EMAll.cpp@ 61683

Last change on this file since 61683 was 60915, checked in by vboxsync, 9 years ago
EMAll.cpp: An another warning.
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1	/* $Id: EMAll.cpp 60915 2016-05-10 06:51:24Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor(/Manager) - All contexts
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 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 "internal/pgm.h"
47	#include <iprt/assert.h>
48	#include <iprt/asm.h>
49	#include <iprt/string.h>
50
51	#ifdef VBOX_WITH_IEM
52	//# define VBOX_COMPARE_IEM_AND_EM /* debugging... */
53	//# define VBOX_SAME_AS_EM
54	//# define VBOX_COMPARE_IEM_LAST
55	#endif
56
57	#ifdef VBOX_WITH_RAW_RING1
58	# define EM_EMULATE_SMSW
59	#endif
60
61
62	/*********************************************************************************************************************************
63	* Defined Constants And Macros *
64	*********************************************************************************************************************************/
65	/** @def EM_ASSERT_FAULT_RETURN
66	* Safety check.
67	*
68	* Could in theory misfire on a cross page boundary access...
69	*
70	* Currently disabled because the CSAM (+ PATM) patch monitoring occasionally
71	* turns up an alias page instead of the original faulting one and annoying the
72	* heck out of anyone running a debug build. See @bugref{2609} and @bugref{1931}.
73	*/
74	#if 0
75	# define EM_ASSERT_FAULT_RETURN(expr, rc) AssertReturn(expr, rc)
76	#else
77	# define EM_ASSERT_FAULT_RETURN(expr, rc) do { } while (0)
78	#endif
79
80
81	/*********************************************************************************************************************************
82	* Internal Functions *
83	*********************************************************************************************************************************/
84	#if !defined(VBOX_WITH_IEM) \|\| defined(VBOX_COMPARE_IEM_AND_EM)
85	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPUOuter(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
86	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize);
87	#endif
88
89
90	/*********************************************************************************************************************************
91	* Global Variables *
92	*********************************************************************************************************************************/
93	#ifdef VBOX_COMPARE_IEM_AND_EM
94	static const uint32_t g_fInterestingFFs = VMCPU_FF_TO_R3
95	\| VMCPU_FF_CSAM_PENDING_ACTION \| VMCPU_FF_CSAM_SCAN_PAGE \| VMCPU_FF_INHIBIT_INTERRUPTS
96	\| VMCPU_FF_SELM_SYNC_LDT \| VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_TSS \| VMCPU_FF_TRPM_SYNC_IDT
97	\| VMCPU_FF_TLB_FLUSH \| VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL;
98	static uint32_t g_fIncomingFFs;
99	static CPUMCTX g_IncomingCtx;
100	static bool g_fIgnoreRaxRdx = false;
101
102	static uint32_t g_fEmFFs;
103	static CPUMCTX g_EmCtx;
104	static uint8_t g_abEmWrote[256];
105	static size_t g_cbEmWrote;
106
107	static uint32_t g_fIemFFs;
108	static CPUMCTX g_IemCtx;
109	extern uint8_t g_abIemWrote[256];
110	#if defined(VBOX_COMPARE_IEM_FIRST) \|\| defined(VBOX_COMPARE_IEM_LAST)
111	extern size_t g_cbIemWrote;
112	#else
113	static size_t g_cbIemWrote;
114	#endif
115	#endif
116
117
118	/**
119	* Get the current execution manager status.
120	*
121	* @returns Current status.
122	* @param pVCpu The cross context virtual CPU structure.
123	*/
124	VMM_INT_DECL(EMSTATE) EMGetState(PVMCPU pVCpu)
125	{
126	return pVCpu->em.s.enmState;
127	}
128
129
130	/**
131	* Sets the current execution manager status. (use only when you know what you're doing!)
132	*
133	* @param pVCpu The cross context virtual CPU structure.
134	* @param enmNewState The new state, EMSTATE_WAIT_SIPI or EMSTATE_HALTED.
135	*/
136	VMM_INT_DECL(void) EMSetState(PVMCPU pVCpu, EMSTATE enmNewState)
137	{
138	/* Only allowed combination: */
139	Assert(pVCpu->em.s.enmState == EMSTATE_WAIT_SIPI && enmNewState == EMSTATE_HALTED);
140	pVCpu->em.s.enmState = enmNewState;
141	}
142
143
144	/**
145	* Sets the PC for which interrupts should be inhibited.
146	*
147	* @param pVCpu The cross context virtual CPU structure.
148	* @param PC The PC.
149	*/
150	VMMDECL(void) EMSetInhibitInterruptsPC(PVMCPU pVCpu, RTGCUINTPTR PC)
151	{
152	pVCpu->em.s.GCPtrInhibitInterrupts = PC;
153	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
154	}
155
156
157	/**
158	* Gets the PC for which interrupts should be inhibited.
159	*
160	* There are a few instructions which inhibits or delays interrupts
161	* for the instruction following them. These instructions are:
162	* - STI
163	* - MOV SS, r/m16
164	* - POP SS
165	*
166	* @returns The PC for which interrupts should be inhibited.
167	* @param pVCpu The cross context virtual CPU structure.
168	*
169	*/
170	VMMDECL(RTGCUINTPTR) EMGetInhibitInterruptsPC(PVMCPU pVCpu)
171	{
172	return pVCpu->em.s.GCPtrInhibitInterrupts;
173	}
174
175
176	/**
177	* Prepare an MWAIT - essentials of the MONITOR instruction.
178	*
179	* @returns VINF_SUCCESS
180	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
181	* @param rax The content of RAX.
182	* @param rcx The content of RCX.
183	* @param rdx The content of RDX.
184	* @param GCPhys The physical address corresponding to rax.
185	*/
186	VMM_INT_DECL(int) EMMonitorWaitPrepare(PVMCPU pVCpu, uint64_t rax, uint64_t rcx, uint64_t rdx, RTGCPHYS GCPhys)
187	{
188	pVCpu->em.s.MWait.uMonitorRAX = rax;
189	pVCpu->em.s.MWait.uMonitorRCX = rcx;
190	pVCpu->em.s.MWait.uMonitorRDX = rdx;
191	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_MONITOR_ACTIVE;
192	/** @todo Make use of GCPhys. */
193	NOREF(GCPhys);
194	/** @todo Complete MONITOR implementation. */
195	return VINF_SUCCESS;
196	}
197
198
199	/**
200	* Performs an MWAIT.
201	*
202	* @returns VINF_SUCCESS
203	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
204	* @param rax The content of RAX.
205	* @param rcx The content of RCX.
206	*/
207	VMM_INT_DECL(int) EMMonitorWaitPerform(PVMCPU pVCpu, uint64_t rax, uint64_t rcx)
208	{
209	pVCpu->em.s.MWait.uMWaitRAX = rax;
210	pVCpu->em.s.MWait.uMWaitRCX = rcx;
211	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_ACTIVE;
212	if (rcx)
213	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_BREAKIRQIF0;
214	else
215	pVCpu->em.s.MWait.fWait &= ~EMMWAIT_FLAG_BREAKIRQIF0;
216	/** @todo not completely correct?? */
217	return VINF_EM_HALT;
218	}
219
220
221
222	/**
223	* Determine if we should continue execution in HM after encountering an mwait
224	* instruction.
225	*
226	* Clears MWAIT flags if returning @c true.
227	*
228	* @returns true if we should continue, false if we should halt.
229	* @param pVCpu The cross context virtual CPU structure.
230	* @param pCtx Current CPU context.
231	*/
232	VMM_INT_DECL(bool) EMMonitorWaitShouldContinue(PVMCPU pVCpu, PCPUMCTX pCtx)
233	{
234	if ( pCtx->eflags.Bits.u1IF
235	\|\| ( (pVCpu->em.s.MWait.fWait & (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0))
236	== (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0)) )
237	{
238	if (VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_UPDATE_APIC \| VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)))
239	{
240	pVCpu->em.s.MWait.fWait &= ~(EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0);
241	return true;
242	}
243	}
244
245	return false;
246	}
247
248
249	/**
250	* Determine if we should continue execution in HM after encountering a hlt
251	* instruction.
252	*
253	* @returns true if we should continue, false if we should halt.
254	* @param pVCpu The cross context virtual CPU structure.
255	* @param pCtx Current CPU context.
256	*/
257	VMM_INT_DECL(bool) EMShouldContinueAfterHalt(PVMCPU pVCpu, PCPUMCTX pCtx)
258	{
259	if (pCtx->eflags.Bits.u1IF)
260	return !!VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_UPDATE_APIC \| VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC));
261	return false;
262	}
263
264
265	/**
266	* Locks REM execution to a single VCPU.
267	*
268	* @param pVM The cross context VM structure.
269	*/
270	VMMDECL(void) EMRemLock(PVM pVM)
271	{
272	#ifdef VBOX_WITH_REM
273	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
274	return; /* early init */
275
276	Assert(!PGMIsLockOwner(pVM));
277	Assert(!IOMIsLockWriteOwner(pVM));
278	int rc = PDMCritSectEnter(&pVM->em.s.CritSectREM, VERR_SEM_BUSY);
279	AssertRCSuccess(rc);
280	#endif
281	}
282
283
284	/**
285	* Unlocks REM execution
286	*
287	* @param pVM The cross context VM structure.
288	*/
289	VMMDECL(void) EMRemUnlock(PVM pVM)
290	{
291	#ifdef VBOX_WITH_REM
292	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
293	return; /* early init */
294
295	PDMCritSectLeave(&pVM->em.s.CritSectREM);
296	#endif
297	}
298
299
300	/**
301	* Check if this VCPU currently owns the REM lock.
302	*
303	* @returns bool owner/not owner
304	* @param pVM The cross context VM structure.
305	*/
306	VMMDECL(bool) EMRemIsLockOwner(PVM pVM)
307	{
308	#ifdef VBOX_WITH_REM
309	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
310	return true; /* early init */
311
312	return PDMCritSectIsOwner(&pVM->em.s.CritSectREM);
313	#else
314	return true;
315	#endif
316	}
317
318
319	/**
320	* Try to acquire the REM lock.
321	*
322	* @returns VBox status code
323	* @param pVM The cross context VM structure.
324	*/
325	VMM_INT_DECL(int) EMRemTryLock(PVM pVM)
326	{
327	#ifdef VBOX_WITH_REM
328	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
329	return VINF_SUCCESS; /* early init */
330
331	return PDMCritSectTryEnter(&pVM->em.s.CritSectREM);
332	#else
333	return VINF_SUCCESS;
334	#endif
335	}
336
337
338	/**
339	* @callback_method_impl{FNDISREADBYTES}
340	*/
341	static DECLCALLBACK(int) emReadBytes(PDISCPUSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
342	{
343	PVMCPU pVCpu = (PVMCPU)pDis->pvUser;
344	#if defined(IN_RC) \|\| defined(IN_RING3)
345	PVM pVM = pVCpu->CTX_SUFF(pVM);
346	#endif
347	RTUINTPTR uSrcAddr = pDis->uInstrAddr + offInstr;
348	int rc;
349
350	/*
351	* Figure how much we can or must read.
352	*/
353	size_t cbToRead = PAGE_SIZE - (uSrcAddr & PAGE_OFFSET_MASK);
354	if (cbToRead > cbMaxRead)
355	cbToRead = cbMaxRead;
356	else if (cbToRead < cbMinRead)
357	cbToRead = cbMinRead;
358
359	#if defined(VBOX_WITH_RAW_MODE) && (defined(IN_RC) \|\| defined(IN_RING3))
360	/*
361	* We might be called upon to interpret an instruction in a patch.
362	*/
363	if (PATMIsPatchGCAddr(pVCpu->CTX_SUFF(pVM), uSrcAddr))
364	{
365	# ifdef IN_RC
366	memcpy(&pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
367	# else
368	memcpy(&pDis->abInstr[offInstr], PATMR3GCPtrToHCPtr(pVCpu->CTX_SUFF(pVM), uSrcAddr), cbToRead);
369	# endif
370	rc = VINF_SUCCESS;
371	}
372	else
373	#endif
374	{
375	# ifdef IN_RC
376	/*
377	* Try access it thru the shadow page tables first. Fall back on the
378	* slower PGM method if it fails because the TLB or page table was
379	* modified recently.
380	*/
381	rc = MMGCRamRead(pVCpu->pVMRC, &pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
382	if (rc == VERR_ACCESS_DENIED && cbToRead > cbMinRead)
383	{
384	cbToRead = cbMinRead;
385	rc = MMGCRamRead(pVCpu->pVMRC, &pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
386	}
387	if (rc == VERR_ACCESS_DENIED)
388	#endif
389	{
390	rc = PGMPhysSimpleReadGCPtr(pVCpu, &pDis->abInstr[offInstr], uSrcAddr, cbToRead);
391	if (RT_FAILURE(rc))
392	{
393	if (cbToRead > cbMinRead)
394	{
395	cbToRead = cbMinRead;
396	rc = PGMPhysSimpleReadGCPtr(pVCpu, &pDis->abInstr[offInstr], uSrcAddr, cbToRead);
397	}
398	if (RT_FAILURE(rc))
399	{
400	#ifndef IN_RC
401	/*
402	* If we fail to find the page via the guest's page tables
403	* we invalidate the page in the host TLB (pertaining to
404	* the guest in the NestedPaging case). See @bugref{6043}.
405	*/
406	if (rc == VERR_PAGE_TABLE_NOT_PRESENT \|\| rc == VERR_PAGE_NOT_PRESENT)
407	{
408	HMInvalidatePage(pVCpu, uSrcAddr);
409	if (((uSrcAddr + cbToRead - 1) >> PAGE_SHIFT) != (uSrcAddr >> PAGE_SHIFT))
410	HMInvalidatePage(pVCpu, uSrcAddr + cbToRead - 1);
411	}
412	#endif
413	}
414	}
415	}
416	}
417
418	pDis->cbCachedInstr = offInstr + (uint8_t)cbToRead;
419	return rc;
420	}
421
422
423	DECLINLINE(int) emDisCoreOne(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, RTGCUINTPTR InstrGC, uint32_t *pOpsize)
424	{
425	NOREF(pVM);
426	return DISInstrWithReader(InstrGC, (DISCPUMODE)pDis->uCpuMode, emReadBytes, pVCpu, pDis, pOpsize);
427	}
428
429
430	/**
431	* Disassembles the current instruction.
432	*
433	* @returns VBox status code, see SELMToFlatEx and EMInterpretDisasOneEx for
434	* details.
435	*
436	* @param pVM The cross context VM structure.
437	* @param pVCpu The cross context virtual CPU structure.
438	* @param pDis Where to return the parsed instruction info.
439	* @param pcbInstr Where to return the instruction size. (optional)
440	*/
441	VMM_INT_DECL(int) EMInterpretDisasCurrent(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, unsigned *pcbInstr)
442	{
443	PCPUMCTXCORE pCtxCore = CPUMCTX2CORE(CPUMQueryGuestCtxPtr(pVCpu));
444	RTGCPTR GCPtrInstr;
445	#if 0
446	int rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pCtxCore, pCtxCore->rip, 0, &GCPtrInstr);
447	#else
448	/** @todo Get the CPU mode as well while we're at it! */
449	int rc = SELMValidateAndConvertCSAddr(pVCpu, pCtxCore->eflags, pCtxCore->ss.Sel, pCtxCore->cs.Sel, &pCtxCore->cs,
450	pCtxCore->rip, &GCPtrInstr);
451	#endif
452	if (RT_FAILURE(rc))
453	{
454	Log(("EMInterpretDisasOne: Failed to convert %RTsel:%RGv (cpl=%d) - rc=%Rrc !!\n",
455	pCtxCore->cs.Sel, (RTGCPTR)pCtxCore->rip, pCtxCore->ss.Sel & X86_SEL_RPL, rc));
456	return rc;
457	}
458	return EMInterpretDisasOneEx(pVM, pVCpu, (RTGCUINTPTR)GCPtrInstr, pCtxCore, pDis, pcbInstr);
459	}
460
461
462	/**
463	* Disassembles one instruction.
464	*
465	* This is used by internally by the interpreter and by trap/access handlers.
466	*
467	* @returns VBox status code.
468	*
469	* @param pVM The cross context VM structure.
470	* @param pVCpu The cross context virtual CPU structure.
471	* @param GCPtrInstr The flat address of the instruction.
472	* @param pCtxCore The context core (used to determine the cpu mode).
473	* @param pDis Where to return the parsed instruction info.
474	* @param pcbInstr Where to return the instruction size. (optional)
475	*/
476	VMM_INT_DECL(int) EMInterpretDisasOneEx(PVM pVM, PVMCPU pVCpu, RTGCUINTPTR GCPtrInstr, PCCPUMCTXCORE pCtxCore,
477	PDISCPUSTATE pDis, unsigned *pcbInstr)
478	{
479	NOREF(pVM);
480	Assert(pCtxCore == CPUMGetGuestCtxCore(pVCpu)); NOREF(pCtxCore);
481	DISCPUMODE enmCpuMode = CPUMGetGuestDisMode(pVCpu);
482	/** @todo Deal with too long instruction (=> \#GP), opcode read errors (=>
483	* \#PF, \#GP, \#??), undefined opcodes (=> \#UD), and such. */
484	int rc = DISInstrWithReader(GCPtrInstr, enmCpuMode, emReadBytes, pVCpu, pDis, pcbInstr);
485	if (RT_SUCCESS(rc))
486	return VINF_SUCCESS;
487	AssertMsg(rc == VERR_PAGE_NOT_PRESENT \|\| rc == VERR_PAGE_TABLE_NOT_PRESENT, ("DISCoreOne failed to GCPtrInstr=%RGv rc=%Rrc\n", GCPtrInstr, rc));
488	return rc;
489	}
490
491
492	#if defined(VBOX_COMPARE_IEM_FIRST) \|\| defined(VBOX_COMPARE_IEM_LAST)
493	static void emCompareWithIem(PVMCPU pVCpu, PCCPUMCTX pEmCtx, PCCPUMCTX pIemCtx,
494	VBOXSTRICTRC rcEm, VBOXSTRICTRC rcIem,
495	uint32_t cbEm, uint32_t cbIem)
496	{
497	/* Quick compare. */
498	if ( rcEm == rcIem
499	&& cbEm == cbIem
500	&& g_cbEmWrote == g_cbIemWrote
501	&& memcmp(g_abIemWrote, g_abEmWrote, g_cbIemWrote) == 0
502	&& memcmp(pIemCtx, pEmCtx, sizeof(*pIemCtx)) == 0
503	&& (g_fEmFFs & g_fInterestingFFs) == (g_fIemFFs & g_fInterestingFFs)
504	)
505	return;
506
507	/* Report exact differences. */
508	RTLogPrintf("! EM and IEM differs at %04x:%08RGv !\n", g_IncomingCtx.cs.Sel, g_IncomingCtx.rip);
509	if (rcEm != rcIem)
510	RTLogPrintf(" * rcIem=%Rrc rcEm=%Rrc\n", VBOXSTRICTRC_VAL(rcIem), VBOXSTRICTRC_VAL(rcEm));
511	else if (cbEm != cbIem)
512	RTLogPrintf(" * cbIem=%#x cbEm=%#x\n", cbIem, cbEm);
513
514	if (RT_SUCCESS(rcEm) && RT_SUCCESS(rcIem))
515	{
516	if (g_cbIemWrote != g_cbEmWrote)
517	RTLogPrintf("!! g_cbIemWrote=%#x g_cbEmWrote=%#x\n", g_cbIemWrote, g_cbEmWrote);
518	else if (memcmp(g_abIemWrote, g_abEmWrote, g_cbIemWrote))
519	{
520	RTLogPrintf("!! IemWrote %.*Rhxs\n", RT_MIN(RT_MAX(1, g_cbIemWrote), 64), g_abIemWrote);
521	RTLogPrintf("!! EemWrote %.*Rhxs\n", RT_MIN(RT_MAX(1, g_cbIemWrote), 64), g_abIemWrote);
522	}
523
524	if ((g_fEmFFs & g_fInterestingFFs) != (g_fIemFFs & g_fInterestingFFs))
525	RTLogPrintf("!! g_fIemFFs=%#x g_fEmFFs=%#x (diff=%#x)\n", g_fIemFFs & g_fInterestingFFs,
526	g_fEmFFs & g_fInterestingFFs, (g_fIemFFs ^ g_fEmFFs) & g_fInterestingFFs);
527
528	# define CHECK_FIELD(a_Field) \
529	do \
530	{ \
531	if (pEmCtx->a_Field != pIemCtx->a_Field) \
532	{ \
533	switch (sizeof(pEmCtx->a_Field)) \
534	{ \
535	case 1: RTLogPrintf("!! %8s differs - iem=%02x - em=%02x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
536	case 2: RTLogPrintf("!! %8s differs - iem=%04x - em=%04x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
537	case 4: RTLogPrintf("!! %8s differs - iem=%08x - em=%08x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
538	case 8: RTLogPrintf("!! %8s differs - iem=%016llx - em=%016llx\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
539	default: RTLogPrintf("!! %8s differs\n", #a_Field); break; \
540	} \
541	cDiffs++; \
542	} \
543	} while (0)
544
545	# define CHECK_BIT_FIELD(a_Field) \
546	do \
547	{ \
548	if (pEmCtx->a_Field != pIemCtx->a_Field) \
549	{ \
550	RTLogPrintf("!! %8s differs - iem=%02x - em=%02x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); \
551	cDiffs++; \
552	} \
553	} while (0)
554
555	# define CHECK_SEL(a_Sel) \
556	do \
557	{ \
558	CHECK_FIELD(a_Sel.Sel); \
559	CHECK_FIELD(a_Sel.Attr.u); \
560	CHECK_FIELD(a_Sel.u64Base); \
561	CHECK_FIELD(a_Sel.u32Limit); \
562	CHECK_FIELD(a_Sel.fFlags); \
563	} while (0)
564
565	unsigned cDiffs = 0;
566	if (memcmp(&pEmCtx->fpu, &pIemCtx->fpu, sizeof(pIemCtx->fpu)))
567	{
568	RTLogPrintf(" the FPU state differs\n");
569	cDiffs++;
570	CHECK_FIELD(fpu.FCW);
571	CHECK_FIELD(fpu.FSW);
572	CHECK_FIELD(fpu.FTW);
573	CHECK_FIELD(fpu.FOP);
574	CHECK_FIELD(fpu.FPUIP);
575	CHECK_FIELD(fpu.CS);
576	CHECK_FIELD(fpu.Rsrvd1);
577	CHECK_FIELD(fpu.FPUDP);
578	CHECK_FIELD(fpu.DS);
579	CHECK_FIELD(fpu.Rsrvd2);
580	CHECK_FIELD(fpu.MXCSR);
581	CHECK_FIELD(fpu.MXCSR_MASK);
582	CHECK_FIELD(fpu.aRegs[0].au64[0]); CHECK_FIELD(fpu.aRegs[0].au64[1]);
583	CHECK_FIELD(fpu.aRegs[1].au64[0]); CHECK_FIELD(fpu.aRegs[1].au64[1]);
584	CHECK_FIELD(fpu.aRegs[2].au64[0]); CHECK_FIELD(fpu.aRegs[2].au64[1]);
585	CHECK_FIELD(fpu.aRegs[3].au64[0]); CHECK_FIELD(fpu.aRegs[3].au64[1]);
586	CHECK_FIELD(fpu.aRegs[4].au64[0]); CHECK_FIELD(fpu.aRegs[4].au64[1]);
587	CHECK_FIELD(fpu.aRegs[5].au64[0]); CHECK_FIELD(fpu.aRegs[5].au64[1]);
588	CHECK_FIELD(fpu.aRegs[6].au64[0]); CHECK_FIELD(fpu.aRegs[6].au64[1]);
589	CHECK_FIELD(fpu.aRegs[7].au64[0]); CHECK_FIELD(fpu.aRegs[7].au64[1]);
590	CHECK_FIELD(fpu.aXMM[ 0].au64[0]); CHECK_FIELD(fpu.aXMM[ 0].au64[1]);
591	CHECK_FIELD(fpu.aXMM[ 1].au64[0]); CHECK_FIELD(fpu.aXMM[ 1].au64[1]);
592	CHECK_FIELD(fpu.aXMM[ 2].au64[0]); CHECK_FIELD(fpu.aXMM[ 2].au64[1]);
593	CHECK_FIELD(fpu.aXMM[ 3].au64[0]); CHECK_FIELD(fpu.aXMM[ 3].au64[1]);
594	CHECK_FIELD(fpu.aXMM[ 4].au64[0]); CHECK_FIELD(fpu.aXMM[ 4].au64[1]);
595	CHECK_FIELD(fpu.aXMM[ 5].au64[0]); CHECK_FIELD(fpu.aXMM[ 5].au64[1]);
596	CHECK_FIELD(fpu.aXMM[ 6].au64[0]); CHECK_FIELD(fpu.aXMM[ 6].au64[1]);
597	CHECK_FIELD(fpu.aXMM[ 7].au64[0]); CHECK_FIELD(fpu.aXMM[ 7].au64[1]);
598	CHECK_FIELD(fpu.aXMM[ 8].au64[0]); CHECK_FIELD(fpu.aXMM[ 8].au64[1]);
599	CHECK_FIELD(fpu.aXMM[ 9].au64[0]); CHECK_FIELD(fpu.aXMM[ 9].au64[1]);
600	CHECK_FIELD(fpu.aXMM[10].au64[0]); CHECK_FIELD(fpu.aXMM[10].au64[1]);
601	CHECK_FIELD(fpu.aXMM[11].au64[0]); CHECK_FIELD(fpu.aXMM[11].au64[1]);
602	CHECK_FIELD(fpu.aXMM[12].au64[0]); CHECK_FIELD(fpu.aXMM[12].au64[1]);
603	CHECK_FIELD(fpu.aXMM[13].au64[0]); CHECK_FIELD(fpu.aXMM[13].au64[1]);
604	CHECK_FIELD(fpu.aXMM[14].au64[0]); CHECK_FIELD(fpu.aXMM[14].au64[1]);
605	CHECK_FIELD(fpu.aXMM[15].au64[0]); CHECK_FIELD(fpu.aXMM[15].au64[1]);
606	for (unsigned i = 0; i < RT_ELEMENTS(pEmCtx->fpu.au32RsrvdRest); i++)
607	CHECK_FIELD(fpu.au32RsrvdRest[i]);
608	}
609	CHECK_FIELD(rip);
610	if (pEmCtx->rflags.u != pIemCtx->rflags.u)
611	{
612	RTLogPrintf("!! rflags differs - iem=%08llx em=%08llx\n", pIemCtx->rflags.u, pEmCtx->rflags.u);
613	CHECK_BIT_FIELD(rflags.Bits.u1CF);
614	CHECK_BIT_FIELD(rflags.Bits.u1Reserved0);
615	CHECK_BIT_FIELD(rflags.Bits.u1PF);
616	CHECK_BIT_FIELD(rflags.Bits.u1Reserved1);
617	CHECK_BIT_FIELD(rflags.Bits.u1AF);
618	CHECK_BIT_FIELD(rflags.Bits.u1Reserved2);
619	CHECK_BIT_FIELD(rflags.Bits.u1ZF);
620	CHECK_BIT_FIELD(rflags.Bits.u1SF);
621	CHECK_BIT_FIELD(rflags.Bits.u1TF);
622	CHECK_BIT_FIELD(rflags.Bits.u1IF);
623	CHECK_BIT_FIELD(rflags.Bits.u1DF);
624	CHECK_BIT_FIELD(rflags.Bits.u1OF);
625	CHECK_BIT_FIELD(rflags.Bits.u2IOPL);
626	CHECK_BIT_FIELD(rflags.Bits.u1NT);
627	CHECK_BIT_FIELD(rflags.Bits.u1Reserved3);
628	CHECK_BIT_FIELD(rflags.Bits.u1RF);
629	CHECK_BIT_FIELD(rflags.Bits.u1VM);
630	CHECK_BIT_FIELD(rflags.Bits.u1AC);
631	CHECK_BIT_FIELD(rflags.Bits.u1VIF);
632	CHECK_BIT_FIELD(rflags.Bits.u1VIP);
633	CHECK_BIT_FIELD(rflags.Bits.u1ID);
634	}
635
636	if (!g_fIgnoreRaxRdx)
637	CHECK_FIELD(rax);
638	CHECK_FIELD(rcx);
639	if (!g_fIgnoreRaxRdx)
640	CHECK_FIELD(rdx);
641	CHECK_FIELD(rbx);
642	CHECK_FIELD(rsp);
643	CHECK_FIELD(rbp);
644	CHECK_FIELD(rsi);
645	CHECK_FIELD(rdi);
646	CHECK_FIELD(r8);
647	CHECK_FIELD(r9);
648	CHECK_FIELD(r10);
649	CHECK_FIELD(r11);
650	CHECK_FIELD(r12);
651	CHECK_FIELD(r13);
652	CHECK_SEL(cs);
653	CHECK_SEL(ss);
654	CHECK_SEL(ds);
655	CHECK_SEL(es);
656	CHECK_SEL(fs);
657	CHECK_SEL(gs);
658	CHECK_FIELD(cr0);
659	CHECK_FIELD(cr2);
660	CHECK_FIELD(cr3);
661	CHECK_FIELD(cr4);
662	CHECK_FIELD(dr[0]);
663	CHECK_FIELD(dr[1]);
664	CHECK_FIELD(dr[2]);
665	CHECK_FIELD(dr[3]);
666	CHECK_FIELD(dr[6]);
667	CHECK_FIELD(dr[7]);
668	CHECK_FIELD(gdtr.cbGdt);
669	CHECK_FIELD(gdtr.pGdt);
670	CHECK_FIELD(idtr.cbIdt);
671	CHECK_FIELD(idtr.pIdt);
672	CHECK_SEL(ldtr);
673	CHECK_SEL(tr);
674	CHECK_FIELD(SysEnter.cs);
675	CHECK_FIELD(SysEnter.eip);
676	CHECK_FIELD(SysEnter.esp);
677	CHECK_FIELD(msrEFER);
678	CHECK_FIELD(msrSTAR);
679	CHECK_FIELD(msrPAT);
680	CHECK_FIELD(msrLSTAR);
681	CHECK_FIELD(msrCSTAR);
682	CHECK_FIELD(msrSFMASK);
683	CHECK_FIELD(msrKERNELGSBASE);
684
685	# undef CHECK_FIELD
686	# undef CHECK_BIT_FIELD
687	}
688	}
689	#endif /* VBOX_COMPARE_IEM_AND_EM */
690
691
692	/**
693	* Interprets the current instruction.
694	*
695	* @returns VBox status code.
696	* @retval VINF_* Scheduling instructions.
697	* @retval VERR_EM_INTERPRETER Something we can't cope with.
698	* @retval VERR_* Fatal errors.
699	*
700	* @param pVCpu The cross context virtual CPU structure.
701	* @param pRegFrame The register frame.
702	* Updates the EIP if an instruction was executed successfully.
703	* @param pvFault The fault address (CR2).
704	*
705	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
706	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
707	* to worry about e.g. invalid modrm combinations (!)
708	*/
709	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstruction(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault)
710	{
711	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
712	LogFlow(("EMInterpretInstruction %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
713	#ifdef VBOX_WITH_IEM
714	NOREF(pvFault);
715
716	# ifdef VBOX_COMPARE_IEM_AND_EM
717	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
718	g_IncomingCtx = *pCtx;
719	g_fIncomingFFs = pVCpu->fLocalForcedActions;
720	g_cbEmWrote = g_cbIemWrote = 0;
721
722	# ifdef VBOX_COMPARE_IEM_FIRST
723	/* IEM */
724	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
725	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
726	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
727	rcIem = VERR_EM_INTERPRETER;
728	g_IemCtx = *pCtx;
729	g_fIemFFs = pVCpu->fLocalForcedActions;
730	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
731	*pCtx = g_IncomingCtx;
732	# endif
733
734	/* EM */
735	RTGCPTR pbCode;
736	VBOXSTRICTRC rcEm = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
737	if (RT_SUCCESS(rcEm))
738	{
739	uint32_t cbOp;
740	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
741	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
742	rcEm = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
743	if (RT_SUCCESS(rcEm))
744	{
745	Assert(cbOp == pDis->cbInstr);
746	uint32_t cbIgnored;
747	rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbIgnored);
748	if (RT_SUCCESS(rcEm))
749	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
750
751	}
752	rcEm = VERR_EM_INTERPRETER;
753	}
754	else
755	rcEm = VERR_EM_INTERPRETER;
756	# ifdef VBOX_SAME_AS_EM
757	if (rcEm == VERR_EM_INTERPRETER)
758	{
759	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
760	return rcEm;
761	}
762	# endif
763	g_EmCtx = *pCtx;
764	g_fEmFFs = pVCpu->fLocalForcedActions;
765	VBOXSTRICTRC rc = rcEm;
766
767	# ifdef VBOX_COMPARE_IEM_LAST
768	/* IEM */
769	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
770	*pCtx = g_IncomingCtx;
771	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
772	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
773	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
774	rcIem = VERR_EM_INTERPRETER;
775	g_IemCtx = *pCtx;
776	g_fIemFFs = pVCpu->fLocalForcedActions;
777	rc = rcIem;
778	# endif
779
780	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
781	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, 0, 0);
782	# endif
783
784	# else
785	VBOXSTRICTRC rc = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
786	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
787	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
788	rc = VERR_EM_INTERPRETER;
789	# endif
790	if (rc != VINF_SUCCESS)
791	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
792
793	return rc;
794	#else
795	RTGCPTR pbCode;
796	VBOXSTRICTRC rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
797	if (RT_SUCCESS(rc))
798	{
799	uint32_t cbOp;
800	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
801	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
802	rc = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
803	if (RT_SUCCESS(rc))
804	{
805	Assert(cbOp == pDis->cbInstr);
806	uint32_t cbIgnored;
807	rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbIgnored);
808	if (RT_SUCCESS(rc))
809	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
810
811	return rc;
812	}
813	}
814	return VERR_EM_INTERPRETER;
815	#endif
816	}
817
818
819	/**
820	* Interprets the current instruction.
821	*
822	* @returns VBox status code.
823	* @retval VINF_* Scheduling instructions.
824	* @retval VERR_EM_INTERPRETER Something we can't cope with.
825	* @retval VERR_* Fatal errors.
826	*
827	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
828	* @param pRegFrame The register frame.
829	* Updates the EIP if an instruction was executed successfully.
830	* @param pvFault The fault address (CR2).
831	* @param pcbWritten Size of the write (if applicable).
832	*
833	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
834	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
835	* to worry about e.g. invalid modrm combinations (!)
836	*/
837	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionEx(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbWritten)
838	{
839	LogFlow(("EMInterpretInstructionEx %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
840	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
841	#ifdef VBOX_WITH_IEM
842	NOREF(pvFault);
843
844	# ifdef VBOX_COMPARE_IEM_AND_EM
845	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
846	g_IncomingCtx = *pCtx;
847	g_fIncomingFFs = pVCpu->fLocalForcedActions;
848	g_cbEmWrote = g_cbIemWrote = 0;
849
850	# ifdef VBOX_COMPARE_IEM_FIRST
851	/* IEM */
852	uint32_t cbIemWritten = 0;
853	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, &cbIemWritten);
854	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
855	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
856	rcIem = VERR_EM_INTERPRETER;
857	g_IemCtx = *pCtx;
858	g_fIemFFs = pVCpu->fLocalForcedActions;
859	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
860	*pCtx = g_IncomingCtx;
861	# endif
862
863	/* EM */
864	uint32_t cbEmWritten = 0;
865	RTGCPTR pbCode;
866	VBOXSTRICTRC rcEm = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
867	if (RT_SUCCESS(rcEm))
868	{
869	uint32_t cbOp;
870	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
871	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
872	rcEm = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
873	if (RT_SUCCESS(rcEm))
874	{
875	Assert(cbOp == pDis->cbInstr);
876	rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbEmWritten);
877	if (RT_SUCCESS(rcEm))
878	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
879
880	}
881	else
882	rcEm = VERR_EM_INTERPRETER;
883	}
884	else
885	rcEm = VERR_EM_INTERPRETER;
886	# ifdef VBOX_SAME_AS_EM
887	if (rcEm == VERR_EM_INTERPRETER)
888	{
889	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
890	return rcEm;
891	}
892	# endif
893	g_EmCtx = *pCtx;
894	g_fEmFFs = pVCpu->fLocalForcedActions;
895	*pcbWritten = cbEmWritten;
896	VBOXSTRICTRC rc = rcEm;
897
898	# ifdef VBOX_COMPARE_IEM_LAST
899	/* IEM */
900	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
901	*pCtx = g_IncomingCtx;
902	uint32_t cbIemWritten = 0;
903	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, &cbIemWritten);
904	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
905	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
906	rcIem = VERR_EM_INTERPRETER;
907	g_IemCtx = *pCtx;
908	g_fIemFFs = pVCpu->fLocalForcedActions;
909	*pcbWritten = cbIemWritten;
910	rc = rcIem;
911	# endif
912
913	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
914	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, cbEmWritten, cbIemWritten);
915	# endif
916
917	# else
918	VBOXSTRICTRC rc = IEMExecOneBypassEx(pVCpu, pRegFrame, pcbWritten);
919	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
920	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
921	rc = VERR_EM_INTERPRETER;
922	# endif
923	if (rc != VINF_SUCCESS)
924	Log(("EMInterpretInstructionEx: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
925
926	return rc;
927	#else
928	RTGCPTR pbCode;
929	VBOXSTRICTRC rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
930	if (RT_SUCCESS(rc))
931	{
932	uint32_t cbOp;
933	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
934	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
935	rc = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
936	if (RT_SUCCESS(rc))
937	{
938	Assert(cbOp == pDis->cbInstr);
939	rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, pcbWritten);
940	if (RT_SUCCESS(rc))
941	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
942
943	return rc;
944	}
945	}
946	return VERR_EM_INTERPRETER;
947	#endif
948	}
949
950
951	/**
952	* Interprets the current instruction using the supplied DISCPUSTATE structure.
953	*
954	* IP/EIP/RIP IS updated!
955	*
956	* @returns VBox strict status code.
957	* @retval VINF_* Scheduling instructions. When these are returned, it
958	* starts to get a bit tricky to know whether code was
959	* executed or not... We'll address this when it becomes a problem.
960	* @retval VERR_EM_INTERPRETER Something we can't cope with.
961	* @retval VERR_* Fatal errors.
962	*
963	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
964	* @param pDis The disassembler cpu state for the instruction to be
965	* interpreted.
966	* @param pRegFrame The register frame. IP/EIP/RIP IS changed!
967	* @param pvFault The fault address (CR2).
968	* @param enmCodeType Code type (user/supervisor)
969	*
970	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
971	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
972	* to worry about e.g. invalid modrm combinations (!)
973	*
974	* @todo At this time we do NOT check if the instruction overwrites vital information.
975	* Make sure this can't happen!! (will add some assertions/checks later)
976	*/
977	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionDisasState(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
978	RTGCPTR pvFault, EMCODETYPE enmCodeType)
979	{
980	LogFlow(("EMInterpretInstructionDisasState %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
981	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
982	#ifdef VBOX_WITH_IEM
983	NOREF(pDis); NOREF(pvFault); NOREF(enmCodeType);
984
985	# ifdef VBOX_COMPARE_IEM_AND_EM
986	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
987	g_IncomingCtx = *pCtx;
988	g_fIncomingFFs = pVCpu->fLocalForcedActions;
989	g_cbEmWrote = g_cbIemWrote = 0;
990
991	# ifdef VBOX_COMPARE_IEM_FIRST
992	VBOXSTRICTRC rcIem = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
993	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
994	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
995	rcIem = VERR_EM_INTERPRETER;
996	g_IemCtx = *pCtx;
997	g_fIemFFs = pVCpu->fLocalForcedActions;
998	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
999	*pCtx = g_IncomingCtx;
1000	# endif
1001
1002	/* EM */
1003	uint32_t cbIgnored;
1004	VBOXSTRICTRC rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, enmCodeType, &cbIgnored);
1005	if (RT_SUCCESS(rcEm))
1006	pRegFrame->rip += pDis->cbInstr; /* Move on to the next instruction. */
1007	# ifdef VBOX_SAME_AS_EM
1008	if (rcEm == VERR_EM_INTERPRETER)
1009	{
1010	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
1011	return rcEm;
1012	}
1013	# endif
1014	g_EmCtx = *pCtx;
1015	g_fEmFFs = pVCpu->fLocalForcedActions;
1016	VBOXSTRICTRC rc = rcEm;
1017
1018	# ifdef VBOX_COMPARE_IEM_LAST
1019	/* IEM */
1020	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
1021	*pCtx = g_IncomingCtx;
1022	VBOXSTRICTRC rcIem = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
1023	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
1024	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
1025	rcIem = VERR_EM_INTERPRETER;
1026	g_IemCtx = *pCtx;
1027	g_fIemFFs = pVCpu->fLocalForcedActions;
1028	rc = rcIem;
1029	# endif
1030
1031	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
1032	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, 0, 0);
1033	# endif
1034
1035	# else
1036	VBOXSTRICTRC rc = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
1037	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
1038	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
1039	rc = VERR_EM_INTERPRETER;
1040	# endif
1041
1042	if (rc != VINF_SUCCESS)
1043	Log(("EMInterpretInstructionDisasState: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
1044
1045	return rc;
1046	#else
1047	uint32_t cbIgnored;
1048	VBOXSTRICTRC rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, enmCodeType, &cbIgnored);
1049	if (RT_SUCCESS(rc))
1050	pRegFrame->rip += pDis->cbInstr; /* Move on to the next instruction. */
1051	return rc;
1052	#endif
1053	}
1054
1055	#ifdef IN_RC
1056
1057	DECLINLINE(int) emRCStackRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCPTR GCPtrSrc, uint32_t cb)
1058	{
1059	int rc = MMGCRamRead(pVM, pvDst, (void *)(uintptr_t)GCPtrSrc, cb);
1060	if (RT_LIKELY(rc != VERR_ACCESS_DENIED))
1061	return rc;
1062	return PGMPhysInterpretedReadNoHandlers(pVCpu, pCtxCore, pvDst, GCPtrSrc, cb, /fMayTrap/ false);
1063	}
1064
1065
1066	/**
1067	* Interpret IRET (currently only to V86 code) - PATM only.
1068	*
1069	* @returns VBox status code.
1070	* @param pVM The cross context VM structure.
1071	* @param pVCpu The cross context virtual CPU structure.
1072	* @param pRegFrame The register frame.
1073	*
1074	*/
1075	VMM_INT_DECL(int) EMInterpretIretV86ForPatm(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1076	{
1077	RTGCUINTPTR pIretStack = (RTGCUINTPTR)pRegFrame->esp;
1078	RTGCUINTPTR eip, cs, esp, ss, eflags, ds, es, fs, gs, uMask;
1079	int rc;
1080
1081	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1082	Assert(!CPUMIsGuestIn64BitCode(pVCpu));
1083	/** @todo Rainy day: Test what happens when VERR_EM_INTERPRETER is returned by
1084	* this function. Fear that it may guru on us, thus not converted to
1085	* IEM. */
1086
1087	rc = emRCStackRead(pVM, pVCpu, pRegFrame, &eip, (RTGCPTR)pIretStack , 4);
1088	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &cs, (RTGCPTR)(pIretStack + 4), 4);
1089	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &eflags, (RTGCPTR)(pIretStack + 8), 4);
1090	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1091	AssertReturn(eflags & X86_EFL_VM, VERR_EM_INTERPRETER);
1092
1093	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &esp, (RTGCPTR)(pIretStack + 12), 4);
1094	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ss, (RTGCPTR)(pIretStack + 16), 4);
1095	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &es, (RTGCPTR)(pIretStack + 20), 4);
1096	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ds, (RTGCPTR)(pIretStack + 24), 4);
1097	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &fs, (RTGCPTR)(pIretStack + 28), 4);
1098	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &gs, (RTGCPTR)(pIretStack + 32), 4);
1099	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1100
1101	pRegFrame->eip = eip & 0xffff;
1102	pRegFrame->cs.Sel = cs;
1103
1104	/* Mask away all reserved bits */
1105	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;
1106	eflags &= uMask;
1107
1108	CPUMRawSetEFlags(pVCpu, eflags);
1109	Assert((pRegFrame->eflags.u32 & (X86_EFL_IF\|X86_EFL_IOPL)) == X86_EFL_IF);
1110
1111	pRegFrame->esp = esp;
1112	pRegFrame->ss.Sel = ss;
1113	pRegFrame->ds.Sel = ds;
1114	pRegFrame->es.Sel = es;
1115	pRegFrame->fs.Sel = fs;
1116	pRegFrame->gs.Sel = gs;
1117
1118	return VINF_SUCCESS;
1119	}
1120
1121	/**
1122	* IRET Emulation.
1123	*/
1124	static int emInterpretIret(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1125	{
1126	#ifdef VBOX_WITH_RAW_RING1
1127	NOREF(pvFault); NOREF(pcbSize);
1128	if (EMIsRawRing1Enabled(pVM))
1129	{
1130	RTGCUINTPTR pIretStack = (RTGCUINTPTR)pRegFrame->esp;
1131	RTGCUINTPTR eip, cs, esp, ss, eflags, uMask;
1132	int rc;
1133	uint32_t cpl, rpl;
1134
1135	/* We only execute 32-bits protected mode code in raw mode, so no need to bother to check for 16-bits code here. */
1136	/* @todo: we don't verify all the edge cases that generate #GP faults */
1137
1138	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1139	Assert(!CPUMIsGuestIn64BitCode(pVCpu));
1140	/** @todo Rainy day: Test what happens when VERR_EM_INTERPRETER is returned by
1141	* this function. Fear that it may guru on us, thus not converted to
1142	* IEM. */
1143
1144	rc = emRCStackRead(pVM, pVCpu, pRegFrame, &eip, (RTGCPTR)pIretStack , 4);
1145	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &cs, (RTGCPTR)(pIretStack + 4), 4);
1146	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &eflags, (RTGCPTR)(pIretStack + 8), 4);
1147	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1148	AssertReturn(eflags & X86_EFL_VM, VERR_EM_INTERPRETER);
1149
1150	/* Deal with V86 above. */
1151	if (eflags & X86_EFL_VM)
1152	return EMInterpretIretV86ForPatm(pVM, pVCpu, pRegFrame);
1153
1154	cpl = CPUMRCGetGuestCPL(pVCpu, pRegFrame);
1155	rpl = cs & X86_SEL_RPL;
1156
1157	Log(("emInterpretIret: iret to CS:EIP=%04X:%08X eflags=%x\n", cs, eip, eflags));
1158	if (rpl != cpl)
1159	{
1160	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &esp, (RTGCPTR)(pIretStack + 12), 4);
1161	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ss, (RTGCPTR)(pIretStack + 16), 4);
1162	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1163	Log(("emInterpretIret: return to different privilege level (rpl=%d cpl=%d)\n", rpl, cpl));
1164	Log(("emInterpretIret: SS:ESP=%04x:%08x\n", ss, esp));
1165	pRegFrame->ss.Sel = ss;
1166	pRegFrame->esp = esp;
1167	}
1168	pRegFrame->cs.Sel = cs;
1169	pRegFrame->eip = eip;
1170
1171	/* Adjust CS & SS as required. */
1172	CPUMRCRecheckRawState(pVCpu, pRegFrame);
1173
1174	/* Mask away all reserved bits */
1175	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;
1176	eflags &= uMask;
1177
1178	CPUMRawSetEFlags(pVCpu, eflags);
1179	Assert((pRegFrame->eflags.u32 & (X86_EFL_IF\|X86_EFL_IOPL)) == X86_EFL_IF);
1180	return VINF_SUCCESS;
1181	}
1182	#else
1183	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
1184	#endif
1185	return VERR_EM_INTERPRETER;
1186	}
1187
1188	#endif /* IN_RC */
1189
1190
1191
1192	/*
1193	*
1194	* Old interpreter primitives used by HM, move/eliminate later.
1195	* Old interpreter primitives used by HM, move/eliminate later.
1196	* Old interpreter primitives used by HM, move/eliminate later.
1197	* Old interpreter primitives used by HM, move/eliminate later.
1198	* Old interpreter primitives used by HM, move/eliminate later.
1199	*
1200	*/
1201
1202
1203	/**
1204	* Interpret CPUID given the parameters in the CPU context.
1205	*
1206	* @returns VBox status code.
1207	* @param pVM The cross context VM structure.
1208	* @param pVCpu The cross context virtual CPU structure.
1209	* @param pRegFrame The register frame.
1210	*
1211	*/
1212	VMM_INT_DECL(int) EMInterpretCpuId(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1213	{
1214	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1215	uint32_t iLeaf = pRegFrame->eax;
1216	uint32_t iSubLeaf = pRegFrame->ecx;
1217	NOREF(pVM);
1218
1219	/* cpuid clears the high dwords of the affected 64 bits registers. */
1220	pRegFrame->rax = 0;
1221	pRegFrame->rbx = 0;
1222	pRegFrame->rcx = 0;
1223	pRegFrame->rdx = 0;
1224
1225	/* Note: operates the same in 64 and non-64 bits mode. */
1226	CPUMGetGuestCpuId(pVCpu, iLeaf, iSubLeaf, &pRegFrame->eax, &pRegFrame->ebx, &pRegFrame->ecx, &pRegFrame->edx);
1227	Log(("Emulate: CPUID %x -> %08x %08x %08x %08x\n", iLeaf, pRegFrame->eax, pRegFrame->ebx, pRegFrame->ecx, pRegFrame->edx));
1228	return VINF_SUCCESS;
1229	}
1230
1231
1232	/**
1233	* Interpret RDTSC.
1234	*
1235	* @returns VBox status code.
1236	* @param pVM The cross context VM structure.
1237	* @param pVCpu The cross context virtual CPU structure.
1238	* @param pRegFrame The register frame.
1239	*
1240	*/
1241	VMM_INT_DECL(int) EMInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1242	{
1243	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1244	unsigned uCR4 = CPUMGetGuestCR4(pVCpu);
1245
1246	if (uCR4 & X86_CR4_TSD)
1247	return VERR_EM_INTERPRETER; /* genuine #GP */
1248
1249	uint64_t uTicks = TMCpuTickGet(pVCpu);
1250
1251	/* Same behaviour in 32 & 64 bits mode */
1252	pRegFrame->rax = (uint32_t)uTicks;
1253	pRegFrame->rdx = (uTicks >> 32ULL);
1254	#ifdef VBOX_COMPARE_IEM_AND_EM
1255	g_fIgnoreRaxRdx = true;
1256	#endif
1257
1258	NOREF(pVM);
1259	return VINF_SUCCESS;
1260	}
1261
1262	/**
1263	* Interpret RDTSCP.
1264	*
1265	* @returns VBox status code.
1266	* @param pVM The cross context VM structure.
1267	* @param pVCpu The cross context virtual CPU structure.
1268	* @param pCtx The CPU context.
1269	*
1270	*/
1271	VMM_INT_DECL(int) EMInterpretRdtscp(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
1272	{
1273	Assert(pCtx == CPUMQueryGuestCtxPtr(pVCpu));
1274	uint32_t uCR4 = CPUMGetGuestCR4(pVCpu);
1275
1276	if (!CPUMGetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_RDTSCP))
1277	{
1278	AssertFailed();
1279	return VERR_EM_INTERPRETER; /* genuine #UD */
1280	}
1281
1282	if (uCR4 & X86_CR4_TSD)
1283	return VERR_EM_INTERPRETER; /* genuine #GP */
1284
1285	uint64_t uTicks = TMCpuTickGet(pVCpu);
1286
1287	/* Same behaviour in 32 & 64 bits mode */
1288	pCtx->rax = (uint32_t)uTicks;
1289	pCtx->rdx = (uTicks >> 32ULL);
1290	#ifdef VBOX_COMPARE_IEM_AND_EM
1291	g_fIgnoreRaxRdx = true;
1292	#endif
1293	/* Low dword of the TSC_AUX msr only. */
1294	VBOXSTRICTRC rc2 = CPUMQueryGuestMsr(pVCpu, MSR_K8_TSC_AUX, &pCtx->rcx); Assert(rc2 == VINF_SUCCESS); NOREF(rc2);
1295	pCtx->rcx &= UINT32_C(0xffffffff);
1296
1297	return VINF_SUCCESS;
1298	}
1299
1300	/**
1301	* Interpret RDPMC.
1302	*
1303	* @returns VBox status code.
1304	* @param pVM The cross context VM structure.
1305	* @param pVCpu The cross context virtual CPU structure.
1306	* @param pRegFrame The register frame.
1307	*
1308	*/
1309	VMM_INT_DECL(int) EMInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1310	{
1311	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1312	uint32_t uCR4 = CPUMGetGuestCR4(pVCpu);
1313
1314	/* If X86_CR4_PCE is not set, then CPL must be zero. */
1315	if ( !(uCR4 & X86_CR4_PCE)
1316	&& CPUMGetGuestCPL(pVCpu) != 0)
1317	{
1318	Assert(CPUMGetGuestCR0(pVCpu) & X86_CR0_PE);
1319	return VERR_EM_INTERPRETER; /* genuine #GP */
1320	}
1321
1322	/* Just return zero here; rather tricky to properly emulate this, especially as the specs are a mess. */
1323	pRegFrame->rax = 0;
1324	pRegFrame->rdx = 0;
1325	/** @todo We should trigger a \#GP here if the CPU doesn't support the index in
1326	* ecx but see @bugref{3472}! */
1327
1328	NOREF(pVM);
1329	return VINF_SUCCESS;
1330	}
1331
1332
1333	/**
1334	* MWAIT Emulation.
1335	*/
1336	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretMWait(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1337	{
1338	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1339	uint32_t u32Dummy, u32ExtFeatures, cpl, u32MWaitFeatures;
1340	NOREF(pVM);
1341
1342	/* Get the current privilege level. */
1343	cpl = CPUMGetGuestCPL(pVCpu);
1344	if (cpl != 0)
1345	return VERR_EM_INTERPRETER; /* supervisor only */
1346
1347	CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &u32ExtFeatures, &u32Dummy);
1348	if (!(u32ExtFeatures & X86_CPUID_FEATURE_ECX_MONITOR))
1349	return VERR_EM_INTERPRETER; /* not supported */
1350
1351	/*
1352	* CPUID.05H.ECX[0] defines support for power management extensions (eax)
1353	* CPUID.05H.ECX[1] defines support for interrupts as break events for mwait even when IF=0
1354	*/
1355	CPUMGetGuestCpuId(pVCpu, 5, 0, &u32Dummy, &u32Dummy, &u32MWaitFeatures, &u32Dummy);
1356	if (pRegFrame->ecx > 1)
1357	{
1358	Log(("EMInterpretMWait: unexpected ecx value %x -> recompiler\n", pRegFrame->ecx));
1359	return VERR_EM_INTERPRETER; /* illegal value. */
1360	}
1361
1362	if (pRegFrame->ecx && !(u32MWaitFeatures & X86_CPUID_MWAIT_ECX_BREAKIRQIF0))
1363	{
1364	Log(("EMInterpretMWait: unsupported X86_CPUID_MWAIT_ECX_BREAKIRQIF0 -> recompiler\n"));
1365	return VERR_EM_INTERPRETER; /* illegal value. */
1366	}
1367
1368	return EMMonitorWaitPerform(pVCpu, pRegFrame->rax, pRegFrame->rcx);
1369	}
1370
1371
1372	/**
1373	* MONITOR Emulation.
1374	*/
1375	VMM_INT_DECL(int) EMInterpretMonitor(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1376	{
1377	uint32_t u32Dummy, u32ExtFeatures, cpl;
1378	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1379	NOREF(pVM);
1380
1381	if (pRegFrame->ecx != 0)
1382	{
1383	Log(("emInterpretMonitor: unexpected ecx=%x -> recompiler!!\n", pRegFrame->ecx));
1384	return VERR_EM_INTERPRETER; /* illegal value. */
1385	}
1386
1387	/* Get the current privilege level. */
1388	cpl = CPUMGetGuestCPL(pVCpu);
1389	if (cpl != 0)
1390	return VERR_EM_INTERPRETER; /* supervisor only */
1391
1392	CPUMGetGuestCpuId(pVCpu, 1, 0, &u32Dummy, &u32Dummy, &u32ExtFeatures, &u32Dummy);
1393	if (!(u32ExtFeatures & X86_CPUID_FEATURE_ECX_MONITOR))
1394	return VERR_EM_INTERPRETER; /* not supported */
1395
1396	EMMonitorWaitPrepare(pVCpu, pRegFrame->rax, pRegFrame->rcx, pRegFrame->rdx, NIL_RTGCPHYS);
1397	return VINF_SUCCESS;
1398	}
1399
1400
1401	/* VT-x only: */
1402
1403	/**
1404	* Interpret INVLPG.
1405	*
1406	* @returns VBox status code.
1407	* @param pVM The cross context VM structure.
1408	* @param pVCpu The cross context virtual CPU structure.
1409	* @param pRegFrame The register frame.
1410	* @param pAddrGC Operand address.
1411	*
1412	*/
1413	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pAddrGC)
1414	{
1415	/** @todo is addr always a flat linear address or ds based
1416	* (in absence of segment override prefixes)????
1417	*/
1418	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1419	NOREF(pVM); NOREF(pRegFrame);
1420	#ifdef IN_RC
1421	LogFlow(("RC: EMULATE: invlpg %RGv\n", pAddrGC));
1422	#endif
1423	VBOXSTRICTRC rc = PGMInvalidatePage(pVCpu, pAddrGC);
1424	if ( rc == VINF_SUCCESS
1425	\|\| rc == VINF_PGM_SYNC_CR3 /* we can rely on the FF */)
1426	return VINF_SUCCESS;
1427	AssertMsgReturn(rc == VINF_EM_RAW_EMULATE_INSTR,
1428	("%Rrc addr=%RGv\n", VBOXSTRICTRC_VAL(rc), pAddrGC),
1429	VERR_EM_INTERPRETER);
1430	return rc;
1431	}
1432
1433
1434	#ifdef LOG_ENABLED
1435	static const char *emMSRtoString(uint32_t uMsr)
1436	{
1437	switch (uMsr)
1438	{
1439	case MSR_IA32_APICBASE: return "MSR_IA32_APICBASE";
1440	case MSR_IA32_CR_PAT: return "MSR_IA32_CR_PAT";
1441	case MSR_IA32_SYSENTER_CS: return "MSR_IA32_SYSENTER_CS";
1442	case MSR_IA32_SYSENTER_EIP: return "MSR_IA32_SYSENTER_EIP";
1443	case MSR_IA32_SYSENTER_ESP: return "MSR_IA32_SYSENTER_ESP";
1444	case MSR_K6_EFER: return "MSR_K6_EFER";
1445	case MSR_K8_SF_MASK: return "MSR_K8_SF_MASK";
1446	case MSR_K6_STAR: return "MSR_K6_STAR";
1447	case MSR_K8_LSTAR: return "MSR_K8_LSTAR";
1448	case MSR_K8_CSTAR: return "MSR_K8_CSTAR";
1449	case MSR_K8_FS_BASE: return "MSR_K8_FS_BASE";
1450	case MSR_K8_GS_BASE: return "MSR_K8_GS_BASE";
1451	case MSR_K8_KERNEL_GS_BASE: return "MSR_K8_KERNEL_GS_BASE";
1452	case MSR_K8_TSC_AUX: return "MSR_K8_TSC_AUX";
1453	case MSR_IA32_BIOS_SIGN_ID: return "Unsupported MSR_IA32_BIOS_SIGN_ID";
1454	case MSR_IA32_PLATFORM_ID: return "Unsupported MSR_IA32_PLATFORM_ID";
1455	case MSR_IA32_BIOS_UPDT_TRIG: return "Unsupported MSR_IA32_BIOS_UPDT_TRIG";
1456	case MSR_IA32_TSC: return "MSR_IA32_TSC";
1457	case MSR_IA32_MISC_ENABLE: return "MSR_IA32_MISC_ENABLE";
1458	case MSR_IA32_MTRR_CAP: return "MSR_IA32_MTRR_CAP";
1459	case MSR_IA32_MCG_CAP: return "Unsupported MSR_IA32_MCG_CAP";
1460	case MSR_IA32_MCG_STATUS: return "Unsupported MSR_IA32_MCG_STATUS";
1461	case MSR_IA32_MCG_CTRL: return "Unsupported MSR_IA32_MCG_CTRL";
1462	case MSR_IA32_MTRR_DEF_TYPE: return "MSR_IA32_MTRR_DEF_TYPE";
1463	case MSR_K7_EVNTSEL0: return "Unsupported MSR_K7_EVNTSEL0";
1464	case MSR_K7_EVNTSEL1: return "Unsupported MSR_K7_EVNTSEL1";
1465	case MSR_K7_EVNTSEL2: return "Unsupported MSR_K7_EVNTSEL2";
1466	case MSR_K7_EVNTSEL3: return "Unsupported MSR_K7_EVNTSEL3";
1467	case MSR_IA32_MC0_CTL: return "Unsupported MSR_IA32_MC0_CTL";
1468	case MSR_IA32_MC0_STATUS: return "Unsupported MSR_IA32_MC0_STATUS";
1469	case MSR_IA32_PERFEVTSEL0: return "Unsupported MSR_IA32_PERFEVTSEL0";
1470	case MSR_IA32_PERFEVTSEL1: return "Unsupported MSR_IA32_PERFEVTSEL1";
1471	case MSR_IA32_PERF_STATUS: return "MSR_IA32_PERF_STATUS";
1472	case MSR_IA32_PLATFORM_INFO: return "MSR_IA32_PLATFORM_INFO";
1473	case MSR_IA32_PERF_CTL: return "Unsupported MSR_IA32_PERF_CTL";
1474	case MSR_K7_PERFCTR0: return "Unsupported MSR_K7_PERFCTR0";
1475	case MSR_K7_PERFCTR1: return "Unsupported MSR_K7_PERFCTR1";
1476	case MSR_K7_PERFCTR2: return "Unsupported MSR_K7_PERFCTR2";
1477	case MSR_K7_PERFCTR3: return "Unsupported MSR_K7_PERFCTR3";
1478	case MSR_IA32_PMC0: return "Unsupported MSR_IA32_PMC0";
1479	case MSR_IA32_PMC1: return "Unsupported MSR_IA32_PMC1";
1480	case MSR_IA32_PMC2: return "Unsupported MSR_IA32_PMC2";
1481	case MSR_IA32_PMC3: return "Unsupported MSR_IA32_PMC3";
1482	}
1483	return "Unknown MSR";
1484	}
1485	#endif /* LOG_ENABLED */
1486
1487
1488	/**
1489	* Interpret RDMSR
1490	*
1491	* @returns VBox status code.
1492	* @param pVM The cross context VM structure.
1493	* @param pVCpu The cross context virtual CPU structure.
1494	* @param pRegFrame The register frame.
1495	*/
1496	VMM_INT_DECL(int) EMInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1497	{
1498	NOREF(pVM);
1499
1500	/* Get the current privilege level. */
1501	if (CPUMGetGuestCPL(pVCpu) != 0)
1502	{
1503	Log4(("EM: Refuse RDMSR: CPL != 0\n"));
1504	return VERR_EM_INTERPRETER; /* supervisor only */
1505	}
1506
1507	uint64_t uValue;
1508	VBOXSTRICTRC rcStrict = CPUMQueryGuestMsr(pVCpu, pRegFrame->ecx, &uValue);
1509	if (RT_UNLIKELY(rcStrict != VINF_SUCCESS))
1510	{
1511	Log4(("EM: Refuse RDMSR: rc=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
1512	Assert(rcStrict == VERR_CPUM_RAISE_GP_0 \|\| rcStrict == VERR_EM_INTERPRETER \|\| rcStrict == VINF_CPUM_R3_MSR_READ);
1513	return VERR_EM_INTERPRETER;
1514	}
1515	pRegFrame->rax = (uint32_t) uValue;
1516	pRegFrame->rdx = (uint32_t)(uValue >> 32);
1517	LogFlow(("EMInterpretRdmsr %s (%x) -> %RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx, uValue));
1518	return VINF_SUCCESS;
1519	}
1520
1521
1522	/**
1523	* Interpret WRMSR
1524	*
1525	* @returns VBox status code.
1526	* @param pVM The cross context VM structure.
1527	* @param pVCpu The cross context virtual CPU structure.
1528	* @param pRegFrame The register frame.
1529	*/
1530	VMM_INT_DECL(int) EMInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1531	{
1532	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1533
1534	/* Check the current privilege level, this instruction is supervisor only. */
1535	if (CPUMGetGuestCPL(pVCpu) != 0)
1536	{
1537	Log4(("EM: Refuse WRMSR: CPL != 0\n"));
1538	return VERR_EM_INTERPRETER; /** @todo raise \#GP(0) */
1539	}
1540
1541	VBOXSTRICTRC rcStrict = CPUMSetGuestMsr(pVCpu, pRegFrame->ecx, RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx));
1542	if (rcStrict != VINF_SUCCESS)
1543	{
1544	Log4(("EM: Refuse WRMSR: CPUMSetGuestMsr returned %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
1545	Assert(rcStrict == VERR_CPUM_RAISE_GP_0 \|\| rcStrict == VERR_EM_INTERPRETER \|\| rcStrict == VINF_CPUM_R3_MSR_WRITE);
1546	return VERR_EM_INTERPRETER;
1547	}
1548	LogFlow(("EMInterpretWrmsr %s (%x) val=%RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx,
1549	RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx)));
1550	NOREF(pVM);
1551	return VINF_SUCCESS;
1552	}
1553
1554
1555	/**
1556	* Interpret DRx write.
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	* @param DestRegDrx DRx register index (USE_REG_DR*)
1563	* @param SrcRegGen General purpose register index (USE_REG_E**))
1564	*
1565	*/
1566	VMM_INT_DECL(int) EMInterpretDRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegDrx, uint32_t SrcRegGen)
1567	{
1568	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1569	uint64_t uNewDrX;
1570	int rc;
1571	NOREF(pVM);
1572
1573	if (CPUMIsGuestIn64BitCode(pVCpu))
1574	rc = DISFetchReg64(pRegFrame, SrcRegGen, &uNewDrX);
1575	else
1576	{
1577	uint32_t val32;
1578	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
1579	uNewDrX = val32;
1580	}
1581
1582	if (RT_SUCCESS(rc))
1583	{
1584	if (DestRegDrx == 6)
1585	{
1586	uNewDrX \|= X86_DR6_RA1_MASK;
1587	uNewDrX &= ~X86_DR6_RAZ_MASK;
1588	}
1589	else if (DestRegDrx == 7)
1590	{
1591	uNewDrX \|= X86_DR7_RA1_MASK;
1592	uNewDrX &= ~X86_DR7_RAZ_MASK;
1593	}
1594
1595	/** @todo we don't fail if illegal bits are set/cleared for e.g. dr7 */
1596	rc = CPUMSetGuestDRx(pVCpu, DestRegDrx, uNewDrX);
1597	if (RT_SUCCESS(rc))
1598	return rc;
1599	AssertMsgFailed(("CPUMSetGuestDRx %d failed\n", DestRegDrx));
1600	}
1601	return VERR_EM_INTERPRETER;
1602	}
1603
1604
1605	/**
1606	* Interpret DRx read.
1607	*
1608	* @returns VBox status code.
1609	* @param pVM The cross context VM structure.
1610	* @param pVCpu The cross context virtual CPU structure.
1611	* @param pRegFrame The register frame.
1612	* @param DestRegGen General purpose register index (USE_REG_E**))
1613	* @param SrcRegDrx DRx register index (USE_REG_DR*)
1614	*/
1615	VMM_INT_DECL(int) EMInterpretDRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegDrx)
1616	{
1617	uint64_t val64;
1618	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1619	NOREF(pVM);
1620
1621	int rc = CPUMGetGuestDRx(pVCpu, SrcRegDrx, &val64);
1622	AssertMsgRCReturn(rc, ("CPUMGetGuestDRx %d failed\n", SrcRegDrx), VERR_EM_INTERPRETER);
1623	if (CPUMIsGuestIn64BitCode(pVCpu))
1624	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
1625	else
1626	rc = DISWriteReg32(pRegFrame, DestRegGen, (uint32_t)val64);
1627
1628	if (RT_SUCCESS(rc))
1629	return VINF_SUCCESS;
1630
1631	return VERR_EM_INTERPRETER;
1632	}
1633
1634
1635	#if !defined(VBOX_WITH_IEM) \|\| defined(VBOX_COMPARE_IEM_AND_EM)
1636
1637
1638
1639
1640
1641
1642	/*
1643	*
1644	* The old interpreter.
1645	* The old interpreter.
1646	* The old interpreter.
1647	* The old interpreter.
1648	* The old interpreter.
1649	*
1650	*/
1651
1652	DECLINLINE(int) emRamRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCPTR GCPtrSrc, uint32_t cb)
1653	{
1654	#ifdef IN_RC
1655	int rc = MMGCRamRead(pVM, pvDst, (void *)(uintptr_t)GCPtrSrc, cb);
1656	if (RT_LIKELY(rc != VERR_ACCESS_DENIED))
1657	return rc;
1658	/*
1659	* The page pool cache may end up here in some cases because it
1660	* flushed one of the shadow mappings used by the trapping
1661	* instruction and it either flushed the TLB or the CPU reused it.
1662	*/
1663	#else
1664	NOREF(pVM);
1665	#endif
1666	return PGMPhysInterpretedReadNoHandlers(pVCpu, pCtxCore, pvDst, GCPtrSrc, cb, /fMayTrap/ false);
1667	}
1668
1669
1670	DECLINLINE(int) emRamWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, RTGCPTR GCPtrDst, const void *pvSrc, uint32_t cb)
1671	{
1672	/* Don't use MMGCRamWrite here as it does not respect zero pages, shared
1673	pages or write monitored pages. */
1674	NOREF(pVM);
1675	#if !defined(VBOX_COMPARE_IEM_AND_EM) \|\| !defined(VBOX_COMPARE_IEM_LAST)
1676	int rc = PGMPhysInterpretedWriteNoHandlers(pVCpu, pCtxCore, GCPtrDst, pvSrc, cb, /fMayTrap/ false);
1677	#else
1678	int rc = VINF_SUCCESS;
1679	#endif
1680	#ifdef VBOX_COMPARE_IEM_AND_EM
1681	Log(("EM Wrote: %RGv %.*Rhxs rc=%Rrc\n", GCPtrDst, RT_MAX(RT_MIN(cb, 64), 1), pvSrc, rc));
1682	g_cbEmWrote = cb;
1683	memcpy(g_abEmWrote, pvSrc, RT_MIN(cb, sizeof(g_abEmWrote)));
1684	#endif
1685	return rc;
1686	}
1687
1688
1689	/** Convert sel:addr to a flat GC address. */
1690	DECLINLINE(RTGCPTR) emConvertToFlatAddr(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pDis, PDISOPPARAM pParam, RTGCPTR pvAddr)
1691	{
1692	DISSELREG enmPrefixSeg = DISDetectSegReg(pDis, pParam);
1693	return SELMToFlat(pVM, enmPrefixSeg, pRegFrame, pvAddr);
1694	}
1695
1696
1697	#if defined(VBOX_STRICT) \|\| defined(LOG_ENABLED)
1698	/**
1699	* Get the mnemonic for the disassembled instruction.
1700	*
1701	* GC/R0 doesn't include the strings in the DIS tables because
1702	* of limited space.
1703	*/
1704	static const char *emGetMnemonic(PDISCPUSTATE pDis)
1705	{
1706	switch (pDis->pCurInstr->uOpcode)
1707	{
1708	case OP_XCHG: return "Xchg";
1709	case OP_DEC: return "Dec";
1710	case OP_INC: return "Inc";
1711	case OP_POP: return "Pop";
1712	case OP_OR: return "Or";
1713	case OP_AND: return "And";
1714	case OP_MOV: return "Mov";
1715	case OP_INVLPG: return "InvlPg";
1716	case OP_CPUID: return "CpuId";
1717	case OP_MOV_CR: return "MovCRx";
1718	case OP_MOV_DR: return "MovDRx";
1719	case OP_LLDT: return "LLdt";
1720	case OP_LGDT: return "LGdt";
1721	case OP_LIDT: return "LIdt";
1722	case OP_CLTS: return "Clts";
1723	case OP_MONITOR: return "Monitor";
1724	case OP_MWAIT: return "MWait";
1725	case OP_RDMSR: return "Rdmsr";
1726	case OP_WRMSR: return "Wrmsr";
1727	case OP_ADD: return "Add";
1728	case OP_ADC: return "Adc";
1729	case OP_SUB: return "Sub";
1730	case OP_SBB: return "Sbb";
1731	case OP_RDTSC: return "Rdtsc";
1732	case OP_STI: return "Sti";
1733	case OP_CLI: return "Cli";
1734	case OP_XADD: return "XAdd";
1735	case OP_HLT: return "Hlt";
1736	case OP_IRET: return "Iret";
1737	case OP_MOVNTPS: return "MovNTPS";
1738	case OP_STOSWD: return "StosWD";
1739	case OP_WBINVD: return "WbInvd";
1740	case OP_XOR: return "Xor";
1741	case OP_BTR: return "Btr";
1742	case OP_BTS: return "Bts";
1743	case OP_BTC: return "Btc";
1744	case OP_LMSW: return "Lmsw";
1745	case OP_SMSW: return "Smsw";
1746	case OP_CMPXCHG: return pDis->fPrefix & DISPREFIX_LOCK ? "Lock CmpXchg" : "CmpXchg";
1747	case OP_CMPXCHG8B: return pDis->fPrefix & DISPREFIX_LOCK ? "Lock CmpXchg8b" : "CmpXchg8b";
1748
1749	default:
1750	Log(("Unknown opcode %d\n", pDis->pCurInstr->uOpcode));
1751	return "???";
1752	}
1753	}
1754	#endif /* VBOX_STRICT \|\| LOG_ENABLED */
1755
1756
1757	/**
1758	* XCHG instruction emulation.
1759	*/
1760	static int emInterpretXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1761	{
1762	DISQPVPARAMVAL param1, param2;
1763	NOREF(pvFault);
1764
1765	/* Source to make DISQueryParamVal read the register value - ugly hack */
1766	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
1767	if(RT_FAILURE(rc))
1768	return VERR_EM_INTERPRETER;
1769
1770	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
1771	if(RT_FAILURE(rc))
1772	return VERR_EM_INTERPRETER;
1773
1774	#ifdef IN_RC
1775	if (TRPMHasTrap(pVCpu))
1776	{
1777	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1778	{
1779	#endif
1780	RTGCPTR pParam1 = 0, pParam2 = 0;
1781	uint64_t valpar1, valpar2;
1782
1783	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
1784	switch(param1.type)
1785	{
1786	case DISQPV_TYPE_IMMEDIATE: /* register type is translated to this one too */
1787	valpar1 = param1.val.val64;
1788	break;
1789
1790	case DISQPV_TYPE_ADDRESS:
1791	pParam1 = (RTGCPTR)param1.val.val64;
1792	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
1793	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
1794	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
1795	if (RT_FAILURE(rc))
1796	{
1797	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1798	return VERR_EM_INTERPRETER;
1799	}
1800	break;
1801
1802	default:
1803	AssertFailed();
1804	return VERR_EM_INTERPRETER;
1805	}
1806
1807	switch(param2.type)
1808	{
1809	case DISQPV_TYPE_ADDRESS:
1810	pParam2 = (RTGCPTR)param2.val.val64;
1811	pParam2 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param2, pParam2);
1812	EM_ASSERT_FAULT_RETURN(pParam2 == pvFault, VERR_EM_INTERPRETER);
1813	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar2, pParam2, param2.size);
1814	if (RT_FAILURE(rc))
1815	{
1816	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1817	}
1818	break;
1819
1820	case DISQPV_TYPE_IMMEDIATE:
1821	valpar2 = param2.val.val64;
1822	break;
1823
1824	default:
1825	AssertFailed();
1826	return VERR_EM_INTERPRETER;
1827	}
1828
1829	/* Write value of parameter 2 to parameter 1 (reg or memory address) */
1830	if (pParam1 == 0)
1831	{
1832	Assert(param1.type == DISQPV_TYPE_IMMEDIATE); /* register actually */
1833	switch(param1.size)
1834	{
1835	case 1: //special case for AH etc
1836	rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t )valpar2); break;
1837	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)valpar2); break;
1838	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)valpar2); break;
1839	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param1.Base.idxGenReg, valpar2); break;
1840	default: AssertFailedReturn(VERR_EM_INTERPRETER);
1841	}
1842	if (RT_FAILURE(rc))
1843	return VERR_EM_INTERPRETER;
1844	}
1845	else
1846	{
1847	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar2, param1.size);
1848	if (RT_FAILURE(rc))
1849	{
1850	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1851	return VERR_EM_INTERPRETER;
1852	}
1853	}
1854
1855	/* Write value of parameter 1 to parameter 2 (reg or memory address) */
1856	if (pParam2 == 0)
1857	{
1858	Assert(param2.type == DISQPV_TYPE_IMMEDIATE); /* register actually */
1859	switch(param2.size)
1860	{
1861	case 1: //special case for AH etc
1862	rc = DISWriteReg8(pRegFrame, pDis->Param2.Base.idxGenReg, (uint8_t )valpar1); break;
1863	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param2.Base.idxGenReg, (uint16_t)valpar1); break;
1864	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param2.Base.idxGenReg, (uint32_t)valpar1); break;
1865	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param2.Base.idxGenReg, valpar1); break;
1866	default: AssertFailedReturn(VERR_EM_INTERPRETER);
1867	}
1868	if (RT_FAILURE(rc))
1869	return VERR_EM_INTERPRETER;
1870	}
1871	else
1872	{
1873	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam2, &valpar1, param2.size);
1874	if (RT_FAILURE(rc))
1875	{
1876	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1877	return VERR_EM_INTERPRETER;
1878	}
1879	}
1880
1881	*pcbSize = param2.size;
1882	return VINF_SUCCESS;
1883	#ifdef IN_RC
1884	}
1885	}
1886	return VERR_EM_INTERPRETER;
1887	#endif
1888	}
1889
1890
1891	/**
1892	* INC and DEC emulation.
1893	*/
1894	static int emInterpretIncDec(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
1895	PFNEMULATEPARAM2 pfnEmulate)
1896	{
1897	DISQPVPARAMVAL param1;
1898	NOREF(pvFault);
1899
1900	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
1901	if(RT_FAILURE(rc))
1902	return VERR_EM_INTERPRETER;
1903
1904	#ifdef IN_RC
1905	if (TRPMHasTrap(pVCpu))
1906	{
1907	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1908	{
1909	#endif
1910	RTGCPTR pParam1 = 0;
1911	uint64_t valpar1;
1912
1913	if (param1.type == DISQPV_TYPE_ADDRESS)
1914	{
1915	pParam1 = (RTGCPTR)param1.val.val64;
1916	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
1917	#ifdef IN_RC
1918	/* Safety check (in theory it could cross a page boundary and fault there though) */
1919	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
1920	#endif
1921	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
1922	if (RT_FAILURE(rc))
1923	{
1924	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1925	return VERR_EM_INTERPRETER;
1926	}
1927	}
1928	else
1929	{
1930	AssertFailed();
1931	return VERR_EM_INTERPRETER;
1932	}
1933
1934	uint32_t eflags;
1935
1936	eflags = pfnEmulate(&valpar1, param1.size);
1937
1938	/* Write result back */
1939	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
1940	if (RT_FAILURE(rc))
1941	{
1942	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1943	return VERR_EM_INTERPRETER;
1944	}
1945
1946	/* Update guest's eflags and finish. */
1947	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
1948	\| (eflags & (X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
1949
1950	/* All done! */
1951	*pcbSize = param1.size;
1952	return VINF_SUCCESS;
1953	#ifdef IN_RC
1954	}
1955	}
1956	return VERR_EM_INTERPRETER;
1957	#endif
1958	}
1959
1960
1961	/**
1962	* POP Emulation.
1963	*/
1964	static int emInterpretPop(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1965	{
1966	Assert(pDis->uCpuMode != DISCPUMODE_64BIT); /** @todo check */
1967	DISQPVPARAMVAL param1;
1968	NOREF(pvFault);
1969
1970	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
1971	if(RT_FAILURE(rc))
1972	return VERR_EM_INTERPRETER;
1973
1974	#ifdef IN_RC
1975	if (TRPMHasTrap(pVCpu))
1976	{
1977	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1978	{
1979	#endif
1980	RTGCPTR pParam1 = 0;
1981	uint32_t valpar1;
1982	RTGCPTR pStackVal;
1983
1984	/* Read stack value first */
1985	if (CPUMGetGuestCodeBits(pVCpu) == 16)
1986	return VERR_EM_INTERPRETER; /* No legacy 16 bits stuff here, please. */
1987
1988	/* Convert address; don't bother checking limits etc, as we only read here */
1989	pStackVal = SELMToFlat(pVM, DISSELREG_SS, pRegFrame, (RTGCPTR)pRegFrame->esp);
1990	if (pStackVal == 0)
1991	return VERR_EM_INTERPRETER;
1992
1993	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pStackVal, param1.size);
1994	if (RT_FAILURE(rc))
1995	{
1996	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1997	return VERR_EM_INTERPRETER;
1998	}
1999
2000	if (param1.type == DISQPV_TYPE_ADDRESS)
2001	{
2002	pParam1 = (RTGCPTR)param1.val.val64;
2003
2004	/* pop [esp+xx] uses esp after the actual pop! */
2005	AssertCompile(DISGREG_ESP == DISGREG_SP);
2006	if ( (pDis->Param1.fUse & DISUSE_BASE)
2007	&& (pDis->Param1.fUse & (DISUSE_REG_GEN16\|DISUSE_REG_GEN32))
2008	&& pDis->Param1.Base.idxGenReg == DISGREG_ESP
2009	)
2010	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + param1.size);
2011
2012	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2013	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault \|\| (RTGCPTR)pRegFrame->esp == pvFault, VERR_EM_INTERPRETER);
2014	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2015	if (RT_FAILURE(rc))
2016	{
2017	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2018	return VERR_EM_INTERPRETER;
2019	}
2020
2021	/* Update ESP as the last step */
2022	pRegFrame->esp += param1.size;
2023	}
2024	else
2025	{
2026	#ifndef DEBUG_bird // annoying assertion.
2027	AssertFailed();
2028	#endif
2029	return VERR_EM_INTERPRETER;
2030	}
2031
2032	/* All done! */
2033	*pcbSize = param1.size;
2034	return VINF_SUCCESS;
2035	#ifdef IN_RC
2036	}
2037	}
2038	return VERR_EM_INTERPRETER;
2039	#endif
2040	}
2041
2042
2043	/**
2044	* XOR/OR/AND Emulation.
2045	*/
2046	static int emInterpretOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2047	PFNEMULATEPARAM3 pfnEmulate)
2048	{
2049	DISQPVPARAMVAL param1, param2;
2050	NOREF(pvFault);
2051
2052	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2053	if(RT_FAILURE(rc))
2054	return VERR_EM_INTERPRETER;
2055
2056	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2057	if(RT_FAILURE(rc))
2058	return VERR_EM_INTERPRETER;
2059
2060	#ifdef IN_RC
2061	if (TRPMHasTrap(pVCpu))
2062	{
2063	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2064	{
2065	#endif
2066	RTGCPTR pParam1;
2067	uint64_t valpar1, valpar2;
2068
2069	if (pDis->Param1.cb != pDis->Param2.cb)
2070	{
2071	if (pDis->Param1.cb < pDis->Param2.cb)
2072	{
2073	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb)); /* should never happen! */
2074	return VERR_EM_INTERPRETER;
2075	}
2076	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2077	pDis->Param2.cb = pDis->Param1.cb;
2078	param2.size = param1.size;
2079	}
2080
2081	/* The destination is always a virtual address */
2082	if (param1.type == DISQPV_TYPE_ADDRESS)
2083	{
2084	pParam1 = (RTGCPTR)param1.val.val64;
2085	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2086	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2087	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2088	if (RT_FAILURE(rc))
2089	{
2090	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2091	return VERR_EM_INTERPRETER;
2092	}
2093	}
2094	else
2095	{
2096	AssertFailed();
2097	return VERR_EM_INTERPRETER;
2098	}
2099
2100	/* Register or immediate data */
2101	switch(param2.type)
2102	{
2103	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2104	valpar2 = param2.val.val64;
2105	break;
2106
2107	default:
2108	AssertFailed();
2109	return VERR_EM_INTERPRETER;
2110	}
2111
2112	LogFlow(("emInterpretOrXorAnd %s %RGv %RX64 - %RX64 size %d (%d)\n", emGetMnemonic(pDis), pParam1, valpar1, valpar2, param2.size, param1.size));
2113
2114	/* Data read, emulate instruction. */
2115	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
2116
2117	LogFlow(("emInterpretOrXorAnd %s result %RX64\n", emGetMnemonic(pDis), valpar1));
2118
2119	/* Update guest's eflags and finish. */
2120	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2121	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2122
2123	/* And write it back */
2124	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2125	if (RT_SUCCESS(rc))
2126	{
2127	/* All done! */
2128	*pcbSize = param2.size;
2129	return VINF_SUCCESS;
2130	}
2131	#ifdef IN_RC
2132	}
2133	}
2134	#endif
2135	return VERR_EM_INTERPRETER;
2136	}
2137
2138
2139	#ifndef VBOX_COMPARE_IEM_AND_EM
2140	/**
2141	* LOCK XOR/OR/AND Emulation.
2142	*/
2143	static int emInterpretLockOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
2144	uint32_t *pcbSize, PFNEMULATELOCKPARAM3 pfnEmulate)
2145	{
2146	void *pvParam1;
2147	DISQPVPARAMVAL param1, param2;
2148	NOREF(pvFault);
2149
2150	#if HC_ARCH_BITS == 32
2151	Assert(pDis->Param1.cb <= 4);
2152	#endif
2153
2154	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2155	if(RT_FAILURE(rc))
2156	return VERR_EM_INTERPRETER;
2157
2158	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2159	if(RT_FAILURE(rc))
2160	return VERR_EM_INTERPRETER;
2161
2162	if (pDis->Param1.cb != pDis->Param2.cb)
2163	{
2164	AssertMsgReturn(pDis->Param1.cb >= pDis->Param2.cb, /* should never happen! */
2165	("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb),
2166	VERR_EM_INTERPRETER);
2167
2168	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2169	pDis->Param2.cb = pDis->Param1.cb;
2170	param2.size = param1.size;
2171	}
2172
2173	#ifdef IN_RC
2174	/* Safety check (in theory it could cross a page boundary and fault there though) */
2175	Assert( TRPMHasTrap(pVCpu)
2176	&& (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW));
2177	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
2178	#endif
2179
2180	/* Register and immediate data == DISQPV_TYPE_IMMEDIATE */
2181	AssertReturn(param2.type == DISQPV_TYPE_IMMEDIATE, VERR_EM_INTERPRETER);
2182	RTGCUINTREG ValPar2 = param2.val.val64;
2183
2184	/* The destination is always a virtual address */
2185	AssertReturn(param1.type == DISQPV_TYPE_ADDRESS, VERR_EM_INTERPRETER);
2186
2187	RTGCPTR GCPtrPar1 = param1.val.val64;
2188	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2189	PGMPAGEMAPLOCK Lock;
2190	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2191	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2192
2193	/* Try emulate it with a one-shot #PF handler in place. (RC) */
2194	Log2(("%s %RGv imm%d=%RX64\n", emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2195
2196	RTGCUINTREG32 eflags = 0;
2197	rc = pfnEmulate(pvParam1, ValPar2, pDis->Param2.cb, &eflags);
2198	PGMPhysReleasePageMappingLock(pVM, &Lock);
2199	if (RT_FAILURE(rc))
2200	{
2201	Log(("%s %RGv imm%d=%RX64-> emulation failed due to page fault!\n", emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2202	return VERR_EM_INTERPRETER;
2203	}
2204
2205	/* Update guest's eflags and finish. */
2206	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2207	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2208
2209	*pcbSize = param2.size;
2210	return VINF_SUCCESS;
2211	}
2212	#endif /* !VBOX_COMPARE_IEM_AND_EM */
2213
2214
2215	/**
2216	* ADD, ADC & SUB Emulation.
2217	*/
2218	static int emInterpretAddSub(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2219	PFNEMULATEPARAM3 pfnEmulate)
2220	{
2221	NOREF(pvFault);
2222	DISQPVPARAMVAL param1, param2;
2223	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2224	if(RT_FAILURE(rc))
2225	return VERR_EM_INTERPRETER;
2226
2227	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2228	if(RT_FAILURE(rc))
2229	return VERR_EM_INTERPRETER;
2230
2231	#ifdef IN_RC
2232	if (TRPMHasTrap(pVCpu))
2233	{
2234	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2235	{
2236	#endif
2237	RTGCPTR pParam1;
2238	uint64_t valpar1, valpar2;
2239
2240	if (pDis->Param1.cb != pDis->Param2.cb)
2241	{
2242	if (pDis->Param1.cb < pDis->Param2.cb)
2243	{
2244	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb)); /* should never happen! */
2245	return VERR_EM_INTERPRETER;
2246	}
2247	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2248	pDis->Param2.cb = pDis->Param1.cb;
2249	param2.size = param1.size;
2250	}
2251
2252	/* The destination is always a virtual address */
2253	if (param1.type == DISQPV_TYPE_ADDRESS)
2254	{
2255	pParam1 = (RTGCPTR)param1.val.val64;
2256	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2257	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2258	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2259	if (RT_FAILURE(rc))
2260	{
2261	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2262	return VERR_EM_INTERPRETER;
2263	}
2264	}
2265	else
2266	{
2267	#ifndef DEBUG_bird
2268	AssertFailed();
2269	#endif
2270	return VERR_EM_INTERPRETER;
2271	}
2272
2273	/* Register or immediate data */
2274	switch(param2.type)
2275	{
2276	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2277	valpar2 = param2.val.val64;
2278	break;
2279
2280	default:
2281	AssertFailed();
2282	return VERR_EM_INTERPRETER;
2283	}
2284
2285	/* Data read, emulate instruction. */
2286	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
2287
2288	/* Update guest's eflags and finish. */
2289	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2290	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2291
2292	/* And write it back */
2293	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2294	if (RT_SUCCESS(rc))
2295	{
2296	/* All done! */
2297	*pcbSize = param2.size;
2298	return VINF_SUCCESS;
2299	}
2300	#ifdef IN_RC
2301	}
2302	}
2303	#endif
2304	return VERR_EM_INTERPRETER;
2305	}
2306
2307
2308	/**
2309	* ADC Emulation.
2310	*/
2311	static int emInterpretAdc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2312	{
2313	if (pRegFrame->eflags.Bits.u1CF)
2314	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdcWithCarrySet);
2315	else
2316	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdd);
2317	}
2318
2319
2320	/**
2321	* BTR/C/S Emulation.
2322	*/
2323	static int emInterpretBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2324	PFNEMULATEPARAM2UINT32 pfnEmulate)
2325	{
2326	DISQPVPARAMVAL param1, param2;
2327	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2328	if(RT_FAILURE(rc))
2329	return VERR_EM_INTERPRETER;
2330
2331	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2332	if(RT_FAILURE(rc))
2333	return VERR_EM_INTERPRETER;
2334
2335	#ifdef IN_RC
2336	if (TRPMHasTrap(pVCpu))
2337	{
2338	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2339	{
2340	#endif
2341	RTGCPTR pParam1;
2342	uint64_t valpar1 = 0, valpar2;
2343	uint32_t eflags;
2344
2345	/* The destination is always a virtual address */
2346	if (param1.type != DISQPV_TYPE_ADDRESS)
2347	return VERR_EM_INTERPRETER;
2348
2349	pParam1 = (RTGCPTR)param1.val.val64;
2350	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2351
2352	/* Register or immediate data */
2353	switch(param2.type)
2354	{
2355	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2356	valpar2 = param2.val.val64;
2357	break;
2358
2359	default:
2360	AssertFailed();
2361	return VERR_EM_INTERPRETER;
2362	}
2363
2364	Log2(("emInterpret%s: pvFault=%RGv pParam1=%RGv val2=%x\n", emGetMnemonic(pDis), pvFault, pParam1, valpar2));
2365	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + valpar2/8);
2366	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)pParam1 & ~3) == pvFault, VERR_EM_INTERPRETER); NOREF(pvFault);
2367	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, 1);
2368	if (RT_FAILURE(rc))
2369	{
2370	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2371	return VERR_EM_INTERPRETER;
2372	}
2373
2374	Log2(("emInterpretBtx: val=%x\n", valpar1));
2375	/* Data read, emulate bit test instruction. */
2376	eflags = pfnEmulate(&valpar1, valpar2 & 0x7);
2377
2378	Log2(("emInterpretBtx: val=%x CF=%d\n", valpar1, !!(eflags & X86_EFL_CF)));
2379
2380	/* Update guest's eflags and finish. */
2381	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2382	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2383
2384	/* And write it back */
2385	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, 1);
2386	if (RT_SUCCESS(rc))
2387	{
2388	/* All done! */
2389	*pcbSize = 1;
2390	return VINF_SUCCESS;
2391	}
2392	#ifdef IN_RC
2393	}
2394	}
2395	#endif
2396	return VERR_EM_INTERPRETER;
2397	}
2398
2399
2400	#ifndef VBOX_COMPARE_IEM_AND_EM
2401	/**
2402	* LOCK BTR/C/S Emulation.
2403	*/
2404	static int emInterpretLockBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
2405	uint32_t *pcbSize, PFNEMULATELOCKPARAM2 pfnEmulate)
2406	{
2407	void *pvParam1;
2408
2409	DISQPVPARAMVAL param1, param2;
2410	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2411	if(RT_FAILURE(rc))
2412	return VERR_EM_INTERPRETER;
2413
2414	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2415	if(RT_FAILURE(rc))
2416	return VERR_EM_INTERPRETER;
2417
2418	/* The destination is always a virtual address */
2419	if (param1.type != DISQPV_TYPE_ADDRESS)
2420	return VERR_EM_INTERPRETER;
2421
2422	/* Register and immediate data == DISQPV_TYPE_IMMEDIATE */
2423	AssertReturn(param2.type == DISQPV_TYPE_IMMEDIATE, VERR_EM_INTERPRETER);
2424	uint64_t ValPar2 = param2.val.val64;
2425
2426	/* Adjust the parameters so what we're dealing with is a bit within the byte pointed to. */
2427	RTGCPTR GCPtrPar1 = param1.val.val64;
2428	GCPtrPar1 = (GCPtrPar1 + ValPar2 / 8);
2429	ValPar2 &= 7;
2430
2431	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2432	#ifdef IN_RC
2433	Assert(TRPMHasTrap(pVCpu));
2434	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)GCPtrPar1 & ~(RTGCUINTPTR)3) == pvFault, VERR_EM_INTERPRETER);
2435	#endif
2436
2437	PGMPAGEMAPLOCK Lock;
2438	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2439	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2440
2441	Log2(("emInterpretLockBitTest %s: pvFault=%RGv GCPtrPar1=%RGv imm=%RX64\n", emGetMnemonic(pDis), pvFault, GCPtrPar1, ValPar2));
2442	NOREF(pvFault);
2443
2444	/* Try emulate it with a one-shot #PF handler in place. (RC) */
2445	RTGCUINTREG32 eflags = 0;
2446	rc = pfnEmulate(pvParam1, ValPar2, &eflags);
2447	PGMPhysReleasePageMappingLock(pVM, &Lock);
2448	if (RT_FAILURE(rc))
2449	{
2450	Log(("emInterpretLockBitTest %s: %RGv imm%d=%RX64 -> emulation failed due to page fault!\n",
2451	emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2452	return VERR_EM_INTERPRETER;
2453	}
2454
2455	Log2(("emInterpretLockBitTest %s: GCPtrPar1=%RGv imm=%RX64 CF=%d\n", emGetMnemonic(pDis), GCPtrPar1, ValPar2, !!(eflags & X86_EFL_CF)));
2456
2457	/* Update guest's eflags and finish. */
2458	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2459	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2460
2461	*pcbSize = 1;
2462	return VINF_SUCCESS;
2463	}
2464	#endif /* !VBOX_COMPARE_IEM_AND_EM */
2465
2466
2467	/**
2468	* MOV emulation.
2469	*/
2470	static int emInterpretMov(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2471	{
2472	NOREF(pvFault);
2473	DISQPVPARAMVAL param1, param2;
2474	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2475	if(RT_FAILURE(rc))
2476	return VERR_EM_INTERPRETER;
2477
2478	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2479	if(RT_FAILURE(rc))
2480	return VERR_EM_INTERPRETER;
2481
2482	/* If destination is a segment register, punt. We can't handle it here.
2483	* NB: Source can be a register and still trigger a #PF!
2484	*/
2485	if (RT_UNLIKELY(pDis->Param1.fUse == DISUSE_REG_SEG))
2486	return VERR_EM_INTERPRETER;
2487
2488	if (param1.type == DISQPV_TYPE_ADDRESS)
2489	{
2490	RTGCPTR pDest;
2491	uint64_t val64;
2492
2493	switch(param1.type)
2494	{
2495	case DISQPV_TYPE_IMMEDIATE:
2496	if(!(param1.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
2497	return VERR_EM_INTERPRETER;
2498	/* fallthru */
2499
2500	case DISQPV_TYPE_ADDRESS:
2501	pDest = (RTGCPTR)param1.val.val64;
2502	pDest = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pDest);
2503	break;
2504
2505	default:
2506	AssertFailed();
2507	return VERR_EM_INTERPRETER;
2508	}
2509
2510	switch(param2.type)
2511	{
2512	case DISQPV_TYPE_IMMEDIATE: /* register type is translated to this one too */
2513	val64 = param2.val.val64;
2514	break;
2515
2516	default:
2517	Log(("emInterpretMov: unexpected type=%d rip=%RGv\n", param2.type, (RTGCPTR)pRegFrame->rip));
2518	return VERR_EM_INTERPRETER;
2519	}
2520	#ifdef LOG_ENABLED
2521	if (pDis->uCpuMode == DISCPUMODE_64BIT)
2522	LogFlow(("EMInterpretInstruction at %RGv: OP_MOV %RGv <- %RX64 (%d) &val64=%RHv\n", (RTGCPTR)pRegFrame->rip, pDest, val64, param2.size, &val64));
2523	else
2524	LogFlow(("EMInterpretInstruction at %08RX64: OP_MOV %RGv <- %08X (%d) &val64=%RHv\n", pRegFrame->rip, pDest, (uint32_t)val64, param2.size, &val64));
2525	#endif
2526
2527	Assert(param2.size <= 8 && param2.size > 0);
2528	EM_ASSERT_FAULT_RETURN(pDest == pvFault, VERR_EM_INTERPRETER);
2529	rc = emRamWrite(pVM, pVCpu, pRegFrame, pDest, &val64, param2.size);
2530	if (RT_FAILURE(rc))
2531	return VERR_EM_INTERPRETER;
2532
2533	*pcbSize = param2.size;
2534	}
2535	#if defined(IN_RC) && defined(VBOX_WITH_RAW_RING1)
2536	/* mov xx, cs instruction is dangerous in raw mode and replaced by an 'int3' by csam/patm. */
2537	else if ( param1.type == DISQPV_TYPE_REGISTER
2538	&& param2.type == DISQPV_TYPE_REGISTER)
2539	{
2540	AssertReturn((pDis->Param1.fUse & (DISUSE_REG_GEN8\|DISUSE_REG_GEN16\|DISUSE_REG_GEN32)), VERR_EM_INTERPRETER);
2541	AssertReturn(pDis->Param2.fUse == DISUSE_REG_SEG, VERR_EM_INTERPRETER);
2542	AssertReturn(pDis->Param2.Base.idxSegReg == DISSELREG_CS, VERR_EM_INTERPRETER);
2543
2544	uint32_t u32Cpl = CPUMRCGetGuestCPL(pVCpu, pRegFrame);
2545	uint32_t uValCS = (pRegFrame->cs.Sel & ~X86_SEL_RPL) \| u32Cpl;
2546
2547	Log(("EMInterpretInstruction: OP_MOV cs=%x->%x\n", pRegFrame->cs.Sel, uValCS));
2548	switch (param1.size)
2549	{
2550	case 1: rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t) uValCS); break;
2551	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)uValCS); break;
2552	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)uValCS); break;
2553	default:
2554	AssertFailed();
2555	return VERR_EM_INTERPRETER;
2556	}
2557	AssertRCReturn(rc, rc);
2558	}
2559	#endif
2560	else
2561	{ /* read fault */
2562	RTGCPTR pSrc;
2563	uint64_t val64;
2564
2565	/* Source */
2566	switch(param2.type)
2567	{
2568	case DISQPV_TYPE_IMMEDIATE:
2569	if(!(param2.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
2570	return VERR_EM_INTERPRETER;
2571	/* fallthru */
2572
2573	case DISQPV_TYPE_ADDRESS:
2574	pSrc = (RTGCPTR)param2.val.val64;
2575	pSrc = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param2, pSrc);
2576	break;
2577
2578	default:
2579	return VERR_EM_INTERPRETER;
2580	}
2581
2582	Assert(param1.size <= 8 && param1.size > 0);
2583	EM_ASSERT_FAULT_RETURN(pSrc == pvFault, VERR_EM_INTERPRETER);
2584	rc = emRamRead(pVM, pVCpu, pRegFrame, &val64, pSrc, param1.size);
2585	if (RT_FAILURE(rc))
2586	return VERR_EM_INTERPRETER;
2587
2588	/* Destination */
2589	switch(param1.type)
2590	{
2591	case DISQPV_TYPE_REGISTER:
2592	switch(param1.size)
2593	{
2594	case 1: rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t) val64); break;
2595	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)val64); break;
2596	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)val64); break;
2597	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param1.Base.idxGenReg, val64); break;
2598	default:
2599	return VERR_EM_INTERPRETER;
2600	}
2601	if (RT_FAILURE(rc))
2602	return rc;
2603	break;
2604
2605	default:
2606	return VERR_EM_INTERPRETER;
2607	}
2608	#ifdef LOG_ENABLED
2609	if (pDis->uCpuMode == DISCPUMODE_64BIT)
2610	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %RX64 (%d)\n", pSrc, val64, param1.size));
2611	else
2612	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %08X (%d)\n", pSrc, (uint32_t)val64, param1.size));
2613	#endif
2614	}
2615	return VINF_SUCCESS;
2616	}
2617
2618
2619	#ifndef IN_RC
2620	/**
2621	* [REP] STOSWD emulation
2622	*/
2623	static int emInterpretStosWD(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2624	{
2625	int rc;
2626	RTGCPTR GCDest, GCOffset;
2627	uint32_t cbSize;
2628	uint64_t cTransfers;
2629	int offIncrement;
2630	NOREF(pvFault);
2631
2632	/* Don't support any but these three prefix bytes. */
2633	if ((pDis->fPrefix & ~(DISPREFIX_ADDRSIZE\|DISPREFIX_OPSIZE\|DISPREFIX_REP\|DISPREFIX_REX)))
2634	return VERR_EM_INTERPRETER;
2635
2636	switch (pDis->uAddrMode)
2637	{
2638	case DISCPUMODE_16BIT:
2639	GCOffset = pRegFrame->di;
2640	cTransfers = pRegFrame->cx;
2641	break;
2642	case DISCPUMODE_32BIT:
2643	GCOffset = pRegFrame->edi;
2644	cTransfers = pRegFrame->ecx;
2645	break;
2646	case DISCPUMODE_64BIT:
2647	GCOffset = pRegFrame->rdi;
2648	cTransfers = pRegFrame->rcx;
2649	break;
2650	default:
2651	AssertFailed();
2652	return VERR_EM_INTERPRETER;
2653	}
2654
2655	GCDest = SELMToFlat(pVM, DISSELREG_ES, pRegFrame, GCOffset);
2656	switch (pDis->uOpMode)
2657	{
2658	case DISCPUMODE_16BIT:
2659	cbSize = 2;
2660	break;
2661	case DISCPUMODE_32BIT:
2662	cbSize = 4;
2663	break;
2664	case DISCPUMODE_64BIT:
2665	cbSize = 8;
2666	break;
2667	default:
2668	AssertFailed();
2669	return VERR_EM_INTERPRETER;
2670	}
2671
2672	offIncrement = pRegFrame->eflags.Bits.u1DF ? -(signed)cbSize : (signed)cbSize;
2673
2674	if (!(pDis->fPrefix & DISPREFIX_REP))
2675	{
2676	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d\n", pRegFrame->es.Sel, GCOffset, GCDest, cbSize));
2677
2678	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
2679	if (RT_FAILURE(rc))
2680	return VERR_EM_INTERPRETER;
2681	Assert(rc == VINF_SUCCESS);
2682
2683	/* Update (e/r)di. */
2684	switch (pDis->uAddrMode)
2685	{
2686	case DISCPUMODE_16BIT:
2687	pRegFrame->di += offIncrement;
2688	break;
2689	case DISCPUMODE_32BIT:
2690	pRegFrame->edi += offIncrement;
2691	break;
2692	case DISCPUMODE_64BIT:
2693	pRegFrame->rdi += offIncrement;
2694	break;
2695	default:
2696	AssertFailed();
2697	return VERR_EM_INTERPRETER;
2698	}
2699
2700	}
2701	else
2702	{
2703	if (!cTransfers)
2704	return VINF_SUCCESS;
2705
2706	/*
2707	* Do not try emulate cross page stuff here because we don't know what might
2708	* be waiting for us on the subsequent pages. The caller has only asked us to
2709	* ignore access handlers fro the current page.
2710	* This also fends off big stores which would quickly kill PGMR0DynMap.
2711	*/
2712	if ( cbSize > PAGE_SIZE
2713	\|\| cTransfers > PAGE_SIZE
2714	\|\| (GCDest >> PAGE_SHIFT) != ((GCDest + offIncrement * cTransfers) >> PAGE_SHIFT))
2715	{
2716	Log(("STOSWD is crosses pages, chicken out to the recompiler; GCDest=%RGv cbSize=%#x offIncrement=%d cTransfers=%#x\n",
2717	GCDest, cbSize, offIncrement, cTransfers));
2718	return VERR_EM_INTERPRETER;
2719	}
2720
2721	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d cTransfers=%x DF=%d\n", pRegFrame->es.Sel, GCOffset, GCDest, cbSize, cTransfers, pRegFrame->eflags.Bits.u1DF));
2722	/* Access verification first; we currently can't recover properly from traps inside this instruction */
2723	rc = PGMVerifyAccess(pVCpu, GCDest - ((offIncrement > 0) ? 0 : ((cTransfers-1) * cbSize)),
2724	cTransfers * cbSize,
2725	X86_PTE_RW \| (CPUMGetGuestCPL(pVCpu) == 3 ? X86_PTE_US : 0));
2726	if (rc != VINF_SUCCESS)
2727	{
2728	Log(("STOSWD will generate a trap -> recompiler, rc=%d\n", rc));
2729	return VERR_EM_INTERPRETER;
2730	}
2731
2732	/* REP case */
2733	while (cTransfers)
2734	{
2735	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
2736	if (RT_FAILURE(rc))
2737	{
2738	rc = VERR_EM_INTERPRETER;
2739	break;
2740	}
2741
2742	Assert(rc == VINF_SUCCESS);
2743	GCOffset += offIncrement;
2744	GCDest += offIncrement;
2745	cTransfers--;
2746	}
2747
2748	/* Update the registers. */
2749	switch (pDis->uAddrMode)
2750	{
2751	case DISCPUMODE_16BIT:
2752	pRegFrame->di = GCOffset;
2753	pRegFrame->cx = cTransfers;
2754	break;
2755	case DISCPUMODE_32BIT:
2756	pRegFrame->edi = GCOffset;
2757	pRegFrame->ecx = cTransfers;
2758	break;
2759	case DISCPUMODE_64BIT:
2760	pRegFrame->rdi = GCOffset;
2761	pRegFrame->rcx = cTransfers;
2762	break;
2763	default:
2764	AssertFailed();
2765	return VERR_EM_INTERPRETER;
2766	}
2767	}
2768
2769	*pcbSize = cbSize;
2770	return rc;
2771	}
2772	#endif /* !IN_RC */
2773
2774
2775	/**
2776	* [LOCK] CMPXCHG emulation.
2777	*/
2778	static int emInterpretCmpXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2779	{
2780	DISQPVPARAMVAL param1, param2;
2781	NOREF(pvFault);
2782
2783	#if HC_ARCH_BITS == 32
2784	Assert(pDis->Param1.cb <= 4);
2785	#endif
2786
2787	/* Source to make DISQueryParamVal read the register value - ugly hack */
2788	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
2789	if(RT_FAILURE(rc))
2790	return VERR_EM_INTERPRETER;
2791
2792	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2793	if(RT_FAILURE(rc))
2794	return VERR_EM_INTERPRETER;
2795
2796	uint64_t valpar;
2797	switch(param2.type)
2798	{
2799	case DISQPV_TYPE_IMMEDIATE: /* register actually */
2800	valpar = param2.val.val64;
2801	break;
2802
2803	default:
2804	return VERR_EM_INTERPRETER;
2805	}
2806
2807	PGMPAGEMAPLOCK Lock;
2808	RTGCPTR GCPtrPar1;
2809	void *pvParam1;
2810	uint64_t eflags;
2811
2812	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
2813	switch(param1.type)
2814	{
2815	case DISQPV_TYPE_ADDRESS:
2816	GCPtrPar1 = param1.val.val64;
2817	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2818
2819	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2820	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2821	break;
2822
2823	default:
2824	return VERR_EM_INTERPRETER;
2825	}
2826
2827	LogFlow(("%s %RGv rax=%RX64 %RX64\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar));
2828
2829	#ifndef VBOX_COMPARE_IEM_AND_EM
2830	if (pDis->fPrefix & DISPREFIX_LOCK)
2831	eflags = EMEmulateLockCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->Param2.cb);
2832	else
2833	eflags = EMEmulateCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->Param2.cb);
2834	#else /* VBOX_COMPARE_IEM_AND_EM */
2835	uint64_t u64;
2836	switch (pDis->Param2.cb)
2837	{
2838	case 1: u64 = (uint8_t )pvParam1; break;
2839	case 2: u64 = (uint16_t )pvParam1; break;
2840	case 4: u64 = (uint32_t )pvParam1; break;
2841	default:
2842	case 8: u64 = (uint64_t )pvParam1; break;
2843	}
2844	eflags = EMEmulateCmpXchg(&u64, &pRegFrame->rax, valpar, pDis->Param2.cb);
2845	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, pDis->Param2.cb); AssertRCSuccess(rc2);
2846	#endif /* VBOX_COMPARE_IEM_AND_EM */
2847
2848	LogFlow(("%s %RGv rax=%RX64 %RX64 ZF=%d\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar, !!(eflags & X86_EFL_ZF)));
2849
2850	/* Update guest's eflags and finish. */
2851	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2852	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2853
2854	*pcbSize = param2.size;
2855	PGMPhysReleasePageMappingLock(pVM, &Lock);
2856	return VINF_SUCCESS;
2857	}
2858
2859
2860	/**
2861	* [LOCK] CMPXCHG8B emulation.
2862	*/
2863	static int emInterpretCmpXchg8b(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2864	{
2865	DISQPVPARAMVAL param1;
2866	NOREF(pvFault);
2867
2868	/* Source to make DISQueryParamVal read the register value - ugly hack */
2869	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
2870	if(RT_FAILURE(rc))
2871	return VERR_EM_INTERPRETER;
2872
2873	RTGCPTR GCPtrPar1;
2874	void *pvParam1;
2875	uint64_t eflags;
2876	PGMPAGEMAPLOCK Lock;
2877
2878	AssertReturn(pDis->Param1.cb == 8, VERR_EM_INTERPRETER);
2879	switch(param1.type)
2880	{
2881	case DISQPV_TYPE_ADDRESS:
2882	GCPtrPar1 = param1.val.val64;
2883	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2884
2885	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2886	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2887	break;
2888
2889	default:
2890	return VERR_EM_INTERPRETER;
2891	}
2892
2893	LogFlow(("%s %RGv=%p eax=%08x\n", emGetMnemonic(pDis), GCPtrPar1, pvParam1, pRegFrame->eax));
2894
2895	#ifndef VBOX_COMPARE_IEM_AND_EM
2896	if (pDis->fPrefix & DISPREFIX_LOCK)
2897	eflags = EMEmulateLockCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
2898	else
2899	eflags = EMEmulateCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
2900	#else /* VBOX_COMPARE_IEM_AND_EM */
2901	uint64_t u64 = (uint64_t )pvParam1;
2902	eflags = EMEmulateCmpXchg8b(&u64, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
2903	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, sizeof(u64)); AssertRCSuccess(rc2);
2904	#endif /* VBOX_COMPARE_IEM_AND_EM */
2905
2906	LogFlow(("%s %RGv=%p eax=%08x ZF=%d\n", emGetMnemonic(pDis), GCPtrPar1, pvParam1, pRegFrame->eax, !!(eflags & X86_EFL_ZF)));
2907
2908	/* Update guest's eflags and finish; note that only ZF is affected. */
2909	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_ZF))
2910	\| (eflags & (X86_EFL_ZF));
2911
2912	*pcbSize = 8;
2913	PGMPhysReleasePageMappingLock(pVM, &Lock);
2914	return VINF_SUCCESS;
2915	}
2916
2917
2918	#ifdef IN_RC /** @todo test+enable for HM as well. */
2919	/**
2920	* [LOCK] XADD emulation.
2921	*/
2922	static int emInterpretXAdd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2923	{
2924	Assert(pDis->uCpuMode != DISCPUMODE_64BIT); /** @todo check */
2925	DISQPVPARAMVAL param1;
2926	void *pvParamReg2;
2927	size_t cbParamReg2;
2928	NOREF(pvFault);
2929
2930	/* Source to make DISQueryParamVal read the register value - ugly hack */
2931	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
2932	if(RT_FAILURE(rc))
2933	return VERR_EM_INTERPRETER;
2934
2935	rc = DISQueryParamRegPtr(pRegFrame, pDis, &pDis->Param2, &pvParamReg2, &cbParamReg2);
2936	Assert(cbParamReg2 <= 4);
2937	if(RT_FAILURE(rc))
2938	return VERR_EM_INTERPRETER;
2939
2940	#ifdef IN_RC
2941	if (TRPMHasTrap(pVCpu))
2942	{
2943	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2944	{
2945	#endif
2946	RTGCPTR GCPtrPar1;
2947	void *pvParam1;
2948	uint32_t eflags;
2949	PGMPAGEMAPLOCK Lock;
2950
2951	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
2952	switch(param1.type)
2953	{
2954	case DISQPV_TYPE_ADDRESS:
2955	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, (RTRCUINTPTR)param1.val.val64);
2956	#ifdef IN_RC
2957	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
2958	#endif
2959
2960	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2961	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2962	break;
2963
2964	default:
2965	return VERR_EM_INTERPRETER;
2966	}
2967
2968	LogFlow(("XAdd %RGv=%p reg=%08llx\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2));
2969
2970	#ifndef VBOX_COMPARE_IEM_AND_EM
2971	if (pDis->fPrefix & DISPREFIX_LOCK)
2972	eflags = EMEmulateLockXAdd(pvParam1, pvParamReg2, cbParamReg2);
2973	else
2974	eflags = EMEmulateXAdd(pvParam1, pvParamReg2, cbParamReg2);
2975	#else /* VBOX_COMPARE_IEM_AND_EM */
2976	uint64_t u64;
2977	switch (cbParamReg2)
2978	{
2979	case 1: u64 = (uint8_t )pvParam1; break;
2980	case 2: u64 = (uint16_t )pvParam1; break;
2981	case 4: u64 = (uint32_t )pvParam1; break;
2982	default:
2983	case 8: u64 = (uint64_t )pvParam1; break;
2984	}
2985	eflags = EMEmulateXAdd(&u64, pvParamReg2, cbParamReg2);
2986	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, pDis->Param2.cb); AssertRCSuccess(rc2);
2987	#endif /* VBOX_COMPARE_IEM_AND_EM */
2988
2989	LogFlow(("XAdd %RGv=%p reg=%08llx ZF=%d\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2, !!(eflags & X86_EFL_ZF) ));
2990
2991	/* Update guest's eflags and finish. */
2992	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2993	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2994
2995	*pcbSize = cbParamReg2;
2996	PGMPhysReleasePageMappingLock(pVM, &Lock);
2997	return VINF_SUCCESS;
2998	#ifdef IN_RC
2999	}
3000	}
3001
3002	return VERR_EM_INTERPRETER;
3003	#endif
3004	}
3005	#endif /* IN_RC */
3006
3007
3008	/**
3009	* WBINVD Emulation.
3010	*/
3011	static int emInterpretWbInvd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3012	{
3013	/* Nothing to do. */
3014	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3015	return VINF_SUCCESS;
3016	}
3017
3018
3019	/**
3020	* INVLPG Emulation.
3021	*/
3022	static VBOXSTRICTRC emInterpretInvlPg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3023	{
3024	DISQPVPARAMVAL param1;
3025	RTGCPTR addr;
3026	NOREF(pvFault); NOREF(pVM); NOREF(pcbSize);
3027
3028	VBOXSTRICTRC rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3029	if(RT_FAILURE(rc))
3030	return VERR_EM_INTERPRETER;
3031
3032	switch(param1.type)
3033	{
3034	case DISQPV_TYPE_IMMEDIATE:
3035	case DISQPV_TYPE_ADDRESS:
3036	if(!(param1.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
3037	return VERR_EM_INTERPRETER;
3038	addr = (RTGCPTR)param1.val.val64;
3039	break;
3040
3041	default:
3042	return VERR_EM_INTERPRETER;
3043	}
3044
3045	/** @todo is addr always a flat linear address or ds based
3046	* (in absence of segment override prefixes)????
3047	*/
3048	#ifdef IN_RC
3049	LogFlow(("RC: EMULATE: invlpg %RGv\n", addr));
3050	#endif
3051	rc = PGMInvalidatePage(pVCpu, addr);
3052	if ( rc == VINF_SUCCESS
3053	\|\| rc == VINF_PGM_SYNC_CR3 /* we can rely on the FF */)
3054	return VINF_SUCCESS;
3055	AssertMsgReturn(rc == VINF_EM_RAW_EMULATE_INSTR,
3056	("%Rrc addr=%RGv\n", VBOXSTRICTRC_VAL(rc), addr),
3057	VERR_EM_INTERPRETER);
3058	return rc;
3059	}
3060
3061	/** @todo change all these EMInterpretXXX methods to VBOXSTRICTRC. */
3062
3063	/**
3064	* CPUID Emulation.
3065	*/
3066	static int emInterpretCpuId(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3067	{
3068	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3069	int rc = EMInterpretCpuId(pVM, pVCpu, pRegFrame);
3070	return rc;
3071	}
3072
3073
3074	/**
3075	* CLTS Emulation.
3076	*/
3077	static int emInterpretClts(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3078	{
3079	NOREF(pVM); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3080
3081	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
3082	if (!(cr0 & X86_CR0_TS))
3083	return VINF_SUCCESS;
3084	return CPUMSetGuestCR0(pVCpu, cr0 & ~X86_CR0_TS);
3085	}
3086
3087
3088	/**
3089	* Update CRx.
3090	*
3091	* @returns VBox status code.
3092	* @param pVM The cross context VM structure.
3093	* @param pVCpu The cross context virtual CPU structure.
3094	* @param pRegFrame The register frame.
3095	* @param DestRegCrx CRx register index (DISUSE_REG_CR*)
3096	* @param val New CRx value
3097	*
3098	*/
3099	static int emUpdateCRx(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint64_t val)
3100	{
3101	uint64_t oldval;
3102	uint64_t msrEFER;
3103	uint32_t fValid;
3104	int rc, rc2;
3105	NOREF(pVM);
3106
3107	/** @todo Clean up this mess. */
3108	LogFlow(("emInterpretCRxWrite at %RGv CR%d <- %RX64\n", (RTGCPTR)pRegFrame->rip, DestRegCrx, val));
3109	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3110	switch (DestRegCrx)
3111	{
3112	case DISCREG_CR0:
3113	oldval = CPUMGetGuestCR0(pVCpu);
3114	#ifdef IN_RC
3115	/* CR0.WP and CR0.AM changes require a reschedule run in ring 3. */
3116	if ( (val & (X86_CR0_WP \| X86_CR0_AM))
3117	!= (oldval & (X86_CR0_WP \| X86_CR0_AM)))
3118	return VERR_EM_INTERPRETER;
3119	#endif
3120	rc = VINF_SUCCESS;
3121	#if !defined(VBOX_COMPARE_IEM_AND_EM) \|\| !defined(VBOX_COMPARE_IEM_LAST)
3122	CPUMSetGuestCR0(pVCpu, val);
3123	#else
3124	CPUMQueryGuestCtxPtr(pVCpu)->cr0 = val \| X86_CR0_ET;
3125	#endif
3126	val = CPUMGetGuestCR0(pVCpu);
3127	if ( (oldval & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE))
3128	!= (val & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE)))
3129	{
3130	/* global flush */
3131	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
3132	AssertRCReturn(rc, rc);
3133	}
3134
3135	/* Deal with long mode enabling/disabling. */
3136	msrEFER = CPUMGetGuestEFER(pVCpu);
3137	if (msrEFER & MSR_K6_EFER_LME)
3138	{
3139	if ( !(oldval & X86_CR0_PG)
3140	&& (val & X86_CR0_PG))
3141	{
3142	/* Illegal to have an active 64 bits CS selector (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
3143	if (pRegFrame->cs.Attr.n.u1Long)
3144	{
3145	AssertMsgFailed(("Illegal enabling of paging with CS.u1Long = 1!!\n"));
3146	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3147	}
3148
3149	/* Illegal to switch to long mode before activating PAE first (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
3150	if (!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PAE))
3151	{
3152	AssertMsgFailed(("Illegal enabling of paging with PAE disabled!!\n"));
3153	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3154	}
3155	msrEFER \|= MSR_K6_EFER_LMA;
3156	}
3157	else
3158	if ( (oldval & X86_CR0_PG)
3159	&& !(val & X86_CR0_PG))
3160	{
3161	msrEFER &= ~MSR_K6_EFER_LMA;
3162	/** @todo Do we need to cut off rip here? High dword of rip is undefined, so it shouldn't really matter. */
3163	}
3164	CPUMSetGuestEFER(pVCpu, msrEFER);
3165	}
3166	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
3167	return rc2 == VINF_SUCCESS ? rc : rc2;
3168
3169	case DISCREG_CR2:
3170	rc = CPUMSetGuestCR2(pVCpu, val); AssertRC(rc);
3171	return VINF_SUCCESS;
3172
3173	case DISCREG_CR3:
3174	/* Reloading the current CR3 means the guest just wants to flush the TLBs */
3175	rc = CPUMSetGuestCR3(pVCpu, val); AssertRC(rc);
3176	if (CPUMGetGuestCR0(pVCpu) & X86_CR0_PG)
3177	{
3178	/* flush */
3179	rc = PGMFlushTLB(pVCpu, val, !(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE));
3180	AssertRC(rc);
3181	}
3182	return rc;
3183
3184	case DISCREG_CR4:
3185	oldval = CPUMGetGuestCR4(pVCpu);
3186	rc = CPUMSetGuestCR4(pVCpu, val); AssertRC(rc);
3187	val = CPUMGetGuestCR4(pVCpu);
3188
3189	/* Illegal to disable PAE when long mode is active. (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
3190	msrEFER = CPUMGetGuestEFER(pVCpu);
3191	if ( (msrEFER & MSR_K6_EFER_LMA)
3192	&& (oldval & X86_CR4_PAE)
3193	&& !(val & X86_CR4_PAE))
3194	{
3195	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3196	}
3197
3198	/* From IEM iemCImpl_load_CrX. */
3199	/** @todo Check guest CPUID bits for determining corresponding valid bits. */
3200	fValid = X86_CR4_VME \| X86_CR4_PVI
3201	\| X86_CR4_TSD \| X86_CR4_DE
3202	\| X86_CR4_PSE \| X86_CR4_PAE
3203	\| X86_CR4_MCE \| X86_CR4_PGE
3204	\| X86_CR4_PCE \| X86_CR4_OSFXSR
3205	\| X86_CR4_OSXMMEEXCPT;
3206	//if (xxx)
3207	// fValid \|= X86_CR4_VMXE;
3208	//if (xxx)
3209	// fValid \|= X86_CR4_OSXSAVE;
3210	if (val & ~(uint64_t)fValid)
3211	{
3212	Log(("Trying to set reserved CR4 bits: NewCR4=%#llx InvalidBits=%#llx\n", val, val & ~(uint64_t)fValid));
3213	return VERR_EM_INTERPRETER; /** @todo generate \#GP(0) */
3214	}
3215
3216	rc = VINF_SUCCESS;
3217	if ( (oldval & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE))
3218	!= (val & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE)))
3219	{
3220	/* global flush */
3221	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
3222	AssertRCReturn(rc, rc);
3223	}
3224
3225	/* Feeling extremely lazy. */
3226	# ifdef IN_RC
3227	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))
3228	!= (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)))
3229	{
3230	Log(("emInterpretMovCRx: CR4: %#RX64->%#RX64 => R3\n", oldval, val));
3231	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
3232	}
3233	# endif
3234	# ifdef VBOX_WITH_RAW_MODE
3235	if (((val ^ oldval) & X86_CR4_VME) && !HMIsEnabled(pVM))
3236	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
3237	# endif
3238
3239	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
3240	return rc2 == VINF_SUCCESS ? rc : rc2;
3241
3242	case DISCREG_CR8:
3243	return PDMApicSetTPR(pVCpu, val << 4); /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */
3244
3245	default:
3246	AssertFailed();
3247	case DISCREG_CR1: /* illegal op */
3248	break;
3249	}
3250	return VERR_EM_INTERPRETER;
3251	}
3252
3253
3254	/**
3255	* LMSW Emulation.
3256	*/
3257	static int emInterpretLmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3258	{
3259	DISQPVPARAMVAL param1;
3260	uint32_t val;
3261	NOREF(pvFault); NOREF(pcbSize);
3262	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3263
3264	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3265	if(RT_FAILURE(rc))
3266	return VERR_EM_INTERPRETER;
3267
3268	switch(param1.type)
3269	{
3270	case DISQPV_TYPE_IMMEDIATE:
3271	case DISQPV_TYPE_ADDRESS:
3272	if(!(param1.flags & DISQPV_FLAG_16))
3273	return VERR_EM_INTERPRETER;
3274	val = param1.val.val32;
3275	break;
3276
3277	default:
3278	return VERR_EM_INTERPRETER;
3279	}
3280
3281	LogFlow(("emInterpretLmsw %x\n", val));
3282	uint64_t OldCr0 = CPUMGetGuestCR0(pVCpu);
3283
3284	/* Only PE, MP, EM and TS can be changed; note that PE can't be cleared by this instruction. */
3285	uint64_t NewCr0 = ( OldCr0 & ~( X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS))
3286	\| (val & (X86_CR0_PE \| X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS));
3287
3288	return emUpdateCRx(pVM, pVCpu, pRegFrame, DISCREG_CR0, NewCr0);
3289
3290	}
3291
3292	#ifdef EM_EMULATE_SMSW
3293	/**
3294	* SMSW Emulation.
3295	*/
3296	static int emInterpretSmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3297	{
3298	NOREF(pvFault); NOREF(pcbSize);
3299	DISQPVPARAMVAL param1;
3300	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
3301
3302	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3303	if(RT_FAILURE(rc))
3304	return VERR_EM_INTERPRETER;
3305
3306	switch(param1.type)
3307	{
3308	case DISQPV_TYPE_IMMEDIATE:
3309	if(param1.size != sizeof(uint16_t))
3310	return VERR_EM_INTERPRETER;
3311	LogFlow(("emInterpretSmsw %d <- cr0 (%x)\n", pDis->Param1.Base.idxGenReg, cr0));
3312	rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, cr0);
3313	break;
3314
3315	case DISQPV_TYPE_ADDRESS:
3316	{
3317	RTGCPTR pParam1;
3318
3319	/* Actually forced to 16 bits regardless of the operand size. */
3320	if(param1.size != sizeof(uint16_t))
3321	return VERR_EM_INTERPRETER;
3322
3323	pParam1 = (RTGCPTR)param1.val.val64;
3324	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
3325	LogFlow(("emInterpretSmsw %RGv <- cr0 (%x)\n", pParam1, cr0));
3326
3327	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &cr0, sizeof(uint16_t));
3328	if (RT_FAILURE(rc))
3329	{
3330	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
3331	return VERR_EM_INTERPRETER;
3332	}
3333	break;
3334	}
3335
3336	default:
3337	return VERR_EM_INTERPRETER;
3338	}
3339
3340	LogFlow(("emInterpretSmsw %x\n", cr0));
3341	return rc;
3342	}
3343	#endif
3344
3345
3346	/**
3347	* Interpret CRx read.
3348	*
3349	* @returns VBox status code.
3350	* @param pVM The cross context VM structure.
3351	* @param pVCpu The cross context virtual CPU structure.
3352	* @param pRegFrame The register frame.
3353	* @param DestRegGen General purpose register index (USE_REG_E**))
3354	* @param SrcRegCrx CRx register index (DISUSE_REG_CR*)
3355	*
3356	*/
3357	static int emInterpretCRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegCrx)
3358	{
3359	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3360	uint64_t val64;
3361	int rc = CPUMGetGuestCRx(pVCpu, SrcRegCrx, &val64);
3362	AssertMsgRCReturn(rc, ("CPUMGetGuestCRx %d failed\n", SrcRegCrx), VERR_EM_INTERPRETER);
3363	NOREF(pVM);
3364
3365	if (CPUMIsGuestIn64BitCode(pVCpu))
3366	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
3367	else
3368	rc = DISWriteReg32(pRegFrame, DestRegGen, val64);
3369
3370	if (RT_SUCCESS(rc))
3371	{
3372	LogFlow(("MOV_CR: gen32=%d CR=%d val=%RX64\n", DestRegGen, SrcRegCrx, val64));
3373	return VINF_SUCCESS;
3374	}
3375	return VERR_EM_INTERPRETER;
3376	}
3377
3378
3379	/**
3380	* Interpret CRx write.
3381	*
3382	* @returns VBox status code.
3383	* @param pVM The cross context VM structure.
3384	* @param pVCpu The cross context virtual CPU structure.
3385	* @param pRegFrame The register frame.
3386	* @param DestRegCrx CRx register index (DISUSE_REG_CR*)
3387	* @param SrcRegGen General purpose register index (USE_REG_E**))
3388	*
3389	*/
3390	static int emInterpretCRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint32_t SrcRegGen)
3391	{
3392	uint64_t val;
3393	int rc;
3394	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3395
3396	if (CPUMIsGuestIn64BitCode(pVCpu))
3397	rc = DISFetchReg64(pRegFrame, SrcRegGen, &val);
3398	else
3399	{
3400	uint32_t val32;
3401	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
3402	val = val32;
3403	}
3404
3405	if (RT_SUCCESS(rc))
3406	return emUpdateCRx(pVM, pVCpu, pRegFrame, DestRegCrx, val);
3407
3408	return VERR_EM_INTERPRETER;
3409	}
3410
3411
3412	/**
3413	* MOV CRx
3414	*/
3415	static int emInterpretMovCRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3416	{
3417	NOREF(pvFault); NOREF(pcbSize);
3418	if ((pDis->Param1.fUse == DISUSE_REG_GEN32 \|\| pDis->Param1.fUse == DISUSE_REG_GEN64) && pDis->Param2.fUse == DISUSE_REG_CR)
3419	return emInterpretCRxRead(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxGenReg, pDis->Param2.Base.idxCtrlReg);
3420
3421	if (pDis->Param1.fUse == DISUSE_REG_CR && (pDis->Param2.fUse == DISUSE_REG_GEN32 \|\| pDis->Param2.fUse == DISUSE_REG_GEN64))
3422	return emInterpretCRxWrite(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxCtrlReg, pDis->Param2.Base.idxGenReg);
3423
3424	AssertMsgFailedReturn(("Unexpected control register move\n"), VERR_EM_INTERPRETER);
3425	}
3426
3427
3428	/**
3429	* MOV DRx
3430	*/
3431	static int emInterpretMovDRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3432	{
3433	int rc = VERR_EM_INTERPRETER;
3434	NOREF(pvFault); NOREF(pcbSize);
3435
3436	if((pDis->Param1.fUse == DISUSE_REG_GEN32 \|\| pDis->Param1.fUse == DISUSE_REG_GEN64) && pDis->Param2.fUse == DISUSE_REG_DBG)
3437	{
3438	rc = EMInterpretDRxRead(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxGenReg, pDis->Param2.Base.idxDbgReg);
3439	}
3440	else
3441	if(pDis->Param1.fUse == DISUSE_REG_DBG && (pDis->Param2.fUse == DISUSE_REG_GEN32 \|\| pDis->Param2.fUse == DISUSE_REG_GEN64))
3442	{
3443	rc = EMInterpretDRxWrite(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxDbgReg, pDis->Param2.Base.idxGenReg);
3444	}
3445	else
3446	AssertMsgFailed(("Unexpected debug register move\n"));
3447
3448	return rc;
3449	}
3450
3451
3452	/**
3453	* LLDT Emulation.
3454	*/
3455	static int emInterpretLLdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3456	{
3457	DISQPVPARAMVAL param1;
3458	RTSEL sel;
3459	NOREF(pVM); NOREF(pvFault); NOREF(pcbSize);
3460
3461	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3462	if(RT_FAILURE(rc))
3463	return VERR_EM_INTERPRETER;
3464
3465	switch(param1.type)
3466	{
3467	case DISQPV_TYPE_ADDRESS:
3468	return VERR_EM_INTERPRETER; //feeling lazy right now
3469
3470	case DISQPV_TYPE_IMMEDIATE:
3471	if(!(param1.flags & DISQPV_FLAG_16))
3472	return VERR_EM_INTERPRETER;
3473	sel = (RTSEL)param1.val.val16;
3474	break;
3475
3476	default:
3477	return VERR_EM_INTERPRETER;
3478	}
3479
3480	#ifdef IN_RING0
3481	/* Only for the VT-x real-mode emulation case. */
3482	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
3483	CPUMSetGuestLDTR(pVCpu, sel);
3484	return VINF_SUCCESS;
3485	#else
3486	if (sel == 0)
3487	{
3488	if (CPUMGetHyperLDTR(pVCpu) == 0)
3489	{
3490	// this simple case is most frequent in Windows 2000 (31k - boot & shutdown)
3491	return VINF_SUCCESS;
3492	}
3493	}
3494	//still feeling lazy
3495	return VERR_EM_INTERPRETER;
3496	#endif
3497	}
3498
3499	#ifdef IN_RING0
3500	/**
3501	* LIDT/LGDT Emulation.
3502	*/
3503	static int emInterpretLIGdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3504	{
3505	DISQPVPARAMVAL param1;
3506	RTGCPTR pParam1;
3507	X86XDTR32 dtr32;
3508	NOREF(pvFault); NOREF(pcbSize);
3509
3510	Log(("Emulate %s at %RGv\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip));
3511
3512	/* Only for the VT-x real-mode emulation case. */
3513	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
3514
3515	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3516	if(RT_FAILURE(rc))
3517	return VERR_EM_INTERPRETER;
3518
3519	switch(param1.type)
3520	{
3521	case DISQPV_TYPE_ADDRESS:
3522	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, param1.val.val16);
3523	break;
3524
3525	default:
3526	return VERR_EM_INTERPRETER;
3527	}
3528
3529	rc = emRamRead(pVM, pVCpu, pRegFrame, &dtr32, pParam1, sizeof(dtr32));
3530	AssertRCReturn(rc, VERR_EM_INTERPRETER);
3531
3532	if (!(pDis->fPrefix & DISPREFIX_OPSIZE))
3533	dtr32.uAddr &= 0xffffff; /* 16 bits operand size */
3534
3535	if (pDis->pCurInstr->uOpcode == OP_LIDT)
3536	CPUMSetGuestIDTR(pVCpu, dtr32.uAddr, dtr32.cb);
3537	else
3538	CPUMSetGuestGDTR(pVCpu, dtr32.uAddr, dtr32.cb);
3539
3540	return VINF_SUCCESS;
3541	}
3542	#endif
3543
3544
3545	#ifdef IN_RC
3546	/**
3547	* STI Emulation.
3548	*
3549	* @remark the instruction following sti is guaranteed to be executed before any interrupts are dispatched
3550	*/
3551	static int emInterpretSti(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3552	{
3553	NOREF(pcbSize);
3554	PPATMGCSTATE pGCState = PATMGetGCState(pVM);
3555
3556	if(!pGCState)
3557	{
3558	Assert(pGCState);
3559	return VERR_EM_INTERPRETER;
3560	}
3561	pGCState->uVMFlags \|= X86_EFL_IF;
3562
3563	Assert(pRegFrame->eflags.u32 & X86_EFL_IF);
3564	Assert(pvFault == SELMToFlat(pVM, DISSELREG_CS, pRegFrame, (RTGCPTR)pRegFrame->rip));
3565
3566	pVCpu->em.s.GCPtrInhibitInterrupts = pRegFrame->eip + pDis->cbInstr;
3567	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
3568
3569	return VINF_SUCCESS;
3570	}
3571	#endif /* IN_RC */
3572
3573
3574	/**
3575	* HLT Emulation.
3576	*/
3577	static VBOXSTRICTRC
3578	emInterpretHlt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3579	{
3580	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3581	return VINF_EM_HALT;
3582	}
3583
3584
3585	/**
3586	* RDTSC Emulation.
3587	*/
3588	static int emInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3589	{
3590	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3591	return EMInterpretRdtsc(pVM, pVCpu, pRegFrame);
3592	}
3593
3594	/**
3595	* RDPMC Emulation
3596	*/
3597	static int emInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3598	{
3599	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3600	return EMInterpretRdpmc(pVM, pVCpu, pRegFrame);
3601	}
3602
3603
3604	static int emInterpretMonitor(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3605	{
3606	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3607	return EMInterpretMonitor(pVM, pVCpu, pRegFrame);
3608	}
3609
3610
3611	static VBOXSTRICTRC emInterpretMWait(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3612	{
3613	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3614	return EMInterpretMWait(pVM, pVCpu, pRegFrame);
3615	}
3616
3617
3618	/**
3619	* RDMSR Emulation.
3620	*/
3621	static int emInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3622	{
3623	/* Note: The Intel manual claims there's a REX version of RDMSR that's slightly
3624	different, so we play safe by completely disassembling the instruction. */
3625	Assert(!(pDis->fPrefix & DISPREFIX_REX));
3626	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3627	return EMInterpretRdmsr(pVM, pVCpu, pRegFrame);
3628	}
3629
3630
3631	/**
3632	* WRMSR Emulation.
3633	*/
3634	static int emInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3635	{
3636	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3637	return EMInterpretWrmsr(pVM, pVCpu, pRegFrame);
3638	}
3639
3640
3641	/**
3642	* Internal worker.
3643	* @copydoc emInterpretInstructionCPUOuter
3644	* @param pVM The cross context VM structure.
3645	*/
3646	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPU(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
3647	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
3648	{
3649	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3650	Assert(enmCodeType == EMCODETYPE_SUPERVISOR \|\| enmCodeType == EMCODETYPE_ALL);
3651	Assert(pcbSize);
3652	*pcbSize = 0;
3653
3654	if (enmCodeType == EMCODETYPE_SUPERVISOR)
3655	{
3656	/*
3657	* Only supervisor guest code!!
3658	* And no complicated prefixes.
3659	*/
3660	/* Get the current privilege level. */
3661	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
3662	#ifdef VBOX_WITH_RAW_RING1
3663	if ( !EMIsRawRing1Enabled(pVM)
3664	\|\| cpl > 1
3665	\|\| pRegFrame->eflags.Bits.u2IOPL > cpl
3666	)
3667	#endif
3668	{
3669	if ( cpl != 0
3670	&& pDis->pCurInstr->uOpcode != OP_RDTSC) /* rdtsc requires emulation in ring 3 as well */
3671	{
3672	Log(("WARNING: refusing instruction emulation for user-mode code!!\n"));
3673	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedUserMode));
3674	return VERR_EM_INTERPRETER;
3675	}
3676	}
3677	}
3678	else
3679	Log2(("emInterpretInstructionCPU allowed to interpret user-level code!!\n"));
3680
3681	#ifdef IN_RC
3682	if ( (pDis->fPrefix & (DISPREFIX_REPNE \| DISPREFIX_REP))
3683	\|\| ( (pDis->fPrefix & DISPREFIX_LOCK)
3684	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG
3685	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG8B
3686	&& pDis->pCurInstr->uOpcode != OP_XADD
3687	&& pDis->pCurInstr->uOpcode != OP_OR
3688	&& pDis->pCurInstr->uOpcode != OP_AND
3689	&& pDis->pCurInstr->uOpcode != OP_XOR
3690	&& pDis->pCurInstr->uOpcode != OP_BTR
3691	)
3692	)
3693	#else
3694	if ( (pDis->fPrefix & DISPREFIX_REPNE)
3695	\|\| ( (pDis->fPrefix & DISPREFIX_REP)
3696	&& pDis->pCurInstr->uOpcode != OP_STOSWD
3697	)
3698	\|\| ( (pDis->fPrefix & DISPREFIX_LOCK)
3699	&& pDis->pCurInstr->uOpcode != OP_OR
3700	&& pDis->pCurInstr->uOpcode != OP_AND
3701	&& pDis->pCurInstr->uOpcode != OP_XOR
3702	&& pDis->pCurInstr->uOpcode != OP_BTR
3703	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG
3704	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG8B
3705	)
3706	)
3707	#endif
3708	{
3709	//Log(("EMInterpretInstruction: wrong prefix!!\n"));
3710	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedPrefix));
3711	Log4(("EM: Refuse %u on REP/REPNE/LOCK prefix grounds\n", pDis->pCurInstr->uOpcode));
3712	return VERR_EM_INTERPRETER;
3713	}
3714
3715	#if HC_ARCH_BITS == 32
3716	/*
3717	* Unable to emulate most >4 bytes accesses in 32 bits mode.
3718	* Whitelisted instructions are safe.
3719	*/
3720	if ( pDis->Param1.cb > 4
3721	&& CPUMIsGuestIn64BitCode(pVCpu))
3722	{
3723	uint32_t uOpCode = pDis->pCurInstr->uOpcode;
3724	if ( uOpCode != OP_STOSWD
3725	&& uOpCode != OP_MOV
3726	&& uOpCode != OP_CMPXCHG8B
3727	&& uOpCode != OP_XCHG
3728	&& uOpCode != OP_BTS
3729	&& uOpCode != OP_BTR
3730	&& uOpCode != OP_BTC
3731	)
3732	{
3733	# ifdef VBOX_WITH_STATISTICS
3734	switch (pDis->pCurInstr->uOpcode)
3735	{
3736	# define INTERPRET_FAILED_CASE(opcode, Instr) \
3737	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); break;
3738	INTERPRET_FAILED_CASE(OP_XCHG,Xchg);
3739	INTERPRET_FAILED_CASE(OP_DEC,Dec);
3740	INTERPRET_FAILED_CASE(OP_INC,Inc);
3741	INTERPRET_FAILED_CASE(OP_POP,Pop);
3742	INTERPRET_FAILED_CASE(OP_OR, Or);
3743	INTERPRET_FAILED_CASE(OP_XOR,Xor);
3744	INTERPRET_FAILED_CASE(OP_AND,And);
3745	INTERPRET_FAILED_CASE(OP_MOV,Mov);
3746	INTERPRET_FAILED_CASE(OP_STOSWD,StosWD);
3747	INTERPRET_FAILED_CASE(OP_INVLPG,InvlPg);
3748	INTERPRET_FAILED_CASE(OP_CPUID,CpuId);
3749	INTERPRET_FAILED_CASE(OP_MOV_CR,MovCRx);
3750	INTERPRET_FAILED_CASE(OP_MOV_DR,MovDRx);
3751	INTERPRET_FAILED_CASE(OP_LLDT,LLdt);
3752	INTERPRET_FAILED_CASE(OP_LIDT,LIdt);
3753	INTERPRET_FAILED_CASE(OP_LGDT,LGdt);
3754	INTERPRET_FAILED_CASE(OP_LMSW,Lmsw);
3755	INTERPRET_FAILED_CASE(OP_CLTS,Clts);
3756	INTERPRET_FAILED_CASE(OP_MONITOR,Monitor);
3757	INTERPRET_FAILED_CASE(OP_MWAIT,MWait);
3758	INTERPRET_FAILED_CASE(OP_RDMSR,Rdmsr);
3759	INTERPRET_FAILED_CASE(OP_WRMSR,Wrmsr);
3760	INTERPRET_FAILED_CASE(OP_ADD,Add);
3761	INTERPRET_FAILED_CASE(OP_SUB,Sub);
3762	INTERPRET_FAILED_CASE(OP_ADC,Adc);
3763	INTERPRET_FAILED_CASE(OP_BTR,Btr);
3764	INTERPRET_FAILED_CASE(OP_BTS,Bts);
3765	INTERPRET_FAILED_CASE(OP_BTC,Btc);
3766	INTERPRET_FAILED_CASE(OP_RDTSC,Rdtsc);
3767	INTERPRET_FAILED_CASE(OP_CMPXCHG, CmpXchg);
3768	INTERPRET_FAILED_CASE(OP_STI, Sti);
3769	INTERPRET_FAILED_CASE(OP_XADD,XAdd);
3770	INTERPRET_FAILED_CASE(OP_CMPXCHG8B,CmpXchg8b);
3771	INTERPRET_FAILED_CASE(OP_HLT, Hlt);
3772	INTERPRET_FAILED_CASE(OP_IRET,Iret);
3773	INTERPRET_FAILED_CASE(OP_WBINVD,WbInvd);
3774	INTERPRET_FAILED_CASE(OP_MOVNTPS,MovNTPS);
3775	# undef INTERPRET_FAILED_CASE
3776	default:
3777	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
3778	break;
3779	}
3780	# endif /* VBOX_WITH_STATISTICS */
3781	Log4(("EM: Refuse %u on grounds of accessing %u bytes\n", pDis->pCurInstr->uOpcode, pDis->Param1.cb));
3782	return VERR_EM_INTERPRETER;
3783	}
3784	}
3785	#endif
3786
3787	VBOXSTRICTRC rc;
3788	#if (defined(VBOX_STRICT) \|\| defined(LOG_ENABLED))
3789	LogFlow(("emInterpretInstructionCPU %s\n", emGetMnemonic(pDis)));
3790	#endif
3791	switch (pDis->pCurInstr->uOpcode)
3792	{
3793	/*
3794	* Macros for generating the right case statements.
3795	*/
3796	# ifndef VBOX_COMPARE_IEM_AND_EM
3797	# define INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3798	case opcode:\
3799	if (pDis->fPrefix & DISPREFIX_LOCK) \
3800	rc = emInterpretLock##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulateLock); \
3801	else \
3802	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3803	if (RT_SUCCESS(rc)) \
3804	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3805	else \
3806	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3807	return rc
3808	# else /* VBOX_COMPARE_IEM_AND_EM */
3809	# define INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3810	case opcode:\
3811	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3812	if (RT_SUCCESS(rc)) \
3813	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3814	else \
3815	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3816	return rc
3817	# endif /* VBOX_COMPARE_IEM_AND_EM */
3818
3819	#define INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate) \
3820	case opcode:\
3821	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3822	if (RT_SUCCESS(rc)) \
3823	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3824	else \
3825	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3826	return rc
3827
3828	#define INTERPRET_CASE_EX_PARAM2(opcode, Instr, InstrFn, pfnEmulate) \
3829	INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate)
3830	#define INTERPRET_CASE_EX_LOCK_PARAM2(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3831	INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock)
3832
3833	#define INTERPRET_CASE(opcode, Instr) \
3834	case opcode:\
3835	rc = emInterpret##Instr(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
3836	if (RT_SUCCESS(rc)) \
3837	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3838	else \
3839	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3840	return rc
3841
3842	#define INTERPRET_CASE_EX_DUAL_PARAM2(opcode, Instr, InstrFn) \
3843	case opcode:\
3844	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
3845	if (RT_SUCCESS(rc)) \
3846	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3847	else \
3848	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3849	return rc
3850
3851	#define INTERPRET_STAT_CASE(opcode, Instr) \
3852	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); return VERR_EM_INTERPRETER;
3853
3854	/*
3855	* The actual case statements.
3856	*/
3857	INTERPRET_CASE(OP_XCHG,Xchg);
3858	INTERPRET_CASE_EX_PARAM2(OP_DEC,Dec, IncDec, EMEmulateDec);
3859	INTERPRET_CASE_EX_PARAM2(OP_INC,Inc, IncDec, EMEmulateInc);
3860	INTERPRET_CASE(OP_POP,Pop);
3861	INTERPRET_CASE_EX_LOCK_PARAM3(OP_OR, Or, OrXorAnd, EMEmulateOr, EMEmulateLockOr);
3862	INTERPRET_CASE_EX_LOCK_PARAM3(OP_XOR,Xor, OrXorAnd, EMEmulateXor, EMEmulateLockXor);
3863	INTERPRET_CASE_EX_LOCK_PARAM3(OP_AND,And, OrXorAnd, EMEmulateAnd, EMEmulateLockAnd);
3864	INTERPRET_CASE(OP_MOV,Mov);
3865	#ifndef IN_RC
3866	INTERPRET_CASE(OP_STOSWD,StosWD);
3867	#endif
3868	INTERPRET_CASE(OP_INVLPG,InvlPg);
3869	INTERPRET_CASE(OP_CPUID,CpuId);
3870	INTERPRET_CASE(OP_MOV_CR,MovCRx);
3871	INTERPRET_CASE(OP_MOV_DR,MovDRx);
3872	#ifdef IN_RING0
3873	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LIDT, LIdt, LIGdt);
3874	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LGDT, LGdt, LIGdt);
3875	#endif
3876	INTERPRET_CASE(OP_LLDT,LLdt);
3877	INTERPRET_CASE(OP_LMSW,Lmsw);
3878	#ifdef EM_EMULATE_SMSW
3879	INTERPRET_CASE(OP_SMSW,Smsw);
3880	#endif
3881	INTERPRET_CASE(OP_CLTS,Clts);
3882	INTERPRET_CASE(OP_MONITOR, Monitor);
3883	INTERPRET_CASE(OP_MWAIT, MWait);
3884	INTERPRET_CASE(OP_RDMSR, Rdmsr);
3885	INTERPRET_CASE(OP_WRMSR, Wrmsr);
3886	INTERPRET_CASE_EX_PARAM3(OP_ADD,Add, AddSub, EMEmulateAdd);
3887	INTERPRET_CASE_EX_PARAM3(OP_SUB,Sub, AddSub, EMEmulateSub);
3888	INTERPRET_CASE(OP_ADC,Adc);
3889	INTERPRET_CASE_EX_LOCK_PARAM2(OP_BTR,Btr, BitTest, EMEmulateBtr, EMEmulateLockBtr);
3890	INTERPRET_CASE_EX_PARAM2(OP_BTS,Bts, BitTest, EMEmulateBts);
3891	INTERPRET_CASE_EX_PARAM2(OP_BTC,Btc, BitTest, EMEmulateBtc);
3892	INTERPRET_CASE(OP_RDPMC,Rdpmc);
3893	INTERPRET_CASE(OP_RDTSC,Rdtsc);
3894	INTERPRET_CASE(OP_CMPXCHG, CmpXchg);
3895	#ifdef IN_RC
3896	INTERPRET_CASE(OP_STI,Sti);
3897	INTERPRET_CASE(OP_XADD, XAdd);
3898	INTERPRET_CASE(OP_IRET,Iret);
3899	#endif
3900	INTERPRET_CASE(OP_CMPXCHG8B, CmpXchg8b);
3901	INTERPRET_CASE(OP_HLT,Hlt);
3902	INTERPRET_CASE(OP_WBINVD,WbInvd);
3903	#ifdef VBOX_WITH_STATISTICS
3904	# ifndef IN_RC
3905	INTERPRET_STAT_CASE(OP_XADD, XAdd);
3906	# endif
3907	INTERPRET_STAT_CASE(OP_MOVNTPS,MovNTPS);
3908	#endif
3909
3910	default:
3911	Log3(("emInterpretInstructionCPU: opcode=%d\n", pDis->pCurInstr->uOpcode));
3912	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
3913	return VERR_EM_INTERPRETER;
3914
3915	#undef INTERPRET_CASE_EX_PARAM2
3916	#undef INTERPRET_STAT_CASE
3917	#undef INTERPRET_CASE_EX
3918	#undef INTERPRET_CASE
3919	} /* switch (opcode) */
3920	/* not reached */
3921	}
3922
3923	/**
3924	* Interprets the current instruction using the supplied DISCPUSTATE structure.
3925	*
3926	* EIP is NOT updated!
3927	*
3928	* @returns VBox strict status code.
3929	* @retval VINF_* Scheduling instructions. When these are returned, it
3930	* starts to get a bit tricky to know whether code was
3931	* executed or not... We'll address this when it becomes a problem.
3932	* @retval VERR_EM_INTERPRETER Something we can't cope with.
3933	* @retval VERR_* Fatal errors.
3934	*
3935	* @param pVCpu The cross context virtual CPU structure.
3936	* @param pDis The disassembler cpu state for the instruction to be
3937	* interpreted.
3938	* @param pRegFrame The register frame. EIP is NOT changed!
3939	* @param pvFault The fault address (CR2).
3940	* @param pcbSize Size of the write (if applicable).
3941	* @param enmCodeType Code type (user/supervisor)
3942	*
3943	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
3944	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
3945	* to worry about e.g. invalid modrm combinations (!)
3946	*
3947	* @todo At this time we do NOT check if the instruction overwrites vital information.
3948	* Make sure this can't happen!! (will add some assertions/checks later)
3949	*/
3950	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPUOuter(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
3951	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
3952	{
3953	STAM_PROFILE_START(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
3954	VBOXSTRICTRC rc = emInterpretInstructionCPU(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, pRegFrame, pvFault, enmCodeType, pcbSize);
3955	STAM_PROFILE_STOP(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
3956	if (RT_SUCCESS(rc))
3957	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretSucceeded));
3958	else
3959	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretFailed));
3960	return rc;
3961	}
3962
3963
3964	#endif /* !VBOX_WITH_IEM */

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source: vbox/trunk/src/VBox/VMM/VMMAll/EMAll.cpp@ 61683

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