EMAll.cpp@ 66891

Last change on this file since 66891 was 66848, checked in by vboxsync, 8 years ago
VMM: use RT_LO/HI_U32 at certain places
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1	/* $Id: EMAll.cpp 66848 2017-05-09 13:04:57Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor(/Manager) - All contexts
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define VBOX_WITH_IEM
23	#define LOG_GROUP LOG_GROUP_EM
24	#include <VBox/vmm/em.h>
25	#include <VBox/vmm/mm.h>
26	#include <VBox/vmm/selm.h>
27	#include <VBox/vmm/patm.h>
28	#include <VBox/vmm/csam.h>
29	#include <VBox/vmm/pgm.h>
30	#ifdef VBOX_WITH_IEM
31	# include <VBox/vmm/iem.h>
32	#endif
33	#include <VBox/vmm/iom.h>
34	#include <VBox/vmm/stam.h>
35	#include "EMInternal.h"
36	#include <VBox/vmm/vm.h>
37	#include <VBox/vmm/vmm.h>
38	#include <VBox/vmm/hm.h>
39	#include <VBox/vmm/tm.h>
40	#include <VBox/vmm/pdmapi.h>
41	#include <VBox/param.h>
42	#include <VBox/err.h>
43	#include <VBox/dis.h>
44	#include <VBox/disopcode.h>
45	#include <VBox/log.h>
46	#include <iprt/assert.h>
47	#include <iprt/asm.h>
48	#include <iprt/string.h>
49
50	#ifdef VBOX_WITH_IEM
51	//# define VBOX_COMPARE_IEM_AND_EM /* debugging... */
52	//# define VBOX_SAME_AS_EM
53	//# define VBOX_COMPARE_IEM_LAST
54	#endif
55
56	#ifdef VBOX_WITH_RAW_RING1
57	# define EM_EMULATE_SMSW
58	#endif
59
60
61	/*********************************************************************************************************************************
62	* Defined Constants And Macros *
63	*********************************************************************************************************************************/
64	/** @def EM_ASSERT_FAULT_RETURN
65	* Safety check.
66	*
67	* Could in theory misfire on a cross page boundary access...
68	*
69	* Currently disabled because the CSAM (+ PATM) patch monitoring occasionally
70	* turns up an alias page instead of the original faulting one and annoying the
71	* heck out of anyone running a debug build. See @bugref{2609} and @bugref{1931}.
72	*/
73	#if 0
74	# define EM_ASSERT_FAULT_RETURN(expr, rc) AssertReturn(expr, rc)
75	#else
76	# define EM_ASSERT_FAULT_RETURN(expr, rc) do { } while (0)
77	#endif
78
79
80	/*********************************************************************************************************************************
81	* Internal Functions *
82	*********************************************************************************************************************************/
83	#if !defined(VBOX_WITH_IEM) \|\| defined(VBOX_COMPARE_IEM_AND_EM)
84	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPUOuter(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
85	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize);
86	#endif
87
88
89	/*********************************************************************************************************************************
90	* Global Variables *
91	*********************************************************************************************************************************/
92	#ifdef VBOX_COMPARE_IEM_AND_EM
93	static const uint32_t g_fInterestingFFs = VMCPU_FF_TO_R3
94	\| VMCPU_FF_CSAM_PENDING_ACTION \| VMCPU_FF_CSAM_SCAN_PAGE \| VMCPU_FF_INHIBIT_INTERRUPTS
95	\| VMCPU_FF_SELM_SYNC_LDT \| VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_TSS \| VMCPU_FF_TRPM_SYNC_IDT
96	\| VMCPU_FF_TLB_FLUSH \| VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL;
97	static uint32_t g_fIncomingFFs;
98	static CPUMCTX g_IncomingCtx;
99	static bool g_fIgnoreRaxRdx = false;
100
101	static uint32_t g_fEmFFs;
102	static CPUMCTX g_EmCtx;
103	static uint8_t g_abEmWrote[256];
104	static size_t g_cbEmWrote;
105
106	static uint32_t g_fIemFFs;
107	static CPUMCTX g_IemCtx;
108	extern uint8_t g_abIemWrote[256];
109	#if defined(VBOX_COMPARE_IEM_FIRST) \|\| defined(VBOX_COMPARE_IEM_LAST)
110	extern size_t g_cbIemWrote;
111	#else
112	static size_t g_cbIemWrote;
113	#endif
114	#endif
115
116
117	/**
118	* Get the current execution manager status.
119	*
120	* @returns Current status.
121	* @param pVCpu The cross context virtual CPU structure.
122	*/
123	VMM_INT_DECL(EMSTATE) EMGetState(PVMCPU pVCpu)
124	{
125	return pVCpu->em.s.enmState;
126	}
127
128
129	/**
130	* Sets the current execution manager status. (use only when you know what you're doing!)
131	*
132	* @param pVCpu The cross context virtual CPU structure.
133	* @param enmNewState The new state, EMSTATE_WAIT_SIPI or EMSTATE_HALTED.
134	*/
135	VMM_INT_DECL(void) EMSetState(PVMCPU pVCpu, EMSTATE enmNewState)
136	{
137	/* Only allowed combination: */
138	Assert(pVCpu->em.s.enmState == EMSTATE_WAIT_SIPI && enmNewState == EMSTATE_HALTED);
139	pVCpu->em.s.enmState = enmNewState;
140	}
141
142
143	/**
144	* Sets the PC for which interrupts should be inhibited.
145	*
146	* @param pVCpu The cross context virtual CPU structure.
147	* @param PC The PC.
148	*/
149	VMMDECL(void) EMSetInhibitInterruptsPC(PVMCPU pVCpu, RTGCUINTPTR PC)
150	{
151	pVCpu->em.s.GCPtrInhibitInterrupts = PC;
152	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
153	}
154
155
156	/**
157	* Gets the PC for which interrupts should be inhibited.
158	*
159	* There are a few instructions which inhibits or delays interrupts
160	* for the instruction following them. These instructions are:
161	* - STI
162	* - MOV SS, r/m16
163	* - POP SS
164	*
165	* @returns The PC for which interrupts should be inhibited.
166	* @param pVCpu The cross context virtual CPU structure.
167	*
168	*/
169	VMMDECL(RTGCUINTPTR) EMGetInhibitInterruptsPC(PVMCPU pVCpu)
170	{
171	return pVCpu->em.s.GCPtrInhibitInterrupts;
172	}
173
174
175	/**
176	* Prepare an MWAIT - essentials of the MONITOR instruction.
177	*
178	* @returns VINF_SUCCESS
179	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
180	* @param rax The content of RAX.
181	* @param rcx The content of RCX.
182	* @param rdx The content of RDX.
183	* @param GCPhys The physical address corresponding to rax.
184	*/
185	VMM_INT_DECL(int) EMMonitorWaitPrepare(PVMCPU pVCpu, uint64_t rax, uint64_t rcx, uint64_t rdx, RTGCPHYS GCPhys)
186	{
187	pVCpu->em.s.MWait.uMonitorRAX = rax;
188	pVCpu->em.s.MWait.uMonitorRCX = rcx;
189	pVCpu->em.s.MWait.uMonitorRDX = rdx;
190	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_MONITOR_ACTIVE;
191	/** @todo Make use of GCPhys. */
192	NOREF(GCPhys);
193	/** @todo Complete MONITOR implementation. */
194	return VINF_SUCCESS;
195	}
196
197
198	/**
199	* Checks if the monitor hardware is armed / active.
200	*
201	* @returns true if armed, false otherwise.
202	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
203	*/
204	VMM_INT_DECL(bool) EMMonitorIsArmed(PVMCPU pVCpu)
205	{
206	return RT_BOOL(pVCpu->em.s.MWait.fWait & EMMWAIT_FLAG_MONITOR_ACTIVE);
207	}
208
209
210	/**
211	* Performs an MWAIT.
212	*
213	* @returns VINF_SUCCESS
214	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
215	* @param rax The content of RAX.
216	* @param rcx The content of RCX.
217	*/
218	VMM_INT_DECL(int) EMMonitorWaitPerform(PVMCPU pVCpu, uint64_t rax, uint64_t rcx)
219	{
220	pVCpu->em.s.MWait.uMWaitRAX = rax;
221	pVCpu->em.s.MWait.uMWaitRCX = rcx;
222	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_ACTIVE;
223	if (rcx)
224	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_BREAKIRQIF0;
225	else
226	pVCpu->em.s.MWait.fWait &= ~EMMWAIT_FLAG_BREAKIRQIF0;
227	/** @todo not completely correct?? */
228	return VINF_EM_HALT;
229	}
230
231
232
233	/**
234	* Determine if we should continue execution in HM after encountering an mwait
235	* instruction.
236	*
237	* Clears MWAIT flags if returning @c true.
238	*
239	* @returns true if we should continue, false if we should halt.
240	* @param pVCpu The cross context virtual CPU structure.
241	* @param pCtx Current CPU context.
242	*/
243	VMM_INT_DECL(bool) EMMonitorWaitShouldContinue(PVMCPU pVCpu, PCPUMCTX pCtx)
244	{
245	if ( pCtx->eflags.Bits.u1IF
246	\|\| ( (pVCpu->em.s.MWait.fWait & (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0))
247	== (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0)) )
248	{
249	if (VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_UPDATE_APIC \| VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)))
250	{
251	pVCpu->em.s.MWait.fWait &= ~(EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0);
252	return true;
253	}
254	}
255
256	return false;
257	}
258
259
260	/**
261	* Determine if we should continue execution in HM after encountering a hlt
262	* instruction.
263	*
264	* @returns true if we should continue, false if we should halt.
265	* @param pVCpu The cross context virtual CPU structure.
266	* @param pCtx Current CPU context.
267	*/
268	VMM_INT_DECL(bool) EMShouldContinueAfterHalt(PVMCPU pVCpu, PCPUMCTX pCtx)
269	{
270	if (pCtx->eflags.Bits.u1IF)
271	return !!VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_UPDATE_APIC \| VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC));
272	return false;
273	}
274
275
276	/**
277	* Unhalts and wakes up the given CPU.
278	*
279	* This is an API for assisting the KVM hypercall API in implementing KICK_CPU.
280	* It sets VMCPU_FF_UNHALT for @a pVCpuDst and makes sure it is woken up. If
281	* the CPU isn't currently in a halt, the next HLT instruction it executes will
282	* be affected.
283	*
284	* @returns GVMMR0SchedWakeUpEx result or VINF_SUCCESS depending on context.
285	* @param pVM The cross context VM structure.
286	* @param pVCpuDst The cross context virtual CPU structure of the
287	* CPU to unhalt and wake up. This is usually not the
288	* same as the caller.
289	* @thread EMT
290	*/
291	VMM_INT_DECL(int) EMUnhaltAndWakeUp(PVM pVM, PVMCPU pVCpuDst)
292	{
293	/*
294	* Flag the current(/next) HLT to unhalt immediately.
295	*/
296	VMCPU_FF_SET(pVCpuDst, VMCPU_FF_UNHALT);
297
298	/*
299	* Wake up the EMT (technically should be abstracted by VMM/VMEmt, but
300	* just do it here for now).
301	*/
302	#ifdef IN_RING0
303	/* We might be here with preemption disabled or enabled (i.e. depending on
304	thread-context hooks being used), so don't try obtaining the GVMMR0 used
305	lock here. See @bugref{7270#c148}. */
306	int rc = GVMMR0SchedWakeUpEx(pVM, pVCpuDst->idCpu, false /* fTakeUsedLock */);
307	AssertRC(rc);
308
309	#elif defined(IN_RING3)
310	int rc = SUPR3CallVMMR0(pVM->pVMR0, pVCpuDst->idCpu, VMMR0_DO_GVMM_SCHED_WAKE_UP, NULL /* pvArg */);
311	AssertRC(rc);
312
313	#else
314	/* Nothing to do for raw-mode, shouldn't really be used by raw-mode guests anyway. */
315	Assert(pVM->cCpus == 1); NOREF(pVM);
316	int rc = VINF_SUCCESS;
317	#endif
318	return rc;
319	}
320
321
322	/**
323	* Locks REM execution to a single VCPU.
324	*
325	* @param pVM The cross context VM structure.
326	*/
327	VMMDECL(void) EMRemLock(PVM pVM)
328	{
329	#ifdef VBOX_WITH_REM
330	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
331	return; /* early init */
332
333	Assert(!PGMIsLockOwner(pVM));
334	Assert(!IOMIsLockWriteOwner(pVM));
335	int rc = PDMCritSectEnter(&pVM->em.s.CritSectREM, VERR_SEM_BUSY);
336	AssertRCSuccess(rc);
337	#else
338	RT_NOREF(pVM);
339	#endif
340	}
341
342
343	/**
344	* Unlocks REM execution
345	*
346	* @param pVM The cross context VM structure.
347	*/
348	VMMDECL(void) EMRemUnlock(PVM pVM)
349	{
350	#ifdef VBOX_WITH_REM
351	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
352	return; /* early init */
353
354	PDMCritSectLeave(&pVM->em.s.CritSectREM);
355	#else
356	RT_NOREF(pVM);
357	#endif
358	}
359
360
361	/**
362	* Check if this VCPU currently owns the REM lock.
363	*
364	* @returns bool owner/not owner
365	* @param pVM The cross context VM structure.
366	*/
367	VMMDECL(bool) EMRemIsLockOwner(PVM pVM)
368	{
369	#ifdef VBOX_WITH_REM
370	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
371	return true; /* early init */
372
373	return PDMCritSectIsOwner(&pVM->em.s.CritSectREM);
374	#else
375	RT_NOREF(pVM);
376	return true;
377	#endif
378	}
379
380
381	/**
382	* Try to acquire the REM lock.
383	*
384	* @returns VBox status code
385	* @param pVM The cross context VM structure.
386	*/
387	VMM_INT_DECL(int) EMRemTryLock(PVM pVM)
388	{
389	#ifdef VBOX_WITH_REM
390	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
391	return VINF_SUCCESS; /* early init */
392
393	return PDMCritSectTryEnter(&pVM->em.s.CritSectREM);
394	#else
395	RT_NOREF(pVM);
396	return VINF_SUCCESS;
397	#endif
398	}
399
400
401	/**
402	* @callback_method_impl{FNDISREADBYTES}
403	*/
404	static DECLCALLBACK(int) emReadBytes(PDISCPUSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
405	{
406	PVMCPU pVCpu = (PVMCPU)pDis->pvUser;
407	#if defined(VBOX_WITH_RAW_MODE) && (defined(IN_RC) \|\| defined(IN_RING3))
408	PVM pVM = pVCpu->CTX_SUFF(pVM);
409	#endif
410	RTUINTPTR uSrcAddr = pDis->uInstrAddr + offInstr;
411	int rc;
412
413	/*
414	* Figure how much we can or must read.
415	*/
416	size_t cbToRead = PAGE_SIZE - (uSrcAddr & PAGE_OFFSET_MASK);
417	if (cbToRead > cbMaxRead)
418	cbToRead = cbMaxRead;
419	else if (cbToRead < cbMinRead)
420	cbToRead = cbMinRead;
421
422	#if defined(VBOX_WITH_RAW_MODE) && (defined(IN_RC) \|\| defined(IN_RING3))
423	/*
424	* We might be called upon to interpret an instruction in a patch.
425	*/
426	if (PATMIsPatchGCAddr(pVM, uSrcAddr))
427	{
428	# ifdef IN_RC
429	memcpy(&pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
430	# else
431	memcpy(&pDis->abInstr[offInstr], PATMR3GCPtrToHCPtr(pVM, uSrcAddr), cbToRead);
432	# endif
433	rc = VINF_SUCCESS;
434	}
435	else
436	#endif
437	{
438	# ifdef IN_RC
439	/*
440	* Try access it thru the shadow page tables first. Fall back on the
441	* slower PGM method if it fails because the TLB or page table was
442	* modified recently.
443	*/
444	rc = MMGCRamRead(pVCpu->pVMRC, &pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
445	if (rc == VERR_ACCESS_DENIED && cbToRead > cbMinRead)
446	{
447	cbToRead = cbMinRead;
448	rc = MMGCRamRead(pVCpu->pVMRC, &pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
449	}
450	if (rc == VERR_ACCESS_DENIED)
451	#endif
452	{
453	rc = PGMPhysSimpleReadGCPtr(pVCpu, &pDis->abInstr[offInstr], uSrcAddr, cbToRead);
454	if (RT_FAILURE(rc))
455	{
456	if (cbToRead > cbMinRead)
457	{
458	cbToRead = cbMinRead;
459	rc = PGMPhysSimpleReadGCPtr(pVCpu, &pDis->abInstr[offInstr], uSrcAddr, cbToRead);
460	}
461	if (RT_FAILURE(rc))
462	{
463	#ifndef IN_RC
464	/*
465	* If we fail to find the page via the guest's page tables
466	* we invalidate the page in the host TLB (pertaining to
467	* the guest in the NestedPaging case). See @bugref{6043}.
468	*/
469	if (rc == VERR_PAGE_TABLE_NOT_PRESENT \|\| rc == VERR_PAGE_NOT_PRESENT)
470	{
471	HMInvalidatePage(pVCpu, uSrcAddr);
472	if (((uSrcAddr + cbToRead - 1) >> PAGE_SHIFT) != (uSrcAddr >> PAGE_SHIFT))
473	HMInvalidatePage(pVCpu, uSrcAddr + cbToRead - 1);
474	}
475	#endif
476	}
477	}
478	}
479	}
480
481	pDis->cbCachedInstr = offInstr + (uint8_t)cbToRead;
482	return rc;
483	}
484
485
486	#if !defined(VBOX_WITH_IEM) \|\| defined(VBOX_COMPARE_IEM_AND_EM)
487	DECLINLINE(int) emDisCoreOne(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, RTGCUINTPTR InstrGC, uint32_t *pOpsize)
488	{
489	NOREF(pVM);
490	return DISInstrWithReader(InstrGC, (DISCPUMODE)pDis->uCpuMode, emReadBytes, pVCpu, pDis, pOpsize);
491	}
492	#endif
493
494
495	/**
496	* Disassembles the current instruction.
497	*
498	* @returns VBox status code, see SELMToFlatEx and EMInterpretDisasOneEx for
499	* details.
500	*
501	* @param pVM The cross context VM structure.
502	* @param pVCpu The cross context virtual CPU structure.
503	* @param pDis Where to return the parsed instruction info.
504	* @param pcbInstr Where to return the instruction size. (optional)
505	*/
506	VMM_INT_DECL(int) EMInterpretDisasCurrent(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, unsigned *pcbInstr)
507	{
508	PCPUMCTXCORE pCtxCore = CPUMCTX2CORE(CPUMQueryGuestCtxPtr(pVCpu));
509	RTGCPTR GCPtrInstr;
510	#if 0
511	int rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pCtxCore, pCtxCore->rip, 0, &GCPtrInstr);
512	#else
513	/** @todo Get the CPU mode as well while we're at it! */
514	int rc = SELMValidateAndConvertCSAddr(pVCpu, pCtxCore->eflags, pCtxCore->ss.Sel, pCtxCore->cs.Sel, &pCtxCore->cs,
515	pCtxCore->rip, &GCPtrInstr);
516	#endif
517	if (RT_FAILURE(rc))
518	{
519	Log(("EMInterpretDisasOne: Failed to convert %RTsel:%RGv (cpl=%d) - rc=%Rrc !!\n",
520	pCtxCore->cs.Sel, (RTGCPTR)pCtxCore->rip, pCtxCore->ss.Sel & X86_SEL_RPL, rc));
521	return rc;
522	}
523	return EMInterpretDisasOneEx(pVM, pVCpu, (RTGCUINTPTR)GCPtrInstr, pCtxCore, pDis, pcbInstr);
524	}
525
526
527	/**
528	* Disassembles one instruction.
529	*
530	* This is used by internally by the interpreter and by trap/access handlers.
531	*
532	* @returns VBox status code.
533	*
534	* @param pVM The cross context VM structure.
535	* @param pVCpu The cross context virtual CPU structure.
536	* @param GCPtrInstr The flat address of the instruction.
537	* @param pCtxCore The context core (used to determine the cpu mode).
538	* @param pDis Where to return the parsed instruction info.
539	* @param pcbInstr Where to return the instruction size. (optional)
540	*/
541	VMM_INT_DECL(int) EMInterpretDisasOneEx(PVM pVM, PVMCPU pVCpu, RTGCUINTPTR GCPtrInstr, PCCPUMCTXCORE pCtxCore,
542	PDISCPUSTATE pDis, unsigned *pcbInstr)
543	{
544	NOREF(pVM);
545	Assert(pCtxCore == CPUMGetGuestCtxCore(pVCpu)); NOREF(pCtxCore);
546	DISCPUMODE enmCpuMode = CPUMGetGuestDisMode(pVCpu);
547	/** @todo Deal with too long instruction (=> \#GP), opcode read errors (=>
548	* \#PF, \#GP, \#??), undefined opcodes (=> \#UD), and such. */
549	int rc = DISInstrWithReader(GCPtrInstr, enmCpuMode, emReadBytes, pVCpu, pDis, pcbInstr);
550	if (RT_SUCCESS(rc))
551	return VINF_SUCCESS;
552	AssertMsg(rc == VERR_PAGE_NOT_PRESENT \|\| rc == VERR_PAGE_TABLE_NOT_PRESENT, ("DISCoreOne failed to GCPtrInstr=%RGv rc=%Rrc\n", GCPtrInstr, rc));
553	return rc;
554	}
555
556
557	#if defined(VBOX_COMPARE_IEM_FIRST) \|\| defined(VBOX_COMPARE_IEM_LAST)
558	static void emCompareWithIem(PVMCPU pVCpu, PCCPUMCTX pEmCtx, PCCPUMCTX pIemCtx,
559	VBOXSTRICTRC rcEm, VBOXSTRICTRC rcIem,
560	uint32_t cbEm, uint32_t cbIem)
561	{
562	/* Quick compare. */
563	if ( rcEm == rcIem
564	&& cbEm == cbIem
565	&& g_cbEmWrote == g_cbIemWrote
566	&& memcmp(g_abIemWrote, g_abEmWrote, g_cbIemWrote) == 0
567	&& memcmp(pIemCtx, pEmCtx, sizeof(*pIemCtx)) == 0
568	&& (g_fEmFFs & g_fInterestingFFs) == (g_fIemFFs & g_fInterestingFFs)
569	)
570	return;
571
572	/* Report exact differences. */
573	RTLogPrintf("! EM and IEM differs at %04x:%08RGv !\n", g_IncomingCtx.cs.Sel, g_IncomingCtx.rip);
574	if (rcEm != rcIem)
575	RTLogPrintf(" * rcIem=%Rrc rcEm=%Rrc\n", VBOXSTRICTRC_VAL(rcIem), VBOXSTRICTRC_VAL(rcEm));
576	else if (cbEm != cbIem)
577	RTLogPrintf(" * cbIem=%#x cbEm=%#x\n", cbIem, cbEm);
578
579	if (RT_SUCCESS(rcEm) && RT_SUCCESS(rcIem))
580	{
581	if (g_cbIemWrote != g_cbEmWrote)
582	RTLogPrintf("!! g_cbIemWrote=%#x g_cbEmWrote=%#x\n", g_cbIemWrote, g_cbEmWrote);
583	else if (memcmp(g_abIemWrote, g_abEmWrote, g_cbIemWrote))
584	{
585	RTLogPrintf("!! IemWrote %.*Rhxs\n", RT_MIN(RT_MAX(1, g_cbIemWrote), 64), g_abIemWrote);
586	RTLogPrintf("!! EemWrote %.*Rhxs\n", RT_MIN(RT_MAX(1, g_cbIemWrote), 64), g_abIemWrote);
587	}
588
589	if ((g_fEmFFs & g_fInterestingFFs) != (g_fIemFFs & g_fInterestingFFs))
590	RTLogPrintf("!! g_fIemFFs=%#x g_fEmFFs=%#x (diff=%#x)\n", g_fIemFFs & g_fInterestingFFs,
591	g_fEmFFs & g_fInterestingFFs, (g_fIemFFs ^ g_fEmFFs) & g_fInterestingFFs);
592
593	# define CHECK_FIELD(a_Field) \
594	do \
595	{ \
596	if (pEmCtx->a_Field != pIemCtx->a_Field) \
597	{ \
598	switch (sizeof(pEmCtx->a_Field)) \
599	{ \
600	case 1: RTLogPrintf("!! %8s differs - iem=%02x - em=%02x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
601	case 2: RTLogPrintf("!! %8s differs - iem=%04x - em=%04x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
602	case 4: RTLogPrintf("!! %8s differs - iem=%08x - em=%08x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
603	case 8: RTLogPrintf("!! %8s differs - iem=%016llx - em=%016llx\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
604	default: RTLogPrintf("!! %8s differs\n", #a_Field); break; \
605	} \
606	cDiffs++; \
607	} \
608	} while (0)
609
610	# define CHECK_BIT_FIELD(a_Field) \
611	do \
612	{ \
613	if (pEmCtx->a_Field != pIemCtx->a_Field) \
614	{ \
615	RTLogPrintf("!! %8s differs - iem=%02x - em=%02x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); \
616	cDiffs++; \
617	} \
618	} while (0)
619
620	# define CHECK_SEL(a_Sel) \
621	do \
622	{ \
623	CHECK_FIELD(a_Sel.Sel); \
624	CHECK_FIELD(a_Sel.Attr.u); \
625	CHECK_FIELD(a_Sel.u64Base); \
626	CHECK_FIELD(a_Sel.u32Limit); \
627	CHECK_FIELD(a_Sel.fFlags); \
628	} while (0)
629
630	unsigned cDiffs = 0;
631	if (memcmp(&pEmCtx->fpu, &pIemCtx->fpu, sizeof(pIemCtx->fpu)))
632	{
633	RTLogPrintf(" the FPU state differs\n");
634	cDiffs++;
635	CHECK_FIELD(fpu.FCW);
636	CHECK_FIELD(fpu.FSW);
637	CHECK_FIELD(fpu.FTW);
638	CHECK_FIELD(fpu.FOP);
639	CHECK_FIELD(fpu.FPUIP);
640	CHECK_FIELD(fpu.CS);
641	CHECK_FIELD(fpu.Rsrvd1);
642	CHECK_FIELD(fpu.FPUDP);
643	CHECK_FIELD(fpu.DS);
644	CHECK_FIELD(fpu.Rsrvd2);
645	CHECK_FIELD(fpu.MXCSR);
646	CHECK_FIELD(fpu.MXCSR_MASK);
647	CHECK_FIELD(fpu.aRegs[0].au64[0]); CHECK_FIELD(fpu.aRegs[0].au64[1]);
648	CHECK_FIELD(fpu.aRegs[1].au64[0]); CHECK_FIELD(fpu.aRegs[1].au64[1]);
649	CHECK_FIELD(fpu.aRegs[2].au64[0]); CHECK_FIELD(fpu.aRegs[2].au64[1]);
650	CHECK_FIELD(fpu.aRegs[3].au64[0]); CHECK_FIELD(fpu.aRegs[3].au64[1]);
651	CHECK_FIELD(fpu.aRegs[4].au64[0]); CHECK_FIELD(fpu.aRegs[4].au64[1]);
652	CHECK_FIELD(fpu.aRegs[5].au64[0]); CHECK_FIELD(fpu.aRegs[5].au64[1]);
653	CHECK_FIELD(fpu.aRegs[6].au64[0]); CHECK_FIELD(fpu.aRegs[6].au64[1]);
654	CHECK_FIELD(fpu.aRegs[7].au64[0]); CHECK_FIELD(fpu.aRegs[7].au64[1]);
655	CHECK_FIELD(fpu.aXMM[ 0].au64[0]); CHECK_FIELD(fpu.aXMM[ 0].au64[1]);
656	CHECK_FIELD(fpu.aXMM[ 1].au64[0]); CHECK_FIELD(fpu.aXMM[ 1].au64[1]);
657	CHECK_FIELD(fpu.aXMM[ 2].au64[0]); CHECK_FIELD(fpu.aXMM[ 2].au64[1]);
658	CHECK_FIELD(fpu.aXMM[ 3].au64[0]); CHECK_FIELD(fpu.aXMM[ 3].au64[1]);
659	CHECK_FIELD(fpu.aXMM[ 4].au64[0]); CHECK_FIELD(fpu.aXMM[ 4].au64[1]);
660	CHECK_FIELD(fpu.aXMM[ 5].au64[0]); CHECK_FIELD(fpu.aXMM[ 5].au64[1]);
661	CHECK_FIELD(fpu.aXMM[ 6].au64[0]); CHECK_FIELD(fpu.aXMM[ 6].au64[1]);
662	CHECK_FIELD(fpu.aXMM[ 7].au64[0]); CHECK_FIELD(fpu.aXMM[ 7].au64[1]);
663	CHECK_FIELD(fpu.aXMM[ 8].au64[0]); CHECK_FIELD(fpu.aXMM[ 8].au64[1]);
664	CHECK_FIELD(fpu.aXMM[ 9].au64[0]); CHECK_FIELD(fpu.aXMM[ 9].au64[1]);
665	CHECK_FIELD(fpu.aXMM[10].au64[0]); CHECK_FIELD(fpu.aXMM[10].au64[1]);
666	CHECK_FIELD(fpu.aXMM[11].au64[0]); CHECK_FIELD(fpu.aXMM[11].au64[1]);
667	CHECK_FIELD(fpu.aXMM[12].au64[0]); CHECK_FIELD(fpu.aXMM[12].au64[1]);
668	CHECK_FIELD(fpu.aXMM[13].au64[0]); CHECK_FIELD(fpu.aXMM[13].au64[1]);
669	CHECK_FIELD(fpu.aXMM[14].au64[0]); CHECK_FIELD(fpu.aXMM[14].au64[1]);
670	CHECK_FIELD(fpu.aXMM[15].au64[0]); CHECK_FIELD(fpu.aXMM[15].au64[1]);
671	for (unsigned i = 0; i < RT_ELEMENTS(pEmCtx->fpu.au32RsrvdRest); i++)
672	CHECK_FIELD(fpu.au32RsrvdRest[i]);
673	}
674	CHECK_FIELD(rip);
675	if (pEmCtx->rflags.u != pIemCtx->rflags.u)
676	{
677	RTLogPrintf("!! rflags differs - iem=%08llx em=%08llx\n", pIemCtx->rflags.u, pEmCtx->rflags.u);
678	CHECK_BIT_FIELD(rflags.Bits.u1CF);
679	CHECK_BIT_FIELD(rflags.Bits.u1Reserved0);
680	CHECK_BIT_FIELD(rflags.Bits.u1PF);
681	CHECK_BIT_FIELD(rflags.Bits.u1Reserved1);
682	CHECK_BIT_FIELD(rflags.Bits.u1AF);
683	CHECK_BIT_FIELD(rflags.Bits.u1Reserved2);
684	CHECK_BIT_FIELD(rflags.Bits.u1ZF);
685	CHECK_BIT_FIELD(rflags.Bits.u1SF);
686	CHECK_BIT_FIELD(rflags.Bits.u1TF);
687	CHECK_BIT_FIELD(rflags.Bits.u1IF);
688	CHECK_BIT_FIELD(rflags.Bits.u1DF);
689	CHECK_BIT_FIELD(rflags.Bits.u1OF);
690	CHECK_BIT_FIELD(rflags.Bits.u2IOPL);
691	CHECK_BIT_FIELD(rflags.Bits.u1NT);
692	CHECK_BIT_FIELD(rflags.Bits.u1Reserved3);
693	CHECK_BIT_FIELD(rflags.Bits.u1RF);
694	CHECK_BIT_FIELD(rflags.Bits.u1VM);
695	CHECK_BIT_FIELD(rflags.Bits.u1AC);
696	CHECK_BIT_FIELD(rflags.Bits.u1VIF);
697	CHECK_BIT_FIELD(rflags.Bits.u1VIP);
698	CHECK_BIT_FIELD(rflags.Bits.u1ID);
699	}
700
701	if (!g_fIgnoreRaxRdx)
702	CHECK_FIELD(rax);
703	CHECK_FIELD(rcx);
704	if (!g_fIgnoreRaxRdx)
705	CHECK_FIELD(rdx);
706	CHECK_FIELD(rbx);
707	CHECK_FIELD(rsp);
708	CHECK_FIELD(rbp);
709	CHECK_FIELD(rsi);
710	CHECK_FIELD(rdi);
711	CHECK_FIELD(r8);
712	CHECK_FIELD(r9);
713	CHECK_FIELD(r10);
714	CHECK_FIELD(r11);
715	CHECK_FIELD(r12);
716	CHECK_FIELD(r13);
717	CHECK_SEL(cs);
718	CHECK_SEL(ss);
719	CHECK_SEL(ds);
720	CHECK_SEL(es);
721	CHECK_SEL(fs);
722	CHECK_SEL(gs);
723	CHECK_FIELD(cr0);
724	CHECK_FIELD(cr2);
725	CHECK_FIELD(cr3);
726	CHECK_FIELD(cr4);
727	CHECK_FIELD(dr[0]);
728	CHECK_FIELD(dr[1]);
729	CHECK_FIELD(dr[2]);
730	CHECK_FIELD(dr[3]);
731	CHECK_FIELD(dr[6]);
732	CHECK_FIELD(dr[7]);
733	CHECK_FIELD(gdtr.cbGdt);
734	CHECK_FIELD(gdtr.pGdt);
735	CHECK_FIELD(idtr.cbIdt);
736	CHECK_FIELD(idtr.pIdt);
737	CHECK_SEL(ldtr);
738	CHECK_SEL(tr);
739	CHECK_FIELD(SysEnter.cs);
740	CHECK_FIELD(SysEnter.eip);
741	CHECK_FIELD(SysEnter.esp);
742	CHECK_FIELD(msrEFER);
743	CHECK_FIELD(msrSTAR);
744	CHECK_FIELD(msrPAT);
745	CHECK_FIELD(msrLSTAR);
746	CHECK_FIELD(msrCSTAR);
747	CHECK_FIELD(msrSFMASK);
748	CHECK_FIELD(msrKERNELGSBASE);
749
750	# undef CHECK_FIELD
751	# undef CHECK_BIT_FIELD
752	}
753	}
754	#endif /* VBOX_COMPARE_IEM_AND_EM */
755
756
757	/**
758	* Interprets the current instruction.
759	*
760	* @returns VBox status code.
761	* @retval VINF_* Scheduling instructions.
762	* @retval VERR_EM_INTERPRETER Something we can't cope with.
763	* @retval VERR_* Fatal errors.
764	*
765	* @param pVCpu The cross context virtual CPU structure.
766	* @param pRegFrame The register frame.
767	* Updates the EIP if an instruction was executed successfully.
768	* @param pvFault The fault address (CR2).
769	*
770	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
771	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
772	* to worry about e.g. invalid modrm combinations (!)
773	*/
774	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstruction(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault)
775	{
776	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
777	LogFlow(("EMInterpretInstruction %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
778	#ifdef VBOX_WITH_IEM
779	NOREF(pvFault);
780
781	# ifdef VBOX_COMPARE_IEM_AND_EM
782	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
783	g_IncomingCtx = *pCtx;
784	g_fIncomingFFs = pVCpu->fLocalForcedActions;
785	g_cbEmWrote = g_cbIemWrote = 0;
786
787	# ifdef VBOX_COMPARE_IEM_FIRST
788	/* IEM */
789	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
790	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
791	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
792	rcIem = VERR_EM_INTERPRETER;
793	g_IemCtx = *pCtx;
794	g_fIemFFs = pVCpu->fLocalForcedActions;
795	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
796	*pCtx = g_IncomingCtx;
797	# endif
798
799	/* EM */
800	RTGCPTR pbCode;
801	VBOXSTRICTRC rcEm = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
802	if (RT_SUCCESS(rcEm))
803	{
804	uint32_t cbOp;
805	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
806	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
807	rcEm = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
808	if (RT_SUCCESS(rcEm))
809	{
810	Assert(cbOp == pDis->cbInstr);
811	uint32_t cbIgnored;
812	rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbIgnored);
813	if (RT_SUCCESS(rcEm))
814	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
815
816	}
817	rcEm = VERR_EM_INTERPRETER;
818	}
819	else
820	rcEm = VERR_EM_INTERPRETER;
821	# ifdef VBOX_SAME_AS_EM
822	if (rcEm == VERR_EM_INTERPRETER)
823	{
824	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
825	return rcEm;
826	}
827	# endif
828	g_EmCtx = *pCtx;
829	g_fEmFFs = pVCpu->fLocalForcedActions;
830	VBOXSTRICTRC rc = rcEm;
831
832	# ifdef VBOX_COMPARE_IEM_LAST
833	/* IEM */
834	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
835	*pCtx = g_IncomingCtx;
836	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
837	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
838	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
839	rcIem = VERR_EM_INTERPRETER;
840	g_IemCtx = *pCtx;
841	g_fIemFFs = pVCpu->fLocalForcedActions;
842	rc = rcIem;
843	# endif
844
845	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
846	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, 0, 0);
847	# endif
848
849	# else
850	VBOXSTRICTRC rc = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
851	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
852	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
853	rc = VERR_EM_INTERPRETER;
854	# endif
855	if (rc != VINF_SUCCESS)
856	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
857
858	return rc;
859	#else
860	RTGCPTR pbCode;
861	VBOXSTRICTRC rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
862	if (RT_SUCCESS(rc))
863	{
864	uint32_t cbOp;
865	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
866	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
867	rc = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
868	if (RT_SUCCESS(rc))
869	{
870	Assert(cbOp == pDis->cbInstr);
871	uint32_t cbIgnored;
872	rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbIgnored);
873	if (RT_SUCCESS(rc))
874	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
875
876	return rc;
877	}
878	}
879	return VERR_EM_INTERPRETER;
880	#endif
881	}
882
883
884	/**
885	* Interprets the current instruction.
886	*
887	* @returns VBox status code.
888	* @retval VINF_* Scheduling instructions.
889	* @retval VERR_EM_INTERPRETER Something we can't cope with.
890	* @retval VERR_* Fatal errors.
891	*
892	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
893	* @param pRegFrame The register frame.
894	* Updates the EIP if an instruction was executed successfully.
895	* @param pvFault The fault address (CR2).
896	* @param pcbWritten Size of the write (if applicable).
897	*
898	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
899	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
900	* to worry about e.g. invalid modrm combinations (!)
901	*/
902	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionEx(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbWritten)
903	{
904	LogFlow(("EMInterpretInstructionEx %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
905	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
906	#ifdef VBOX_WITH_IEM
907	NOREF(pvFault);
908
909	# ifdef VBOX_COMPARE_IEM_AND_EM
910	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
911	g_IncomingCtx = *pCtx;
912	g_fIncomingFFs = pVCpu->fLocalForcedActions;
913	g_cbEmWrote = g_cbIemWrote = 0;
914
915	# ifdef VBOX_COMPARE_IEM_FIRST
916	/* IEM */
917	uint32_t cbIemWritten = 0;
918	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, &cbIemWritten);
919	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
920	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
921	rcIem = VERR_EM_INTERPRETER;
922	g_IemCtx = *pCtx;
923	g_fIemFFs = pVCpu->fLocalForcedActions;
924	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
925	*pCtx = g_IncomingCtx;
926	# endif
927
928	/* EM */
929	uint32_t cbEmWritten = 0;
930	RTGCPTR pbCode;
931	VBOXSTRICTRC rcEm = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
932	if (RT_SUCCESS(rcEm))
933	{
934	uint32_t cbOp;
935	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
936	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
937	rcEm = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
938	if (RT_SUCCESS(rcEm))
939	{
940	Assert(cbOp == pDis->cbInstr);
941	rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbEmWritten);
942	if (RT_SUCCESS(rcEm))
943	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
944
945	}
946	else
947	rcEm = VERR_EM_INTERPRETER;
948	}
949	else
950	rcEm = VERR_EM_INTERPRETER;
951	# ifdef VBOX_SAME_AS_EM
952	if (rcEm == VERR_EM_INTERPRETER)
953	{
954	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
955	return rcEm;
956	}
957	# endif
958	g_EmCtx = *pCtx;
959	g_fEmFFs = pVCpu->fLocalForcedActions;
960	*pcbWritten = cbEmWritten;
961	VBOXSTRICTRC rc = rcEm;
962
963	# ifdef VBOX_COMPARE_IEM_LAST
964	/* IEM */
965	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
966	*pCtx = g_IncomingCtx;
967	uint32_t cbIemWritten = 0;
968	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, &cbIemWritten);
969	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
970	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
971	rcIem = VERR_EM_INTERPRETER;
972	g_IemCtx = *pCtx;
973	g_fIemFFs = pVCpu->fLocalForcedActions;
974	*pcbWritten = cbIemWritten;
975	rc = rcIem;
976	# endif
977
978	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
979	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, cbEmWritten, cbIemWritten);
980	# endif
981
982	# else
983	VBOXSTRICTRC rc = IEMExecOneBypassEx(pVCpu, pRegFrame, pcbWritten);
984	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
985	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
986	rc = VERR_EM_INTERPRETER;
987	# endif
988	if (rc != VINF_SUCCESS)
989	Log(("EMInterpretInstructionEx: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
990
991	return rc;
992	#else
993	RTGCPTR pbCode;
994	VBOXSTRICTRC rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
995	if (RT_SUCCESS(rc))
996	{
997	uint32_t cbOp;
998	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
999	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
1000	rc = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
1001	if (RT_SUCCESS(rc))
1002	{
1003	Assert(cbOp == pDis->cbInstr);
1004	rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, pcbWritten);
1005	if (RT_SUCCESS(rc))
1006	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
1007
1008	return rc;
1009	}
1010	}
1011	return VERR_EM_INTERPRETER;
1012	#endif
1013	}
1014
1015
1016	/**
1017	* Interprets the current instruction using the supplied DISCPUSTATE structure.
1018	*
1019	* IP/EIP/RIP IS updated!
1020	*
1021	* @returns VBox strict status code.
1022	* @retval VINF_* Scheduling instructions. When these are returned, it
1023	* starts to get a bit tricky to know whether code was
1024	* executed or not... We'll address this when it becomes a problem.
1025	* @retval VERR_EM_INTERPRETER Something we can't cope with.
1026	* @retval VERR_* Fatal errors.
1027	*
1028	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1029	* @param pDis The disassembler cpu state for the instruction to be
1030	* interpreted.
1031	* @param pRegFrame The register frame. IP/EIP/RIP IS changed!
1032	* @param pvFault The fault address (CR2).
1033	* @param enmCodeType Code type (user/supervisor)
1034	*
1035	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
1036	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
1037	* to worry about e.g. invalid modrm combinations (!)
1038	*
1039	* @todo At this time we do NOT check if the instruction overwrites vital information.
1040	* Make sure this can't happen!! (will add some assertions/checks later)
1041	*/
1042	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionDisasState(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
1043	RTGCPTR pvFault, EMCODETYPE enmCodeType)
1044	{
1045	LogFlow(("EMInterpretInstructionDisasState %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
1046	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1047	#ifdef VBOX_WITH_IEM
1048	NOREF(pDis); NOREF(pvFault); NOREF(enmCodeType);
1049
1050	# ifdef VBOX_COMPARE_IEM_AND_EM
1051	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1052	g_IncomingCtx = *pCtx;
1053	g_fIncomingFFs = pVCpu->fLocalForcedActions;
1054	g_cbEmWrote = g_cbIemWrote = 0;
1055
1056	# ifdef VBOX_COMPARE_IEM_FIRST
1057	VBOXSTRICTRC rcIem = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
1058	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
1059	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
1060	rcIem = VERR_EM_INTERPRETER;
1061	g_IemCtx = *pCtx;
1062	g_fIemFFs = pVCpu->fLocalForcedActions;
1063	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
1064	*pCtx = g_IncomingCtx;
1065	# endif
1066
1067	/* EM */
1068	uint32_t cbIgnored;
1069	VBOXSTRICTRC rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, enmCodeType, &cbIgnored);
1070	if (RT_SUCCESS(rcEm))
1071	pRegFrame->rip += pDis->cbInstr; /* Move on to the next instruction. */
1072	# ifdef VBOX_SAME_AS_EM
1073	if (rcEm == VERR_EM_INTERPRETER)
1074	{
1075	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
1076	return rcEm;
1077	}
1078	# endif
1079	g_EmCtx = *pCtx;
1080	g_fEmFFs = pVCpu->fLocalForcedActions;
1081	VBOXSTRICTRC rc = rcEm;
1082
1083	# ifdef VBOX_COMPARE_IEM_LAST
1084	/* IEM */
1085	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
1086	*pCtx = g_IncomingCtx;
1087	VBOXSTRICTRC rcIem = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
1088	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
1089	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
1090	rcIem = VERR_EM_INTERPRETER;
1091	g_IemCtx = *pCtx;
1092	g_fIemFFs = pVCpu->fLocalForcedActions;
1093	rc = rcIem;
1094	# endif
1095
1096	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
1097	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, 0, 0);
1098	# endif
1099
1100	# else
1101	VBOXSTRICTRC rc = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
1102	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
1103	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
1104	rc = VERR_EM_INTERPRETER;
1105	# endif
1106
1107	if (rc != VINF_SUCCESS)
1108	Log(("EMInterpretInstructionDisasState: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
1109
1110	return rc;
1111	#else
1112	uint32_t cbIgnored;
1113	VBOXSTRICTRC rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, enmCodeType, &cbIgnored);
1114	if (RT_SUCCESS(rc))
1115	pRegFrame->rip += pDis->cbInstr; /* Move on to the next instruction. */
1116	return rc;
1117	#endif
1118	}
1119
1120	#ifdef IN_RC
1121
1122	DECLINLINE(int) emRCStackRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCPTR GCPtrSrc, uint32_t cb)
1123	{
1124	int rc = MMGCRamRead(pVM, pvDst, (void *)(uintptr_t)GCPtrSrc, cb);
1125	if (RT_LIKELY(rc != VERR_ACCESS_DENIED))
1126	return rc;
1127	return PGMPhysInterpretedReadNoHandlers(pVCpu, pCtxCore, pvDst, GCPtrSrc, cb, /fMayTrap/ false);
1128	}
1129
1130
1131	/**
1132	* Interpret IRET (currently only to V86 code) - PATM only.
1133	*
1134	* @returns VBox status code.
1135	* @param pVM The cross context VM structure.
1136	* @param pVCpu The cross context virtual CPU structure.
1137	* @param pRegFrame The register frame.
1138	*
1139	*/
1140	VMM_INT_DECL(int) EMInterpretIretV86ForPatm(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1141	{
1142	RTGCUINTPTR pIretStack = (RTGCUINTPTR)pRegFrame->esp;
1143	RTGCUINTPTR eip, cs, esp, ss, eflags, ds, es, fs, gs, uMask;
1144	int rc;
1145
1146	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1147	Assert(!CPUMIsGuestIn64BitCode(pVCpu));
1148	/** @todo Rainy day: Test what happens when VERR_EM_INTERPRETER is returned by
1149	* this function. Fear that it may guru on us, thus not converted to
1150	* IEM. */
1151
1152	rc = emRCStackRead(pVM, pVCpu, pRegFrame, &eip, (RTGCPTR)pIretStack , 4);
1153	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &cs, (RTGCPTR)(pIretStack + 4), 4);
1154	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &eflags, (RTGCPTR)(pIretStack + 8), 4);
1155	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1156	AssertReturn(eflags & X86_EFL_VM, VERR_EM_INTERPRETER);
1157
1158	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &esp, (RTGCPTR)(pIretStack + 12), 4);
1159	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ss, (RTGCPTR)(pIretStack + 16), 4);
1160	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &es, (RTGCPTR)(pIretStack + 20), 4);
1161	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ds, (RTGCPTR)(pIretStack + 24), 4);
1162	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &fs, (RTGCPTR)(pIretStack + 28), 4);
1163	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &gs, (RTGCPTR)(pIretStack + 32), 4);
1164	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1165
1166	pRegFrame->eip = eip & 0xffff;
1167	pRegFrame->cs.Sel = cs;
1168
1169	/* Mask away all reserved bits */
1170	uMask = X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_TF \| X86_EFL_IF \| X86_EFL_DF \| X86_EFL_OF \| X86_EFL_IOPL \| X86_EFL_NT \| X86_EFL_RF \| X86_EFL_VM \| X86_EFL_AC \| X86_EFL_VIF \| X86_EFL_VIP \| X86_EFL_ID;
1171	eflags &= uMask;
1172
1173	CPUMRawSetEFlags(pVCpu, eflags);
1174	Assert((pRegFrame->eflags.u32 & (X86_EFL_IF\|X86_EFL_IOPL)) == X86_EFL_IF);
1175
1176	pRegFrame->esp = esp;
1177	pRegFrame->ss.Sel = ss;
1178	pRegFrame->ds.Sel = ds;
1179	pRegFrame->es.Sel = es;
1180	pRegFrame->fs.Sel = fs;
1181	pRegFrame->gs.Sel = gs;
1182
1183	return VINF_SUCCESS;
1184	}
1185
1186	# ifndef VBOX_WITH_IEM
1187	/**
1188	* IRET Emulation.
1189	*/
1190	static int emInterpretIret(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1191	{
1192	#ifdef VBOX_WITH_RAW_RING1
1193	NOREF(pvFault); NOREF(pcbSize); NOREF(pDis);
1194	if (EMIsRawRing1Enabled(pVM))
1195	{
1196	RTGCUINTPTR pIretStack = (RTGCUINTPTR)pRegFrame->esp;
1197	RTGCUINTPTR eip, cs, esp, ss, eflags, uMask;
1198	int rc;
1199	uint32_t cpl, rpl;
1200
1201	/* We only execute 32-bits protected mode code in raw mode, so no need to bother to check for 16-bits code here. */
1202	/** @todo we don't verify all the edge cases that generate #GP faults */
1203
1204	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1205	Assert(!CPUMIsGuestIn64BitCode(pVCpu));
1206	/** @todo Rainy day: Test what happens when VERR_EM_INTERPRETER is returned by
1207	* this function. Fear that it may guru on us, thus not converted to
1208	* IEM. */
1209
1210	rc = emRCStackRead(pVM, pVCpu, pRegFrame, &eip, (RTGCPTR)pIretStack , 4);
1211	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &cs, (RTGCPTR)(pIretStack + 4), 4);
1212	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &eflags, (RTGCPTR)(pIretStack + 8), 4);
1213	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1214	AssertReturn(eflags & X86_EFL_VM, VERR_EM_INTERPRETER);
1215
1216	/* Deal with V86 above. */
1217	if (eflags & X86_EFL_VM)
1218	return EMInterpretIretV86ForPatm(pVM, pVCpu, pRegFrame);
1219
1220	cpl = CPUMRCGetGuestCPL(pVCpu, pRegFrame);
1221	rpl = cs & X86_SEL_RPL;
1222
1223	Log(("emInterpretIret: iret to CS:EIP=%04X:%08X eflags=%x\n", cs, eip, eflags));
1224	if (rpl != cpl)
1225	{
1226	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &esp, (RTGCPTR)(pIretStack + 12), 4);
1227	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ss, (RTGCPTR)(pIretStack + 16), 4);
1228	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1229	Log(("emInterpretIret: return to different privilege level (rpl=%d cpl=%d)\n", rpl, cpl));
1230	Log(("emInterpretIret: SS:ESP=%04x:%08x\n", ss, esp));
1231	pRegFrame->ss.Sel = ss;
1232	pRegFrame->esp = esp;
1233	}
1234	pRegFrame->cs.Sel = cs;
1235	pRegFrame->eip = eip;
1236
1237	/* Adjust CS & SS as required. */
1238	CPUMRCRecheckRawState(pVCpu, pRegFrame);
1239
1240	/* Mask away all reserved bits */
1241	uMask = X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_TF \| X86_EFL_IF \| X86_EFL_DF \| X86_EFL_OF \| X86_EFL_IOPL \| X86_EFL_NT \| X86_EFL_RF \| X86_EFL_VM \| X86_EFL_AC \| X86_EFL_VIF \| X86_EFL_VIP \| X86_EFL_ID;
1242	eflags &= uMask;
1243
1244	CPUMRawSetEFlags(pVCpu, eflags);
1245	Assert((pRegFrame->eflags.u32 & (X86_EFL_IF\|X86_EFL_IOPL)) == X86_EFL_IF);
1246	return VINF_SUCCESS;
1247	}
1248	#else
1249	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
1250	#endif
1251	return VERR_EM_INTERPRETER;
1252	}
1253	# endif /* !VBOX_WITH_IEM */
1254
1255	#endif /* IN_RC */
1256
1257
1258
1259	/*
1260	*
1261	* Old interpreter primitives used by HM, move/eliminate later.
1262	* Old interpreter primitives used by HM, move/eliminate later.
1263	* Old interpreter primitives used by HM, move/eliminate later.
1264	* Old interpreter primitives used by HM, move/eliminate later.
1265	* Old interpreter primitives used by HM, move/eliminate later.
1266	*
1267	*/
1268
1269
1270	/**
1271	* Interpret CPUID given the parameters in the CPU context.
1272	*
1273	* @returns VBox status code.
1274	* @param pVM The cross context VM structure.
1275	* @param pVCpu The cross context virtual CPU structure.
1276	* @param pRegFrame The register frame.
1277	*
1278	*/
1279	VMM_INT_DECL(int) EMInterpretCpuId(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1280	{
1281	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1282	uint32_t iLeaf = pRegFrame->eax;
1283	uint32_t iSubLeaf = pRegFrame->ecx;
1284	NOREF(pVM);
1285
1286	/* cpuid clears the high dwords of the affected 64 bits registers. */
1287	pRegFrame->rax = 0;
1288	pRegFrame->rbx = 0;
1289	pRegFrame->rcx = 0;
1290	pRegFrame->rdx = 0;
1291
1292	/* Note: operates the same in 64 and non-64 bits mode. */
1293	CPUMGetGuestCpuId(pVCpu, iLeaf, iSubLeaf, &pRegFrame->eax, &pRegFrame->ebx, &pRegFrame->ecx, &pRegFrame->edx);
1294	Log(("Emulate: CPUID %x -> %08x %08x %08x %08x\n", iLeaf, pRegFrame->eax, pRegFrame->ebx, pRegFrame->ecx, pRegFrame->edx));
1295	return VINF_SUCCESS;
1296	}
1297
1298
1299	/**
1300	* Interpret RDTSC.
1301	*
1302	* @returns VBox status code.
1303	* @param pVM The cross context VM structure.
1304	* @param pVCpu The cross context virtual CPU structure.
1305	* @param pRegFrame The register frame.
1306	*
1307	*/
1308	VMM_INT_DECL(int) EMInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1309	{
1310	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1311	unsigned uCR4 = CPUMGetGuestCR4(pVCpu);
1312
1313	if (uCR4 & X86_CR4_TSD)
1314	return VERR_EM_INTERPRETER; /* genuine #GP */
1315
1316	uint64_t uTicks = TMCpuTickGet(pVCpu);
1317
1318	/* Same behaviour in 32 & 64 bits mode */
1319	pRegFrame->rax = RT_LO_U32(uTicks);
1320	pRegFrame->rdx = RT_HI_U32(uTicks);
1321	#ifdef VBOX_COMPARE_IEM_AND_EM
1322	g_fIgnoreRaxRdx = true;
1323	#endif
1324
1325	NOREF(pVM);
1326	return VINF_SUCCESS;
1327	}
1328
1329	/**
1330	* Interpret RDTSCP.
1331	*
1332	* @returns VBox status code.
1333	* @param pVM The cross context VM structure.
1334	* @param pVCpu The cross context virtual CPU structure.
1335	* @param pCtx The CPU context.
1336	*
1337	*/
1338	VMM_INT_DECL(int) EMInterpretRdtscp(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
1339	{
1340	Assert(pCtx == CPUMQueryGuestCtxPtr(pVCpu));
1341	uint32_t uCR4 = CPUMGetGuestCR4(pVCpu);
1342
1343	if (!pVM->cpum.ro.GuestFeatures.fRdTscP)
1344	{
1345	AssertFailed();
1346	return VERR_EM_INTERPRETER; /* genuine #UD */
1347	}
1348
1349	if (uCR4 & X86_CR4_TSD)
1350	return VERR_EM_INTERPRETER; /* genuine #GP */
1351
1352	uint64_t uTicks = TMCpuTickGet(pVCpu);
1353
1354	/* Same behaviour in 32 & 64 bits mode */
1355	pCtx->rax = RT_LO_U32(uTicks);
1356	pCtx->rdx = RT_HI_U32(uTicks);
1357	#ifdef VBOX_COMPARE_IEM_AND_EM
1358	g_fIgnoreRaxRdx = true;
1359	#endif
1360	/* Low dword of the TSC_AUX msr only. */
1361	VBOXSTRICTRC rc2 = CPUMQueryGuestMsr(pVCpu, MSR_K8_TSC_AUX, &pCtx->rcx); Assert(rc2 == VINF_SUCCESS); NOREF(rc2);
1362	pCtx->rcx &= UINT32_C(0xffffffff);
1363
1364	return VINF_SUCCESS;
1365	}
1366
1367	/**
1368	* Interpret RDPMC.
1369	*
1370	* @returns VBox status code.
1371	* @param pVM The cross context VM structure.
1372	* @param pVCpu The cross context virtual CPU structure.
1373	* @param pRegFrame The register frame.
1374	*
1375	*/
1376	VMM_INT_DECL(int) EMInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1377	{
1378	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1379	uint32_t uCR4 = CPUMGetGuestCR4(pVCpu);
1380
1381	/* If X86_CR4_PCE is not set, then CPL must be zero. */
1382	if ( !(uCR4 & X86_CR4_PCE)
1383	&& CPUMGetGuestCPL(pVCpu) != 0)
1384	{
1385	Assert(CPUMGetGuestCR0(pVCpu) & X86_CR0_PE);
1386	return VERR_EM_INTERPRETER; /* genuine #GP */
1387	}
1388
1389	/* Just return zero here; rather tricky to properly emulate this, especially as the specs are a mess. */
1390	pRegFrame->rax = 0;
1391	pRegFrame->rdx = 0;
1392	/** @todo We should trigger a \#GP here if the CPU doesn't support the index in
1393	* ecx but see @bugref{3472}! */
1394
1395	NOREF(pVM);
1396	return VINF_SUCCESS;
1397	}
1398
1399
1400	/**
1401	* MWAIT Emulation.
1402	*/
1403	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretMWait(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1404	{
1405	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1406	uint32_t u32Dummy, u32ExtFeatures, cpl, u32MWaitFeatures;
1407	NOREF(pVM);
1408
1409	/* Get the current privilege level. */
1410	cpl = CPUMGetGuestCPL(pVCpu);
1411	if (cpl != 0)
1412	return VERR_EM_INTERPRETER; /* supervisor only */
1413
1414	CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &u32ExtFeatures, &u32Dummy);
1415	if (!(u32ExtFeatures & X86_CPUID_FEATURE_ECX_MONITOR))
1416	return VERR_EM_INTERPRETER; /* not supported */
1417
1418	/*
1419	* CPUID.05H.ECX[0] defines support for power management extensions (eax)
1420	* CPUID.05H.ECX[1] defines support for interrupts as break events for mwait even when IF=0
1421	*/
1422	CPUMGetGuestCpuId(pVCpu, 5, 0, &u32Dummy, &u32Dummy, &u32MWaitFeatures, &u32Dummy);
1423	if (pRegFrame->ecx > 1)
1424	{
1425	Log(("EMInterpretMWait: unexpected ecx value %x -> recompiler\n", pRegFrame->ecx));
1426	return VERR_EM_INTERPRETER; /* illegal value. */
1427	}
1428
1429	if (pRegFrame->ecx && !(u32MWaitFeatures & X86_CPUID_MWAIT_ECX_BREAKIRQIF0))
1430	{
1431	Log(("EMInterpretMWait: unsupported X86_CPUID_MWAIT_ECX_BREAKIRQIF0 -> recompiler\n"));
1432	return VERR_EM_INTERPRETER; /* illegal value. */
1433	}
1434
1435	return EMMonitorWaitPerform(pVCpu, pRegFrame->rax, pRegFrame->rcx);
1436	}
1437
1438
1439	/**
1440	* MONITOR Emulation.
1441	*/
1442	VMM_INT_DECL(int) EMInterpretMonitor(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1443	{
1444	uint32_t u32Dummy, u32ExtFeatures, cpl;
1445	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1446	NOREF(pVM);
1447
1448	if (pRegFrame->ecx != 0)
1449	{
1450	Log(("emInterpretMonitor: unexpected ecx=%x -> recompiler!!\n", pRegFrame->ecx));
1451	return VERR_EM_INTERPRETER; /* illegal value. */
1452	}
1453
1454	/* Get the current privilege level. */
1455	cpl = CPUMGetGuestCPL(pVCpu);
1456	if (cpl != 0)
1457	return VERR_EM_INTERPRETER; /* supervisor only */
1458
1459	CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &u32ExtFeatures, &u32Dummy);
1460	if (!(u32ExtFeatures & X86_CPUID_FEATURE_ECX_MONITOR))
1461	return VERR_EM_INTERPRETER; /* not supported */
1462
1463	EMMonitorWaitPrepare(pVCpu, pRegFrame->rax, pRegFrame->rcx, pRegFrame->rdx, NIL_RTGCPHYS);
1464	return VINF_SUCCESS;
1465	}
1466
1467
1468	/* VT-x only: */
1469
1470	/**
1471	* Interpret INVLPG.
1472	*
1473	* @returns VBox status code.
1474	* @param pVM The cross context VM structure.
1475	* @param pVCpu The cross context virtual CPU structure.
1476	* @param pRegFrame The register frame.
1477	* @param pAddrGC Operand address.
1478	*
1479	*/
1480	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pAddrGC)
1481	{
1482	/** @todo is addr always a flat linear address or ds based
1483	* (in absence of segment override prefixes)????
1484	*/
1485	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1486	NOREF(pVM); NOREF(pRegFrame);
1487	#ifdef IN_RC
1488	LogFlow(("RC: EMULATE: invlpg %RGv\n", pAddrGC));
1489	#endif
1490	VBOXSTRICTRC rc = PGMInvalidatePage(pVCpu, pAddrGC);
1491	if ( rc == VINF_SUCCESS
1492	\|\| rc == VINF_PGM_SYNC_CR3 /* we can rely on the FF */)
1493	return VINF_SUCCESS;
1494	AssertMsgReturn(rc == VINF_EM_RAW_EMULATE_INSTR,
1495	("%Rrc addr=%RGv\n", VBOXSTRICTRC_VAL(rc), pAddrGC),
1496	VERR_EM_INTERPRETER);
1497	return rc;
1498	}
1499
1500
1501	#ifdef LOG_ENABLED
1502	static const char *emMSRtoString(uint32_t uMsr)
1503	{
1504	switch (uMsr)
1505	{
1506	case MSR_IA32_APICBASE: return "MSR_IA32_APICBASE";
1507	case MSR_IA32_CR_PAT: return "MSR_IA32_CR_PAT";
1508	case MSR_IA32_SYSENTER_CS: return "MSR_IA32_SYSENTER_CS";
1509	case MSR_IA32_SYSENTER_EIP: return "MSR_IA32_SYSENTER_EIP";
1510	case MSR_IA32_SYSENTER_ESP: return "MSR_IA32_SYSENTER_ESP";
1511	case MSR_K6_EFER: return "MSR_K6_EFER";
1512	case MSR_K8_SF_MASK: return "MSR_K8_SF_MASK";
1513	case MSR_K6_STAR: return "MSR_K6_STAR";
1514	case MSR_K8_LSTAR: return "MSR_K8_LSTAR";
1515	case MSR_K8_CSTAR: return "MSR_K8_CSTAR";
1516	case MSR_K8_FS_BASE: return "MSR_K8_FS_BASE";
1517	case MSR_K8_GS_BASE: return "MSR_K8_GS_BASE";
1518	case MSR_K8_KERNEL_GS_BASE: return "MSR_K8_KERNEL_GS_BASE";
1519	case MSR_K8_TSC_AUX: return "MSR_K8_TSC_AUX";
1520	case MSR_IA32_BIOS_SIGN_ID: return "Unsupported MSR_IA32_BIOS_SIGN_ID";
1521	case MSR_IA32_PLATFORM_ID: return "Unsupported MSR_IA32_PLATFORM_ID";
1522	case MSR_IA32_BIOS_UPDT_TRIG: return "Unsupported MSR_IA32_BIOS_UPDT_TRIG";
1523	case MSR_IA32_TSC: return "MSR_IA32_TSC";
1524	case MSR_IA32_MISC_ENABLE: return "MSR_IA32_MISC_ENABLE";
1525	case MSR_IA32_MTRR_CAP: return "MSR_IA32_MTRR_CAP";
1526	case MSR_IA32_MCG_CAP: return "Unsupported MSR_IA32_MCG_CAP";
1527	case MSR_IA32_MCG_STATUS: return "Unsupported MSR_IA32_MCG_STATUS";
1528	case MSR_IA32_MCG_CTRL: return "Unsupported MSR_IA32_MCG_CTRL";
1529	case MSR_IA32_MTRR_DEF_TYPE: return "MSR_IA32_MTRR_DEF_TYPE";
1530	case MSR_K7_EVNTSEL0: return "Unsupported MSR_K7_EVNTSEL0";
1531	case MSR_K7_EVNTSEL1: return "Unsupported MSR_K7_EVNTSEL1";
1532	case MSR_K7_EVNTSEL2: return "Unsupported MSR_K7_EVNTSEL2";
1533	case MSR_K7_EVNTSEL3: return "Unsupported MSR_K7_EVNTSEL3";
1534	case MSR_IA32_MC0_CTL: return "Unsupported MSR_IA32_MC0_CTL";
1535	case MSR_IA32_MC0_STATUS: return "Unsupported MSR_IA32_MC0_STATUS";
1536	case MSR_IA32_PERFEVTSEL0: return "Unsupported MSR_IA32_PERFEVTSEL0";
1537	case MSR_IA32_PERFEVTSEL1: return "Unsupported MSR_IA32_PERFEVTSEL1";
1538	case MSR_IA32_PERF_STATUS: return "MSR_IA32_PERF_STATUS";
1539	case MSR_IA32_PLATFORM_INFO: return "MSR_IA32_PLATFORM_INFO";
1540	case MSR_IA32_PERF_CTL: return "Unsupported MSR_IA32_PERF_CTL";
1541	case MSR_K7_PERFCTR0: return "Unsupported MSR_K7_PERFCTR0";
1542	case MSR_K7_PERFCTR1: return "Unsupported MSR_K7_PERFCTR1";
1543	case MSR_K7_PERFCTR2: return "Unsupported MSR_K7_PERFCTR2";
1544	case MSR_K7_PERFCTR3: return "Unsupported MSR_K7_PERFCTR3";
1545	case MSR_IA32_PMC0: return "Unsupported MSR_IA32_PMC0";
1546	case MSR_IA32_PMC1: return "Unsupported MSR_IA32_PMC1";
1547	case MSR_IA32_PMC2: return "Unsupported MSR_IA32_PMC2";
1548	case MSR_IA32_PMC3: return "Unsupported MSR_IA32_PMC3";
1549	}
1550	return "Unknown MSR";
1551	}
1552	#endif /* LOG_ENABLED */
1553
1554
1555	/**
1556	* Interpret RDMSR
1557	*
1558	* @returns VBox status code.
1559	* @param pVM The cross context VM structure.
1560	* @param pVCpu The cross context virtual CPU structure.
1561	* @param pRegFrame The register frame.
1562	*/
1563	VMM_INT_DECL(int) EMInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1564	{
1565	NOREF(pVM);
1566
1567	/* Get the current privilege level. */
1568	if (CPUMGetGuestCPL(pVCpu) != 0)
1569	{
1570	Log4(("EM: Refuse RDMSR: CPL != 0\n"));
1571	return VERR_EM_INTERPRETER; /* supervisor only */
1572	}
1573
1574	uint64_t uValue;
1575	VBOXSTRICTRC rcStrict = CPUMQueryGuestMsr(pVCpu, pRegFrame->ecx, &uValue);
1576	if (RT_UNLIKELY(rcStrict != VINF_SUCCESS))
1577	{
1578	Log4(("EM: Refuse RDMSR: rc=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
1579	Assert(rcStrict == VERR_CPUM_RAISE_GP_0 \|\| rcStrict == VERR_EM_INTERPRETER \|\| rcStrict == VINF_CPUM_R3_MSR_READ);
1580	return VERR_EM_INTERPRETER;
1581	}
1582	pRegFrame->rax = RT_LO_U32(uValue);
1583	pRegFrame->rdx = RT_HI_U32(uValue);
1584	LogFlow(("EMInterpretRdmsr %s (%x) -> %RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx, uValue));
1585	return VINF_SUCCESS;
1586	}
1587
1588
1589	/**
1590	* Interpret WRMSR
1591	*
1592	* @returns VBox status code.
1593	* @param pVM The cross context VM structure.
1594	* @param pVCpu The cross context virtual CPU structure.
1595	* @param pRegFrame The register frame.
1596	*/
1597	VMM_INT_DECL(int) EMInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1598	{
1599	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1600
1601	/* Check the current privilege level, this instruction is supervisor only. */
1602	if (CPUMGetGuestCPL(pVCpu) != 0)
1603	{
1604	Log4(("EM: Refuse WRMSR: CPL != 0\n"));
1605	return VERR_EM_INTERPRETER; /** @todo raise \#GP(0) */
1606	}
1607
1608	VBOXSTRICTRC rcStrict = CPUMSetGuestMsr(pVCpu, pRegFrame->ecx, RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx));
1609	if (rcStrict != VINF_SUCCESS)
1610	{
1611	Log4(("EM: Refuse WRMSR: CPUMSetGuestMsr returned %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
1612	Assert(rcStrict == VERR_CPUM_RAISE_GP_0 \|\| rcStrict == VERR_EM_INTERPRETER \|\| rcStrict == VINF_CPUM_R3_MSR_WRITE);
1613	return VERR_EM_INTERPRETER;
1614	}
1615	LogFlow(("EMInterpretWrmsr %s (%x) val=%RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx,
1616	RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx)));
1617	NOREF(pVM);
1618	return VINF_SUCCESS;
1619	}
1620
1621
1622	/**
1623	* Interpret DRx write.
1624	*
1625	* @returns VBox status code.
1626	* @param pVM The cross context VM structure.
1627	* @param pVCpu The cross context virtual CPU structure.
1628	* @param pRegFrame The register frame.
1629	* @param DestRegDrx DRx register index (USE_REG_DR*)
1630	* @param SrcRegGen General purpose register index (USE_REG_E**))
1631	*
1632	*/
1633	VMM_INT_DECL(int) EMInterpretDRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegDrx, uint32_t SrcRegGen)
1634	{
1635	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1636	uint64_t uNewDrX;
1637	int rc;
1638	NOREF(pVM);
1639
1640	if (CPUMIsGuestIn64BitCode(pVCpu))
1641	rc = DISFetchReg64(pRegFrame, SrcRegGen, &uNewDrX);
1642	else
1643	{
1644	uint32_t val32;
1645	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
1646	uNewDrX = val32;
1647	}
1648
1649	if (RT_SUCCESS(rc))
1650	{
1651	if (DestRegDrx == 6)
1652	{
1653	uNewDrX \|= X86_DR6_RA1_MASK;
1654	uNewDrX &= ~X86_DR6_RAZ_MASK;
1655	}
1656	else if (DestRegDrx == 7)
1657	{
1658	uNewDrX \|= X86_DR7_RA1_MASK;
1659	uNewDrX &= ~X86_DR7_RAZ_MASK;
1660	}
1661
1662	/** @todo we don't fail if illegal bits are set/cleared for e.g. dr7 */
1663	rc = CPUMSetGuestDRx(pVCpu, DestRegDrx, uNewDrX);
1664	if (RT_SUCCESS(rc))
1665	return rc;
1666	AssertMsgFailed(("CPUMSetGuestDRx %d failed\n", DestRegDrx));
1667	}
1668	return VERR_EM_INTERPRETER;
1669	}
1670
1671
1672	/**
1673	* Interpret DRx read.
1674	*
1675	* @returns VBox status code.
1676	* @param pVM The cross context VM structure.
1677	* @param pVCpu The cross context virtual CPU structure.
1678	* @param pRegFrame The register frame.
1679	* @param DestRegGen General purpose register index (USE_REG_E**))
1680	* @param SrcRegDrx DRx register index (USE_REG_DR*)
1681	*/
1682	VMM_INT_DECL(int) EMInterpretDRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegDrx)
1683	{
1684	uint64_t val64;
1685	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1686	NOREF(pVM);
1687
1688	int rc = CPUMGetGuestDRx(pVCpu, SrcRegDrx, &val64);
1689	AssertMsgRCReturn(rc, ("CPUMGetGuestDRx %d failed\n", SrcRegDrx), VERR_EM_INTERPRETER);
1690	if (CPUMIsGuestIn64BitCode(pVCpu))
1691	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
1692	else
1693	rc = DISWriteReg32(pRegFrame, DestRegGen, (uint32_t)val64);
1694
1695	if (RT_SUCCESS(rc))
1696	return VINF_SUCCESS;
1697
1698	return VERR_EM_INTERPRETER;
1699	}
1700
1701
1702	#if !defined(VBOX_WITH_IEM) \|\| defined(VBOX_COMPARE_IEM_AND_EM)
1703
1704
1705
1706
1707
1708
1709	/*
1710	*
1711	* The old interpreter.
1712	* The old interpreter.
1713	* The old interpreter.
1714	* The old interpreter.
1715	* The old interpreter.
1716	*
1717	*/
1718
1719	DECLINLINE(int) emRamRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCPTR GCPtrSrc, uint32_t cb)
1720	{
1721	#ifdef IN_RC
1722	int rc = MMGCRamRead(pVM, pvDst, (void *)(uintptr_t)GCPtrSrc, cb);
1723	if (RT_LIKELY(rc != VERR_ACCESS_DENIED))
1724	return rc;
1725	/*
1726	* The page pool cache may end up here in some cases because it
1727	* flushed one of the shadow mappings used by the trapping
1728	* instruction and it either flushed the TLB or the CPU reused it.
1729	*/
1730	#else
1731	NOREF(pVM);
1732	#endif
1733	return PGMPhysInterpretedReadNoHandlers(pVCpu, pCtxCore, pvDst, GCPtrSrc, cb, /fMayTrap/ false);
1734	}
1735
1736
1737	DECLINLINE(int) emRamWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, RTGCPTR GCPtrDst, const void *pvSrc, uint32_t cb)
1738	{
1739	/* Don't use MMGCRamWrite here as it does not respect zero pages, shared
1740	pages or write monitored pages. */
1741	NOREF(pVM);
1742	#if !defined(VBOX_COMPARE_IEM_AND_EM) \|\| !defined(VBOX_COMPARE_IEM_LAST)
1743	int rc = PGMPhysInterpretedWriteNoHandlers(pVCpu, pCtxCore, GCPtrDst, pvSrc, cb, /fMayTrap/ false);
1744	#else
1745	int rc = VINF_SUCCESS;
1746	#endif
1747	#ifdef VBOX_COMPARE_IEM_AND_EM
1748	Log(("EM Wrote: %RGv %.*Rhxs rc=%Rrc\n", GCPtrDst, RT_MAX(RT_MIN(cb, 64), 1), pvSrc, rc));
1749	g_cbEmWrote = cb;
1750	memcpy(g_abEmWrote, pvSrc, RT_MIN(cb, sizeof(g_abEmWrote)));
1751	#endif
1752	return rc;
1753	}
1754
1755
1756	/** Convert sel:addr to a flat GC address. */
1757	DECLINLINE(RTGCPTR) emConvertToFlatAddr(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pDis, PDISOPPARAM pParam, RTGCPTR pvAddr)
1758	{
1759	DISSELREG enmPrefixSeg = DISDetectSegReg(pDis, pParam);
1760	return SELMToFlat(pVM, enmPrefixSeg, pRegFrame, pvAddr);
1761	}
1762
1763
1764	#if defined(VBOX_STRICT) \|\| defined(LOG_ENABLED)
1765	/**
1766	* Get the mnemonic for the disassembled instruction.
1767	*
1768	* GC/R0 doesn't include the strings in the DIS tables because
1769	* of limited space.
1770	*/
1771	static const char *emGetMnemonic(PDISCPUSTATE pDis)
1772	{
1773	switch (pDis->pCurInstr->uOpcode)
1774	{
1775	case OP_XCHG: return "Xchg";
1776	case OP_DEC: return "Dec";
1777	case OP_INC: return "Inc";
1778	case OP_POP: return "Pop";
1779	case OP_OR: return "Or";
1780	case OP_AND: return "And";
1781	case OP_MOV: return "Mov";
1782	case OP_INVLPG: return "InvlPg";
1783	case OP_CPUID: return "CpuId";
1784	case OP_MOV_CR: return "MovCRx";
1785	case OP_MOV_DR: return "MovDRx";
1786	case OP_LLDT: return "LLdt";
1787	case OP_LGDT: return "LGdt";
1788	case OP_LIDT: return "LIdt";
1789	case OP_CLTS: return "Clts";
1790	case OP_MONITOR: return "Monitor";
1791	case OP_MWAIT: return "MWait";
1792	case OP_RDMSR: return "Rdmsr";
1793	case OP_WRMSR: return "Wrmsr";
1794	case OP_ADD: return "Add";
1795	case OP_ADC: return "Adc";
1796	case OP_SUB: return "Sub";
1797	case OP_SBB: return "Sbb";
1798	case OP_RDTSC: return "Rdtsc";
1799	case OP_STI: return "Sti";
1800	case OP_CLI: return "Cli";
1801	case OP_XADD: return "XAdd";
1802	case OP_HLT: return "Hlt";
1803	case OP_IRET: return "Iret";
1804	case OP_MOVNTPS: return "MovNTPS";
1805	case OP_STOSWD: return "StosWD";
1806	case OP_WBINVD: return "WbInvd";
1807	case OP_XOR: return "Xor";
1808	case OP_BTR: return "Btr";
1809	case OP_BTS: return "Bts";
1810	case OP_BTC: return "Btc";
1811	case OP_LMSW: return "Lmsw";
1812	case OP_SMSW: return "Smsw";
1813	case OP_CMPXCHG: return pDis->fPrefix & DISPREFIX_LOCK ? "Lock CmpXchg" : "CmpXchg";
1814	case OP_CMPXCHG8B: return pDis->fPrefix & DISPREFIX_LOCK ? "Lock CmpXchg8b" : "CmpXchg8b";
1815
1816	default:
1817	Log(("Unknown opcode %d\n", pDis->pCurInstr->uOpcode));
1818	return "???";
1819	}
1820	}
1821	#endif /* VBOX_STRICT \|\| LOG_ENABLED */
1822
1823
1824	/**
1825	* XCHG instruction emulation.
1826	*/
1827	static int emInterpretXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1828	{
1829	DISQPVPARAMVAL param1, param2;
1830	NOREF(pvFault);
1831
1832	/* Source to make DISQueryParamVal read the register value - ugly hack */
1833	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
1834	if(RT_FAILURE(rc))
1835	return VERR_EM_INTERPRETER;
1836
1837	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
1838	if(RT_FAILURE(rc))
1839	return VERR_EM_INTERPRETER;
1840
1841	#ifdef IN_RC
1842	if (TRPMHasTrap(pVCpu))
1843	{
1844	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1845	{
1846	#endif
1847	RTGCPTR pParam1 = 0, pParam2 = 0;
1848	uint64_t valpar1, valpar2;
1849
1850	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
1851	switch(param1.type)
1852	{
1853	case DISQPV_TYPE_IMMEDIATE: /* register type is translated to this one too */
1854	valpar1 = param1.val.val64;
1855	break;
1856
1857	case DISQPV_TYPE_ADDRESS:
1858	pParam1 = (RTGCPTR)param1.val.val64;
1859	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
1860	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
1861	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
1862	if (RT_FAILURE(rc))
1863	{
1864	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1865	return VERR_EM_INTERPRETER;
1866	}
1867	break;
1868
1869	default:
1870	AssertFailed();
1871	return VERR_EM_INTERPRETER;
1872	}
1873
1874	switch(param2.type)
1875	{
1876	case DISQPV_TYPE_ADDRESS:
1877	pParam2 = (RTGCPTR)param2.val.val64;
1878	pParam2 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param2, pParam2);
1879	EM_ASSERT_FAULT_RETURN(pParam2 == pvFault, VERR_EM_INTERPRETER);
1880	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar2, pParam2, param2.size);
1881	if (RT_FAILURE(rc))
1882	{
1883	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1884	}
1885	break;
1886
1887	case DISQPV_TYPE_IMMEDIATE:
1888	valpar2 = param2.val.val64;
1889	break;
1890
1891	default:
1892	AssertFailed();
1893	return VERR_EM_INTERPRETER;
1894	}
1895
1896	/* Write value of parameter 2 to parameter 1 (reg or memory address) */
1897	if (pParam1 == 0)
1898	{
1899	Assert(param1.type == DISQPV_TYPE_IMMEDIATE); /* register actually */
1900	switch(param1.size)
1901	{
1902	case 1: //special case for AH etc
1903	rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t )valpar2); break;
1904	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)valpar2); break;
1905	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)valpar2); break;
1906	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param1.Base.idxGenReg, valpar2); break;
1907	default: AssertFailedReturn(VERR_EM_INTERPRETER);
1908	}
1909	if (RT_FAILURE(rc))
1910	return VERR_EM_INTERPRETER;
1911	}
1912	else
1913	{
1914	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar2, param1.size);
1915	if (RT_FAILURE(rc))
1916	{
1917	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1918	return VERR_EM_INTERPRETER;
1919	}
1920	}
1921
1922	/* Write value of parameter 1 to parameter 2 (reg or memory address) */
1923	if (pParam2 == 0)
1924	{
1925	Assert(param2.type == DISQPV_TYPE_IMMEDIATE); /* register actually */
1926	switch(param2.size)
1927	{
1928	case 1: //special case for AH etc
1929	rc = DISWriteReg8(pRegFrame, pDis->Param2.Base.idxGenReg, (uint8_t )valpar1); break;
1930	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param2.Base.idxGenReg, (uint16_t)valpar1); break;
1931	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param2.Base.idxGenReg, (uint32_t)valpar1); break;
1932	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param2.Base.idxGenReg, valpar1); break;
1933	default: AssertFailedReturn(VERR_EM_INTERPRETER);
1934	}
1935	if (RT_FAILURE(rc))
1936	return VERR_EM_INTERPRETER;
1937	}
1938	else
1939	{
1940	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam2, &valpar1, param2.size);
1941	if (RT_FAILURE(rc))
1942	{
1943	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1944	return VERR_EM_INTERPRETER;
1945	}
1946	}
1947
1948	*pcbSize = param2.size;
1949	return VINF_SUCCESS;
1950	#ifdef IN_RC
1951	}
1952	}
1953	return VERR_EM_INTERPRETER;
1954	#endif
1955	}
1956
1957
1958	/**
1959	* INC and DEC emulation.
1960	*/
1961	static int emInterpretIncDec(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
1962	PFNEMULATEPARAM2 pfnEmulate)
1963	{
1964	DISQPVPARAMVAL param1;
1965	NOREF(pvFault);
1966
1967	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
1968	if(RT_FAILURE(rc))
1969	return VERR_EM_INTERPRETER;
1970
1971	#ifdef IN_RC
1972	if (TRPMHasTrap(pVCpu))
1973	{
1974	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1975	{
1976	#endif
1977	RTGCPTR pParam1 = 0;
1978	uint64_t valpar1;
1979
1980	if (param1.type == DISQPV_TYPE_ADDRESS)
1981	{
1982	pParam1 = (RTGCPTR)param1.val.val64;
1983	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
1984	#ifdef IN_RC
1985	/* Safety check (in theory it could cross a page boundary and fault there though) */
1986	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
1987	#endif
1988	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
1989	if (RT_FAILURE(rc))
1990	{
1991	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1992	return VERR_EM_INTERPRETER;
1993	}
1994	}
1995	else
1996	{
1997	AssertFailed();
1998	return VERR_EM_INTERPRETER;
1999	}
2000
2001	uint32_t eflags;
2002
2003	eflags = pfnEmulate(&valpar1, param1.size);
2004
2005	/* Write result back */
2006	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2007	if (RT_FAILURE(rc))
2008	{
2009	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2010	return VERR_EM_INTERPRETER;
2011	}
2012
2013	/* Update guest's eflags and finish. */
2014	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2015	\| (eflags & (X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2016
2017	/* All done! */
2018	*pcbSize = param1.size;
2019	return VINF_SUCCESS;
2020	#ifdef IN_RC
2021	}
2022	}
2023	return VERR_EM_INTERPRETER;
2024	#endif
2025	}
2026
2027
2028	/**
2029	* POP Emulation.
2030	*/
2031	static int emInterpretPop(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2032	{
2033	Assert(pDis->uCpuMode != DISCPUMODE_64BIT); /** @todo check */
2034	DISQPVPARAMVAL param1;
2035	NOREF(pvFault);
2036
2037	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2038	if(RT_FAILURE(rc))
2039	return VERR_EM_INTERPRETER;
2040
2041	#ifdef IN_RC
2042	if (TRPMHasTrap(pVCpu))
2043	{
2044	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2045	{
2046	#endif
2047	RTGCPTR pParam1 = 0;
2048	uint32_t valpar1;
2049	RTGCPTR pStackVal;
2050
2051	/* Read stack value first */
2052	if (CPUMGetGuestCodeBits(pVCpu) == 16)
2053	return VERR_EM_INTERPRETER; /* No legacy 16 bits stuff here, please. */
2054
2055	/* Convert address; don't bother checking limits etc, as we only read here */
2056	pStackVal = SELMToFlat(pVM, DISSELREG_SS, pRegFrame, (RTGCPTR)pRegFrame->esp);
2057	if (pStackVal == 0)
2058	return VERR_EM_INTERPRETER;
2059
2060	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pStackVal, param1.size);
2061	if (RT_FAILURE(rc))
2062	{
2063	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2064	return VERR_EM_INTERPRETER;
2065	}
2066
2067	if (param1.type == DISQPV_TYPE_ADDRESS)
2068	{
2069	pParam1 = (RTGCPTR)param1.val.val64;
2070
2071	/* pop [esp+xx] uses esp after the actual pop! */
2072	AssertCompile(DISGREG_ESP == DISGREG_SP);
2073	if ( (pDis->Param1.fUse & DISUSE_BASE)
2074	&& (pDis->Param1.fUse & (DISUSE_REG_GEN16\|DISUSE_REG_GEN32))
2075	&& pDis->Param1.Base.idxGenReg == DISGREG_ESP
2076	)
2077	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + param1.size);
2078
2079	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2080	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault \|\| (RTGCPTR)pRegFrame->esp == pvFault, VERR_EM_INTERPRETER);
2081	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2082	if (RT_FAILURE(rc))
2083	{
2084	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2085	return VERR_EM_INTERPRETER;
2086	}
2087
2088	/* Update ESP as the last step */
2089	pRegFrame->esp += param1.size;
2090	}
2091	else
2092	{
2093	#ifndef DEBUG_bird // annoying assertion.
2094	AssertFailed();
2095	#endif
2096	return VERR_EM_INTERPRETER;
2097	}
2098
2099	/* All done! */
2100	*pcbSize = param1.size;
2101	return VINF_SUCCESS;
2102	#ifdef IN_RC
2103	}
2104	}
2105	return VERR_EM_INTERPRETER;
2106	#endif
2107	}
2108
2109
2110	/**
2111	* XOR/OR/AND Emulation.
2112	*/
2113	static int emInterpretOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2114	PFNEMULATEPARAM3 pfnEmulate)
2115	{
2116	DISQPVPARAMVAL param1, param2;
2117	NOREF(pvFault);
2118
2119	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2120	if(RT_FAILURE(rc))
2121	return VERR_EM_INTERPRETER;
2122
2123	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2124	if(RT_FAILURE(rc))
2125	return VERR_EM_INTERPRETER;
2126
2127	#ifdef IN_RC
2128	if (TRPMHasTrap(pVCpu))
2129	{
2130	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2131	{
2132	#endif
2133	RTGCPTR pParam1;
2134	uint64_t valpar1, valpar2;
2135
2136	if (pDis->Param1.cb != pDis->Param2.cb)
2137	{
2138	if (pDis->Param1.cb < pDis->Param2.cb)
2139	{
2140	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb)); /* should never happen! */
2141	return VERR_EM_INTERPRETER;
2142	}
2143	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2144	pDis->Param2.cb = pDis->Param1.cb;
2145	param2.size = param1.size;
2146	}
2147
2148	/* The destination is always a virtual address */
2149	if (param1.type == DISQPV_TYPE_ADDRESS)
2150	{
2151	pParam1 = (RTGCPTR)param1.val.val64;
2152	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2153	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2154	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2155	if (RT_FAILURE(rc))
2156	{
2157	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2158	return VERR_EM_INTERPRETER;
2159	}
2160	}
2161	else
2162	{
2163	AssertFailed();
2164	return VERR_EM_INTERPRETER;
2165	}
2166
2167	/* Register or immediate data */
2168	switch(param2.type)
2169	{
2170	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2171	valpar2 = param2.val.val64;
2172	break;
2173
2174	default:
2175	AssertFailed();
2176	return VERR_EM_INTERPRETER;
2177	}
2178
2179	LogFlow(("emInterpretOrXorAnd %s %RGv %RX64 - %RX64 size %d (%d)\n", emGetMnemonic(pDis), pParam1, valpar1, valpar2, param2.size, param1.size));
2180
2181	/* Data read, emulate instruction. */
2182	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
2183
2184	LogFlow(("emInterpretOrXorAnd %s result %RX64\n", emGetMnemonic(pDis), valpar1));
2185
2186	/* Update guest's eflags and finish. */
2187	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2188	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2189
2190	/* And write it back */
2191	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2192	if (RT_SUCCESS(rc))
2193	{
2194	/* All done! */
2195	*pcbSize = param2.size;
2196	return VINF_SUCCESS;
2197	}
2198	#ifdef IN_RC
2199	}
2200	}
2201	#endif
2202	return VERR_EM_INTERPRETER;
2203	}
2204
2205
2206	#ifndef VBOX_COMPARE_IEM_AND_EM
2207	/**
2208	* LOCK XOR/OR/AND Emulation.
2209	*/
2210	static int emInterpretLockOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
2211	uint32_t *pcbSize, PFNEMULATELOCKPARAM3 pfnEmulate)
2212	{
2213	void *pvParam1;
2214	DISQPVPARAMVAL param1, param2;
2215	NOREF(pvFault);
2216
2217	#if HC_ARCH_BITS == 32
2218	Assert(pDis->Param1.cb <= 4);
2219	#endif
2220
2221	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2222	if(RT_FAILURE(rc))
2223	return VERR_EM_INTERPRETER;
2224
2225	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2226	if(RT_FAILURE(rc))
2227	return VERR_EM_INTERPRETER;
2228
2229	if (pDis->Param1.cb != pDis->Param2.cb)
2230	{
2231	AssertMsgReturn(pDis->Param1.cb >= pDis->Param2.cb, /* should never happen! */
2232	("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb),
2233	VERR_EM_INTERPRETER);
2234
2235	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2236	pDis->Param2.cb = pDis->Param1.cb;
2237	param2.size = param1.size;
2238	}
2239
2240	#ifdef IN_RC
2241	/* Safety check (in theory it could cross a page boundary and fault there though) */
2242	Assert( TRPMHasTrap(pVCpu)
2243	&& (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW));
2244	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
2245	#endif
2246
2247	/* Register and immediate data == DISQPV_TYPE_IMMEDIATE */
2248	AssertReturn(param2.type == DISQPV_TYPE_IMMEDIATE, VERR_EM_INTERPRETER);
2249	RTGCUINTREG ValPar2 = param2.val.val64;
2250
2251	/* The destination is always a virtual address */
2252	AssertReturn(param1.type == DISQPV_TYPE_ADDRESS, VERR_EM_INTERPRETER);
2253
2254	RTGCPTR GCPtrPar1 = param1.val.val64;
2255	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2256	PGMPAGEMAPLOCK Lock;
2257	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2258	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2259
2260	/* Try emulate it with a one-shot #PF handler in place. (RC) */
2261	Log2(("%s %RGv imm%d=%RX64\n", emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2262
2263	RTGCUINTREG32 eflags = 0;
2264	rc = pfnEmulate(pvParam1, ValPar2, pDis->Param2.cb, &eflags);
2265	PGMPhysReleasePageMappingLock(pVM, &Lock);
2266	if (RT_FAILURE(rc))
2267	{
2268	Log(("%s %RGv imm%d=%RX64-> emulation failed due to page fault!\n", emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2269	return VERR_EM_INTERPRETER;
2270	}
2271
2272	/* Update guest's eflags and finish. */
2273	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2274	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2275
2276	*pcbSize = param2.size;
2277	return VINF_SUCCESS;
2278	}
2279	#endif /* !VBOX_COMPARE_IEM_AND_EM */
2280
2281
2282	/**
2283	* ADD, ADC & SUB Emulation.
2284	*/
2285	static int emInterpretAddSub(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2286	PFNEMULATEPARAM3 pfnEmulate)
2287	{
2288	NOREF(pvFault);
2289	DISQPVPARAMVAL param1, param2;
2290	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2291	if(RT_FAILURE(rc))
2292	return VERR_EM_INTERPRETER;
2293
2294	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2295	if(RT_FAILURE(rc))
2296	return VERR_EM_INTERPRETER;
2297
2298	#ifdef IN_RC
2299	if (TRPMHasTrap(pVCpu))
2300	{
2301	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2302	{
2303	#endif
2304	RTGCPTR pParam1;
2305	uint64_t valpar1, valpar2;
2306
2307	if (pDis->Param1.cb != pDis->Param2.cb)
2308	{
2309	if (pDis->Param1.cb < pDis->Param2.cb)
2310	{
2311	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb)); /* should never happen! */
2312	return VERR_EM_INTERPRETER;
2313	}
2314	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2315	pDis->Param2.cb = pDis->Param1.cb;
2316	param2.size = param1.size;
2317	}
2318
2319	/* The destination is always a virtual address */
2320	if (param1.type == DISQPV_TYPE_ADDRESS)
2321	{
2322	pParam1 = (RTGCPTR)param1.val.val64;
2323	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2324	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2325	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2326	if (RT_FAILURE(rc))
2327	{
2328	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2329	return VERR_EM_INTERPRETER;
2330	}
2331	}
2332	else
2333	{
2334	#ifndef DEBUG_bird
2335	AssertFailed();
2336	#endif
2337	return VERR_EM_INTERPRETER;
2338	}
2339
2340	/* Register or immediate data */
2341	switch(param2.type)
2342	{
2343	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2344	valpar2 = param2.val.val64;
2345	break;
2346
2347	default:
2348	AssertFailed();
2349	return VERR_EM_INTERPRETER;
2350	}
2351
2352	/* Data read, emulate instruction. */
2353	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
2354
2355	/* Update guest's eflags and finish. */
2356	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2357	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2358
2359	/* And write it back */
2360	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2361	if (RT_SUCCESS(rc))
2362	{
2363	/* All done! */
2364	*pcbSize = param2.size;
2365	return VINF_SUCCESS;
2366	}
2367	#ifdef IN_RC
2368	}
2369	}
2370	#endif
2371	return VERR_EM_INTERPRETER;
2372	}
2373
2374
2375	/**
2376	* ADC Emulation.
2377	*/
2378	static int emInterpretAdc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2379	{
2380	if (pRegFrame->eflags.Bits.u1CF)
2381	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdcWithCarrySet);
2382	else
2383	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdd);
2384	}
2385
2386
2387	/**
2388	* BTR/C/S Emulation.
2389	*/
2390	static int emInterpretBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2391	PFNEMULATEPARAM2UINT32 pfnEmulate)
2392	{
2393	DISQPVPARAMVAL param1, param2;
2394	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2395	if(RT_FAILURE(rc))
2396	return VERR_EM_INTERPRETER;
2397
2398	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2399	if(RT_FAILURE(rc))
2400	return VERR_EM_INTERPRETER;
2401
2402	#ifdef IN_RC
2403	if (TRPMHasTrap(pVCpu))
2404	{
2405	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2406	{
2407	#endif
2408	RTGCPTR pParam1;
2409	uint64_t valpar1 = 0, valpar2;
2410	uint32_t eflags;
2411
2412	/* The destination is always a virtual address */
2413	if (param1.type != DISQPV_TYPE_ADDRESS)
2414	return VERR_EM_INTERPRETER;
2415
2416	pParam1 = (RTGCPTR)param1.val.val64;
2417	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2418
2419	/* Register or immediate data */
2420	switch(param2.type)
2421	{
2422	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2423	valpar2 = param2.val.val64;
2424	break;
2425
2426	default:
2427	AssertFailed();
2428	return VERR_EM_INTERPRETER;
2429	}
2430
2431	Log2(("emInterpret%s: pvFault=%RGv pParam1=%RGv val2=%x\n", emGetMnemonic(pDis), pvFault, pParam1, valpar2));
2432	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + valpar2/8);
2433	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)pParam1 & ~3) == pvFault, VERR_EM_INTERPRETER); NOREF(pvFault);
2434	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, 1);
2435	if (RT_FAILURE(rc))
2436	{
2437	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2438	return VERR_EM_INTERPRETER;
2439	}
2440
2441	Log2(("emInterpretBtx: val=%x\n", valpar1));
2442	/* Data read, emulate bit test instruction. */
2443	eflags = pfnEmulate(&valpar1, valpar2 & 0x7);
2444
2445	Log2(("emInterpretBtx: val=%x CF=%d\n", valpar1, !!(eflags & X86_EFL_CF)));
2446
2447	/* Update guest's eflags and finish. */
2448	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2449	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2450
2451	/* And write it back */
2452	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, 1);
2453	if (RT_SUCCESS(rc))
2454	{
2455	/* All done! */
2456	*pcbSize = 1;
2457	return VINF_SUCCESS;
2458	}
2459	#ifdef IN_RC
2460	}
2461	}
2462	#endif
2463	return VERR_EM_INTERPRETER;
2464	}
2465
2466
2467	#ifndef VBOX_COMPARE_IEM_AND_EM
2468	/**
2469	* LOCK BTR/C/S Emulation.
2470	*/
2471	static int emInterpretLockBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
2472	uint32_t *pcbSize, PFNEMULATELOCKPARAM2 pfnEmulate)
2473	{
2474	void *pvParam1;
2475
2476	DISQPVPARAMVAL param1, param2;
2477	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2478	if(RT_FAILURE(rc))
2479	return VERR_EM_INTERPRETER;
2480
2481	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2482	if(RT_FAILURE(rc))
2483	return VERR_EM_INTERPRETER;
2484
2485	/* The destination is always a virtual address */
2486	if (param1.type != DISQPV_TYPE_ADDRESS)
2487	return VERR_EM_INTERPRETER;
2488
2489	/* Register and immediate data == DISQPV_TYPE_IMMEDIATE */
2490	AssertReturn(param2.type == DISQPV_TYPE_IMMEDIATE, VERR_EM_INTERPRETER);
2491	uint64_t ValPar2 = param2.val.val64;
2492
2493	/* Adjust the parameters so what we're dealing with is a bit within the byte pointed to. */
2494	RTGCPTR GCPtrPar1 = param1.val.val64;
2495	GCPtrPar1 = (GCPtrPar1 + ValPar2 / 8);
2496	ValPar2 &= 7;
2497
2498	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2499	#ifdef IN_RC
2500	Assert(TRPMHasTrap(pVCpu));
2501	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)GCPtrPar1 & ~(RTGCUINTPTR)3) == pvFault, VERR_EM_INTERPRETER);
2502	#endif
2503
2504	PGMPAGEMAPLOCK Lock;
2505	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2506	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2507
2508	Log2(("emInterpretLockBitTest %s: pvFault=%RGv GCPtrPar1=%RGv imm=%RX64\n", emGetMnemonic(pDis), pvFault, GCPtrPar1, ValPar2));
2509	NOREF(pvFault);
2510
2511	/* Try emulate it with a one-shot #PF handler in place. (RC) */
2512	RTGCUINTREG32 eflags = 0;
2513	rc = pfnEmulate(pvParam1, ValPar2, &eflags);
2514	PGMPhysReleasePageMappingLock(pVM, &Lock);
2515	if (RT_FAILURE(rc))
2516	{
2517	Log(("emInterpretLockBitTest %s: %RGv imm%d=%RX64 -> emulation failed due to page fault!\n",
2518	emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2519	return VERR_EM_INTERPRETER;
2520	}
2521
2522	Log2(("emInterpretLockBitTest %s: GCPtrPar1=%RGv imm=%RX64 CF=%d\n", emGetMnemonic(pDis), GCPtrPar1, ValPar2, !!(eflags & X86_EFL_CF)));
2523
2524	/* Update guest's eflags and finish. */
2525	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2526	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2527
2528	*pcbSize = 1;
2529	return VINF_SUCCESS;
2530	}
2531	#endif /* !VBOX_COMPARE_IEM_AND_EM */
2532
2533
2534	/**
2535	* MOV emulation.
2536	*/
2537	static int emInterpretMov(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2538	{
2539	NOREF(pvFault);
2540	DISQPVPARAMVAL param1, param2;
2541	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2542	if(RT_FAILURE(rc))
2543	return VERR_EM_INTERPRETER;
2544
2545	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2546	if(RT_FAILURE(rc))
2547	return VERR_EM_INTERPRETER;
2548
2549	/* If destination is a segment register, punt. We can't handle it here.
2550	* NB: Source can be a register and still trigger a #PF!
2551	*/
2552	if (RT_UNLIKELY(pDis->Param1.fUse == DISUSE_REG_SEG))
2553	return VERR_EM_INTERPRETER;
2554
2555	if (param1.type == DISQPV_TYPE_ADDRESS)
2556	{
2557	RTGCPTR pDest;
2558	uint64_t val64;
2559
2560	switch(param1.type)
2561	{
2562	case DISQPV_TYPE_IMMEDIATE:
2563	if(!(param1.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
2564	return VERR_EM_INTERPRETER;
2565	/* fallthru */
2566
2567	case DISQPV_TYPE_ADDRESS:
2568	pDest = (RTGCPTR)param1.val.val64;
2569	pDest = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pDest);
2570	break;
2571
2572	default:
2573	AssertFailed();
2574	return VERR_EM_INTERPRETER;
2575	}
2576
2577	switch(param2.type)
2578	{
2579	case DISQPV_TYPE_IMMEDIATE: /* register type is translated to this one too */
2580	val64 = param2.val.val64;
2581	break;
2582
2583	default:
2584	Log(("emInterpretMov: unexpected type=%d rip=%RGv\n", param2.type, (RTGCPTR)pRegFrame->rip));
2585	return VERR_EM_INTERPRETER;
2586	}
2587	#ifdef LOG_ENABLED
2588	if (pDis->uCpuMode == DISCPUMODE_64BIT)
2589	LogFlow(("EMInterpretInstruction at %RGv: OP_MOV %RGv <- %RX64 (%d) &val64=%RHv\n", (RTGCPTR)pRegFrame->rip, pDest, val64, param2.size, &val64));
2590	else
2591	LogFlow(("EMInterpretInstruction at %08RX64: OP_MOV %RGv <- %08X (%d) &val64=%RHv\n", pRegFrame->rip, pDest, (uint32_t)val64, param2.size, &val64));
2592	#endif
2593
2594	Assert(param2.size <= 8 && param2.size > 0);
2595	EM_ASSERT_FAULT_RETURN(pDest == pvFault, VERR_EM_INTERPRETER);
2596	rc = emRamWrite(pVM, pVCpu, pRegFrame, pDest, &val64, param2.size);
2597	if (RT_FAILURE(rc))
2598	return VERR_EM_INTERPRETER;
2599
2600	*pcbSize = param2.size;
2601	}
2602	#if defined(IN_RC) && defined(VBOX_WITH_RAW_RING1)
2603	/* mov xx, cs instruction is dangerous in raw mode and replaced by an 'int3' by csam/patm. */
2604	else if ( param1.type == DISQPV_TYPE_REGISTER
2605	&& param2.type == DISQPV_TYPE_REGISTER)
2606	{
2607	AssertReturn((pDis->Param1.fUse & (DISUSE_REG_GEN8\|DISUSE_REG_GEN16\|DISUSE_REG_GEN32)), VERR_EM_INTERPRETER);
2608	AssertReturn(pDis->Param2.fUse == DISUSE_REG_SEG, VERR_EM_INTERPRETER);
2609	AssertReturn(pDis->Param2.Base.idxSegReg == DISSELREG_CS, VERR_EM_INTERPRETER);
2610
2611	uint32_t u32Cpl = CPUMRCGetGuestCPL(pVCpu, pRegFrame);
2612	uint32_t uValCS = (pRegFrame->cs.Sel & ~X86_SEL_RPL) \| u32Cpl;
2613
2614	Log(("EMInterpretInstruction: OP_MOV cs=%x->%x\n", pRegFrame->cs.Sel, uValCS));
2615	switch (param1.size)
2616	{
2617	case 1: rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t) uValCS); break;
2618	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)uValCS); break;
2619	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)uValCS); break;
2620	default:
2621	AssertFailed();
2622	return VERR_EM_INTERPRETER;
2623	}
2624	AssertRCReturn(rc, rc);
2625	}
2626	#endif
2627	else
2628	{ /* read fault */
2629	RTGCPTR pSrc;
2630	uint64_t val64;
2631
2632	/* Source */
2633	switch(param2.type)
2634	{
2635	case DISQPV_TYPE_IMMEDIATE:
2636	if(!(param2.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
2637	return VERR_EM_INTERPRETER;
2638	/* fallthru */
2639
2640	case DISQPV_TYPE_ADDRESS:
2641	pSrc = (RTGCPTR)param2.val.val64;
2642	pSrc = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param2, pSrc);
2643	break;
2644
2645	default:
2646	return VERR_EM_INTERPRETER;
2647	}
2648
2649	Assert(param1.size <= 8 && param1.size > 0);
2650	EM_ASSERT_FAULT_RETURN(pSrc == pvFault, VERR_EM_INTERPRETER);
2651	rc = emRamRead(pVM, pVCpu, pRegFrame, &val64, pSrc, param1.size);
2652	if (RT_FAILURE(rc))
2653	return VERR_EM_INTERPRETER;
2654
2655	/* Destination */
2656	switch(param1.type)
2657	{
2658	case DISQPV_TYPE_REGISTER:
2659	switch(param1.size)
2660	{
2661	case 1: rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t) val64); break;
2662	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)val64); break;
2663	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)val64); break;
2664	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param1.Base.idxGenReg, val64); break;
2665	default:
2666	return VERR_EM_INTERPRETER;
2667	}
2668	if (RT_FAILURE(rc))
2669	return rc;
2670	break;
2671
2672	default:
2673	return VERR_EM_INTERPRETER;
2674	}
2675	#ifdef LOG_ENABLED
2676	if (pDis->uCpuMode == DISCPUMODE_64BIT)
2677	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %RX64 (%d)\n", pSrc, val64, param1.size));
2678	else
2679	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %08X (%d)\n", pSrc, (uint32_t)val64, param1.size));
2680	#endif
2681	}
2682	return VINF_SUCCESS;
2683	}
2684
2685
2686	#ifndef IN_RC
2687	/**
2688	* [REP] STOSWD emulation
2689	*/
2690	static int emInterpretStosWD(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2691	{
2692	int rc;
2693	RTGCPTR GCDest, GCOffset;
2694	uint32_t cbSize;
2695	uint64_t cTransfers;
2696	int offIncrement;
2697	NOREF(pvFault);
2698
2699	/* Don't support any but these three prefix bytes. */
2700	if ((pDis->fPrefix & ~(DISPREFIX_ADDRSIZE\|DISPREFIX_OPSIZE\|DISPREFIX_REP\|DISPREFIX_REX)))
2701	return VERR_EM_INTERPRETER;
2702
2703	switch (pDis->uAddrMode)
2704	{
2705	case DISCPUMODE_16BIT:
2706	GCOffset = pRegFrame->di;
2707	cTransfers = pRegFrame->cx;
2708	break;
2709	case DISCPUMODE_32BIT:
2710	GCOffset = pRegFrame->edi;
2711	cTransfers = pRegFrame->ecx;
2712	break;
2713	case DISCPUMODE_64BIT:
2714	GCOffset = pRegFrame->rdi;
2715	cTransfers = pRegFrame->rcx;
2716	break;
2717	default:
2718	AssertFailed();
2719	return VERR_EM_INTERPRETER;
2720	}
2721
2722	GCDest = SELMToFlat(pVM, DISSELREG_ES, pRegFrame, GCOffset);
2723	switch (pDis->uOpMode)
2724	{
2725	case DISCPUMODE_16BIT:
2726	cbSize = 2;
2727	break;
2728	case DISCPUMODE_32BIT:
2729	cbSize = 4;
2730	break;
2731	case DISCPUMODE_64BIT:
2732	cbSize = 8;
2733	break;
2734	default:
2735	AssertFailed();
2736	return VERR_EM_INTERPRETER;
2737	}
2738
2739	offIncrement = pRegFrame->eflags.Bits.u1DF ? -(signed)cbSize : (signed)cbSize;
2740
2741	if (!(pDis->fPrefix & DISPREFIX_REP))
2742	{
2743	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d\n", pRegFrame->es.Sel, GCOffset, GCDest, cbSize));
2744
2745	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
2746	if (RT_FAILURE(rc))
2747	return VERR_EM_INTERPRETER;
2748	Assert(rc == VINF_SUCCESS);
2749
2750	/* Update (e/r)di. */
2751	switch (pDis->uAddrMode)
2752	{
2753	case DISCPUMODE_16BIT:
2754	pRegFrame->di += offIncrement;
2755	break;
2756	case DISCPUMODE_32BIT:
2757	pRegFrame->edi += offIncrement;
2758	break;
2759	case DISCPUMODE_64BIT:
2760	pRegFrame->rdi += offIncrement;
2761	break;
2762	default:
2763	AssertFailed();
2764	return VERR_EM_INTERPRETER;
2765	}
2766
2767	}
2768	else
2769	{
2770	if (!cTransfers)
2771	return VINF_SUCCESS;
2772
2773	/*
2774	* Do not try emulate cross page stuff here because we don't know what might
2775	* be waiting for us on the subsequent pages. The caller has only asked us to
2776	* ignore access handlers fro the current page.
2777	* This also fends off big stores which would quickly kill PGMR0DynMap.
2778	*/
2779	if ( cbSize > PAGE_SIZE
2780	\|\| cTransfers > PAGE_SIZE
2781	\|\| (GCDest >> PAGE_SHIFT) != ((GCDest + offIncrement * cTransfers) >> PAGE_SHIFT))
2782	{
2783	Log(("STOSWD is crosses pages, chicken out to the recompiler; GCDest=%RGv cbSize=%#x offIncrement=%d cTransfers=%#x\n",
2784	GCDest, cbSize, offIncrement, cTransfers));
2785	return VERR_EM_INTERPRETER;
2786	}
2787
2788	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d cTransfers=%x DF=%d\n", pRegFrame->es.Sel, GCOffset, GCDest, cbSize, cTransfers, pRegFrame->eflags.Bits.u1DF));
2789	/* Access verification first; we currently can't recover properly from traps inside this instruction */
2790	rc = PGMVerifyAccess(pVCpu, GCDest - ((offIncrement > 0) ? 0 : ((cTransfers-1) * cbSize)),
2791	cTransfers * cbSize,
2792	X86_PTE_RW \| (CPUMGetGuestCPL(pVCpu) == 3 ? X86_PTE_US : 0));
2793	if (rc != VINF_SUCCESS)
2794	{
2795	Log(("STOSWD will generate a trap -> recompiler, rc=%d\n", rc));
2796	return VERR_EM_INTERPRETER;
2797	}
2798
2799	/* REP case */
2800	while (cTransfers)
2801	{
2802	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
2803	if (RT_FAILURE(rc))
2804	{
2805	rc = VERR_EM_INTERPRETER;
2806	break;
2807	}
2808
2809	Assert(rc == VINF_SUCCESS);
2810	GCOffset += offIncrement;
2811	GCDest += offIncrement;
2812	cTransfers--;
2813	}
2814
2815	/* Update the registers. */
2816	switch (pDis->uAddrMode)
2817	{
2818	case DISCPUMODE_16BIT:
2819	pRegFrame->di = GCOffset;
2820	pRegFrame->cx = cTransfers;
2821	break;
2822	case DISCPUMODE_32BIT:
2823	pRegFrame->edi = GCOffset;
2824	pRegFrame->ecx = cTransfers;
2825	break;
2826	case DISCPUMODE_64BIT:
2827	pRegFrame->rdi = GCOffset;
2828	pRegFrame->rcx = cTransfers;
2829	break;
2830	default:
2831	AssertFailed();
2832	return VERR_EM_INTERPRETER;
2833	}
2834	}
2835
2836	*pcbSize = cbSize;
2837	return rc;
2838	}
2839	#endif /* !IN_RC */
2840
2841
2842	/**
2843	* [LOCK] CMPXCHG emulation.
2844	*/
2845	static int emInterpretCmpXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2846	{
2847	DISQPVPARAMVAL param1, param2;
2848	NOREF(pvFault);
2849
2850	#if HC_ARCH_BITS == 32
2851	Assert(pDis->Param1.cb <= 4);
2852	#endif
2853
2854	/* Source to make DISQueryParamVal read the register value - ugly hack */
2855	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
2856	if(RT_FAILURE(rc))
2857	return VERR_EM_INTERPRETER;
2858
2859	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2860	if(RT_FAILURE(rc))
2861	return VERR_EM_INTERPRETER;
2862
2863	uint64_t valpar;
2864	switch(param2.type)
2865	{
2866	case DISQPV_TYPE_IMMEDIATE: /* register actually */
2867	valpar = param2.val.val64;
2868	break;
2869
2870	default:
2871	return VERR_EM_INTERPRETER;
2872	}
2873
2874	PGMPAGEMAPLOCK Lock;
2875	RTGCPTR GCPtrPar1;
2876	void *pvParam1;
2877	uint64_t eflags;
2878
2879	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
2880	switch(param1.type)
2881	{
2882	case DISQPV_TYPE_ADDRESS:
2883	GCPtrPar1 = param1.val.val64;
2884	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2885
2886	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2887	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2888	break;
2889
2890	default:
2891	return VERR_EM_INTERPRETER;
2892	}
2893
2894	LogFlow(("%s %RGv rax=%RX64 %RX64\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar));
2895
2896	#ifndef VBOX_COMPARE_IEM_AND_EM
2897	if (pDis->fPrefix & DISPREFIX_LOCK)
2898	eflags = EMEmulateLockCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->Param2.cb);
2899	else
2900	eflags = EMEmulateCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->Param2.cb);
2901	#else /* VBOX_COMPARE_IEM_AND_EM */
2902	uint64_t u64;
2903	switch (pDis->Param2.cb)
2904	{
2905	case 1: u64 = (uint8_t )pvParam1; break;
2906	case 2: u64 = (uint16_t )pvParam1; break;
2907	case 4: u64 = (uint32_t )pvParam1; break;
2908	default:
2909	case 8: u64 = (uint64_t )pvParam1; break;
2910	}
2911	eflags = EMEmulateCmpXchg(&u64, &pRegFrame->rax, valpar, pDis->Param2.cb);
2912	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, pDis->Param2.cb); AssertRCSuccess(rc2);
2913	#endif /* VBOX_COMPARE_IEM_AND_EM */
2914
2915	LogFlow(("%s %RGv rax=%RX64 %RX64 ZF=%d\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar, !!(eflags & X86_EFL_ZF)));
2916
2917	/* Update guest's eflags and finish. */
2918	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2919	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2920
2921	*pcbSize = param2.size;
2922	PGMPhysReleasePageMappingLock(pVM, &Lock);
2923	return VINF_SUCCESS;
2924	}
2925
2926
2927	/**
2928	* [LOCK] CMPXCHG8B emulation.
2929	*/
2930	static int emInterpretCmpXchg8b(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2931	{
2932	DISQPVPARAMVAL param1;
2933	NOREF(pvFault);
2934
2935	/* Source to make DISQueryParamVal read the register value - ugly hack */
2936	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
2937	if(RT_FAILURE(rc))
2938	return VERR_EM_INTERPRETER;
2939
2940	RTGCPTR GCPtrPar1;
2941	void *pvParam1;
2942	uint64_t eflags;
2943	PGMPAGEMAPLOCK Lock;
2944
2945	AssertReturn(pDis->Param1.cb == 8, VERR_EM_INTERPRETER);
2946	switch(param1.type)
2947	{
2948	case DISQPV_TYPE_ADDRESS:
2949	GCPtrPar1 = param1.val.val64;
2950	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2951
2952	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2953	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2954	break;
2955
2956	default:
2957	return VERR_EM_INTERPRETER;
2958	}
2959
2960	LogFlow(("%s %RGv=%p eax=%08x\n", emGetMnemonic(pDis), GCPtrPar1, pvParam1, pRegFrame->eax));
2961
2962	#ifndef VBOX_COMPARE_IEM_AND_EM
2963	if (pDis->fPrefix & DISPREFIX_LOCK)
2964	eflags = EMEmulateLockCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
2965	else
2966	eflags = EMEmulateCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
2967	#else /* VBOX_COMPARE_IEM_AND_EM */
2968	uint64_t u64 = (uint64_t )pvParam1;
2969	eflags = EMEmulateCmpXchg8b(&u64, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
2970	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, sizeof(u64)); AssertRCSuccess(rc2);
2971	#endif /* VBOX_COMPARE_IEM_AND_EM */
2972
2973	LogFlow(("%s %RGv=%p eax=%08x ZF=%d\n", emGetMnemonic(pDis), GCPtrPar1, pvParam1, pRegFrame->eax, !!(eflags & X86_EFL_ZF)));
2974
2975	/* Update guest's eflags and finish; note that only ZF is affected. */
2976	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_ZF))
2977	\| (eflags & (X86_EFL_ZF));
2978
2979	*pcbSize = 8;
2980	PGMPhysReleasePageMappingLock(pVM, &Lock);
2981	return VINF_SUCCESS;
2982	}
2983
2984
2985	#ifdef IN_RC /** @todo test+enable for HM as well. */
2986	/**
2987	* [LOCK] XADD emulation.
2988	*/
2989	static int emInterpretXAdd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2990	{
2991	Assert(pDis->uCpuMode != DISCPUMODE_64BIT); /** @todo check */
2992	DISQPVPARAMVAL param1;
2993	void *pvParamReg2;
2994	size_t cbParamReg2;
2995	NOREF(pvFault);
2996
2997	/* Source to make DISQueryParamVal read the register value - ugly hack */
2998	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
2999	if(RT_FAILURE(rc))
3000	return VERR_EM_INTERPRETER;
3001
3002	rc = DISQueryParamRegPtr(pRegFrame, pDis, &pDis->Param2, &pvParamReg2, &cbParamReg2);
3003	Assert(cbParamReg2 <= 4);
3004	if(RT_FAILURE(rc))
3005	return VERR_EM_INTERPRETER;
3006
3007	#ifdef IN_RC
3008	if (TRPMHasTrap(pVCpu))
3009	{
3010	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
3011	{
3012	#endif
3013	RTGCPTR GCPtrPar1;
3014	void *pvParam1;
3015	uint32_t eflags;
3016	PGMPAGEMAPLOCK Lock;
3017
3018	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
3019	switch(param1.type)
3020	{
3021	case DISQPV_TYPE_ADDRESS:
3022	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, (RTRCUINTPTR)param1.val.val64);
3023	#ifdef IN_RC
3024	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
3025	#endif
3026
3027	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
3028	AssertRCReturn(rc, VERR_EM_INTERPRETER);
3029	break;
3030
3031	default:
3032	return VERR_EM_INTERPRETER;
3033	}
3034
3035	LogFlow(("XAdd %RGv=%p reg=%08llx\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2));
3036
3037	#ifndef VBOX_COMPARE_IEM_AND_EM
3038	if (pDis->fPrefix & DISPREFIX_LOCK)
3039	eflags = EMEmulateLockXAdd(pvParam1, pvParamReg2, cbParamReg2);
3040	else
3041	eflags = EMEmulateXAdd(pvParam1, pvParamReg2, cbParamReg2);
3042	#else /* VBOX_COMPARE_IEM_AND_EM */
3043	uint64_t u64;
3044	switch (cbParamReg2)
3045	{
3046	case 1: u64 = (uint8_t )pvParam1; break;
3047	case 2: u64 = (uint16_t )pvParam1; break;
3048	case 4: u64 = (uint32_t )pvParam1; break;
3049	default:
3050	case 8: u64 = (uint64_t )pvParam1; break;
3051	}
3052	eflags = EMEmulateXAdd(&u64, pvParamReg2, cbParamReg2);
3053	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, pDis->Param2.cb); AssertRCSuccess(rc2);
3054	#endif /* VBOX_COMPARE_IEM_AND_EM */
3055
3056	LogFlow(("XAdd %RGv=%p reg=%08llx ZF=%d\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2, !!(eflags & X86_EFL_ZF) ));
3057
3058	/* Update guest's eflags and finish. */
3059	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
3060	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
3061
3062	*pcbSize = cbParamReg2;
3063	PGMPhysReleasePageMappingLock(pVM, &Lock);
3064	return VINF_SUCCESS;
3065	#ifdef IN_RC
3066	}
3067	}
3068
3069	return VERR_EM_INTERPRETER;
3070	#endif
3071	}
3072	#endif /* IN_RC */
3073
3074
3075	/**
3076	* WBINVD Emulation.
3077	*/
3078	static int emInterpretWbInvd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3079	{
3080	/* Nothing to do. */
3081	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3082	return VINF_SUCCESS;
3083	}
3084
3085
3086	/**
3087	* INVLPG Emulation.
3088	*/
3089	static VBOXSTRICTRC emInterpretInvlPg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3090	{
3091	DISQPVPARAMVAL param1;
3092	RTGCPTR addr;
3093	NOREF(pvFault); NOREF(pVM); NOREF(pcbSize);
3094
3095	VBOXSTRICTRC rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3096	if(RT_FAILURE(rc))
3097	return VERR_EM_INTERPRETER;
3098
3099	switch(param1.type)
3100	{
3101	case DISQPV_TYPE_IMMEDIATE:
3102	case DISQPV_TYPE_ADDRESS:
3103	if(!(param1.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
3104	return VERR_EM_INTERPRETER;
3105	addr = (RTGCPTR)param1.val.val64;
3106	break;
3107
3108	default:
3109	return VERR_EM_INTERPRETER;
3110	}
3111
3112	/** @todo is addr always a flat linear address or ds based
3113	* (in absence of segment override prefixes)????
3114	*/
3115	#ifdef IN_RC
3116	LogFlow(("RC: EMULATE: invlpg %RGv\n", addr));
3117	#endif
3118	rc = PGMInvalidatePage(pVCpu, addr);
3119	if ( rc == VINF_SUCCESS
3120	\|\| rc == VINF_PGM_SYNC_CR3 /* we can rely on the FF */)
3121	return VINF_SUCCESS;
3122	AssertMsgReturn(rc == VINF_EM_RAW_EMULATE_INSTR,
3123	("%Rrc addr=%RGv\n", VBOXSTRICTRC_VAL(rc), addr),
3124	VERR_EM_INTERPRETER);
3125	return rc;
3126	}
3127
3128	/** @todo change all these EMInterpretXXX methods to VBOXSTRICTRC. */
3129
3130	/**
3131	* CPUID Emulation.
3132	*/
3133	static int emInterpretCpuId(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3134	{
3135	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3136	int rc = EMInterpretCpuId(pVM, pVCpu, pRegFrame);
3137	return rc;
3138	}
3139
3140
3141	/**
3142	* CLTS Emulation.
3143	*/
3144	static int emInterpretClts(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3145	{
3146	NOREF(pVM); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3147
3148	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
3149	if (!(cr0 & X86_CR0_TS))
3150	return VINF_SUCCESS;
3151	return CPUMSetGuestCR0(pVCpu, cr0 & ~X86_CR0_TS);
3152	}
3153
3154
3155	/**
3156	* Update CRx.
3157	*
3158	* @returns VBox status code.
3159	* @param pVM The cross context VM structure.
3160	* @param pVCpu The cross context virtual CPU structure.
3161	* @param pRegFrame The register frame.
3162	* @param DestRegCrx CRx register index (DISUSE_REG_CR*)
3163	* @param val New CRx value
3164	*
3165	*/
3166	static int emUpdateCRx(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint64_t val)
3167	{
3168	uint64_t oldval;
3169	uint64_t msrEFER;
3170	uint32_t fValid;
3171	int rc, rc2;
3172	NOREF(pVM);
3173
3174	/** @todo Clean up this mess. */
3175	LogFlow(("emInterpretCRxWrite at %RGv CR%d <- %RX64\n", (RTGCPTR)pRegFrame->rip, DestRegCrx, val));
3176	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3177	switch (DestRegCrx)
3178	{
3179	case DISCREG_CR0:
3180	oldval = CPUMGetGuestCR0(pVCpu);
3181	#ifdef IN_RC
3182	/* CR0.WP and CR0.AM changes require a reschedule run in ring 3. */
3183	if ( (val & (X86_CR0_WP \| X86_CR0_AM))
3184	!= (oldval & (X86_CR0_WP \| X86_CR0_AM)))
3185	return VERR_EM_INTERPRETER;
3186	#endif
3187	rc = VINF_SUCCESS;
3188	#if !defined(VBOX_COMPARE_IEM_AND_EM) \|\| !defined(VBOX_COMPARE_IEM_LAST)
3189	CPUMSetGuestCR0(pVCpu, val);
3190	#else
3191	CPUMQueryGuestCtxPtr(pVCpu)->cr0 = val \| X86_CR0_ET;
3192	#endif
3193	val = CPUMGetGuestCR0(pVCpu);
3194	if ( (oldval & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE))
3195	!= (val & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE)))
3196	{
3197	/* global flush */
3198	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
3199	AssertRCReturn(rc, rc);
3200	}
3201
3202	/* Deal with long mode enabling/disabling. */
3203	msrEFER = CPUMGetGuestEFER(pVCpu);
3204	if (msrEFER & MSR_K6_EFER_LME)
3205	{
3206	if ( !(oldval & X86_CR0_PG)
3207	&& (val & X86_CR0_PG))
3208	{
3209	/* Illegal to have an active 64 bits CS selector (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
3210	if (pRegFrame->cs.Attr.n.u1Long)
3211	{
3212	AssertMsgFailed(("Illegal enabling of paging with CS.u1Long = 1!!\n"));
3213	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3214	}
3215
3216	/* Illegal to switch to long mode before activating PAE first (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
3217	if (!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PAE))
3218	{
3219	AssertMsgFailed(("Illegal enabling of paging with PAE disabled!!\n"));
3220	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3221	}
3222	msrEFER \|= MSR_K6_EFER_LMA;
3223	}
3224	else
3225	if ( (oldval & X86_CR0_PG)
3226	&& !(val & X86_CR0_PG))
3227	{
3228	msrEFER &= ~MSR_K6_EFER_LMA;
3229	/** @todo Do we need to cut off rip here? High dword of rip is undefined, so it shouldn't really matter. */
3230	}
3231	CPUMSetGuestEFER(pVCpu, msrEFER);
3232	}
3233	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
3234	return rc2 == VINF_SUCCESS ? rc : rc2;
3235
3236	case DISCREG_CR2:
3237	rc = CPUMSetGuestCR2(pVCpu, val); AssertRC(rc);
3238	return VINF_SUCCESS;
3239
3240	case DISCREG_CR3:
3241	/* Reloading the current CR3 means the guest just wants to flush the TLBs */
3242	rc = CPUMSetGuestCR3(pVCpu, val); AssertRC(rc);
3243	if (CPUMGetGuestCR0(pVCpu) & X86_CR0_PG)
3244	{
3245	/* flush */
3246	rc = PGMFlushTLB(pVCpu, val, !(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE));
3247	AssertRC(rc);
3248	}
3249	return rc;
3250
3251	case DISCREG_CR4:
3252	oldval = CPUMGetGuestCR4(pVCpu);
3253	rc = CPUMSetGuestCR4(pVCpu, val); AssertRC(rc);
3254	val = CPUMGetGuestCR4(pVCpu);
3255
3256	/* Illegal to disable PAE when long mode is active. (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
3257	msrEFER = CPUMGetGuestEFER(pVCpu);
3258	if ( (msrEFER & MSR_K6_EFER_LMA)
3259	&& (oldval & X86_CR4_PAE)
3260	&& !(val & X86_CR4_PAE))
3261	{
3262	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3263	}
3264
3265	/* From IEM iemCImpl_load_CrX. */
3266	/** @todo Check guest CPUID bits for determining corresponding valid bits. */
3267	fValid = X86_CR4_VME \| X86_CR4_PVI
3268	\| X86_CR4_TSD \| X86_CR4_DE
3269	\| X86_CR4_PSE \| X86_CR4_PAE
3270	\| X86_CR4_MCE \| X86_CR4_PGE
3271	\| X86_CR4_PCE \| X86_CR4_OSFXSR
3272	\| X86_CR4_OSXMMEEXCPT;
3273	//if (xxx)
3274	// fValid \|= X86_CR4_VMXE;
3275	//if (xxx)
3276	// fValid \|= X86_CR4_OSXSAVE;
3277	if (val & ~(uint64_t)fValid)
3278	{
3279	Log(("Trying to set reserved CR4 bits: NewCR4=%#llx InvalidBits=%#llx\n", val, val & ~(uint64_t)fValid));
3280	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3281	}
3282
3283	rc = VINF_SUCCESS;
3284	if ( (oldval & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE))
3285	!= (val & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE)))
3286	{
3287	/* global flush */
3288	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
3289	AssertRCReturn(rc, rc);
3290	}
3291
3292	/* Feeling extremely lazy. */
3293	# ifdef IN_RC
3294	if ( (oldval & (X86_CR4_OSFXSR\|X86_CR4_OSXMMEEXCPT\|X86_CR4_PCE\|X86_CR4_MCE\|X86_CR4_PAE\|X86_CR4_DE\|X86_CR4_TSD\|X86_CR4_PVI\|X86_CR4_VME))
3295	!= (val & (X86_CR4_OSFXSR\|X86_CR4_OSXMMEEXCPT\|X86_CR4_PCE\|X86_CR4_MCE\|X86_CR4_PAE\|X86_CR4_DE\|X86_CR4_TSD\|X86_CR4_PVI\|X86_CR4_VME)))
3296	{
3297	Log(("emInterpretMovCRx: CR4: %#RX64->%#RX64 => R3\n", oldval, val));
3298	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
3299	}
3300	# endif
3301	# ifdef VBOX_WITH_RAW_MODE
3302	if (((val ^ oldval) & X86_CR4_VME) && !HMIsEnabled(pVM))
3303	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
3304	# endif
3305
3306	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
3307	return rc2 == VINF_SUCCESS ? rc : rc2;
3308
3309	case DISCREG_CR8:
3310	return APICSetTpr(pVCpu, val << 4); /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */
3311
3312	default:
3313	AssertFailed();
3314	case DISCREG_CR1: /* illegal op */
3315	break;
3316	}
3317	return VERR_EM_INTERPRETER;
3318	}
3319
3320
3321	/**
3322	* LMSW Emulation.
3323	*/
3324	static int emInterpretLmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3325	{
3326	DISQPVPARAMVAL param1;
3327	uint32_t val;
3328	NOREF(pvFault); NOREF(pcbSize);
3329	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3330
3331	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3332	if(RT_FAILURE(rc))
3333	return VERR_EM_INTERPRETER;
3334
3335	switch(param1.type)
3336	{
3337	case DISQPV_TYPE_IMMEDIATE:
3338	case DISQPV_TYPE_ADDRESS:
3339	if(!(param1.flags & DISQPV_FLAG_16))
3340	return VERR_EM_INTERPRETER;
3341	val = param1.val.val32;
3342	break;
3343
3344	default:
3345	return VERR_EM_INTERPRETER;
3346	}
3347
3348	LogFlow(("emInterpretLmsw %x\n", val));
3349	uint64_t OldCr0 = CPUMGetGuestCR0(pVCpu);
3350
3351	/* Only PE, MP, EM and TS can be changed; note that PE can't be cleared by this instruction. */
3352	uint64_t NewCr0 = ( OldCr0 & ~( X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS))
3353	\| (val & (X86_CR0_PE \| X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS));
3354
3355	return emUpdateCRx(pVM, pVCpu, pRegFrame, DISCREG_CR0, NewCr0);
3356
3357	}
3358
3359	#ifdef EM_EMULATE_SMSW
3360	/**
3361	* SMSW Emulation.
3362	*/
3363	static int emInterpretSmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3364	{
3365	NOREF(pvFault); NOREF(pcbSize);
3366	DISQPVPARAMVAL param1;
3367	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
3368
3369	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3370	if(RT_FAILURE(rc))
3371	return VERR_EM_INTERPRETER;
3372
3373	switch(param1.type)
3374	{
3375	case DISQPV_TYPE_IMMEDIATE:
3376	if(param1.size != sizeof(uint16_t))
3377	return VERR_EM_INTERPRETER;
3378	LogFlow(("emInterpretSmsw %d <- cr0 (%x)\n", pDis->Param1.Base.idxGenReg, cr0));
3379	rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, cr0);
3380	break;
3381
3382	case DISQPV_TYPE_ADDRESS:
3383	{
3384	RTGCPTR pParam1;
3385
3386	/* Actually forced to 16 bits regardless of the operand size. */
3387	if(param1.size != sizeof(uint16_t))
3388	return VERR_EM_INTERPRETER;
3389
3390	pParam1 = (RTGCPTR)param1.val.val64;
3391	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
3392	LogFlow(("emInterpretSmsw %RGv <- cr0 (%x)\n", pParam1, cr0));
3393
3394	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &cr0, sizeof(uint16_t));
3395	if (RT_FAILURE(rc))
3396	{
3397	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
3398	return VERR_EM_INTERPRETER;
3399	}
3400	break;
3401	}
3402
3403	default:
3404	return VERR_EM_INTERPRETER;
3405	}
3406
3407	LogFlow(("emInterpretSmsw %x\n", cr0));
3408	return rc;
3409	}
3410	#endif
3411
3412
3413	/**
3414	* Interpret CRx read.
3415	*
3416	* @returns VBox status code.
3417	* @param pVM The cross context VM structure.
3418	* @param pVCpu The cross context virtual CPU structure.
3419	* @param pRegFrame The register frame.
3420	* @param DestRegGen General purpose register index (USE_REG_E**))
3421	* @param SrcRegCrx CRx register index (DISUSE_REG_CR*)
3422	*
3423	*/
3424	static int emInterpretCRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegCrx)
3425	{
3426	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3427	uint64_t val64;
3428	int rc = CPUMGetGuestCRx(pVCpu, SrcRegCrx, &val64);
3429	AssertMsgRCReturn(rc, ("CPUMGetGuestCRx %d failed\n", SrcRegCrx), VERR_EM_INTERPRETER);
3430	NOREF(pVM);
3431
3432	if (CPUMIsGuestIn64BitCode(pVCpu))
3433	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
3434	else
3435	rc = DISWriteReg32(pRegFrame, DestRegGen, val64);
3436
3437	if (RT_SUCCESS(rc))
3438	{
3439	LogFlow(("MOV_CR: gen32=%d CR=%d val=%RX64\n", DestRegGen, SrcRegCrx, val64));
3440	return VINF_SUCCESS;
3441	}
3442	return VERR_EM_INTERPRETER;
3443	}
3444
3445
3446	/**
3447	* Interpret CRx write.
3448	*
3449	* @returns VBox status code.
3450	* @param pVM The cross context VM structure.
3451	* @param pVCpu The cross context virtual CPU structure.
3452	* @param pRegFrame The register frame.
3453	* @param DestRegCrx CRx register index (DISUSE_REG_CR*)
3454	* @param SrcRegGen General purpose register index (USE_REG_E**))
3455	*
3456	*/
3457	static int emInterpretCRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint32_t SrcRegGen)
3458	{
3459	uint64_t val;
3460	int rc;
3461	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3462
3463	if (CPUMIsGuestIn64BitCode(pVCpu))
3464	rc = DISFetchReg64(pRegFrame, SrcRegGen, &val);
3465	else
3466	{
3467	uint32_t val32;
3468	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
3469	val = val32;
3470	}
3471
3472	if (RT_SUCCESS(rc))
3473	return emUpdateCRx(pVM, pVCpu, pRegFrame, DestRegCrx, val);
3474
3475	return VERR_EM_INTERPRETER;
3476	}
3477
3478
3479	/**
3480	* MOV CRx
3481	*/
3482	static int emInterpretMovCRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3483	{
3484	NOREF(pvFault); NOREF(pcbSize);
3485	if ((pDis->Param1.fUse == DISUSE_REG_GEN32 \|\| pDis->Param1.fUse == DISUSE_REG_GEN64) && pDis->Param2.fUse == DISUSE_REG_CR)
3486	return emInterpretCRxRead(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxGenReg, pDis->Param2.Base.idxCtrlReg);
3487
3488	if (pDis->Param1.fUse == DISUSE_REG_CR && (pDis->Param2.fUse == DISUSE_REG_GEN32 \|\| pDis->Param2.fUse == DISUSE_REG_GEN64))
3489	return emInterpretCRxWrite(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxCtrlReg, pDis->Param2.Base.idxGenReg);
3490
3491	AssertMsgFailedReturn(("Unexpected control register move\n"), VERR_EM_INTERPRETER);
3492	}
3493
3494
3495	/**
3496	* MOV DRx
3497	*/
3498	static int emInterpretMovDRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3499	{
3500	int rc = VERR_EM_INTERPRETER;
3501	NOREF(pvFault); NOREF(pcbSize);
3502
3503	if((pDis->Param1.fUse == DISUSE_REG_GEN32 \|\| pDis->Param1.fUse == DISUSE_REG_GEN64) && pDis->Param2.fUse == DISUSE_REG_DBG)
3504	{
3505	rc = EMInterpretDRxRead(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxGenReg, pDis->Param2.Base.idxDbgReg);
3506	}
3507	else
3508	if(pDis->Param1.fUse == DISUSE_REG_DBG && (pDis->Param2.fUse == DISUSE_REG_GEN32 \|\| pDis->Param2.fUse == DISUSE_REG_GEN64))
3509	{
3510	rc = EMInterpretDRxWrite(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxDbgReg, pDis->Param2.Base.idxGenReg);
3511	}
3512	else
3513	AssertMsgFailed(("Unexpected debug register move\n"));
3514
3515	return rc;
3516	}
3517
3518
3519	/**
3520	* LLDT Emulation.
3521	*/
3522	static int emInterpretLLdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3523	{
3524	DISQPVPARAMVAL param1;
3525	RTSEL sel;
3526	NOREF(pVM); NOREF(pvFault); NOREF(pcbSize);
3527
3528	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3529	if(RT_FAILURE(rc))
3530	return VERR_EM_INTERPRETER;
3531
3532	switch(param1.type)
3533	{
3534	case DISQPV_TYPE_ADDRESS:
3535	return VERR_EM_INTERPRETER; //feeling lazy right now
3536
3537	case DISQPV_TYPE_IMMEDIATE:
3538	if(!(param1.flags & DISQPV_FLAG_16))
3539	return VERR_EM_INTERPRETER;
3540	sel = (RTSEL)param1.val.val16;
3541	break;
3542
3543	default:
3544	return VERR_EM_INTERPRETER;
3545	}
3546
3547	#ifdef IN_RING0
3548	/* Only for the VT-x real-mode emulation case. */
3549	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
3550	CPUMSetGuestLDTR(pVCpu, sel);
3551	return VINF_SUCCESS;
3552	#else
3553	if (sel == 0)
3554	{
3555	if (CPUMGetHyperLDTR(pVCpu) == 0)
3556	{
3557	// this simple case is most frequent in Windows 2000 (31k - boot & shutdown)
3558	return VINF_SUCCESS;
3559	}
3560	}
3561	//still feeling lazy
3562	return VERR_EM_INTERPRETER;
3563	#endif
3564	}
3565
3566	#ifdef IN_RING0
3567	/**
3568	* LIDT/LGDT Emulation.
3569	*/
3570	static int emInterpretLIGdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3571	{
3572	DISQPVPARAMVAL param1;
3573	RTGCPTR pParam1;
3574	X86XDTR32 dtr32;
3575	NOREF(pvFault); NOREF(pcbSize);
3576
3577	Log(("Emulate %s at %RGv\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip));
3578
3579	/* Only for the VT-x real-mode emulation case. */
3580	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
3581
3582	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3583	if(RT_FAILURE(rc))
3584	return VERR_EM_INTERPRETER;
3585
3586	switch(param1.type)
3587	{
3588	case DISQPV_TYPE_ADDRESS:
3589	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, param1.val.val16);
3590	break;
3591
3592	default:
3593	return VERR_EM_INTERPRETER;
3594	}
3595
3596	rc = emRamRead(pVM, pVCpu, pRegFrame, &dtr32, pParam1, sizeof(dtr32));
3597	AssertRCReturn(rc, VERR_EM_INTERPRETER);
3598
3599	if (!(pDis->fPrefix & DISPREFIX_OPSIZE))
3600	dtr32.uAddr &= 0xffffff; /* 16 bits operand size */
3601
3602	if (pDis->pCurInstr->uOpcode == OP_LIDT)
3603	CPUMSetGuestIDTR(pVCpu, dtr32.uAddr, dtr32.cb);
3604	else
3605	CPUMSetGuestGDTR(pVCpu, dtr32.uAddr, dtr32.cb);
3606
3607	return VINF_SUCCESS;
3608	}
3609	#endif
3610
3611
3612	#ifdef IN_RC
3613	/**
3614	* STI Emulation.
3615	*
3616	* @remark the instruction following sti is guaranteed to be executed before any interrupts are dispatched
3617	*/
3618	static int emInterpretSti(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3619	{
3620	NOREF(pcbSize);
3621	PPATMGCSTATE pGCState = PATMGetGCState(pVM);
3622
3623	if(!pGCState)
3624	{
3625	Assert(pGCState);
3626	return VERR_EM_INTERPRETER;
3627	}
3628	pGCState->uVMFlags \|= X86_EFL_IF;
3629
3630	Assert(pRegFrame->eflags.u32 & X86_EFL_IF);
3631	Assert(pvFault == SELMToFlat(pVM, DISSELREG_CS, pRegFrame, (RTGCPTR)pRegFrame->rip));
3632
3633	pVCpu->em.s.GCPtrInhibitInterrupts = pRegFrame->eip + pDis->cbInstr;
3634	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
3635
3636	return VINF_SUCCESS;
3637	}
3638	#endif /* IN_RC */
3639
3640
3641	/**
3642	* HLT Emulation.
3643	*/
3644	static VBOXSTRICTRC
3645	emInterpretHlt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3646	{
3647	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3648	return VINF_EM_HALT;
3649	}
3650
3651
3652	/**
3653	* RDTSC Emulation.
3654	*/
3655	static int emInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3656	{
3657	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3658	return EMInterpretRdtsc(pVM, pVCpu, pRegFrame);
3659	}
3660
3661	/**
3662	* RDPMC Emulation
3663	*/
3664	static int emInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3665	{
3666	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3667	return EMInterpretRdpmc(pVM, pVCpu, pRegFrame);
3668	}
3669
3670
3671	static int emInterpretMonitor(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3672	{
3673	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3674	return EMInterpretMonitor(pVM, pVCpu, pRegFrame);
3675	}
3676
3677
3678	static VBOXSTRICTRC emInterpretMWait(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3679	{
3680	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3681	return EMInterpretMWait(pVM, pVCpu, pRegFrame);
3682	}
3683
3684
3685	/**
3686	* RDMSR Emulation.
3687	*/
3688	static int emInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3689	{
3690	/* Note: The Intel manual claims there's a REX version of RDMSR that's slightly
3691	different, so we play safe by completely disassembling the instruction. */
3692	Assert(!(pDis->fPrefix & DISPREFIX_REX));
3693	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3694	return EMInterpretRdmsr(pVM, pVCpu, pRegFrame);
3695	}
3696
3697
3698	/**
3699	* WRMSR Emulation.
3700	*/
3701	static int emInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3702	{
3703	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3704	return EMInterpretWrmsr(pVM, pVCpu, pRegFrame);
3705	}
3706
3707
3708	/**
3709	* Internal worker.
3710	* @copydoc emInterpretInstructionCPUOuter
3711	* @param pVM The cross context VM structure.
3712	*/
3713	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPU(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
3714	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
3715	{
3716	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3717	Assert(enmCodeType == EMCODETYPE_SUPERVISOR \|\| enmCodeType == EMCODETYPE_ALL);
3718	Assert(pcbSize);
3719	*pcbSize = 0;
3720
3721	if (enmCodeType == EMCODETYPE_SUPERVISOR)
3722	{
3723	/*
3724	* Only supervisor guest code!!
3725	* And no complicated prefixes.
3726	*/
3727	/* Get the current privilege level. */
3728	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
3729	#ifdef VBOX_WITH_RAW_RING1
3730	if ( !EMIsRawRing1Enabled(pVM)
3731	\|\| cpl > 1
3732	\|\| pRegFrame->eflags.Bits.u2IOPL > cpl
3733	)
3734	#endif
3735	{
3736	if ( cpl != 0
3737	&& pDis->pCurInstr->uOpcode != OP_RDTSC) /* rdtsc requires emulation in ring 3 as well */
3738	{
3739	Log(("WARNING: refusing instruction emulation for user-mode code!!\n"));
3740	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedUserMode));
3741	return VERR_EM_INTERPRETER;
3742	}
3743	}
3744	}
3745	else
3746	Log2(("emInterpretInstructionCPU allowed to interpret user-level code!!\n"));
3747
3748	#ifdef IN_RC
3749	if ( (pDis->fPrefix & (DISPREFIX_REPNE \| DISPREFIX_REP))
3750	\|\| ( (pDis->fPrefix & DISPREFIX_LOCK)
3751	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG
3752	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG8B
3753	&& pDis->pCurInstr->uOpcode != OP_XADD
3754	&& pDis->pCurInstr->uOpcode != OP_OR
3755	&& pDis->pCurInstr->uOpcode != OP_AND
3756	&& pDis->pCurInstr->uOpcode != OP_XOR
3757	&& pDis->pCurInstr->uOpcode != OP_BTR
3758	)
3759	)
3760	#else
3761	if ( (pDis->fPrefix & DISPREFIX_REPNE)
3762	\|\| ( (pDis->fPrefix & DISPREFIX_REP)
3763	&& pDis->pCurInstr->uOpcode != OP_STOSWD
3764	)
3765	\|\| ( (pDis->fPrefix & DISPREFIX_LOCK)
3766	&& pDis->pCurInstr->uOpcode != OP_OR
3767	&& pDis->pCurInstr->uOpcode != OP_AND
3768	&& pDis->pCurInstr->uOpcode != OP_XOR
3769	&& pDis->pCurInstr->uOpcode != OP_BTR
3770	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG
3771	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG8B
3772	)
3773	)
3774	#endif
3775	{
3776	//Log(("EMInterpretInstruction: wrong prefix!!\n"));
3777	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedPrefix));
3778	Log4(("EM: Refuse %u on REP/REPNE/LOCK prefix grounds\n", pDis->pCurInstr->uOpcode));
3779	return VERR_EM_INTERPRETER;
3780	}
3781
3782	#if HC_ARCH_BITS == 32
3783	/*
3784	* Unable to emulate most >4 bytes accesses in 32 bits mode.
3785	* Whitelisted instructions are safe.
3786	*/
3787	if ( pDis->Param1.cb > 4
3788	&& CPUMIsGuestIn64BitCode(pVCpu))
3789	{
3790	uint32_t uOpCode = pDis->pCurInstr->uOpcode;
3791	if ( uOpCode != OP_STOSWD
3792	&& uOpCode != OP_MOV
3793	&& uOpCode != OP_CMPXCHG8B
3794	&& uOpCode != OP_XCHG
3795	&& uOpCode != OP_BTS
3796	&& uOpCode != OP_BTR
3797	&& uOpCode != OP_BTC
3798	)
3799	{
3800	# ifdef VBOX_WITH_STATISTICS
3801	switch (pDis->pCurInstr->uOpcode)
3802	{
3803	# define INTERPRET_FAILED_CASE(opcode, Instr) \
3804	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); break;
3805	INTERPRET_FAILED_CASE(OP_XCHG,Xchg);
3806	INTERPRET_FAILED_CASE(OP_DEC,Dec);
3807	INTERPRET_FAILED_CASE(OP_INC,Inc);
3808	INTERPRET_FAILED_CASE(OP_POP,Pop);
3809	INTERPRET_FAILED_CASE(OP_OR, Or);
3810	INTERPRET_FAILED_CASE(OP_XOR,Xor);
3811	INTERPRET_FAILED_CASE(OP_AND,And);
3812	INTERPRET_FAILED_CASE(OP_MOV,Mov);
3813	INTERPRET_FAILED_CASE(OP_STOSWD,StosWD);
3814	INTERPRET_FAILED_CASE(OP_INVLPG,InvlPg);
3815	INTERPRET_FAILED_CASE(OP_CPUID,CpuId);
3816	INTERPRET_FAILED_CASE(OP_MOV_CR,MovCRx);
3817	INTERPRET_FAILED_CASE(OP_MOV_DR,MovDRx);
3818	INTERPRET_FAILED_CASE(OP_LLDT,LLdt);
3819	INTERPRET_FAILED_CASE(OP_LIDT,LIdt);
3820	INTERPRET_FAILED_CASE(OP_LGDT,LGdt);
3821	INTERPRET_FAILED_CASE(OP_LMSW,Lmsw);
3822	INTERPRET_FAILED_CASE(OP_CLTS,Clts);
3823	INTERPRET_FAILED_CASE(OP_MONITOR,Monitor);
3824	INTERPRET_FAILED_CASE(OP_MWAIT,MWait);
3825	INTERPRET_FAILED_CASE(OP_RDMSR,Rdmsr);
3826	INTERPRET_FAILED_CASE(OP_WRMSR,Wrmsr);
3827	INTERPRET_FAILED_CASE(OP_ADD,Add);
3828	INTERPRET_FAILED_CASE(OP_SUB,Sub);
3829	INTERPRET_FAILED_CASE(OP_ADC,Adc);
3830	INTERPRET_FAILED_CASE(OP_BTR,Btr);
3831	INTERPRET_FAILED_CASE(OP_BTS,Bts);
3832	INTERPRET_FAILED_CASE(OP_BTC,Btc);
3833	INTERPRET_FAILED_CASE(OP_RDTSC,Rdtsc);
3834	INTERPRET_FAILED_CASE(OP_CMPXCHG, CmpXchg);
3835	INTERPRET_FAILED_CASE(OP_STI, Sti);
3836	INTERPRET_FAILED_CASE(OP_XADD,XAdd);
3837	INTERPRET_FAILED_CASE(OP_CMPXCHG8B,CmpXchg8b);
3838	INTERPRET_FAILED_CASE(OP_HLT, Hlt);
3839	INTERPRET_FAILED_CASE(OP_IRET,Iret);
3840	INTERPRET_FAILED_CASE(OP_WBINVD,WbInvd);
3841	INTERPRET_FAILED_CASE(OP_MOVNTPS,MovNTPS);
3842	# undef INTERPRET_FAILED_CASE
3843	default:
3844	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
3845	break;
3846	}
3847	# endif /* VBOX_WITH_STATISTICS */
3848	Log4(("EM: Refuse %u on grounds of accessing %u bytes\n", pDis->pCurInstr->uOpcode, pDis->Param1.cb));
3849	return VERR_EM_INTERPRETER;
3850	}
3851	}
3852	#endif
3853
3854	VBOXSTRICTRC rc;
3855	#if (defined(VBOX_STRICT) \|\| defined(LOG_ENABLED))
3856	LogFlow(("emInterpretInstructionCPU %s\n", emGetMnemonic(pDis)));
3857	#endif
3858	switch (pDis->pCurInstr->uOpcode)
3859	{
3860	/*
3861	* Macros for generating the right case statements.
3862	*/
3863	# ifndef VBOX_COMPARE_IEM_AND_EM
3864	# define INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3865	case opcode:\
3866	if (pDis->fPrefix & DISPREFIX_LOCK) \
3867	rc = emInterpretLock##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulateLock); \
3868	else \
3869	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3870	if (RT_SUCCESS(rc)) \
3871	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3872	else \
3873	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3874	return rc
3875	# else /* VBOX_COMPARE_IEM_AND_EM */
3876	# define INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3877	case opcode:\
3878	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3879	if (RT_SUCCESS(rc)) \
3880	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3881	else \
3882	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3883	return rc
3884	# endif /* VBOX_COMPARE_IEM_AND_EM */
3885
3886	#define INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate) \
3887	case opcode:\
3888	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3889	if (RT_SUCCESS(rc)) \
3890	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3891	else \
3892	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3893	return rc
3894
3895	#define INTERPRET_CASE_EX_PARAM2(opcode, Instr, InstrFn, pfnEmulate) \
3896	INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate)
3897	#define INTERPRET_CASE_EX_LOCK_PARAM2(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3898	INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock)
3899
3900	#define INTERPRET_CASE(opcode, Instr) \
3901	case opcode:\
3902	rc = emInterpret##Instr(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
3903	if (RT_SUCCESS(rc)) \
3904	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3905	else \
3906	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3907	return rc
3908
3909	#define INTERPRET_CASE_EX_DUAL_PARAM2(opcode, Instr, InstrFn) \
3910	case opcode:\
3911	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
3912	if (RT_SUCCESS(rc)) \
3913	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3914	else \
3915	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3916	return rc
3917
3918	#define INTERPRET_STAT_CASE(opcode, Instr) \
3919	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); return VERR_EM_INTERPRETER;
3920
3921	/*
3922	* The actual case statements.
3923	*/
3924	INTERPRET_CASE(OP_XCHG,Xchg);
3925	INTERPRET_CASE_EX_PARAM2(OP_DEC,Dec, IncDec, EMEmulateDec);
3926	INTERPRET_CASE_EX_PARAM2(OP_INC,Inc, IncDec, EMEmulateInc);
3927	INTERPRET_CASE(OP_POP,Pop);
3928	INTERPRET_CASE_EX_LOCK_PARAM3(OP_OR, Or, OrXorAnd, EMEmulateOr, EMEmulateLockOr);
3929	INTERPRET_CASE_EX_LOCK_PARAM3(OP_XOR,Xor, OrXorAnd, EMEmulateXor, EMEmulateLockXor);
3930	INTERPRET_CASE_EX_LOCK_PARAM3(OP_AND,And, OrXorAnd, EMEmulateAnd, EMEmulateLockAnd);
3931	INTERPRET_CASE(OP_MOV,Mov);
3932	#ifndef IN_RC
3933	INTERPRET_CASE(OP_STOSWD,StosWD);
3934	#endif
3935	INTERPRET_CASE(OP_INVLPG,InvlPg);
3936	INTERPRET_CASE(OP_CPUID,CpuId);
3937	INTERPRET_CASE(OP_MOV_CR,MovCRx);
3938	INTERPRET_CASE(OP_MOV_DR,MovDRx);
3939	#ifdef IN_RING0
3940	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LIDT, LIdt, LIGdt);
3941	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LGDT, LGdt, LIGdt);
3942	#endif
3943	INTERPRET_CASE(OP_LLDT,LLdt);
3944	INTERPRET_CASE(OP_LMSW,Lmsw);
3945	#ifdef EM_EMULATE_SMSW
3946	INTERPRET_CASE(OP_SMSW,Smsw);
3947	#endif
3948	INTERPRET_CASE(OP_CLTS,Clts);
3949	INTERPRET_CASE(OP_MONITOR, Monitor);
3950	INTERPRET_CASE(OP_MWAIT, MWait);
3951	INTERPRET_CASE(OP_RDMSR, Rdmsr);
3952	INTERPRET_CASE(OP_WRMSR, Wrmsr);
3953	INTERPRET_CASE_EX_PARAM3(OP_ADD,Add, AddSub, EMEmulateAdd);
3954	INTERPRET_CASE_EX_PARAM3(OP_SUB,Sub, AddSub, EMEmulateSub);
3955	INTERPRET_CASE(OP_ADC,Adc);
3956	INTERPRET_CASE_EX_LOCK_PARAM2(OP_BTR,Btr, BitTest, EMEmulateBtr, EMEmulateLockBtr);
3957	INTERPRET_CASE_EX_PARAM2(OP_BTS,Bts, BitTest, EMEmulateBts);
3958	INTERPRET_CASE_EX_PARAM2(OP_BTC,Btc, BitTest, EMEmulateBtc);
3959	INTERPRET_CASE(OP_RDPMC,Rdpmc);
3960	INTERPRET_CASE(OP_RDTSC,Rdtsc);
3961	INTERPRET_CASE(OP_CMPXCHG, CmpXchg);
3962	#ifdef IN_RC
3963	INTERPRET_CASE(OP_STI,Sti);
3964	INTERPRET_CASE(OP_XADD, XAdd);
3965	INTERPRET_CASE(OP_IRET,Iret);
3966	#endif
3967	INTERPRET_CASE(OP_CMPXCHG8B, CmpXchg8b);
3968	INTERPRET_CASE(OP_HLT,Hlt);
3969	INTERPRET_CASE(OP_WBINVD,WbInvd);
3970	#ifdef VBOX_WITH_STATISTICS
3971	# ifndef IN_RC
3972	INTERPRET_STAT_CASE(OP_XADD, XAdd);
3973	# endif
3974	INTERPRET_STAT_CASE(OP_MOVNTPS,MovNTPS);
3975	#endif
3976
3977	default:
3978	Log3(("emInterpretInstructionCPU: opcode=%d\n", pDis->pCurInstr->uOpcode));
3979	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
3980	return VERR_EM_INTERPRETER;
3981
3982	#undef INTERPRET_CASE_EX_PARAM2
3983	#undef INTERPRET_STAT_CASE
3984	#undef INTERPRET_CASE_EX
3985	#undef INTERPRET_CASE
3986	} /* switch (opcode) */
3987	/* not reached */
3988	}
3989
3990	/**
3991	* Interprets the current instruction using the supplied DISCPUSTATE structure.
3992	*
3993	* EIP is NOT updated!
3994	*
3995	* @returns VBox strict status code.
3996	* @retval VINF_* Scheduling instructions. When these are returned, it
3997	* starts to get a bit tricky to know whether code was
3998	* executed or not... We'll address this when it becomes a problem.
3999	* @retval VERR_EM_INTERPRETER Something we can't cope with.
4000	* @retval VERR_* Fatal errors.
4001	*
4002	* @param pVCpu The cross context virtual CPU structure.
4003	* @param pDis The disassembler cpu state for the instruction to be
4004	* interpreted.
4005	* @param pRegFrame The register frame. EIP is NOT changed!
4006	* @param pvFault The fault address (CR2).
4007	* @param pcbSize Size of the write (if applicable).
4008	* @param enmCodeType Code type (user/supervisor)
4009	*
4010	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
4011	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
4012	* to worry about e.g. invalid modrm combinations (!)
4013	*
4014	* @todo At this time we do NOT check if the instruction overwrites vital information.
4015	* Make sure this can't happen!! (will add some assertions/checks later)
4016	*/
4017	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPUOuter(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
4018	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
4019	{
4020	STAM_PROFILE_START(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
4021	VBOXSTRICTRC rc = emInterpretInstructionCPU(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, pRegFrame, pvFault, enmCodeType, pcbSize);
4022	STAM_PROFILE_STOP(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
4023	if (RT_SUCCESS(rc))
4024	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretSucceeded));
4025	else
4026	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretFailed));
4027	return rc;
4028	}
4029
4030
4031	#endif /* !VBOX_WITH_IEM */

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source: vbox/trunk/src/VBox/VMM/VMMAll/EMAll.cpp@ 66891

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