYSICAL_MEM) {
 330       if (guest_pa_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
 331         PrintError("Could not translate guest_state->rip to host address\n");
 332         return -1;
 333       }
 334     } else if (info->mem_mode == VIRTUAL_MEM) {
 335       if (guest_va_to_host_pa(info, guest_state->rip, &host_addr) == -1) {
 336         PrintError("Could not translate guest_state->rip to host address\n");
 337         return -1;
 338       }
 339     } else {
 340       PrintError("Invalid memory mode\n");
 341       return -1;
 342     }
 343
 344     PrintError("Host Address of rip = 0x%x\n", host_addr);
 345
 346     memset(buf, 0, 32);
 347
 348     PrintError("Reading instruction stream in guest\n", rip_addr);
 349
 350     if (info->mem_mode == PHYSICAL_MEM) {
 351       read_guest_pa_memory(info, rip_addr-16, 32, buf);
 352     } else {
 353       read_guest_va_memory(info, rip_addr-16, 32, buf);
 354     }
 355
 356     PrintDebug("16 bytes before Rip\n");
 357     PrintTraceMemDump(buf, 16);
 358     PrintDebug("Rip onward\n");
 359     PrintTraceMemDump(buf+16, 16);
 360
 361     return -1;
 362
 363   }
 364     break;
 365
 366   }
 367   // END OF SWITCH (EXIT_CODE)
 368
 369
 370   // Update the low level state
 371
 372   if (intr_pending(info)) {
 373
 374     switch (get_intr_type(info)) {
 375     case EXTERNAL_IRQ:
 376       {
 377         uint_t irq = get_intr_number(info);
 378
 379         // check to see if ==-1 (non exists)
 380
 381         /*
 382           guest_ctrl->EVENTINJ.vector = irq;
 383           guest_ctrl->EVENTINJ.valid = 1;
 384           guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXTERNAL_INTR;
 385         */
 386
 387         guest_ctrl->guest_ctrl.V_IRQ = 1;
 388         guest_ctrl->guest_ctrl.V_INTR_VECTOR = irq;
 389         guest_ctrl->guest_ctrl.V_IGN_TPR = 1;
 390         guest_ctrl->guest_ctrl.V_INTR_PRIO = 0xf;
 391 #ifdef DEBUG_INTERRUPTS
 392         PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->guest_ctrl.V_INTR_VECTOR, info->rip);
 393 #endif
 394         injecting_intr(info, irq, EXTERNAL_IRQ);
 395
 396         break;
 397       }
 398     case NMI:
 399       guest_ctrl->EVENTINJ.type = SVM_INJECTION_NMI;
 400       break;
 401     case EXCEPTION:
 402       {
 403         uint_t excp = get_intr_number(info);
 404
 405         guest_ctrl->EVENTINJ.type = SVM_INJECTION_EXCEPTION;
 406
 407         if (info->intr_state.excp_error_code_valid) {  //PAD
 408           guest_ctrl->EVENTINJ.error_code = info->intr_state.excp_error_code;
 409           guest_ctrl->EVENTINJ.ev = 1;
 410 #ifdef DEBUG_INTERRUPTS
 411           PrintDebug("Injecting error code %x\n", guest_ctrl->EVENTINJ.error_code);
 412 #endif
 413         }
 414
 415         guest_ctrl->EVENTINJ.vector = excp;
 416
 417         guest_ctrl->EVENTINJ.valid = 1;
 418 #ifdef DEBUG_INTERRUPTS
 419         PrintDebug("Injecting Interrupt %d (EIP=%x)\n", guest_ctrl->EVENTINJ.vector, info->rip);
 420 #endif
 421         injecting_intr(info, excp, EXCEPTION);
 422         break;
 423       }
 424     case SOFTWARE_INTR:
 425       guest_ctrl->EVENTINJ.type = SVM_INJECTION_SOFT_INTR;
 426       break;
 427     case VIRTUAL_INTR:
 428       guest_ctrl->EVENTINJ.type = SVM_INJECTION_VIRTUAL_INTR;
 429       break;
 430
 431     case INVALID_INTR:
 432     default:
 433       PrintError("Attempted to issue an invalid interrupt\n");
 434       return -1;
 435     }
 436
 437   } else {
 438 #ifdef DEBUG_INTERRUPTS
 439     PrintDebug("No interrupts/exceptions pending\n");
 440 #endif
 441   }
 442
 443   guest_state->cr0 = info->ctrl_regs.cr0;
 444   guest_state->cr2 = info->ctrl_regs.cr2;
 445   guest_state->cr3 = info->ctrl_regs.cr3;
 446   guest_state->cr4 = info->ctrl_regs.cr4;
 447   guest_state->dr6 = info->dbg_regs.dr6;
 448   guest_state->dr7 = info->dbg_regs.dr7;
 449   guest_ctrl->guest_ctrl.V_TPR = info->ctrl_regs.cr8 & 0xff;
 450   guest_state->rflags = info->ctrl_regs.rflags;
 451   guest_state->efer = info->ctrl_regs.efer;
 452
 453   guest_state->cpl = info->cpl;
 454
 455   guest_state->rax = info->vm_regs.rax;
 456   guest_state->rip = info->rip;
 457   guest_state->rsp = info->vm_regs.rsp;
 458
 459
 460   set_vmcb_segments((vmcb_t*)(info->vmm_data), &(info->segments));
 461
 462   if (exit_code == VMEXIT_INTR) {
 463     //PrintDebug("INTR ret IP = %x\n", guest_state->rip);
 464   }
 465
 466   return 0;
 467 }
 468
 469
 470
 471
 472 const uchar_t * vmexit_code_to_str(uint_t exit_code) {
 473   switch(exit_code) {
 474   case VMEXIT_CR0_READ:
 475     return VMEXIT_CR0_READ_STR;
 476   case VMEXIT_CR1_READ:
 477     return VMEXIT_CR1_READ_STR;
 478   case VMEXIT_CR2_READ:
 479     return VMEXIT_CR2_READ_STR;
 480   case VMEXIT_CR3_READ:
 481     return VMEXIT_CR3_READ_STR;
 482   case VMEXIT_CR4_READ:
 483     return VMEXIT_CR4_READ_STR;
 484   case VMEXIT_CR5_READ:
 485     return VMEXIT_CR5_READ_STR;
 486   case VMEXIT_CR6_READ:
 487     return VMEXIT_CR6_READ_STR;
 488   case VMEXIT_CR7_READ:
 489     return VMEXIT_CR7_READ_STR;
 490   case VMEXIT_CR8_READ:
 491     return VMEXIT_CR8_READ_STR;
 492   case VMEXIT_CR9_READ:
 493     return VMEXIT_CR9_READ_STR;
 494   case VMEXIT_CR10_READ:
 495     return VMEXIT_CR10_READ_STR;
 496   case VMEXIT_CR11_READ:
 497     return VMEXIT_CR11_READ_STR;
 498   case VMEXIT_CR12_READ:
 499     return VMEXIT_CR12_READ_STR;
 500   case VMEXIT_CR13_READ:
 501     return VMEXIT_CR13_READ_STR;
 502   case VMEXIT_CR14_READ:
 503     return VMEXIT_CR14_READ_STR;
 504   case VMEXIT_CR15_READ:
 505     return VMEXIT_CR15_READ_STR;
 506   case VMEXIT_CR0_WRITE:
 507     return VMEXIT_CR0_WRITE_STR;
 508   case VMEXIT_CR1_WRITE:
 509     return VMEXIT_CR1_WRITE_STR;
 510   case VMEXIT_CR2_WRITE:
 511     return VMEXIT_CR2_WRITE_STR;
 512   case VMEXIT_CR3_WRITE:
 513     return VMEXIT_CR3_WRITE_STR;
 514   case VMEXIT_CR4_WRITE:
 515     return VMEXIT_CR4_WRITE_STR;
 516   case VMEXIT_CR5_WRITE:
 517     return VMEXIT_CR5_WRITE_STR;
 518   case VMEXIT_CR6_WRITE:
 519     return VMEXIT_CR6_WRITE_STR;
 520   case VMEXIT_CR7_WRITE:
 521     return VMEXIT_CR7_WRITE_STR;
 522   case VMEXIT_CR8_WRITE:
 523     return VMEXIT_CR8_WRITE_STR;
 524   case VMEXIT_CR9_WRITE:
 525     return VMEXIT_CR9_WRITE_STR;
 526   case VMEXIT_CR10_WRITE:
 527     return VMEXIT_CR10_WRITE_STR;
 528   case VMEXIT_CR11_WRITE:
 529     return VMEXIT_CR11_WRITE_STR;
 530   case VMEXIT_CR12_WRITE:
 531     return VMEXIT_CR12_WRITE_STR;
 532   case VMEXIT_CR13_WRITE:
 533     return VMEXIT_CR13_WRITE_STR;
 534   case VMEXIT_CR14_WRITE:
 535     return VMEXIT_CR14_WRITE_STR;
 536   case VMEXIT_CR15_WRITE:
 537     return VMEXIT_CR15_WRITE_STR;
 538   case VMEXIT_DR0_READ:
 539     return VMEXIT_DR0_READ_STR;
 540   case VMEXIT_DR1_READ:
 541     return VMEXIT_DR1_READ_STR;
 542   case VMEXIT_DR2_READ:
 543     return VMEXIT_DR2_READ_STR;
 544   case VMEXIT_DR3_READ:
 545     return VMEXIT_DR3_READ_STR;
 546   case VMEXIT_DR4_READ:
 547     return VMEXIT_DR4_READ_STR;
 548   case VMEXIT_DR5_READ:
 549     return VMEXIT_DR5_READ_STR;
 550   case VMEXIT_DR6_READ:
 551     return VMEXIT_DR6_READ_STR;
 552   case VMEXIT_DR7_READ:
 553     return VMEXIT_DR7_READ_STR;
 554   case VMEXIT_DR8_READ:
 555     return VMEXIT_DR8_READ_STR;
 556   case VMEXIT_DR9_READ:
 557     return VMEXIT_DR9_READ_STR;
 558   case VMEXIT_DR10_READ:
 559     return VMEXIT_DR10_READ_STR;
 560   case VMEXIT_DR11_READ:
 561     return VMEXIT_DR11_READ_STR;
 562   case VMEXIT_DR12_READ:
 563     return VMEXIT_DR12_READ_STR;
 564   case VMEXIT_DR13_READ:
 565     return VMEXIT_DR13_READ_STR;
 566   case VMEXIT_DR14_READ:
 567     return VMEXIT_DR14_READ_STR;
 568   case VMEXIT_DR15_READ:
 569     return VMEXIT_DR15_READ_STR;
 570   case VMEXIT_DR0_WRITE:
 571     return VMEXIT_DR0_WRITE_STR;
 572   case VMEXIT_DR1_WRITE:
 573     return VMEXIT_DR1_WRITE_STR;
 574   case VMEXIT_DR2_WRITE:
 575     return VMEXIT_DR2_WRITE_STR;
 576   case VMEXIT_DR3_WRITE:
 577     return VMEXIT_DR3_WRITE_STR;
 578   case VMEXIT_DR4_WRITE:
 579     return VMEXIT_DR4_WRITE_STR;
 580   case VMEXIT_DR5_WRITE:
 581     return VMEXIT_DR5_WRITE_STR;
 582   case VMEXIT_DR6_WRITE:
 583     return VMEXIT_DR6_WRITE_STR;
 584   case VMEXIT_DR7_WRITE:
 585     return VMEXIT_DR7_WRITE_STR;
 586   case VMEXIT_DR8_WRITE:
 587     return VMEXIT_DR8_WRITE_STR;
 588   case VMEXIT_DR9_WRITE:
 589     return VMEXIT_DR9_WRITE_STR;
 590   case VMEXIT_DR10_WRITE:
 591     return VMEXIT_DR10_WRITE_STR;
 592   case VMEXIT_DR11_WRITE:
 593     return VMEXIT_DR11_WRITE_STR;
 594   case VMEXIT_DR12_WRITE:
 595     return VMEXIT_DR12_WRITE_STR;
 596   case VMEXIT_DR13_WRITE:
 597     return VMEXIT_DR13_WRITE_STR;
 598   case VMEXIT_DR14_WRITE:
 599     return VMEXIT_DR14_WRITE_STR;
 600   case VMEXIT_DR15_WRITE:
 601     return VMEXIT_DR15_WRITE_STR;
 602   case VMEXIT_EXCP0:
 603     return VMEXIT_EXCP0_STR;
 604   case VMEXIT_EXCP1:
 605     return VMEXIT_EXCP1_STR;
 606   case VMEXIT_EXCP2:
 607     return VMEXIT_EXCP2_STR;
 608   case VMEXIT_EXCP3:
 609     return VMEXIT_EXCP3_STR;
 610   case VMEXIT_EXCP4:
 611     return VMEXIT_EXCP4_STR;
 612   case VMEXIT_EXCP5:
 613     return VMEXIT_EXCP5_STR;
 614   case VMEXIT_EXCP6:
 615     return VMEXIT_EXCP6_STR;
 616   case VMEXIT_EXCP7:
 617     return VMEXIT_EXCP7_STR;
 618   case VMEXIT_EXCP8:
 619     return VMEXIT_EXCP8_STR;
 620   case VMEXIT_EXCP9:
 621     return VMEXIT_EXCP9_STR;
 622   case VMEXIT_EXCP10:
 623     return VMEXIT_EXCP10_STR;
 624   case VMEXIT_EXCP11:
 625     return VMEXIT_EXCP11_STR;
 626   case VMEXIT_EXCP12:
 627     return VMEXIT_EXCP12_STR;
 628   case VMEXIT_EXCP13:
 629     return VMEXIT_EXCP13_STR;
 630   case VMEXIT_EXCP14:
 631     return VMEXIT_EXCP14_STR;
 632   case VMEXIT_EXCP15:
 633     return VMEXIT_EXCP15_STR;
 634   case VMEXIT_EXCP16:
 635     return VMEXIT_EXCP16_STR;
 636   case VMEXIT_EXCP17:
 637     return VMEXIT_EXCP17_STR;
 638   case VMEXIT_EXCP18:
 639     return VMEXIT_EXCP18_STR;
 640   case VMEXIT_EXCP19:
 641     return VMEXIT_EXCP19_STR;
 642   case VMEXIT_EXCP20:
 643     return VMEXIT_EXCP20_STR;
 644   case VMEXIT_EXCP21:
 645     return VMEXIT_EXCP21_STR;
 646   case VMEXIT_EXCP22:
 647     return VMEXIT_EXCP22_STR;
 648   case VMEXIT_EXCP23:
 649     return VMEXIT_EXCP23_STR;
 650   case VMEXIT_EXCP24:
 651     return VMEXIT_EXCP24_STR;
 652   case VMEXIT_EXCP25:
 653     return VMEXIT_EXCP25_STR;
 654   case VMEXIT_EXCP26:
 655     return VMEXIT_EXCP26_STR;
 656   case VMEXIT_EXCP27:
 657     return VMEXIT_EXCP27_STR;
 658   case VMEXIT_EXCP28:
 659     return VMEXIT_EXCP28_STR;
 660   case VMEXIT_EXCP29:
 661     return VMEXIT_EXCP29_STR;
 662   case VMEXIT_EXCP30:
 663     return VMEXIT_EXCP30_STR;
 664   case VMEXIT_EXCP31:
 665     return VMEXIT_EXCP31_STR;
 666   case VMEXIT_INTR:
 667     return VMEXIT_INTR_STR;
 668   case VMEXIT_NMI:
 669     return VMEXIT_NMI_STR;
 670   case VMEXIT_SMI:
 671     return VMEXIT_SMI_STR;
 672   case VMEXIT_INIT:
 673     return VMEXIT_INIT_STR;
 674   case VMEXIT_VINITR:
 675     return VMEXIT_VINITR_STR;
 676   case VMEXIT_CR0_SEL_WRITE:
 677     return VMEXIT_CR0_SEL_WRITE_STR;
 678   case VMEXIT_IDTR_READ:
 679     return VMEXIT_IDTR_READ_STR;
 680   case VMEXIT_GDTR_READ:
 681     return VMEXIT_GDTR_READ_STR;
 682   case VMEXIT_LDTR_READ:
 683     return VMEXIT_LDTR_READ_STR;
 684   case VMEXIT_TR_READ:
 685     return VMEXIT_TR_READ_STR;
 686   case VMEXIT_IDTR_WRITE:
 687     return VMEXIT_IDTR_WRITE_STR;
 688   case VMEXIT_GDTR_WRITE:
 689     return VMEXIT_GDTR_WRITE_STR;
 690   case VMEXIT_LDTR_WRITE:
 691     return VMEXIT_LDTR_WRITE_STR;
 692   case VMEXIT_TR_WRITE:
 693     return VMEXIT_TR_WRITE_STR;
 694   case VMEXIT_RDTSC:
 695     return VMEXIT_RDTSC_STR;
 696   case VMEXIT_RDPMC:
 697     return VMEXIT_RDPMC_STR;
 698   case VMEXIT_PUSHF:
 699     return VMEXIT_PUSHF_STR;
 700   case VMEXIT_POPF:
 701     return VMEXIT_POPF_STR;
 702   case VMEXIT_CPUID:
 703     return VMEXIT_CPUID_STR;
 704   case VMEXIT_RSM:
 705     return VMEXIT_RSM_STR;
 706   case VMEXIT_IRET:
 707     return VMEXIT_IRET_STR;
 708   case VMEXIT_SWINT:
 709     return VMEXIT_SWINT_STR;
 710   case VMEXIT_INVD:
 711     return VMEXIT_INVD_STR;
 712   case VMEXIT_PAUSE:
 713     return VMEXIT_PAUSE_STR;
 714   case VMEXIT_HLT:
 715     return VMEXIT_HLT_STR;
 716   case VMEXIT_INVLPG:
 717     return VMEXIT_INVLPG_STR;
 718   case VMEXIT_INVLPGA:
 719     return VMEXIT_INVLPGA_STR;
 720   case VMEXIT_IOIO:
 721     return VMEXIT_IOIO_STR;
 722   case VMEXIT_MSR:
 723     return VMEXIT_MSR_STR;
 724   case VMEXIT_TASK_SWITCH:
 725     return VMEXIT_TASK_SWITCH_STR;
 726   case VMEXIT_FERR_FREEZE:
 727     return VMEXIT_FERR_FREEZE_STR;
 728   case VMEXIT_SHUTDOWN:
 729     return VMEXIT_SHUTDOWN_STR;
 730   case VMEXIT_VMRUN:
 731     return VMEXIT_VMRUN_STR;
 732   case VMEXIT_VMMCALL:
 733     return VMEXIT_VMMCALL_STR;
 734   case VMEXIT_VMLOAD:
 735     return VMEXIT_VMLOAD_STR;
 736   case VMEXIT_VMSAVE:
 737     return VMEXIT_VMSAVE_STR;
 738   case VMEXIT_STGI:
 739     return VMEXIT_STGI_STR;
 740   case VMEXIT_CLGI:
 741     return VMEXIT_CLGI_STR;
 742   case VMEXIT_SKINIT:
 743     return VMEXIT_SKINIT_STR;
 744   case VMEXIT_RDTSCP:
 745     return VMEXIT_RDTSCP_STR;
 746   case VMEXIT_ICEBP:
 747     return VMEXIT_ICEBP_STR;
 748   case VMEXIT_WBINVD:
 749     return VMEXIT_WBINVD_STR;
 750   case VMEXIT_MONITOR:
 751     return VMEXIT_MONITOR_STR;
 752   case VMEXIT_MWAIT:
 753     return VMEXIT_MWAIT_STR;
 754   case VMEXIT_MWAIT_CONDITIONAL:
 755     return VMEXIT_MWAIT_CONDITIONAL_STR;
 756   case VMEXIT_NPF:
 757     return VMEXIT_NPF_STR;
 758   case VMEXIT_INVALID_VMCB:
 759     return VMEXIT_INVALID_VMCB_STR;
 760   }
 761   return NULL;
 762 }