EMAll.cpp@ 51271

Last change on this file since 51271 was 50866, checked in by vboxsync, 11 years ago
VMM/EMAll: Disallow writing to reserved bits while loading CR0.
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 141.2 KB

Line
1	/* $Id: EMAll.cpp 50866 2014-03-25 15:47:11Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor(/Manager) - All contexts
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 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	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_EM
22	#include <VBox/vmm/em.h>
23	#include <VBox/vmm/mm.h>
24	#include <VBox/vmm/selm.h>
25	#include <VBox/vmm/patm.h>
26	#include <VBox/vmm/csam.h>
27	#include <VBox/vmm/pgm.h>
28	#ifdef VBOX_WITH_IEM
29	# include <VBox/vmm/iem.h>
30	#endif
31	#include <VBox/vmm/iom.h>
32	#include <VBox/vmm/stam.h>
33	#include "EMInternal.h"
34	#include <VBox/vmm/vm.h>
35	#include <VBox/vmm/vmm.h>
36	#include <VBox/vmm/hm.h>
37	#include <VBox/vmm/tm.h>
38	#include <VBox/vmm/pdmapi.h>
39	#include <VBox/param.h>
40	#include <VBox/err.h>
41	#include <VBox/dis.h>
42	#include <VBox/disopcode.h>
43	#include <VBox/log.h>
44	#include "internal/pgm.h"
45	#include <iprt/assert.h>
46	#include <iprt/asm.h>
47	#include <iprt/string.h>
48
49	#ifndef IN_RC
50	#undef VBOX_WITH_IEM
51	#endif
52	#ifdef VBOX_WITH_IEM
53	//# define VBOX_COMPARE_IEM_AND_EM /* debugging... */
54	//# define VBOX_SAME_AS_EM
55	//# define VBOX_COMPARE_IEM_LAST
56	#endif
57
58	#ifdef VBOX_WITH_RAW_RING1
59	# define EM_EMULATE_SMSW
60	#endif
61
62
63	/*******************************************************************************
64	* Defined Constants And Macros *
65	*******************************************************************************/
66	/** @def EM_ASSERT_FAULT_RETURN
67	* Safety check.
68	*
69	* Could in theory misfire on a cross page boundary access...
70	*
71	* Currently disabled because the CSAM (+ PATM) patch monitoring occasionally
72	* turns up an alias page instead of the original faulting one and annoying the
73	* heck out of anyone running a debug build. See @bugref{2609} and @bugref{1931}.
74	*/
75	#if 0
76	# define EM_ASSERT_FAULT_RETURN(expr, rc) AssertReturn(expr, rc)
77	#else
78	# define EM_ASSERT_FAULT_RETURN(expr, rc) do { } while (0)
79	#endif
80
81
82	/*******************************************************************************
83	* Internal Functions *
84	*******************************************************************************/
85	#if !defined(VBOX_WITH_IEM) \|\| defined(VBOX_COMPARE_IEM_AND_EM)
86	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPUOuter(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
87	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize);
88	#endif
89
90
91	/*******************************************************************************
92	* Global Variables *
93	*******************************************************************************/
94	#ifdef VBOX_COMPARE_IEM_AND_EM
95	static const uint32_t g_fInterestingFFs = VMCPU_FF_TO_R3
96	\| VMCPU_FF_CSAM_PENDING_ACTION \| VMCPU_FF_CSAM_SCAN_PAGE \| VMCPU_FF_INHIBIT_INTERRUPTS
97	\| VMCPU_FF_SELM_SYNC_LDT \| VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_TSS \| VMCPU_FF_TRPM_SYNC_IDT
98	\| VMCPU_FF_TLB_FLUSH \| VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL;
99	static uint32_t g_fIncomingFFs;
100	static CPUMCTX g_IncomingCtx;
101	static bool g_fIgnoreRaxRdx = false;
102
103	static uint32_t g_fEmFFs;
104	static CPUMCTX g_EmCtx;
105	static uint8_t g_abEmWrote[256];
106	static size_t g_cbEmWrote;
107
108	static uint32_t g_fIemFFs;
109	static CPUMCTX g_IemCtx;
110	extern uint8_t g_abIemWrote[256];
111	#if defined(VBOX_COMPARE_IEM_FIRST) \|\| defined(VBOX_COMPARE_IEM_LAST)
112	extern size_t g_cbIemWrote;
113	#else
114	static size_t g_cbIemWrote;
115	#endif
116	#endif
117
118
119	/**
120	* Get the current execution manager status.
121	*
122	* @returns Current status.
123	* @param pVCpu Pointer to the VMCPU.
124	*/
125	VMM_INT_DECL(EMSTATE) EMGetState(PVMCPU pVCpu)
126	{
127	return pVCpu->em.s.enmState;
128	}
129
130	/**
131	* Sets the current execution manager status. (use only when you know what you're doing!)
132	*
133	* @param pVCpu Pointer to the VMCPU.
134	*/
135	VMM_INT_DECL(void) EMSetState(PVMCPU pVCpu, EMSTATE enmNewState)
136	{
137	/* Only allowed combination: */
138	Assert(pVCpu->em.s.enmState == EMSTATE_WAIT_SIPI && enmNewState == EMSTATE_HALTED);
139	pVCpu->em.s.enmState = enmNewState;
140	}
141
142
143	/**
144	* Sets the PC for which interrupts should be inhibited.
145	*
146	* @param pVCpu Pointer to the VMCPU.
147	* @param PC The PC.
148	*/
149	VMMDECL(void) EMSetInhibitInterruptsPC(PVMCPU pVCpu, RTGCUINTPTR PC)
150	{
151	pVCpu->em.s.GCPtrInhibitInterrupts = PC;
152	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
153	}
154
155
156	/**
157	* Gets the PC for which interrupts should be inhibited.
158	*
159	* There are a few instructions which inhibits or delays interrupts
160	* for the instruction following them. These instructions are:
161	* - STI
162	* - MOV SS, r/m16
163	* - POP SS
164	*
165	* @returns The PC for which interrupts should be inhibited.
166	* @param pVCpu Pointer to the VMCPU.
167	*
168	*/
169	VMMDECL(RTGCUINTPTR) EMGetInhibitInterruptsPC(PVMCPU pVCpu)
170	{
171	return pVCpu->em.s.GCPtrInhibitInterrupts;
172	}
173
174
175	/**
176	* Prepare an MWAIT - essentials of the MONITOR instruction.
177	*
178	* @returns VINF_SUCCESS
179	* @param pVCpu The current CPU.
180	* @param rax The content of RAX.
181	* @param rcx The content of RCX.
182	* @param rdx The content of RDX.
183	* @param GCPhys The physical address corresponding to rax.
184	*/
185	VMM_INT_DECL(int) EMMonitorWaitPrepare(PVMCPU pVCpu, uint64_t rax, uint64_t rcx, uint64_t rdx, RTGCPHYS GCPhys)
186	{
187	pVCpu->em.s.MWait.uMonitorRAX = rax;
188	pVCpu->em.s.MWait.uMonitorRCX = rcx;
189	pVCpu->em.s.MWait.uMonitorRDX = rdx;
190	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_MONITOR_ACTIVE;
191	/** @todo Make use of GCPhys. */
192	NOREF(GCPhys);
193	/** @todo Complete MONITOR implementation. */
194	return VINF_SUCCESS;
195	}
196
197
198	/**
199	* Performs an MWAIT.
200	*
201	* @returns VINF_SUCCESS
202	* @param pVCpu The current CPU.
203	* @param rax The content of RAX.
204	* @param rcx The content of RCX.
205	*/
206	VMM_INT_DECL(int) EMMonitorWaitPerform(PVMCPU pVCpu, uint64_t rax, uint64_t rcx)
207	{
208	pVCpu->em.s.MWait.uMWaitRAX = rax;
209	pVCpu->em.s.MWait.uMWaitRCX = rcx;
210	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_ACTIVE;
211	if (rcx)
212	pVCpu->em.s.MWait.fWait \|= EMMWAIT_FLAG_BREAKIRQIF0;
213	else
214	pVCpu->em.s.MWait.fWait &= ~EMMWAIT_FLAG_BREAKIRQIF0;
215	/** @todo not completely correct?? */
216	return VINF_EM_HALT;
217	}
218
219
220
221	/**
222	* Determine if we should continue after encountering a mwait instruction.
223	*
224	* Clears MWAIT flags if returning @c true.
225	*
226	* @returns true if we should continue, false if we should halt.
227	* @param pVCpu Pointer to the VMCPU.
228	* @param pCtx Current CPU context.
229	*/
230	VMM_INT_DECL(bool) EMMonitorWaitShouldContinue(PVMCPU pVCpu, PCPUMCTX pCtx)
231	{
232	if ( pCtx->eflags.Bits.u1IF
233	\|\| ( (pVCpu->em.s.MWait.fWait & (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0))
234	== (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0)) )
235	{
236	if (VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)))
237	{
238	pVCpu->em.s.MWait.fWait &= ~(EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0);
239	return true;
240	}
241	}
242
243	return false;
244	}
245
246
247	/**
248	* Determine if we should continue after encountering a hlt instruction.
249	*
250	* @returns true if we should continue, false if we should halt.
251	* @param pVCpu Pointer to the VMCPU.
252	* @param pCtx Current CPU context.
253	*/
254	VMM_INT_DECL(bool) EMShouldContinueAfterHalt(PVMCPU pVCpu, PCPUMCTX pCtx)
255	{
256	if (pCtx->eflags.Bits.u1IF)
257	return !!VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC));
258	return false;
259	}
260
261
262	/**
263	* Locks REM execution to a single VCPU.
264	*
265	* @param pVM Pointer to the VM.
266	*/
267	VMMDECL(void) EMRemLock(PVM pVM)
268	{
269	#ifdef VBOX_WITH_REM
270	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
271	return; /* early init */
272
273	Assert(!PGMIsLockOwner(pVM));
274	Assert(!IOMIsLockWriteOwner(pVM));
275	int rc = PDMCritSectEnter(&pVM->em.s.CritSectREM, VERR_SEM_BUSY);
276	AssertRCSuccess(rc);
277	#endif
278	}
279
280
281	/**
282	* Unlocks REM execution
283	*
284	* @param pVM Pointer to the VM.
285	*/
286	VMMDECL(void) EMRemUnlock(PVM pVM)
287	{
288	#ifdef VBOX_WITH_REM
289	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
290	return; /* early init */
291
292	PDMCritSectLeave(&pVM->em.s.CritSectREM);
293	#endif
294	}
295
296
297	/**
298	* Check if this VCPU currently owns the REM lock.
299	*
300	* @returns bool owner/not owner
301	* @param pVM Pointer to the VM.
302	*/
303	VMMDECL(bool) EMRemIsLockOwner(PVM pVM)
304	{
305	#ifdef VBOX_WITH_REM
306	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
307	return true; /* early init */
308
309	return PDMCritSectIsOwner(&pVM->em.s.CritSectREM);
310	#else
311	return true;
312	#endif
313	}
314
315
316	/**
317	* Try to acquire the REM lock.
318	*
319	* @returns VBox status code
320	* @param pVM Pointer to the VM.
321	*/
322	VMM_INT_DECL(int) EMRemTryLock(PVM pVM)
323	{
324	#ifdef VBOX_WITH_REM
325	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
326	return VINF_SUCCESS; /* early init */
327
328	return PDMCritSectTryEnter(&pVM->em.s.CritSectREM);
329	#else
330	return VINF_SUCCESS;
331	#endif
332	}
333
334
335	/**
336	* @callback_method_impl{FNDISREADBYTES}
337	*/
338	static DECLCALLBACK(int) emReadBytes(PDISCPUSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead)
339	{
340	PVMCPU pVCpu = (PVMCPU)pDis->pvUser;
341	#if defined(IN_RC) \|\| defined(IN_RING3)
342	PVM pVM = pVCpu->CTX_SUFF(pVM);
343	#endif
344	RTUINTPTR uSrcAddr = pDis->uInstrAddr + offInstr;
345	int rc;
346
347	/*
348	* Figure how much we can or must read.
349	*/
350	size_t cbToRead = PAGE_SIZE - (uSrcAddr & PAGE_OFFSET_MASK);
351	if (cbToRead > cbMaxRead)
352	cbToRead = cbMaxRead;
353	else if (cbToRead < cbMinRead)
354	cbToRead = cbMinRead;
355
356	#if defined(VBOX_WITH_RAW_MODE) && (defined(IN_RC) \|\| defined(IN_RING3))
357	/*
358	* We might be called upon to interpret an instruction in a patch.
359	*/
360	if (PATMIsPatchGCAddr(pVCpu->CTX_SUFF(pVM), uSrcAddr))
361	{
362	# ifdef IN_RC
363	memcpy(&pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
364	# else
365	memcpy(&pDis->abInstr[offInstr], PATMR3GCPtrToHCPtr(pVCpu->CTX_SUFF(pVM), uSrcAddr), cbToRead);
366	# endif
367	rc = VINF_SUCCESS;
368	}
369	else
370	#endif
371	{
372	# ifdef IN_RC
373	/*
374	* Try access it thru the shadow page tables first. Fall back on the
375	* slower PGM method if it fails because the TLB or page table was
376	* modified recently.
377	*/
378	rc = MMGCRamRead(pVCpu->pVMRC, &pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
379	if (rc == VERR_ACCESS_DENIED && cbToRead > cbMinRead)
380	{
381	cbToRead = cbMinRead;
382	rc = MMGCRamRead(pVCpu->pVMRC, &pDis->abInstr[offInstr], (void *)(uintptr_t)uSrcAddr, cbToRead);
383	}
384	if (rc == VERR_ACCESS_DENIED)
385	#endif
386	{
387	rc = PGMPhysSimpleReadGCPtr(pVCpu, &pDis->abInstr[offInstr], uSrcAddr, cbToRead);
388	if (RT_FAILURE(rc))
389	{
390	if (cbToRead > cbMinRead)
391	{
392	cbToRead = cbMinRead;
393	rc = PGMPhysSimpleReadGCPtr(pVCpu, &pDis->abInstr[offInstr], uSrcAddr, cbToRead);
394	}
395	if (RT_FAILURE(rc))
396	{
397	#ifndef IN_RC
398	/*
399	* If we fail to find the page via the guest's page tables
400	* we invalidate the page in the host TLB (pertaining to
401	* the guest in the NestedPaging case). See @bugref{6043}.
402	*/
403	if (rc == VERR_PAGE_TABLE_NOT_PRESENT \|\| rc == VERR_PAGE_NOT_PRESENT)
404	{
405	HMInvalidatePage(pVCpu, uSrcAddr);
406	if (((uSrcAddr + cbToRead - 1) >> PAGE_SHIFT) != (uSrcAddr >> PAGE_SHIFT))
407	HMInvalidatePage(pVCpu, uSrcAddr + cbToRead - 1);
408	}
409	#endif
410	}
411	}
412	}
413	}
414
415	pDis->cbCachedInstr = offInstr + (uint8_t)cbToRead;
416	return rc;
417	}
418
419
420	DECLINLINE(int) emDisCoreOne(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, RTGCUINTPTR InstrGC, uint32_t *pOpsize)
421	{
422	NOREF(pVM);
423	return DISInstrWithReader(InstrGC, (DISCPUMODE)pDis->uCpuMode, emReadBytes, pVCpu, pDis, pOpsize);
424	}
425
426
427	/**
428	* Disassembles the current instruction.
429	*
430	* @returns VBox status code, see SELMToFlatEx and EMInterpretDisasOneEx for
431	* details.
432	*
433	* @param pVM Pointer to the VM.
434	* @param pVCpu Pointer to the VMCPU.
435	* @param pDis Where to return the parsed instruction info.
436	* @param pcbInstr Where to return the instruction size. (optional)
437	*/
438	VMM_INT_DECL(int) EMInterpretDisasCurrent(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, unsigned *pcbInstr)
439	{
440	PCPUMCTXCORE pCtxCore = CPUMCTX2CORE(CPUMQueryGuestCtxPtr(pVCpu));
441	RTGCPTR GCPtrInstr;
442	#if 0
443	int rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pCtxCore, pCtxCore->rip, 0, &GCPtrInstr);
444	#else
445	/** @todo Get the CPU mode as well while we're at it! */
446	int rc = SELMValidateAndConvertCSAddr(pVCpu, pCtxCore->eflags, pCtxCore->ss.Sel, pCtxCore->cs.Sel, &pCtxCore->cs,
447	pCtxCore->rip, &GCPtrInstr);
448	#endif
449	if (RT_FAILURE(rc))
450	{
451	Log(("EMInterpretDisasOne: Failed to convert %RTsel:%RGv (cpl=%d) - rc=%Rrc !!\n",
452	pCtxCore->cs.Sel, (RTGCPTR)pCtxCore->rip, pCtxCore->ss.Sel & X86_SEL_RPL, rc));
453	return rc;
454	}
455	return EMInterpretDisasOneEx(pVM, pVCpu, (RTGCUINTPTR)GCPtrInstr, pCtxCore, pDis, pcbInstr);
456	}
457
458
459	/**
460	* Disassembles one instruction.
461	*
462	* This is used by internally by the interpreter and by trap/access handlers.
463	*
464	* @returns VBox status code.
465	*
466	* @param pVM Pointer to the VM.
467	* @param pVCpu Pointer to the VMCPU.
468	* @param GCPtrInstr The flat address of the instruction.
469	* @param pCtxCore The context core (used to determine the cpu mode).
470	* @param pDis Where to return the parsed instruction info.
471	* @param pcbInstr Where to return the instruction size. (optional)
472	*/
473	VMM_INT_DECL(int) EMInterpretDisasOneEx(PVM pVM, PVMCPU pVCpu, RTGCUINTPTR GCPtrInstr, PCCPUMCTXCORE pCtxCore,
474	PDISCPUSTATE pDis, unsigned *pcbInstr)
475	{
476	NOREF(pVM);
477	Assert(pCtxCore == CPUMGetGuestCtxCore(pVCpu));
478	DISCPUMODE enmCpuMode = CPUMGetGuestDisMode(pVCpu);
479	/** @todo Deal with too long instruction (=> \#GP), opcode read errors (=>
480	* \#PF, \#GP, \#??), undefined opcodes (=> \#UD), and such. */
481	int rc = DISInstrWithReader(GCPtrInstr, enmCpuMode, emReadBytes, pVCpu, pDis, pcbInstr);
482	if (RT_SUCCESS(rc))
483	return VINF_SUCCESS;
484	AssertMsg(rc == VERR_PAGE_NOT_PRESENT \|\| rc == VERR_PAGE_TABLE_NOT_PRESENT, ("DISCoreOne failed to GCPtrInstr=%RGv rc=%Rrc\n", GCPtrInstr, rc));
485	return rc;
486	}
487
488
489	#if defined(VBOX_COMPARE_IEM_FIRST) \|\| defined(VBOX_COMPARE_IEM_LAST)
490	static void emCompareWithIem(PVMCPU pVCpu, PCCPUMCTX pEmCtx, PCCPUMCTX pIemCtx,
491	VBOXSTRICTRC rcEm, VBOXSTRICTRC rcIem,
492	uint32_t cbEm, uint32_t cbIem)
493	{
494	/* Quick compare. */
495	if ( rcEm == rcIem
496	&& cbEm == cbIem
497	&& g_cbEmWrote == g_cbIemWrote
498	&& memcmp(g_abIemWrote, g_abEmWrote, g_cbIemWrote) == 0
499	&& memcmp(pIemCtx, pEmCtx, sizeof(*pIemCtx)) == 0
500	&& (g_fEmFFs & g_fInterestingFFs) == (g_fIemFFs & g_fInterestingFFs)
501	)
502	return;
503
504	/* Report exact differences. */
505	RTLogPrintf("! EM and IEM differs at %04x:%08RGv !\n", g_IncomingCtx.cs.Sel, g_IncomingCtx.rip);
506	if (rcEm != rcIem)
507	RTLogPrintf(" * rcIem=%Rrc rcEm=%Rrc\n", VBOXSTRICTRC_VAL(rcIem), VBOXSTRICTRC_VAL(rcEm));
508	else if (cbEm != cbIem)
509	RTLogPrintf(" * cbIem=%#x cbEm=%#x\n", cbIem, cbEm);
510
511	if (RT_SUCCESS(rcEm) && RT_SUCCESS(rcIem))
512	{
513	if (g_cbIemWrote != g_cbEmWrote)
514	RTLogPrintf("!! g_cbIemWrote=%#x g_cbEmWrote=%#x\n", g_cbIemWrote, g_cbEmWrote);
515	else if (memcmp(g_abIemWrote, g_abEmWrote, g_cbIemWrote))
516	{
517	RTLogPrintf("!! IemWrote %.*Rhxs\n", RT_MIN(RT_MAX(1, g_cbIemWrote), 64), g_abIemWrote);
518	RTLogPrintf("!! EemWrote %.*Rhxs\n", RT_MIN(RT_MAX(1, g_cbIemWrote), 64), g_abIemWrote);
519	}
520
521	if ((g_fEmFFs & g_fInterestingFFs) != (g_fIemFFs & g_fInterestingFFs))
522	RTLogPrintf("!! g_fIemFFs=%#x g_fEmFFs=%#x (diff=%#x)\n", g_fIemFFs & g_fInterestingFFs,
523	g_fEmFFs & g_fInterestingFFs, (g_fIemFFs ^ g_fEmFFs) & g_fInterestingFFs);
524
525	# define CHECK_FIELD(a_Field) \
526	do \
527	{ \
528	if (pEmCtx->a_Field != pIemCtx->a_Field) \
529	{ \
530	switch (sizeof(pEmCtx->a_Field)) \
531	{ \
532	case 1: RTLogPrintf("!! %8s differs - iem=%02x - em=%02x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
533	case 2: RTLogPrintf("!! %8s differs - iem=%04x - em=%04x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
534	case 4: RTLogPrintf("!! %8s differs - iem=%08x - em=%08x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
535	case 8: RTLogPrintf("!! %8s differs - iem=%016llx - em=%016llx\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); break; \
536	default: RTLogPrintf("!! %8s differs\n", #a_Field); break; \
537	} \
538	cDiffs++; \
539	} \
540	} while (0)
541
542	# define CHECK_BIT_FIELD(a_Field) \
543	do \
544	{ \
545	if (pEmCtx->a_Field != pIemCtx->a_Field) \
546	{ \
547	RTLogPrintf("!! %8s differs - iem=%02x - em=%02x\n", #a_Field, pIemCtx->a_Field, pEmCtx->a_Field); \
548	cDiffs++; \
549	} \
550	} while (0)
551
552	# define CHECK_SEL(a_Sel) \
553	do \
554	{ \
555	CHECK_FIELD(a_Sel.Sel); \
556	CHECK_FIELD(a_Sel.Attr.u); \
557	CHECK_FIELD(a_Sel.u64Base); \
558	CHECK_FIELD(a_Sel.u32Limit); \
559	CHECK_FIELD(a_Sel.fFlags); \
560	} while (0)
561
562	unsigned cDiffs = 0;
563	if (memcmp(&pEmCtx->fpu, &pIemCtx->fpu, sizeof(pIemCtx->fpu)))
564	{
565	RTLogPrintf(" the FPU state differs\n");
566	cDiffs++;
567	CHECK_FIELD(fpu.FCW);
568	CHECK_FIELD(fpu.FSW);
569	CHECK_FIELD(fpu.FTW);
570	CHECK_FIELD(fpu.FOP);
571	CHECK_FIELD(fpu.FPUIP);
572	CHECK_FIELD(fpu.CS);
573	CHECK_FIELD(fpu.Rsrvd1);
574	CHECK_FIELD(fpu.FPUDP);
575	CHECK_FIELD(fpu.DS);
576	CHECK_FIELD(fpu.Rsrvd2);
577	CHECK_FIELD(fpu.MXCSR);
578	CHECK_FIELD(fpu.MXCSR_MASK);
579	CHECK_FIELD(fpu.aRegs[0].au64[0]); CHECK_FIELD(fpu.aRegs[0].au64[1]);
580	CHECK_FIELD(fpu.aRegs[1].au64[0]); CHECK_FIELD(fpu.aRegs[1].au64[1]);
581	CHECK_FIELD(fpu.aRegs[2].au64[0]); CHECK_FIELD(fpu.aRegs[2].au64[1]);
582	CHECK_FIELD(fpu.aRegs[3].au64[0]); CHECK_FIELD(fpu.aRegs[3].au64[1]);
583	CHECK_FIELD(fpu.aRegs[4].au64[0]); CHECK_FIELD(fpu.aRegs[4].au64[1]);
584	CHECK_FIELD(fpu.aRegs[5].au64[0]); CHECK_FIELD(fpu.aRegs[5].au64[1]);
585	CHECK_FIELD(fpu.aRegs[6].au64[0]); CHECK_FIELD(fpu.aRegs[6].au64[1]);
586	CHECK_FIELD(fpu.aRegs[7].au64[0]); CHECK_FIELD(fpu.aRegs[7].au64[1]);
587	CHECK_FIELD(fpu.aXMM[ 0].au64[0]); CHECK_FIELD(fpu.aXMM[ 0].au64[1]);
588	CHECK_FIELD(fpu.aXMM[ 1].au64[0]); CHECK_FIELD(fpu.aXMM[ 1].au64[1]);
589	CHECK_FIELD(fpu.aXMM[ 2].au64[0]); CHECK_FIELD(fpu.aXMM[ 2].au64[1]);
590	CHECK_FIELD(fpu.aXMM[ 3].au64[0]); CHECK_FIELD(fpu.aXMM[ 3].au64[1]);
591	CHECK_FIELD(fpu.aXMM[ 4].au64[0]); CHECK_FIELD(fpu.aXMM[ 4].au64[1]);
592	CHECK_FIELD(fpu.aXMM[ 5].au64[0]); CHECK_FIELD(fpu.aXMM[ 5].au64[1]);
593	CHECK_FIELD(fpu.aXMM[ 6].au64[0]); CHECK_FIELD(fpu.aXMM[ 6].au64[1]);
594	CHECK_FIELD(fpu.aXMM[ 7].au64[0]); CHECK_FIELD(fpu.aXMM[ 7].au64[1]);
595	CHECK_FIELD(fpu.aXMM[ 8].au64[0]); CHECK_FIELD(fpu.aXMM[ 8].au64[1]);
596	CHECK_FIELD(fpu.aXMM[ 9].au64[0]); CHECK_FIELD(fpu.aXMM[ 9].au64[1]);
597	CHECK_FIELD(fpu.aXMM[10].au64[0]); CHECK_FIELD(fpu.aXMM[10].au64[1]);
598	CHECK_FIELD(fpu.aXMM[11].au64[0]); CHECK_FIELD(fpu.aXMM[11].au64[1]);
599	CHECK_FIELD(fpu.aXMM[12].au64[0]); CHECK_FIELD(fpu.aXMM[12].au64[1]);
600	CHECK_FIELD(fpu.aXMM[13].au64[0]); CHECK_FIELD(fpu.aXMM[13].au64[1]);
601	CHECK_FIELD(fpu.aXMM[14].au64[0]); CHECK_FIELD(fpu.aXMM[14].au64[1]);
602	CHECK_FIELD(fpu.aXMM[15].au64[0]); CHECK_FIELD(fpu.aXMM[15].au64[1]);
603	for (unsigned i = 0; i < RT_ELEMENTS(pEmCtx->fpu.au32RsrvdRest); i++)
604	CHECK_FIELD(fpu.au32RsrvdRest[i]);
605	}
606	CHECK_FIELD(rip);
607	if (pEmCtx->rflags.u != pIemCtx->rflags.u)
608	{
609	RTLogPrintf("!! rflags differs - iem=%08llx em=%08llx\n", pIemCtx->rflags.u, pEmCtx->rflags.u);
610	CHECK_BIT_FIELD(rflags.Bits.u1CF);
611	CHECK_BIT_FIELD(rflags.Bits.u1Reserved0);
612	CHECK_BIT_FIELD(rflags.Bits.u1PF);
613	CHECK_BIT_FIELD(rflags.Bits.u1Reserved1);
614	CHECK_BIT_FIELD(rflags.Bits.u1AF);
615	CHECK_BIT_FIELD(rflags.Bits.u1Reserved2);
616	CHECK_BIT_FIELD(rflags.Bits.u1ZF);
617	CHECK_BIT_FIELD(rflags.Bits.u1SF);
618	CHECK_BIT_FIELD(rflags.Bits.u1TF);
619	CHECK_BIT_FIELD(rflags.Bits.u1IF);
620	CHECK_BIT_FIELD(rflags.Bits.u1DF);
621	CHECK_BIT_FIELD(rflags.Bits.u1OF);
622	CHECK_BIT_FIELD(rflags.Bits.u2IOPL);
623	CHECK_BIT_FIELD(rflags.Bits.u1NT);
624	CHECK_BIT_FIELD(rflags.Bits.u1Reserved3);
625	CHECK_BIT_FIELD(rflags.Bits.u1RF);
626	CHECK_BIT_FIELD(rflags.Bits.u1VM);
627	CHECK_BIT_FIELD(rflags.Bits.u1AC);
628	CHECK_BIT_FIELD(rflags.Bits.u1VIF);
629	CHECK_BIT_FIELD(rflags.Bits.u1VIP);
630	CHECK_BIT_FIELD(rflags.Bits.u1ID);
631	}
632
633	if (!g_fIgnoreRaxRdx)
634	CHECK_FIELD(rax);
635	CHECK_FIELD(rcx);
636	if (!g_fIgnoreRaxRdx)
637	CHECK_FIELD(rdx);
638	CHECK_FIELD(rbx);
639	CHECK_FIELD(rsp);
640	CHECK_FIELD(rbp);
641	CHECK_FIELD(rsi);
642	CHECK_FIELD(rdi);
643	CHECK_FIELD(r8);
644	CHECK_FIELD(r9);
645	CHECK_FIELD(r10);
646	CHECK_FIELD(r11);
647	CHECK_FIELD(r12);
648	CHECK_FIELD(r13);
649	CHECK_SEL(cs);
650	CHECK_SEL(ss);
651	CHECK_SEL(ds);
652	CHECK_SEL(es);
653	CHECK_SEL(fs);
654	CHECK_SEL(gs);
655	CHECK_FIELD(cr0);
656	CHECK_FIELD(cr2);
657	CHECK_FIELD(cr3);
658	CHECK_FIELD(cr4);
659	CHECK_FIELD(dr[0]);
660	CHECK_FIELD(dr[1]);
661	CHECK_FIELD(dr[2]);
662	CHECK_FIELD(dr[3]);
663	CHECK_FIELD(dr[6]);
664	CHECK_FIELD(dr[7]);
665	CHECK_FIELD(gdtr.cbGdt);
666	CHECK_FIELD(gdtr.pGdt);
667	CHECK_FIELD(idtr.cbIdt);
668	CHECK_FIELD(idtr.pIdt);
669	CHECK_SEL(ldtr);
670	CHECK_SEL(tr);
671	CHECK_FIELD(SysEnter.cs);
672	CHECK_FIELD(SysEnter.eip);
673	CHECK_FIELD(SysEnter.esp);
674	CHECK_FIELD(msrEFER);
675	CHECK_FIELD(msrSTAR);
676	CHECK_FIELD(msrPAT);
677	CHECK_FIELD(msrLSTAR);
678	CHECK_FIELD(msrCSTAR);
679	CHECK_FIELD(msrSFMASK);
680	CHECK_FIELD(msrKERNELGSBASE);
681
682	# undef CHECK_FIELD
683	# undef CHECK_BIT_FIELD
684	}
685	}
686	#endif /* VBOX_COMPARE_IEM_AND_EM */
687
688
689	/**
690	* Interprets the current instruction.
691	*
692	* @returns VBox status code.
693	* @retval VINF_* Scheduling instructions.
694	* @retval VERR_EM_INTERPRETER Something we can't cope with.
695	* @retval VERR_* Fatal errors.
696	*
697	* @param pVCpu Pointer to the VMCPU.
698	* @param pRegFrame The register frame.
699	* Updates the EIP if an instruction was executed successfully.
700	* @param pvFault The fault address (CR2).
701	* @param pcbSize Size of the write (if applicable).
702	*
703	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
704	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
705	* to worry about e.g. invalid modrm combinations (!)
706	*/
707	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstruction(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault)
708	{
709	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
710	LogFlow(("EMInterpretInstruction %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
711	#ifdef VBOX_WITH_IEM
712	NOREF(pvFault);
713
714	# ifdef VBOX_COMPARE_IEM_AND_EM
715	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
716	g_IncomingCtx = *pCtx;
717	g_fIncomingFFs = pVCpu->fLocalForcedActions;
718	g_cbEmWrote = g_cbIemWrote = 0;
719
720	# ifdef VBOX_COMPARE_IEM_FIRST
721	/* IEM */
722	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
723	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
724	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
725	rcIem = VERR_EM_INTERPRETER;
726	g_IemCtx = *pCtx;
727	g_fIemFFs = pVCpu->fLocalForcedActions;
728	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
729	*pCtx = g_IncomingCtx;
730	# endif
731
732	/* EM */
733	RTGCPTR pbCode;
734	VBOXSTRICTRC rcEm = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
735	if (RT_SUCCESS(rcEm))
736	{
737	uint32_t cbOp;
738	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
739	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
740	rcEm = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
741	if (RT_SUCCESS(rcEm))
742	{
743	Assert(cbOp == pDis->cbInstr);
744	uint32_t cbIgnored;
745	rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbIgnored);
746	if (RT_SUCCESS(rcEm))
747	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
748
749	}
750	rcEm = VERR_EM_INTERPRETER;
751	}
752	else
753	rcEm = VERR_EM_INTERPRETER;
754	# ifdef VBOX_SAME_AS_EM
755	if (rcEm == VERR_EM_INTERPRETER)
756	{
757	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
758	return rcEm;
759	}
760	# endif
761	g_EmCtx = *pCtx;
762	g_fEmFFs = pVCpu->fLocalForcedActions;
763	VBOXSTRICTRC rc = rcEm;
764
765	# ifdef VBOX_COMPARE_IEM_LAST
766	/* IEM */
767	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
768	*pCtx = g_IncomingCtx;
769	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
770	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
771	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
772	rcIem = VERR_EM_INTERPRETER;
773	g_IemCtx = *pCtx;
774	g_fIemFFs = pVCpu->fLocalForcedActions;
775	rc = rcIem;
776	# endif
777
778	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
779	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, 0, 0);
780	# endif
781
782	# else
783	VBOXSTRICTRC rc = IEMExecOneBypassEx(pVCpu, pRegFrame, NULL);
784	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
785	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
786	rc = VERR_EM_INTERPRETER;
787	# endif
788	if (rc != VINF_SUCCESS)
789	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
790
791	return rc;
792	#else
793	RTGCPTR pbCode;
794	VBOXSTRICTRC rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
795	if (RT_SUCCESS(rc))
796	{
797	uint32_t cbOp;
798	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
799	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
800	rc = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
801	if (RT_SUCCESS(rc))
802	{
803	Assert(cbOp == pDis->cbInstr);
804	uint32_t cbIgnored;
805	rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbIgnored);
806	if (RT_SUCCESS(rc))
807	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
808
809	return rc;
810	}
811	}
812	return VERR_EM_INTERPRETER;
813	#endif
814	}
815
816
817	/**
818	* Interprets the current instruction.
819	*
820	* @returns VBox status code.
821	* @retval VINF_* Scheduling instructions.
822	* @retval VERR_EM_INTERPRETER Something we can't cope with.
823	* @retval VERR_* Fatal errors.
824	*
825	* @param pVM Pointer to the VM.
826	* @param pVCpu Pointer to the VMCPU.
827	* @param pRegFrame The register frame.
828	* Updates the EIP if an instruction was executed successfully.
829	* @param pvFault The fault address (CR2).
830	* @param pcbWritten Size of the write (if applicable).
831	*
832	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
833	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
834	* to worry about e.g. invalid modrm combinations (!)
835	*/
836	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionEx(PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbWritten)
837	{
838	LogFlow(("EMInterpretInstructionEx %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
839	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
840	#ifdef VBOX_WITH_IEM
841	NOREF(pvFault);
842
843	# ifdef VBOX_COMPARE_IEM_AND_EM
844	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
845	g_IncomingCtx = *pCtx;
846	g_fIncomingFFs = pVCpu->fLocalForcedActions;
847	g_cbEmWrote = g_cbIemWrote = 0;
848
849	# ifdef VBOX_COMPARE_IEM_FIRST
850	/* IEM */
851	uint32_t cbIemWritten = 0;
852	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, &cbIemWritten);
853	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
854	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
855	rcIem = VERR_EM_INTERPRETER;
856	g_IemCtx = *pCtx;
857	g_fIemFFs = pVCpu->fLocalForcedActions;
858	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
859	*pCtx = g_IncomingCtx;
860	# endif
861
862	/* EM */
863	uint32_t cbEmWritten = 0;
864	RTGCPTR pbCode;
865	VBOXSTRICTRC rcEm = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
866	if (RT_SUCCESS(rcEm))
867	{
868	uint32_t cbOp;
869	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
870	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
871	rcEm = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
872	if (RT_SUCCESS(rcEm))
873	{
874	Assert(cbOp == pDis->cbInstr);
875	rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, &cbEmWritten);
876	if (RT_SUCCESS(rcEm))
877	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
878
879	}
880	else
881	rcEm = VERR_EM_INTERPRETER;
882	}
883	else
884	rcEm = VERR_EM_INTERPRETER;
885	# ifdef VBOX_SAME_AS_EM
886	if (rcEm == VERR_EM_INTERPRETER)
887	{
888	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
889	return rcEm;
890	}
891	# endif
892	g_EmCtx = *pCtx;
893	g_fEmFFs = pVCpu->fLocalForcedActions;
894	*pcbWritten = cbEmWritten;
895	VBOXSTRICTRC rc = rcEm;
896
897	# ifdef VBOX_COMPARE_IEM_LAST
898	/* IEM */
899	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
900	*pCtx = g_IncomingCtx;
901	uint32_t cbIemWritten = 0;
902	VBOXSTRICTRC rcIem = IEMExecOneBypassEx(pVCpu, pRegFrame, &cbIemWritten);
903	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
904	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
905	rcIem = VERR_EM_INTERPRETER;
906	g_IemCtx = *pCtx;
907	g_fIemFFs = pVCpu->fLocalForcedActions;
908	*pcbWritten = cbIemWritten;
909	rc = rcIem;
910	# endif
911
912	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
913	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, cbEmWritten, cbIemWritten);
914	# endif
915
916	# else
917	VBOXSTRICTRC rc = IEMExecOneBypassEx(pVCpu, pRegFrame, pcbWritten);
918	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
919	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
920	rc = VERR_EM_INTERPRETER;
921	# endif
922	if (rc != VINF_SUCCESS)
923	Log(("EMInterpretInstructionEx: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
924
925	return rc;
926	#else
927	RTGCPTR pbCode;
928	VBOXSTRICTRC rc = SELMToFlatEx(pVCpu, DISSELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
929	if (RT_SUCCESS(rc))
930	{
931	uint32_t cbOp;
932	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
933	pDis->uCpuMode = CPUMGetGuestDisMode(pVCpu);
934	rc = emDisCoreOne(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
935	if (RT_SUCCESS(rc))
936	{
937	Assert(cbOp == pDis->cbInstr);
938	rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, pcbWritten);
939	if (RT_SUCCESS(rc))
940	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
941
942	return rc;
943	}
944	}
945	return VERR_EM_INTERPRETER;
946	#endif
947	}
948
949
950	/**
951	* Interprets the current instruction using the supplied DISCPUSTATE structure.
952	*
953	* IP/EIP/RIP IS updated!
954	*
955	* @returns VBox strict status code.
956	* @retval VINF_* Scheduling instructions. When these are returned, it
957	* starts to get a bit tricky to know whether code was
958	* executed or not... We'll address this when it becomes a problem.
959	* @retval VERR_EM_INTERPRETER Something we can't cope with.
960	* @retval VERR_* Fatal errors.
961	*
962	* @param pVM Pointer to the VM.
963	* @param pVCpu Pointer to the VMCPU.
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 pcbSize Size of the write (if applicable).
969	* @param enmCodeType Code type (user/supervisor)
970	*
971	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
972	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
973	* to worry about e.g. invalid modrm combinations (!)
974	*
975	* @todo At this time we do NOT check if the instruction overwrites vital information.
976	* Make sure this can't happen!! (will add some assertions/checks later)
977	*/
978	VMM_INT_DECL(VBOXSTRICTRC) EMInterpretInstructionDisasState(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
979	RTGCPTR pvFault, EMCODETYPE enmCodeType)
980	{
981	LogFlow(("EMInterpretInstructionDisasState %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
982	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
983	#ifdef VBOX_WITH_IEM
984	NOREF(pDis); NOREF(pvFault); NOREF(enmCodeType);
985
986	# ifdef VBOX_COMPARE_IEM_AND_EM
987	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
988	g_IncomingCtx = *pCtx;
989	g_fIncomingFFs = pVCpu->fLocalForcedActions;
990	g_cbEmWrote = g_cbIemWrote = 0;
991
992	# ifdef VBOX_COMPARE_IEM_FIRST
993	VBOXSTRICTRC rcIem = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
994	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
995	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
996	rcIem = VERR_EM_INTERPRETER;
997	g_IemCtx = *pCtx;
998	g_fIemFFs = pVCpu->fLocalForcedActions;
999	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
1000	*pCtx = g_IncomingCtx;
1001	# endif
1002
1003	/* EM */
1004	uint32_t cbIgnored;
1005	VBOXSTRICTRC rcEm = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, enmCodeType, &cbIgnored);
1006	if (RT_SUCCESS(rcEm))
1007	pRegFrame->rip += pDis->cbInstr; /* Move on to the next instruction. */
1008	# ifdef VBOX_SAME_AS_EM
1009	if (rcEm == VERR_EM_INTERPRETER)
1010	{
1011	Log(("EMInterpretInstruction: returns %Rrc\n", VBOXSTRICTRC_VAL(rcEm)));
1012	return rcEm;
1013	}
1014	# endif
1015	g_EmCtx = *pCtx;
1016	g_fEmFFs = pVCpu->fLocalForcedActions;
1017	VBOXSTRICTRC rc = rcEm;
1018
1019	# ifdef VBOX_COMPARE_IEM_LAST
1020	/* IEM */
1021	pVCpu->fLocalForcedActions = (pVCpu->fLocalForcedActions & ~g_fInterestingFFs) \| (g_fIncomingFFs & g_fInterestingFFs);
1022	*pCtx = g_IncomingCtx;
1023	VBOXSTRICTRC rcIem = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
1024	if (RT_UNLIKELY( rcIem == VERR_IEM_ASPECT_NOT_IMPLEMENTED
1025	\|\| rcIem == VERR_IEM_INSTR_NOT_IMPLEMENTED))
1026	rcIem = VERR_EM_INTERPRETER;
1027	g_IemCtx = *pCtx;
1028	g_fIemFFs = pVCpu->fLocalForcedActions;
1029	rc = rcIem;
1030	# endif
1031
1032	# if defined(VBOX_COMPARE_IEM_LAST) \|\| defined(VBOX_COMPARE_IEM_FIRST)
1033	emCompareWithIem(pVCpu, &g_EmCtx, &g_IemCtx, rcEm, rcIem, 0, 0);
1034	# endif
1035
1036	# else
1037	VBOXSTRICTRC rc = IEMExecOneBypassWithPrefetchedByPC(pVCpu, pRegFrame, pRegFrame->rip, pDis->abInstr, pDis->cbCachedInstr);
1038	if (RT_UNLIKELY( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
1039	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED))
1040	rc = VERR_EM_INTERPRETER;
1041	# endif
1042
1043	if (rc != VINF_SUCCESS)
1044	Log(("EMInterpretInstructionDisasState: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
1045
1046	return rc;
1047	#else
1048	uint32_t cbIgnored;
1049	VBOXSTRICTRC rc = emInterpretInstructionCPUOuter(pVCpu, pDis, pRegFrame, pvFault, enmCodeType, &cbIgnored);
1050	if (RT_SUCCESS(rc))
1051	pRegFrame->rip += pDis->cbInstr; /* Move on to the next instruction. */
1052	return rc;
1053	#endif
1054	}
1055
1056	#ifdef IN_RC
1057
1058	DECLINLINE(int) emRCStackRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCPTR GCPtrSrc, uint32_t cb)
1059	{
1060	int rc = MMGCRamRead(pVM, pvDst, (void *)(uintptr_t)GCPtrSrc, cb);
1061	if (RT_LIKELY(rc != VERR_ACCESS_DENIED))
1062	return rc;
1063	return PGMPhysInterpretedReadNoHandlers(pVCpu, pCtxCore, pvDst, GCPtrSrc, cb, /fMayTrap/ false);
1064	}
1065
1066
1067	/**
1068	* Interpret IRET (currently only to V86 code) - PATM only.
1069	*
1070	* @returns VBox status code.
1071	* @param pVM Pointer to the VM.
1072	* @param pVCpu Pointer to the VMCPU.
1073	* @param pRegFrame The register frame.
1074	*
1075	*/
1076	VMM_INT_DECL(int) EMInterpretIretV86ForPatm(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1077	{
1078	RTGCUINTPTR pIretStack = (RTGCUINTPTR)pRegFrame->esp;
1079	RTGCUINTPTR eip, cs, esp, ss, eflags, ds, es, fs, gs, uMask;
1080	int rc;
1081
1082	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1083	Assert(!CPUMIsGuestIn64BitCode(pVCpu));
1084	/** @todo Rainy day: Test what happens when VERR_EM_INTERPRETER is returned by
1085	* this function. Fear that it may guru on us, thus not converted to
1086	* IEM. */
1087
1088	rc = emRCStackRead(pVM, pVCpu, pRegFrame, &eip, (RTGCPTR)pIretStack , 4);
1089	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &cs, (RTGCPTR)(pIretStack + 4), 4);
1090	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &eflags, (RTGCPTR)(pIretStack + 8), 4);
1091	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1092	AssertReturn(eflags & X86_EFL_VM, VERR_EM_INTERPRETER);
1093
1094	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &esp, (RTGCPTR)(pIretStack + 12), 4);
1095	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ss, (RTGCPTR)(pIretStack + 16), 4);
1096	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &es, (RTGCPTR)(pIretStack + 20), 4);
1097	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ds, (RTGCPTR)(pIretStack + 24), 4);
1098	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &fs, (RTGCPTR)(pIretStack + 28), 4);
1099	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &gs, (RTGCPTR)(pIretStack + 32), 4);
1100	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1101
1102	pRegFrame->eip = eip & 0xffff;
1103	pRegFrame->cs.Sel = cs;
1104
1105	/* Mask away all reserved bits */
1106	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;
1107	eflags &= uMask;
1108
1109	CPUMRawSetEFlags(pVCpu, eflags);
1110	Assert((pRegFrame->eflags.u32 & (X86_EFL_IF\|X86_EFL_IOPL)) == X86_EFL_IF);
1111
1112	pRegFrame->esp = esp;
1113	pRegFrame->ss.Sel = ss;
1114	pRegFrame->ds.Sel = ds;
1115	pRegFrame->es.Sel = es;
1116	pRegFrame->fs.Sel = fs;
1117	pRegFrame->gs.Sel = gs;
1118
1119	return VINF_SUCCESS;
1120	}
1121
1122	/**
1123	* IRET Emulation.
1124	*/
1125	static int emInterpretIret(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1126	{
1127	#ifdef VBOX_WITH_RAW_RING1
1128	NOREF(pvFault); NOREF(pcbSize);
1129	if (EMIsRawRing1Enabled(pVM))
1130	{
1131	RTGCUINTPTR pIretStack = (RTGCUINTPTR)pRegFrame->esp;
1132	RTGCUINTPTR eip, cs, esp, ss, eflags, uMask;
1133	int rc;
1134	uint32_t cpl, rpl;
1135
1136	/* We only execute 32-bits protected mode code in raw mode, so no need to bother to check for 16-bits code here. */
1137	/* @todo: we don't verify all the edge cases that generate #GP faults */
1138
1139	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1140	Assert(!CPUMIsGuestIn64BitCode(pVCpu));
1141	/** @todo Rainy day: Test what happens when VERR_EM_INTERPRETER is returned by
1142	* this function. Fear that it may guru on us, thus not converted to
1143	* IEM. */
1144
1145	rc = emRCStackRead(pVM, pVCpu, pRegFrame, &eip, (RTGCPTR)pIretStack , 4);
1146	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &cs, (RTGCPTR)(pIretStack + 4), 4);
1147	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &eflags, (RTGCPTR)(pIretStack + 8), 4);
1148	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1149	AssertReturn(eflags & X86_EFL_VM, VERR_EM_INTERPRETER);
1150
1151	/* Deal with V86 above. */
1152	if (eflags & X86_EFL_VM)
1153	return EMInterpretIretV86ForPatm(pVM, pVCpu, pRegFrame);
1154
1155	cpl = CPUMRCGetGuestCPL(pVCpu, pRegFrame);
1156	rpl = cs & X86_SEL_RPL;
1157
1158	Log(("emInterpretIret: iret to CS:EIP=%04X:%08X eflags=%x\n", cs, eip, eflags));
1159	if (rpl != cpl)
1160	{
1161	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &esp, (RTGCPTR)(pIretStack + 12), 4);
1162	rc \|= emRCStackRead(pVM, pVCpu, pRegFrame, &ss, (RTGCPTR)(pIretStack + 16), 4);
1163	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1164	Log(("emInterpretIret: return to different privilege level (rpl=%d cpl=%d)\n", rpl, cpl));
1165	Log(("emInterpretIret: SS:ESP=%04X:08X\n", ss, esp));
1166	pRegFrame->ss.Sel = ss;
1167	pRegFrame->esp = esp;
1168	}
1169	pRegFrame->cs.Sel = cs;
1170	pRegFrame->eip = eip;
1171
1172	/* Adjust CS & SS as required. */
1173	CPUMRCRecheckRawState(pVCpu, pRegFrame);
1174
1175	/* Mask away all reserved bits */
1176	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;
1177	eflags &= uMask;
1178
1179	CPUMRawSetEFlags(pVCpu, eflags);
1180	Assert((pRegFrame->eflags.u32 & (X86_EFL_IF\|X86_EFL_IOPL)) == X86_EFL_IF);
1181	return VINF_SUCCESS;
1182	}
1183	#else
1184	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
1185	#endif
1186	return VERR_EM_INTERPRETER;
1187	}
1188
1189	#endif /* IN_RC */
1190
1191
1192
1193	/*
1194	*
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	* Old interpreter primitives used by HM, move/eliminate later.
1200	*
1201	*/
1202
1203
1204	/**
1205	* Interpret CPUID given the parameters in the CPU context.
1206	*
1207	* @returns VBox status code.
1208	* @param pVM Pointer to the VM.
1209	* @param pVCpu Pointer to the VMCPU.
1210	* @param pRegFrame The register frame.
1211	*
1212	*/
1213	VMM_INT_DECL(int) EMInterpretCpuId(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1214	{
1215	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1216	uint32_t iLeaf = pRegFrame->eax;
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 &= UINT64_C(0x00000000ffffffff);
1223	pRegFrame->rdx = 0;
1224
1225	/* Note: operates the same in 64 and non-64 bits mode. */
1226	CPUMGetGuestCpuId(pVCpu, iLeaf, &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 Pointer to the VM.
1237	* @param pVCpu Pointer to the VMCPU.
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 Pointer to the VM.
1267	* @param pVCpu Pointer to the VMCPU.
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	CPUMQueryGuestMsr(pVCpu, MSR_K8_TSC_AUX, &pCtx->rcx);
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 Pointer to the VM.
1305	* @param pVCpu Pointer to the VMCPU.
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 ecx
1326	* 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, &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, &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, &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 Pointer to the VM.
1408	* @param pVCpu Pointer to the VMCPU.
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	/**
1435	* Update CRx.
1436	*
1437	* @returns VBox status code.
1438	* @param pVM Pointer to the VM.
1439	* @param pVCpu Pointer to the VMCPU.
1440	* @param pRegFrame The register frame.
1441	* @param DestRegCRx CRx register index (DISUSE_REG_CR*)
1442	* @param val New CRx value
1443	*
1444	*/
1445	static int emUpdateCRx(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint64_t val)
1446	{
1447	uint64_t oldval;
1448	uint64_t msrEFER;
1449	uint32_t fValid;
1450	int rc, rc2;
1451	NOREF(pVM);
1452
1453	/** @todo Clean up this mess. */
1454	LogFlow(("EMInterpretCRxWrite at %RGv CR%d <- %RX64\n", (RTGCPTR)pRegFrame->rip, DestRegCrx, val));
1455	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1456	switch (DestRegCrx)
1457	{
1458	case DISCREG_CR0:
1459	oldval = CPUMGetGuestCR0(pVCpu);
1460	#ifdef IN_RC
1461	/* CR0.WP and CR0.AM changes require a reschedule run in ring 3. */
1462	if ( (val & (X86_CR0_WP \| X86_CR0_AM))
1463	!= (oldval & (X86_CR0_WP \| X86_CR0_AM)))
1464	return VERR_EM_INTERPRETER;
1465	#endif
1466	rc = VINF_SUCCESS;
1467	#if !defined(VBOX_COMPARE_IEM_AND_EM) \|\| !defined(VBOX_COMPARE_IEM_LAST)
1468	CPUMSetGuestCR0(pVCpu, val);
1469	#else
1470	CPUMQueryGuestCtxPtr(pVCpu)->cr0 = val \| X86_CR0_ET;
1471	#endif
1472	val = CPUMGetGuestCR0(pVCpu);
1473	if ( (oldval & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE))
1474	!= (val & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE)))
1475	{
1476	/* global flush */
1477	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
1478	AssertRCReturn(rc, rc);
1479	}
1480
1481	/* Deal with long mode enabling/disabling. */
1482	msrEFER = CPUMGetGuestEFER(pVCpu);
1483	if (msrEFER & MSR_K6_EFER_LME)
1484	{
1485	if ( !(oldval & X86_CR0_PG)
1486	&& (val & X86_CR0_PG))
1487	{
1488	/* Illegal to have an active 64 bits CS selector (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
1489	if (pRegFrame->cs.Attr.n.u1Long)
1490	{
1491	AssertMsgFailed(("Illegal enabling of paging with CS.u1Long = 1!!\n"));
1492	return VERR_EM_INTERPRETER; /** @todo generate #GP(0) */
1493	}
1494
1495	/* Illegal to switch to long mode before activating PAE first (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
1496	if (!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PAE))
1497	{
1498	AssertMsgFailed(("Illegal enabling of paging with PAE disabled!!\n"));
1499	return VERR_EM_INTERPRETER; /** @todo generate #GP(0) */
1500	}
1501	msrEFER \|= MSR_K6_EFER_LMA;
1502	}
1503	else
1504	if ( (oldval & X86_CR0_PG)
1505	&& !(val & X86_CR0_PG))
1506	{
1507	msrEFER &= ~MSR_K6_EFER_LMA;
1508	/** @todo Do we need to cut off rip here? High dword of rip is undefined, so it shouldn't really matter. */
1509	}
1510	CPUMSetGuestEFER(pVCpu, msrEFER);
1511	}
1512	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
1513	return rc2 == VINF_SUCCESS ? rc : rc2;
1514
1515	case DISCREG_CR2:
1516	rc = CPUMSetGuestCR2(pVCpu, val); AssertRC(rc);
1517	return VINF_SUCCESS;
1518
1519	case DISCREG_CR3:
1520	/* Reloading the current CR3 means the guest just wants to flush the TLBs */
1521	rc = CPUMSetGuestCR3(pVCpu, val); AssertRC(rc);
1522	if (CPUMGetGuestCR0(pVCpu) & X86_CR0_PG)
1523	{
1524	/* flush */
1525	rc = PGMFlushTLB(pVCpu, val, !(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE));
1526	AssertRC(rc);
1527	}
1528	return rc;
1529
1530	case DISCREG_CR4:
1531	oldval = CPUMGetGuestCR4(pVCpu);
1532	rc = CPUMSetGuestCR4(pVCpu, val); AssertRC(rc);
1533	val = CPUMGetGuestCR4(pVCpu);
1534
1535	/* Illegal to disable PAE when long mode is active. (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
1536	msrEFER = CPUMGetGuestEFER(pVCpu);
1537	if ( (msrEFER & MSR_K6_EFER_LMA)
1538	&& (oldval & X86_CR4_PAE)
1539	&& !(val & X86_CR4_PAE))
1540	{
1541	return VERR_EM_INTERPRETER; /** @todo generate #GP(0) */
1542	}
1543
1544	/* From IEM iemCImpl_load_CrX. */
1545	/** @todo Check guest CPUID bits for determining corresponding valid bits. */
1546	fValid = X86_CR4_VME \| X86_CR4_PVI
1547	\| X86_CR4_TSD \| X86_CR4_DE
1548	\| X86_CR4_PSE \| X86_CR4_PAE
1549	\| X86_CR4_MCE \| X86_CR4_PGE
1550	\| X86_CR4_PCE \| X86_CR4_OSFSXR
1551	\| X86_CR4_OSXMMEEXCPT;
1552	//if (xxx)
1553	// fValid \|= X86_CR4_VMXE;
1554	//if (xxx)
1555	// fValid \|= X86_CR4_OSXSAVE;
1556	if (val & ~(uint64_t)fValid)
1557	{
1558	Log(("Trying to set reserved CR4 bits: NewCR4=%#llx InvalidBits=%#llx\n", val, val & ~(uint64_t)fValid));
1559	return VERR_EM_INTERPRETER; /** @todo generate #GP(0) */
1560	}
1561
1562	rc = VINF_SUCCESS;
1563	if ( (oldval & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE))
1564	!= (val & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE)))
1565	{
1566	/* global flush */
1567	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
1568	AssertRCReturn(rc, rc);
1569	}
1570
1571	/* Feeling extremely lazy. */
1572	# ifdef IN_RC
1573	if ( (oldval & (X86_CR4_OSFSXR\|X86_CR4_OSXMMEEXCPT\|X86_CR4_PCE\|X86_CR4_MCE\|X86_CR4_PAE\|X86_CR4_DE\|X86_CR4_TSD\|X86_CR4_PVI\|X86_CR4_VME))
1574	!= (val & (X86_CR4_OSFSXR\|X86_CR4_OSXMMEEXCPT\|X86_CR4_PCE\|X86_CR4_MCE\|X86_CR4_PAE\|X86_CR4_DE\|X86_CR4_TSD\|X86_CR4_PVI\|X86_CR4_VME)))
1575	{
1576	Log(("emInterpretMovCRx: CR4: %#RX64->%#RX64 => R3\n", oldval, val));
1577	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
1578	}
1579	# endif
1580	# ifdef VBOX_WITH_RAW_MODE
1581	if (((val ^ oldval) & X86_CR4_VME) && !HMIsEnabled(pVM))
1582	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
1583	# endif
1584
1585	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
1586	return rc2 == VINF_SUCCESS ? rc : rc2;
1587
1588	case DISCREG_CR8:
1589	return PDMApicSetTPR(pVCpu, val << 4); /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */
1590
1591	default:
1592	AssertFailed();
1593	case DISCREG_CR1: /* illegal op */
1594	break;
1595	}
1596	return VERR_EM_INTERPRETER;
1597	}
1598
1599
1600	/**
1601	* Interpret CRx write.
1602	*
1603	* @returns VBox status code.
1604	* @param pVM Pointer to the VM.
1605	* @param pVCpu Pointer to the VMCPU.
1606	* @param pRegFrame The register frame.
1607	* @param DestRegCRx CRx register index (DISUSE_REG_CR*)
1608	* @param SrcRegGen General purpose register index (USE_REG_E**))
1609	*
1610	*/
1611	VMM_INT_DECL(int) EMInterpretCRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint32_t SrcRegGen)
1612	{
1613	uint64_t val;
1614	int rc;
1615	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1616
1617	if (CPUMIsGuestIn64BitCode(pVCpu))
1618	rc = DISFetchReg64(pRegFrame, SrcRegGen, &val);
1619	else
1620	{
1621	uint32_t val32;
1622	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
1623	val = val32;
1624	}
1625
1626	if (RT_SUCCESS(rc))
1627	return emUpdateCRx(pVM, pVCpu, pRegFrame, DestRegCrx, val);
1628
1629	return VERR_EM_INTERPRETER;
1630	}
1631
1632	/**
1633	* Interpret LMSW.
1634	*
1635	* @returns VBox status code.
1636	* @param pVM Pointer to the VM.
1637	* @param pVCpu Pointer to the VMCPU.
1638	* @param pRegFrame The register frame.
1639	* @param u16Data LMSW source data.
1640	*
1641	*/
1642	VMM_INT_DECL(int) EMInterpretLMSW(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint16_t u16Data)
1643	{
1644	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1645	uint64_t OldCr0 = CPUMGetGuestCR0(pVCpu);
1646
1647	/* Only PE, MP, EM and TS can be changed; note that PE can't be cleared by this instruction. */
1648	uint64_t NewCr0 = ( OldCr0 & ~( X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS))
1649	\| (u16Data & (X86_CR0_PE \| X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS));
1650
1651	return emUpdateCRx(pVM, pVCpu, pRegFrame, DISCREG_CR0, NewCr0);
1652	}
1653
1654
1655	/**
1656	* Interpret CLTS.
1657	*
1658	* @returns VBox status code.
1659	* @param pVM Pointer to the VM.
1660	* @param pVCpu Pointer to the VMCPU.
1661	*
1662	*/
1663	VMM_INT_DECL(int) EMInterpretCLTS(PVM pVM, PVMCPU pVCpu)
1664	{
1665	NOREF(pVM);
1666
1667	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
1668	if (!(cr0 & X86_CR0_TS))
1669	return VINF_SUCCESS;
1670	return CPUMSetGuestCR0(pVCpu, cr0 & ~X86_CR0_TS);
1671	}
1672
1673
1674	#ifdef LOG_ENABLED
1675	static const char *emMSRtoString(uint32_t uMsr)
1676	{
1677	switch (uMsr)
1678	{
1679	case MSR_IA32_APICBASE: return "MSR_IA32_APICBASE";
1680	case MSR_IA32_CR_PAT: return "MSR_IA32_CR_PAT";
1681	case MSR_IA32_SYSENTER_CS: return "MSR_IA32_SYSENTER_CS";
1682	case MSR_IA32_SYSENTER_EIP: return "MSR_IA32_SYSENTER_EIP";
1683	case MSR_IA32_SYSENTER_ESP: return "MSR_IA32_SYSENTER_ESP";
1684	case MSR_K6_EFER: return "MSR_K6_EFER";
1685	case MSR_K8_SF_MASK: return "MSR_K8_SF_MASK";
1686	case MSR_K6_STAR: return "MSR_K6_STAR";
1687	case MSR_K8_LSTAR: return "MSR_K8_LSTAR";
1688	case MSR_K8_CSTAR: return "MSR_K8_CSTAR";
1689	case MSR_K8_FS_BASE: return "MSR_K8_FS_BASE";
1690	case MSR_K8_GS_BASE: return "MSR_K8_GS_BASE";
1691	case MSR_K8_KERNEL_GS_BASE: return "MSR_K8_KERNEL_GS_BASE";
1692	case MSR_K8_TSC_AUX: return "MSR_K8_TSC_AUX";
1693	case MSR_IA32_BIOS_SIGN_ID: return "Unsupported MSR_IA32_BIOS_SIGN_ID";
1694	case MSR_IA32_PLATFORM_ID: return "Unsupported MSR_IA32_PLATFORM_ID";
1695	case MSR_IA32_BIOS_UPDT_TRIG: return "Unsupported MSR_IA32_BIOS_UPDT_TRIG";
1696	case MSR_IA32_TSC: return "MSR_IA32_TSC";
1697	case MSR_IA32_MISC_ENABLE: return "MSR_IA32_MISC_ENABLE";
1698	case MSR_IA32_MTRR_CAP: return "MSR_IA32_MTRR_CAP";
1699	case MSR_IA32_MCG_CAP: return "Unsupported MSR_IA32_MCG_CAP";
1700	case MSR_IA32_MCG_STATUS: return "Unsupported MSR_IA32_MCG_STATUS";
1701	case MSR_IA32_MCG_CTRL: return "Unsupported MSR_IA32_MCG_CTRL";
1702	case MSR_IA32_MTRR_DEF_TYPE: return "MSR_IA32_MTRR_DEF_TYPE";
1703	case MSR_K7_EVNTSEL0: return "Unsupported MSR_K7_EVNTSEL0";
1704	case MSR_K7_EVNTSEL1: return "Unsupported MSR_K7_EVNTSEL1";
1705	case MSR_K7_EVNTSEL2: return "Unsupported MSR_K7_EVNTSEL2";
1706	case MSR_K7_EVNTSEL3: return "Unsupported MSR_K7_EVNTSEL3";
1707	case MSR_IA32_MC0_CTL: return "Unsupported MSR_IA32_MC0_CTL";
1708	case MSR_IA32_MC0_STATUS: return "Unsupported MSR_IA32_MC0_STATUS";
1709	case MSR_IA32_PERFEVTSEL0: return "Unsupported MSR_IA32_PERFEVTSEL0";
1710	case MSR_IA32_PERFEVTSEL1: return "Unsupported MSR_IA32_PERFEVTSEL1";
1711	case MSR_IA32_PERF_STATUS: return "MSR_IA32_PERF_STATUS";
1712	case MSR_IA32_PLATFORM_INFO: return "MSR_IA32_PLATFORM_INFO";
1713	case MSR_IA32_PERF_CTL: return "Unsupported MSR_IA32_PERF_CTL";
1714	case MSR_K7_PERFCTR0: return "Unsupported MSR_K7_PERFCTR0";
1715	case MSR_K7_PERFCTR1: return "Unsupported MSR_K7_PERFCTR1";
1716	case MSR_K7_PERFCTR2: return "Unsupported MSR_K7_PERFCTR2";
1717	case MSR_K7_PERFCTR3: return "Unsupported MSR_K7_PERFCTR3";
1718	case MSR_IA32_PMC0: return "Unsupported MSR_IA32_PMC0";
1719	case MSR_IA32_PMC1: return "Unsupported MSR_IA32_PMC1";
1720	case MSR_IA32_PMC2: return "Unsupported MSR_IA32_PMC2";
1721	case MSR_IA32_PMC3: return "Unsupported MSR_IA32_PMC3";
1722	}
1723	return "Unknown MSR";
1724	}
1725	#endif /* LOG_ENABLED */
1726
1727
1728	/**
1729	* Interpret RDMSR
1730	*
1731	* @returns VBox status code.
1732	* @param pVM Pointer to the VM.
1733	* @param pVCpu Pointer to the VMCPU.
1734	* @param pRegFrame The register frame.
1735	*/
1736	VMM_INT_DECL(int) EMInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1737	{
1738	NOREF(pVM);
1739
1740	/* Get the current privilege level. */
1741	if (CPUMGetGuestCPL(pVCpu) != 0)
1742	{
1743	Log4(("EM: Refuse RDMSR: CPL != 0\n"));
1744	return VERR_EM_INTERPRETER; /* supervisor only */
1745	}
1746
1747	uint64_t uValue;
1748	int rc = CPUMQueryGuestMsr(pVCpu, pRegFrame->ecx, &uValue);
1749	if (RT_UNLIKELY(rc != VINF_SUCCESS))
1750	{
1751	Assert(rc == VERR_CPUM_RAISE_GP_0);
1752	Log4(("EM: Refuse RDMSR: rc=%Rrc\n", rc));
1753	return VERR_EM_INTERPRETER;
1754	}
1755	pRegFrame->rax = (uint32_t) uValue;
1756	pRegFrame->rdx = (uint32_t)(uValue >> 32);
1757	LogFlow(("EMInterpretRdmsr %s (%x) -> %RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx, uValue));
1758	return rc;
1759	}
1760
1761
1762	/**
1763	* Interpret WRMSR
1764	*
1765	* @returns VBox status code.
1766	* @param pVM Pointer to the VM.
1767	* @param pVCpu Pointer to the VMCPU.
1768	* @param pRegFrame The register frame.
1769	*/
1770	VMM_INT_DECL(int) EMInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1771	{
1772	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1773
1774	/* Check the current privilege level, this instruction is supervisor only. */
1775	if (CPUMGetGuestCPL(pVCpu) != 0)
1776	{
1777	Log4(("EM: Refuse WRMSR: CPL != 0\n"));
1778	return VERR_EM_INTERPRETER; /** @todo raise \#GP(0) */
1779	}
1780
1781	int rc = CPUMSetGuestMsr(pVCpu, pRegFrame->ecx, RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx));
1782	if (rc != VINF_SUCCESS)
1783	{
1784	Assert(rc == VERR_CPUM_RAISE_GP_0);
1785	Log4(("EM: Refuse WRMSR: rc=%d\n", rc));
1786	return VERR_EM_INTERPRETER;
1787	}
1788	LogFlow(("EMInterpretWrmsr %s (%x) val=%RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx,
1789	RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx)));
1790	NOREF(pVM);
1791	return rc;
1792	}
1793
1794
1795	/**
1796	* Interpret CRx read.
1797	*
1798	* @returns VBox status code.
1799	* @param pVM Pointer to the VM.
1800	* @param pVCpu Pointer to the VMCPU.
1801	* @param pRegFrame The register frame.
1802	* @param DestRegGen General purpose register index (USE_REG_E**))
1803	* @param SrcRegCRx CRx register index (DISUSE_REG_CR*)
1804	*
1805	*/
1806	VMM_INT_DECL(int) EMInterpretCRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegCrx)
1807	{
1808	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1809	uint64_t val64;
1810	int rc = CPUMGetGuestCRx(pVCpu, SrcRegCrx, &val64);
1811	AssertMsgRCReturn(rc, ("CPUMGetGuestCRx %d failed\n", SrcRegCrx), VERR_EM_INTERPRETER);
1812	NOREF(pVM);
1813
1814	if (CPUMIsGuestIn64BitCode(pVCpu))
1815	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
1816	else
1817	rc = DISWriteReg32(pRegFrame, DestRegGen, val64);
1818
1819	if (RT_SUCCESS(rc))
1820	{
1821	LogFlow(("MOV_CR: gen32=%d CR=%d val=%RX64\n", DestRegGen, SrcRegCrx, val64));
1822	return VINF_SUCCESS;
1823	}
1824	return VERR_EM_INTERPRETER;
1825	}
1826
1827
1828	/**
1829	* Interpret DRx write.
1830	*
1831	* @returns VBox status code.
1832	* @param pVM Pointer to the VM.
1833	* @param pVCpu Pointer to the VMCPU.
1834	* @param pRegFrame The register frame.
1835	* @param DestRegDRx DRx register index (USE_REG_DR*)
1836	* @param SrcRegGen General purpose register index (USE_REG_E**))
1837	*
1838	*/
1839	VMM_INT_DECL(int) EMInterpretDRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegDrx, uint32_t SrcRegGen)
1840	{
1841	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1842	uint64_t uNewDrX;
1843	int rc;
1844	NOREF(pVM);
1845
1846	if (CPUMIsGuestIn64BitCode(pVCpu))
1847	rc = DISFetchReg64(pRegFrame, SrcRegGen, &uNewDrX);
1848	else
1849	{
1850	uint32_t val32;
1851	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
1852	uNewDrX = val32;
1853	}
1854
1855	if (RT_SUCCESS(rc))
1856	{
1857	if (DestRegDrx == 6)
1858	{
1859	uNewDrX \|= X86_DR6_RA1_MASK;
1860	uNewDrX &= ~X86_DR6_RAZ_MASK;
1861	}
1862	else if (DestRegDrx == 7)
1863	{
1864	uNewDrX \|= X86_DR7_RA1_MASK;
1865	uNewDrX &= ~X86_DR7_RAZ_MASK;
1866	}
1867
1868	/** @todo we don't fail if illegal bits are set/cleared for e.g. dr7 */
1869	rc = CPUMSetGuestDRx(pVCpu, DestRegDrx, uNewDrX);
1870	if (RT_SUCCESS(rc))
1871	return rc;
1872	AssertMsgFailed(("CPUMSetGuestDRx %d failed\n", DestRegDrx));
1873	}
1874	return VERR_EM_INTERPRETER;
1875	}
1876
1877
1878	/**
1879	* Interpret DRx read.
1880	*
1881	* @returns VBox status code.
1882	* @param pVM Pointer to the VM.
1883	* @param pVCpu Pointer to the VMCPU.
1884	* @param pRegFrame The register frame.
1885	* @param DestRegGen General purpose register index (USE_REG_E**))
1886	* @param SrcRegDRx DRx register index (USE_REG_DR*)
1887	*
1888	*/
1889	VMM_INT_DECL(int) EMInterpretDRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegDrx)
1890	{
1891	uint64_t val64;
1892	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
1893	NOREF(pVM);
1894
1895	int rc = CPUMGetGuestDRx(pVCpu, SrcRegDrx, &val64);
1896	AssertMsgRCReturn(rc, ("CPUMGetGuestDRx %d failed\n", SrcRegDrx), VERR_EM_INTERPRETER);
1897	if (CPUMIsGuestIn64BitCode(pVCpu))
1898	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
1899	else
1900	rc = DISWriteReg32(pRegFrame, DestRegGen, (uint32_t)val64);
1901
1902	if (RT_SUCCESS(rc))
1903	return VINF_SUCCESS;
1904
1905	return VERR_EM_INTERPRETER;
1906	}
1907
1908
1909	#if !defined(VBOX_WITH_IEM) \|\| defined(VBOX_COMPARE_IEM_AND_EM)
1910
1911
1912
1913
1914
1915
1916	/*
1917	*
1918	* The old interpreter.
1919	* The old interpreter.
1920	* The old interpreter.
1921	* The old interpreter.
1922	* The old interpreter.
1923	*
1924	*/
1925
1926	DECLINLINE(int) emRamRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCPTR GCPtrSrc, uint32_t cb)
1927	{
1928	#ifdef IN_RC
1929	int rc = MMGCRamRead(pVM, pvDst, (void *)(uintptr_t)GCPtrSrc, cb);
1930	if (RT_LIKELY(rc != VERR_ACCESS_DENIED))
1931	return rc;
1932	/*
1933	* The page pool cache may end up here in some cases because it
1934	* flushed one of the shadow mappings used by the trapping
1935	* instruction and it either flushed the TLB or the CPU reused it.
1936	*/
1937	#else
1938	NOREF(pVM);
1939	#endif
1940	return PGMPhysInterpretedReadNoHandlers(pVCpu, pCtxCore, pvDst, GCPtrSrc, cb, /fMayTrap/ false);
1941	}
1942
1943
1944	DECLINLINE(int) emRamWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, RTGCPTR GCPtrDst, const void *pvSrc, uint32_t cb)
1945	{
1946	/* Don't use MMGCRamWrite here as it does not respect zero pages, shared
1947	pages or write monitored pages. */
1948	NOREF(pVM);
1949	#if !defined(VBOX_COMPARE_IEM_AND_EM) \|\| !defined(VBOX_COMPARE_IEM_LAST)
1950	int rc = PGMPhysInterpretedWriteNoHandlers(pVCpu, pCtxCore, GCPtrDst, pvSrc, cb, /fMayTrap/ false);
1951	#else
1952	int rc = VINF_SUCCESS;
1953	#endif
1954	#ifdef VBOX_COMPARE_IEM_AND_EM
1955	Log(("EM Wrote: %RGv %.*Rhxs rc=%Rrc\n", GCPtrDst, RT_MAX(RT_MIN(cb, 64), 1), pvSrc, rc));
1956	g_cbEmWrote = cb;
1957	memcpy(g_abEmWrote, pvSrc, RT_MIN(cb, sizeof(g_abEmWrote)));
1958	#endif
1959	return rc;
1960	}
1961
1962
1963	/** Convert sel:addr to a flat GC address. */
1964	DECLINLINE(RTGCPTR) emConvertToFlatAddr(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pDis, PDISOPPARAM pParam, RTGCPTR pvAddr)
1965	{
1966	DISSELREG enmPrefixSeg = DISDetectSegReg(pDis, pParam);
1967	return SELMToFlat(pVM, enmPrefixSeg, pRegFrame, pvAddr);
1968	}
1969
1970
1971	#if defined(VBOX_STRICT) \|\| defined(LOG_ENABLED)
1972	/**
1973	* Get the mnemonic for the disassembled instruction.
1974	*
1975	* GC/R0 doesn't include the strings in the DIS tables because
1976	* of limited space.
1977	*/
1978	static const char *emGetMnemonic(PDISCPUSTATE pDis)
1979	{
1980	switch (pDis->pCurInstr->uOpcode)
1981	{
1982	case OP_XCHG: return "Xchg";
1983	case OP_DEC: return "Dec";
1984	case OP_INC: return "Inc";
1985	case OP_POP: return "Pop";
1986	case OP_OR: return "Or";
1987	case OP_AND: return "And";
1988	case OP_MOV: return "Mov";
1989	case OP_INVLPG: return "InvlPg";
1990	case OP_CPUID: return "CpuId";
1991	case OP_MOV_CR: return "MovCRx";
1992	case OP_MOV_DR: return "MovDRx";
1993	case OP_LLDT: return "LLdt";
1994	case OP_LGDT: return "LGdt";
1995	case OP_LIDT: return "LIdt";
1996	case OP_CLTS: return "Clts";
1997	case OP_MONITOR: return "Monitor";
1998	case OP_MWAIT: return "MWait";
1999	case OP_RDMSR: return "Rdmsr";
2000	case OP_WRMSR: return "Wrmsr";
2001	case OP_ADD: return "Add";
2002	case OP_ADC: return "Adc";
2003	case OP_SUB: return "Sub";
2004	case OP_SBB: return "Sbb";
2005	case OP_RDTSC: return "Rdtsc";
2006	case OP_STI: return "Sti";
2007	case OP_CLI: return "Cli";
2008	case OP_XADD: return "XAdd";
2009	case OP_HLT: return "Hlt";
2010	case OP_IRET: return "Iret";
2011	case OP_MOVNTPS: return "MovNTPS";
2012	case OP_STOSWD: return "StosWD";
2013	case OP_WBINVD: return "WbInvd";
2014	case OP_XOR: return "Xor";
2015	case OP_BTR: return "Btr";
2016	case OP_BTS: return "Bts";
2017	case OP_BTC: return "Btc";
2018	case OP_LMSW: return "Lmsw";
2019	case OP_SMSW: return "Smsw";
2020	case OP_CMPXCHG: return pDis->fPrefix & DISPREFIX_LOCK ? "Lock CmpXchg" : "CmpXchg";
2021	case OP_CMPXCHG8B: return pDis->fPrefix & DISPREFIX_LOCK ? "Lock CmpXchg8b" : "CmpXchg8b";
2022
2023	default:
2024	Log(("Unknown opcode %d\n", pDis->pCurInstr->uOpcode));
2025	return "???";
2026	}
2027	}
2028	#endif /* VBOX_STRICT \|\| LOG_ENABLED */
2029
2030
2031	/**
2032	* XCHG instruction emulation.
2033	*/
2034	static int emInterpretXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2035	{
2036	DISQPVPARAMVAL param1, param2;
2037	NOREF(pvFault);
2038
2039	/* Source to make DISQueryParamVal read the register value - ugly hack */
2040	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
2041	if(RT_FAILURE(rc))
2042	return VERR_EM_INTERPRETER;
2043
2044	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2045	if(RT_FAILURE(rc))
2046	return VERR_EM_INTERPRETER;
2047
2048	#ifdef IN_RC
2049	if (TRPMHasTrap(pVCpu))
2050	{
2051	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2052	{
2053	#endif
2054	RTGCPTR pParam1 = 0, pParam2 = 0;
2055	uint64_t valpar1, valpar2;
2056
2057	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
2058	switch(param1.type)
2059	{
2060	case DISQPV_TYPE_IMMEDIATE: /* register type is translated to this one too */
2061	valpar1 = param1.val.val64;
2062	break;
2063
2064	case DISQPV_TYPE_ADDRESS:
2065	pParam1 = (RTGCPTR)param1.val.val64;
2066	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2067	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2068	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2069	if (RT_FAILURE(rc))
2070	{
2071	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2072	return VERR_EM_INTERPRETER;
2073	}
2074	break;
2075
2076	default:
2077	AssertFailed();
2078	return VERR_EM_INTERPRETER;
2079	}
2080
2081	switch(param2.type)
2082	{
2083	case DISQPV_TYPE_ADDRESS:
2084	pParam2 = (RTGCPTR)param2.val.val64;
2085	pParam2 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param2, pParam2);
2086	EM_ASSERT_FAULT_RETURN(pParam2 == pvFault, VERR_EM_INTERPRETER);
2087	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar2, pParam2, param2.size);
2088	if (RT_FAILURE(rc))
2089	{
2090	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2091	}
2092	break;
2093
2094	case DISQPV_TYPE_IMMEDIATE:
2095	valpar2 = param2.val.val64;
2096	break;
2097
2098	default:
2099	AssertFailed();
2100	return VERR_EM_INTERPRETER;
2101	}
2102
2103	/* Write value of parameter 2 to parameter 1 (reg or memory address) */
2104	if (pParam1 == 0)
2105	{
2106	Assert(param1.type == DISQPV_TYPE_IMMEDIATE); /* register actually */
2107	switch(param1.size)
2108	{
2109	case 1: //special case for AH etc
2110	rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t )valpar2); break;
2111	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)valpar2); break;
2112	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)valpar2); break;
2113	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param1.Base.idxGenReg, valpar2); break;
2114	default: AssertFailedReturn(VERR_EM_INTERPRETER);
2115	}
2116	if (RT_FAILURE(rc))
2117	return VERR_EM_INTERPRETER;
2118	}
2119	else
2120	{
2121	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar2, param1.size);
2122	if (RT_FAILURE(rc))
2123	{
2124	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2125	return VERR_EM_INTERPRETER;
2126	}
2127	}
2128
2129	/* Write value of parameter 1 to parameter 2 (reg or memory address) */
2130	if (pParam2 == 0)
2131	{
2132	Assert(param2.type == DISQPV_TYPE_IMMEDIATE); /* register actually */
2133	switch(param2.size)
2134	{
2135	case 1: //special case for AH etc
2136	rc = DISWriteReg8(pRegFrame, pDis->Param2.Base.idxGenReg, (uint8_t )valpar1); break;
2137	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param2.Base.idxGenReg, (uint16_t)valpar1); break;
2138	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param2.Base.idxGenReg, (uint32_t)valpar1); break;
2139	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param2.Base.idxGenReg, valpar1); break;
2140	default: AssertFailedReturn(VERR_EM_INTERPRETER);
2141	}
2142	if (RT_FAILURE(rc))
2143	return VERR_EM_INTERPRETER;
2144	}
2145	else
2146	{
2147	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam2, &valpar1, param2.size);
2148	if (RT_FAILURE(rc))
2149	{
2150	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2151	return VERR_EM_INTERPRETER;
2152	}
2153	}
2154
2155	*pcbSize = param2.size;
2156	return VINF_SUCCESS;
2157	#ifdef IN_RC
2158	}
2159	}
2160	return VERR_EM_INTERPRETER;
2161	#endif
2162	}
2163
2164
2165	/**
2166	* INC and DEC emulation.
2167	*/
2168	static int emInterpretIncDec(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2169	PFNEMULATEPARAM2 pfnEmulate)
2170	{
2171	DISQPVPARAMVAL param1;
2172	NOREF(pvFault);
2173
2174	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2175	if(RT_FAILURE(rc))
2176	return VERR_EM_INTERPRETER;
2177
2178	#ifdef IN_RC
2179	if (TRPMHasTrap(pVCpu))
2180	{
2181	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2182	{
2183	#endif
2184	RTGCPTR pParam1 = 0;
2185	uint64_t valpar1;
2186
2187	if (param1.type == DISQPV_TYPE_ADDRESS)
2188	{
2189	pParam1 = (RTGCPTR)param1.val.val64;
2190	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2191	#ifdef IN_RC
2192	/* Safety check (in theory it could cross a page boundary and fault there though) */
2193	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2194	#endif
2195	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2196	if (RT_FAILURE(rc))
2197	{
2198	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2199	return VERR_EM_INTERPRETER;
2200	}
2201	}
2202	else
2203	{
2204	AssertFailed();
2205	return VERR_EM_INTERPRETER;
2206	}
2207
2208	uint32_t eflags;
2209
2210	eflags = pfnEmulate(&valpar1, param1.size);
2211
2212	/* Write result back */
2213	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2214	if (RT_FAILURE(rc))
2215	{
2216	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2217	return VERR_EM_INTERPRETER;
2218	}
2219
2220	/* Update guest's eflags and finish. */
2221	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2222	\| (eflags & (X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2223
2224	/* All done! */
2225	*pcbSize = param1.size;
2226	return VINF_SUCCESS;
2227	#ifdef IN_RC
2228	}
2229	}
2230	return VERR_EM_INTERPRETER;
2231	#endif
2232	}
2233
2234
2235	/**
2236	* POP Emulation.
2237	*/
2238	static int emInterpretPop(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2239	{
2240	Assert(pDis->uCpuMode != DISCPUMODE_64BIT); /** @todo check */
2241	DISQPVPARAMVAL param1;
2242	NOREF(pvFault);
2243
2244	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2245	if(RT_FAILURE(rc))
2246	return VERR_EM_INTERPRETER;
2247
2248	#ifdef IN_RC
2249	if (TRPMHasTrap(pVCpu))
2250	{
2251	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2252	{
2253	#endif
2254	RTGCPTR pParam1 = 0;
2255	uint32_t valpar1;
2256	RTGCPTR pStackVal;
2257
2258	/* Read stack value first */
2259	if (CPUMGetGuestCodeBits(pVCpu) == 16)
2260	return VERR_EM_INTERPRETER; /* No legacy 16 bits stuff here, please. */
2261
2262	/* Convert address; don't bother checking limits etc, as we only read here */
2263	pStackVal = SELMToFlat(pVM, DISSELREG_SS, pRegFrame, (RTGCPTR)pRegFrame->esp);
2264	if (pStackVal == 0)
2265	return VERR_EM_INTERPRETER;
2266
2267	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pStackVal, param1.size);
2268	if (RT_FAILURE(rc))
2269	{
2270	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2271	return VERR_EM_INTERPRETER;
2272	}
2273
2274	if (param1.type == DISQPV_TYPE_ADDRESS)
2275	{
2276	pParam1 = (RTGCPTR)param1.val.val64;
2277
2278	/* pop [esp+xx] uses esp after the actual pop! */
2279	AssertCompile(DISGREG_ESP == DISGREG_SP);
2280	if ( (pDis->Param1.fUse & DISUSE_BASE)
2281	&& (pDis->Param1.fUse & (DISUSE_REG_GEN16\|DISUSE_REG_GEN32))
2282	&& pDis->Param1.Base.idxGenReg == DISGREG_ESP
2283	)
2284	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + param1.size);
2285
2286	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2287	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault \|\| (RTGCPTR)pRegFrame->esp == pvFault, VERR_EM_INTERPRETER);
2288	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2289	if (RT_FAILURE(rc))
2290	{
2291	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2292	return VERR_EM_INTERPRETER;
2293	}
2294
2295	/* Update ESP as the last step */
2296	pRegFrame->esp += param1.size;
2297	}
2298	else
2299	{
2300	#ifndef DEBUG_bird // annoying assertion.
2301	AssertFailed();
2302	#endif
2303	return VERR_EM_INTERPRETER;
2304	}
2305
2306	/* All done! */
2307	*pcbSize = param1.size;
2308	return VINF_SUCCESS;
2309	#ifdef IN_RC
2310	}
2311	}
2312	return VERR_EM_INTERPRETER;
2313	#endif
2314	}
2315
2316
2317	/**
2318	* XOR/OR/AND Emulation.
2319	*/
2320	static int emInterpretOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2321	PFNEMULATEPARAM3 pfnEmulate)
2322	{
2323	DISQPVPARAMVAL param1, param2;
2324	NOREF(pvFault);
2325
2326	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2327	if(RT_FAILURE(rc))
2328	return VERR_EM_INTERPRETER;
2329
2330	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2331	if(RT_FAILURE(rc))
2332	return VERR_EM_INTERPRETER;
2333
2334	#ifdef IN_RC
2335	if (TRPMHasTrap(pVCpu))
2336	{
2337	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2338	{
2339	#endif
2340	RTGCPTR pParam1;
2341	uint64_t valpar1, valpar2;
2342
2343	if (pDis->Param1.cb != pDis->Param2.cb)
2344	{
2345	if (pDis->Param1.cb < pDis->Param2.cb)
2346	{
2347	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb)); /* should never happen! */
2348	return VERR_EM_INTERPRETER;
2349	}
2350	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2351	pDis->Param2.cb = pDis->Param1.cb;
2352	param2.size = param1.size;
2353	}
2354
2355	/* The destination is always a virtual address */
2356	if (param1.type == DISQPV_TYPE_ADDRESS)
2357	{
2358	pParam1 = (RTGCPTR)param1.val.val64;
2359	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2360	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2361	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2362	if (RT_FAILURE(rc))
2363	{
2364	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2365	return VERR_EM_INTERPRETER;
2366	}
2367	}
2368	else
2369	{
2370	AssertFailed();
2371	return VERR_EM_INTERPRETER;
2372	}
2373
2374	/* Register or immediate data */
2375	switch(param2.type)
2376	{
2377	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2378	valpar2 = param2.val.val64;
2379	break;
2380
2381	default:
2382	AssertFailed();
2383	return VERR_EM_INTERPRETER;
2384	}
2385
2386	LogFlow(("emInterpretOrXorAnd %s %RGv %RX64 - %RX64 size %d (%d)\n", emGetMnemonic(pDis), pParam1, valpar1, valpar2, param2.size, param1.size));
2387
2388	/* Data read, emulate instruction. */
2389	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
2390
2391	LogFlow(("emInterpretOrXorAnd %s result %RX64\n", emGetMnemonic(pDis), valpar1));
2392
2393	/* Update guest's eflags and finish. */
2394	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2395	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2396
2397	/* And write it back */
2398	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2399	if (RT_SUCCESS(rc))
2400	{
2401	/* All done! */
2402	*pcbSize = param2.size;
2403	return VINF_SUCCESS;
2404	}
2405	#ifdef IN_RC
2406	}
2407	}
2408	#endif
2409	return VERR_EM_INTERPRETER;
2410	}
2411
2412
2413	#ifndef VBOX_COMPARE_IEM_AND_EM
2414	/**
2415	* LOCK XOR/OR/AND Emulation.
2416	*/
2417	static int emInterpretLockOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
2418	uint32_t *pcbSize, PFNEMULATELOCKPARAM3 pfnEmulate)
2419	{
2420	void *pvParam1;
2421	DISQPVPARAMVAL param1, param2;
2422	NOREF(pvFault);
2423
2424	#if HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL_IN_R0)
2425	Assert(pDis->Param1.cb <= 4);
2426	#endif
2427
2428	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2429	if(RT_FAILURE(rc))
2430	return VERR_EM_INTERPRETER;
2431
2432	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2433	if(RT_FAILURE(rc))
2434	return VERR_EM_INTERPRETER;
2435
2436	if (pDis->Param1.cb != pDis->Param2.cb)
2437	{
2438	AssertMsgReturn(pDis->Param1.cb >= pDis->Param2.cb, /* should never happen! */
2439	("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb),
2440	VERR_EM_INTERPRETER);
2441
2442	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2443	pDis->Param2.cb = pDis->Param1.cb;
2444	param2.size = param1.size;
2445	}
2446
2447	#ifdef IN_RC
2448	/* Safety check (in theory it could cross a page boundary and fault there though) */
2449	Assert( TRPMHasTrap(pVCpu)
2450	&& (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW));
2451	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
2452	#endif
2453
2454	/* Register and immediate data == DISQPV_TYPE_IMMEDIATE */
2455	AssertReturn(param2.type == DISQPV_TYPE_IMMEDIATE, VERR_EM_INTERPRETER);
2456	RTGCUINTREG ValPar2 = param2.val.val64;
2457
2458	/* The destination is always a virtual address */
2459	AssertReturn(param1.type == DISQPV_TYPE_ADDRESS, VERR_EM_INTERPRETER);
2460
2461	RTGCPTR GCPtrPar1 = param1.val.val64;
2462	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2463	PGMPAGEMAPLOCK Lock;
2464	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2465	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2466
2467	/* Try emulate it with a one-shot #PF handler in place. (RC) */
2468	Log2(("%s %RGv imm%d=%RX64\n", emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2469
2470	RTGCUINTREG32 eflags = 0;
2471	rc = pfnEmulate(pvParam1, ValPar2, pDis->Param2.cb, &eflags);
2472	PGMPhysReleasePageMappingLock(pVM, &Lock);
2473	if (RT_FAILURE(rc))
2474	{
2475	Log(("%s %RGv imm%d=%RX64-> emulation failed due to page fault!\n", emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2476	return VERR_EM_INTERPRETER;
2477	}
2478
2479	/* Update guest's eflags and finish. */
2480	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2481	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2482
2483	*pcbSize = param2.size;
2484	return VINF_SUCCESS;
2485	}
2486	#endif /* !VBOX_COMPARE_IEM_AND_EM */
2487
2488
2489	/**
2490	* ADD, ADC & SUB Emulation.
2491	*/
2492	static int emInterpretAddSub(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2493	PFNEMULATEPARAM3 pfnEmulate)
2494	{
2495	NOREF(pvFault);
2496	DISQPVPARAMVAL param1, param2;
2497	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2498	if(RT_FAILURE(rc))
2499	return VERR_EM_INTERPRETER;
2500
2501	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2502	if(RT_FAILURE(rc))
2503	return VERR_EM_INTERPRETER;
2504
2505	#ifdef IN_RC
2506	if (TRPMHasTrap(pVCpu))
2507	{
2508	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2509	{
2510	#endif
2511	RTGCPTR pParam1;
2512	uint64_t valpar1, valpar2;
2513
2514	if (pDis->Param1.cb != pDis->Param2.cb)
2515	{
2516	if (pDis->Param1.cb < pDis->Param2.cb)
2517	{
2518	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->Param1.cb, pDis->Param2.cb)); /* should never happen! */
2519	return VERR_EM_INTERPRETER;
2520	}
2521	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
2522	pDis->Param2.cb = pDis->Param1.cb;
2523	param2.size = param1.size;
2524	}
2525
2526	/* The destination is always a virtual address */
2527	if (param1.type == DISQPV_TYPE_ADDRESS)
2528	{
2529	pParam1 = (RTGCPTR)param1.val.val64;
2530	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2531	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
2532	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
2533	if (RT_FAILURE(rc))
2534	{
2535	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2536	return VERR_EM_INTERPRETER;
2537	}
2538	}
2539	else
2540	{
2541	#ifndef DEBUG_bird
2542	AssertFailed();
2543	#endif
2544	return VERR_EM_INTERPRETER;
2545	}
2546
2547	/* Register or immediate data */
2548	switch(param2.type)
2549	{
2550	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2551	valpar2 = param2.val.val64;
2552	break;
2553
2554	default:
2555	AssertFailed();
2556	return VERR_EM_INTERPRETER;
2557	}
2558
2559	/* Data read, emulate instruction. */
2560	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
2561
2562	/* Update guest's eflags and finish. */
2563	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2564	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2565
2566	/* And write it back */
2567	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
2568	if (RT_SUCCESS(rc))
2569	{
2570	/* All done! */
2571	*pcbSize = param2.size;
2572	return VINF_SUCCESS;
2573	}
2574	#ifdef IN_RC
2575	}
2576	}
2577	#endif
2578	return VERR_EM_INTERPRETER;
2579	}
2580
2581
2582	/**
2583	* ADC Emulation.
2584	*/
2585	static int emInterpretAdc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2586	{
2587	if (pRegFrame->eflags.Bits.u1CF)
2588	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdcWithCarrySet);
2589	else
2590	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdd);
2591	}
2592
2593
2594	/**
2595	* BTR/C/S Emulation.
2596	*/
2597	static int emInterpretBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
2598	PFNEMULATEPARAM2UINT32 pfnEmulate)
2599	{
2600	DISQPVPARAMVAL param1, param2;
2601	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2602	if(RT_FAILURE(rc))
2603	return VERR_EM_INTERPRETER;
2604
2605	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2606	if(RT_FAILURE(rc))
2607	return VERR_EM_INTERPRETER;
2608
2609	#ifdef IN_RC
2610	if (TRPMHasTrap(pVCpu))
2611	{
2612	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
2613	{
2614	#endif
2615	RTGCPTR pParam1;
2616	uint64_t valpar1 = 0, valpar2;
2617	uint32_t eflags;
2618
2619	/* The destination is always a virtual address */
2620	if (param1.type != DISQPV_TYPE_ADDRESS)
2621	return VERR_EM_INTERPRETER;
2622
2623	pParam1 = (RTGCPTR)param1.val.val64;
2624	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
2625
2626	/* Register or immediate data */
2627	switch(param2.type)
2628	{
2629	case DISQPV_TYPE_IMMEDIATE: /* both immediate data and register (ugly) */
2630	valpar2 = param2.val.val64;
2631	break;
2632
2633	default:
2634	AssertFailed();
2635	return VERR_EM_INTERPRETER;
2636	}
2637
2638	Log2(("emInterpret%s: pvFault=%RGv pParam1=%RGv val2=%x\n", emGetMnemonic(pDis), pvFault, pParam1, valpar2));
2639	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + valpar2/8);
2640	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)pParam1 & ~3) == pvFault, VERR_EM_INTERPRETER);
2641	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, 1);
2642	if (RT_FAILURE(rc))
2643	{
2644	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2645	return VERR_EM_INTERPRETER;
2646	}
2647
2648	Log2(("emInterpretBtx: val=%x\n", valpar1));
2649	/* Data read, emulate bit test instruction. */
2650	eflags = pfnEmulate(&valpar1, valpar2 & 0x7);
2651
2652	Log2(("emInterpretBtx: val=%x CF=%d\n", valpar1, !!(eflags & X86_EFL_CF)));
2653
2654	/* Update guest's eflags and finish. */
2655	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2656	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2657
2658	/* And write it back */
2659	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, 1);
2660	if (RT_SUCCESS(rc))
2661	{
2662	/* All done! */
2663	*pcbSize = 1;
2664	return VINF_SUCCESS;
2665	}
2666	#ifdef IN_RC
2667	}
2668	}
2669	#endif
2670	return VERR_EM_INTERPRETER;
2671	}
2672
2673
2674	#ifndef VBOX_COMPARE_IEM_AND_EM
2675	/**
2676	* LOCK BTR/C/S Emulation.
2677	*/
2678	static int emInterpretLockBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
2679	uint32_t *pcbSize, PFNEMULATELOCKPARAM2 pfnEmulate)
2680	{
2681	void *pvParam1;
2682
2683	DISQPVPARAMVAL param1, param2;
2684	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2685	if(RT_FAILURE(rc))
2686	return VERR_EM_INTERPRETER;
2687
2688	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2689	if(RT_FAILURE(rc))
2690	return VERR_EM_INTERPRETER;
2691
2692	/* The destination is always a virtual address */
2693	if (param1.type != DISQPV_TYPE_ADDRESS)
2694	return VERR_EM_INTERPRETER;
2695
2696	/* Register and immediate data == DISQPV_TYPE_IMMEDIATE */
2697	AssertReturn(param2.type == DISQPV_TYPE_IMMEDIATE, VERR_EM_INTERPRETER);
2698	uint64_t ValPar2 = param2.val.val64;
2699
2700	/* Adjust the parameters so what we're dealing with is a bit within the byte pointed to. */
2701	RTGCPTR GCPtrPar1 = param1.val.val64;
2702	GCPtrPar1 = (GCPtrPar1 + ValPar2 / 8);
2703	ValPar2 &= 7;
2704
2705	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
2706	#ifdef IN_RC
2707	Assert(TRPMHasTrap(pVCpu));
2708	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)GCPtrPar1 & ~(RTGCUINTPTR)3) == pvFault, VERR_EM_INTERPRETER);
2709	#endif
2710
2711	PGMPAGEMAPLOCK Lock;
2712	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
2713	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2714
2715	Log2(("emInterpretLockBitTest %s: pvFault=%RGv GCPtrPar1=%RGv imm=%RX64\n", emGetMnemonic(pDis), pvFault, GCPtrPar1, ValPar2));
2716
2717	/* Try emulate it with a one-shot #PF handler in place. (RC) */
2718	RTGCUINTREG32 eflags = 0;
2719	rc = pfnEmulate(pvParam1, ValPar2, &eflags);
2720	PGMPhysReleasePageMappingLock(pVM, &Lock);
2721	if (RT_FAILURE(rc))
2722	{
2723	Log(("emInterpretLockBitTest %s: %RGv imm%d=%RX64 -> emulation failed due to page fault!\n",
2724	emGetMnemonic(pDis), GCPtrPar1, pDis->Param2.cb*8, ValPar2));
2725	return VERR_EM_INTERPRETER;
2726	}
2727
2728	Log2(("emInterpretLockBitTest %s: GCPtrPar1=%RGv imm=%RX64 CF=%d\n", emGetMnemonic(pDis), GCPtrPar1, ValPar2, !!(eflags & X86_EFL_CF)));
2729
2730	/* Update guest's eflags and finish. */
2731	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
2732	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
2733
2734	*pcbSize = 1;
2735	return VINF_SUCCESS;
2736	}
2737	#endif /* !VBOX_COMPARE_IEM_AND_EM */
2738
2739
2740	/**
2741	* MOV emulation.
2742	*/
2743	static int emInterpretMov(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2744	{
2745	NOREF(pvFault);
2746	DISQPVPARAMVAL param1, param2;
2747	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_DST);
2748	if(RT_FAILURE(rc))
2749	return VERR_EM_INTERPRETER;
2750
2751	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
2752	if(RT_FAILURE(rc))
2753	return VERR_EM_INTERPRETER;
2754
2755	if (param1.type == DISQPV_TYPE_ADDRESS)
2756	{
2757	RTGCPTR pDest;
2758	uint64_t val64;
2759
2760	switch(param1.type)
2761	{
2762	case DISQPV_TYPE_IMMEDIATE:
2763	if(!(param1.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
2764	return VERR_EM_INTERPRETER;
2765	/* fallthru */
2766
2767	case DISQPV_TYPE_ADDRESS:
2768	pDest = (RTGCPTR)param1.val.val64;
2769	pDest = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pDest);
2770	break;
2771
2772	default:
2773	AssertFailed();
2774	return VERR_EM_INTERPRETER;
2775	}
2776
2777	switch(param2.type)
2778	{
2779	case DISQPV_TYPE_IMMEDIATE: /* register type is translated to this one too */
2780	val64 = param2.val.val64;
2781	break;
2782
2783	default:
2784	Log(("emInterpretMov: unexpected type=%d rip=%RGv\n", param2.type, (RTGCPTR)pRegFrame->rip));
2785	return VERR_EM_INTERPRETER;
2786	}
2787	#ifdef LOG_ENABLED
2788	if (pDis->uCpuMode == DISCPUMODE_64BIT)
2789	LogFlow(("EMInterpretInstruction at %RGv: OP_MOV %RGv <- %RX64 (%d) &val64=%RHv\n", (RTGCPTR)pRegFrame->rip, pDest, val64, param2.size, &val64));
2790	else
2791	LogFlow(("EMInterpretInstruction at %08RX64: OP_MOV %RGv <- %08X (%d) &val64=%RHv\n", pRegFrame->rip, pDest, (uint32_t)val64, param2.size, &val64));
2792	#endif
2793
2794	Assert(param2.size <= 8 && param2.size > 0);
2795	EM_ASSERT_FAULT_RETURN(pDest == pvFault, VERR_EM_INTERPRETER);
2796	rc = emRamWrite(pVM, pVCpu, pRegFrame, pDest, &val64, param2.size);
2797	if (RT_FAILURE(rc))
2798	return VERR_EM_INTERPRETER;
2799
2800	*pcbSize = param2.size;
2801	}
2802	#if defined(IN_RC) && defined(VBOX_WITH_RAW_RING1)
2803	/* mov xx, cs instruction is dangerous in raw mode and replaced by an 'int3' by csam/patm. */
2804	else if ( param1.type == DISQPV_TYPE_REGISTER
2805	&& param2.type == DISQPV_TYPE_REGISTER)
2806	{
2807	AssertReturn((pDis->Param1.fUse & (DISUSE_REG_GEN8\|DISUSE_REG_GEN16\|DISUSE_REG_GEN32)), VERR_EM_INTERPRETER);
2808	AssertReturn(pDis->Param2.fUse == DISUSE_REG_SEG, VERR_EM_INTERPRETER);
2809	AssertReturn(pDis->Param2.Base.idxSegReg == DISSELREG_CS, VERR_EM_INTERPRETER);
2810
2811	uint32_t u32Cpl = CPUMRCGetGuestCPL(pVCpu, pRegFrame);
2812	uint32_t uValCS = (pRegFrame->cs.Sel & ~X86_SEL_RPL) \| u32Cpl;
2813
2814	Log(("EMInterpretInstruction: OP_MOV cs=%x->%x\n", pRegFrame->cs.Sel, uValCS));
2815	switch (param1.size)
2816	{
2817	case 1: rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t) uValCS); break;
2818	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)uValCS); break;
2819	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)uValCS); break;
2820	default:
2821	AssertFailed();
2822	return VERR_EM_INTERPRETER;
2823	}
2824	AssertRCReturn(rc, rc);
2825	}
2826	#endif
2827	else
2828	{ /* read fault */
2829	RTGCPTR pSrc;
2830	uint64_t val64;
2831
2832	/* Source */
2833	switch(param2.type)
2834	{
2835	case DISQPV_TYPE_IMMEDIATE:
2836	if(!(param2.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
2837	return VERR_EM_INTERPRETER;
2838	/* fallthru */
2839
2840	case DISQPV_TYPE_ADDRESS:
2841	pSrc = (RTGCPTR)param2.val.val64;
2842	pSrc = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param2, pSrc);
2843	break;
2844
2845	default:
2846	return VERR_EM_INTERPRETER;
2847	}
2848
2849	Assert(param1.size <= 8 && param1.size > 0);
2850	EM_ASSERT_FAULT_RETURN(pSrc == pvFault, VERR_EM_INTERPRETER);
2851	rc = emRamRead(pVM, pVCpu, pRegFrame, &val64, pSrc, param1.size);
2852	if (RT_FAILURE(rc))
2853	return VERR_EM_INTERPRETER;
2854
2855	/* Destination */
2856	switch(param1.type)
2857	{
2858	case DISQPV_TYPE_REGISTER:
2859	switch(param1.size)
2860	{
2861	case 1: rc = DISWriteReg8(pRegFrame, pDis->Param1.Base.idxGenReg, (uint8_t) val64); break;
2862	case 2: rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, (uint16_t)val64); break;
2863	case 4: rc = DISWriteReg32(pRegFrame, pDis->Param1.Base.idxGenReg, (uint32_t)val64); break;
2864	case 8: rc = DISWriteReg64(pRegFrame, pDis->Param1.Base.idxGenReg, val64); break;
2865	default:
2866	return VERR_EM_INTERPRETER;
2867	}
2868	if (RT_FAILURE(rc))
2869	return rc;
2870	break;
2871
2872	default:
2873	return VERR_EM_INTERPRETER;
2874	}
2875	#ifdef LOG_ENABLED
2876	if (pDis->uCpuMode == DISCPUMODE_64BIT)
2877	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %RX64 (%d)\n", pSrc, val64, param1.size));
2878	else
2879	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %08X (%d)\n", pSrc, (uint32_t)val64, param1.size));
2880	#endif
2881	}
2882	return VINF_SUCCESS;
2883	}
2884
2885
2886	#ifndef IN_RC
2887	/**
2888	* [REP] STOSWD emulation
2889	*/
2890	static int emInterpretStosWD(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2891	{
2892	int rc;
2893	RTGCPTR GCDest, GCOffset;
2894	uint32_t cbSize;
2895	uint64_t cTransfers;
2896	int offIncrement;
2897	NOREF(pvFault);
2898
2899	/* Don't support any but these three prefix bytes. */
2900	if ((pDis->fPrefix & ~(DISPREFIX_ADDRSIZE\|DISPREFIX_OPSIZE\|DISPREFIX_REP\|DISPREFIX_REX)))
2901	return VERR_EM_INTERPRETER;
2902
2903	switch (pDis->uAddrMode)
2904	{
2905	case DISCPUMODE_16BIT:
2906	GCOffset = pRegFrame->di;
2907	cTransfers = pRegFrame->cx;
2908	break;
2909	case DISCPUMODE_32BIT:
2910	GCOffset = pRegFrame->edi;
2911	cTransfers = pRegFrame->ecx;
2912	break;
2913	case DISCPUMODE_64BIT:
2914	GCOffset = pRegFrame->rdi;
2915	cTransfers = pRegFrame->rcx;
2916	break;
2917	default:
2918	AssertFailed();
2919	return VERR_EM_INTERPRETER;
2920	}
2921
2922	GCDest = SELMToFlat(pVM, DISSELREG_ES, pRegFrame, GCOffset);
2923	switch (pDis->uOpMode)
2924	{
2925	case DISCPUMODE_16BIT:
2926	cbSize = 2;
2927	break;
2928	case DISCPUMODE_32BIT:
2929	cbSize = 4;
2930	break;
2931	case DISCPUMODE_64BIT:
2932	cbSize = 8;
2933	break;
2934	default:
2935	AssertFailed();
2936	return VERR_EM_INTERPRETER;
2937	}
2938
2939	offIncrement = pRegFrame->eflags.Bits.u1DF ? -(signed)cbSize : (signed)cbSize;
2940
2941	if (!(pDis->fPrefix & DISPREFIX_REP))
2942	{
2943	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d\n", pRegFrame->es.Sel, GCOffset, GCDest, cbSize));
2944
2945	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
2946	if (RT_FAILURE(rc))
2947	return VERR_EM_INTERPRETER;
2948	Assert(rc == VINF_SUCCESS);
2949
2950	/* Update (e/r)di. */
2951	switch (pDis->uAddrMode)
2952	{
2953	case DISCPUMODE_16BIT:
2954	pRegFrame->di += offIncrement;
2955	break;
2956	case DISCPUMODE_32BIT:
2957	pRegFrame->edi += offIncrement;
2958	break;
2959	case DISCPUMODE_64BIT:
2960	pRegFrame->rdi += offIncrement;
2961	break;
2962	default:
2963	AssertFailed();
2964	return VERR_EM_INTERPRETER;
2965	}
2966
2967	}
2968	else
2969	{
2970	if (!cTransfers)
2971	return VINF_SUCCESS;
2972
2973	/*
2974	* Do not try emulate cross page stuff here because we don't know what might
2975	* be waiting for us on the subsequent pages. The caller has only asked us to
2976	* ignore access handlers fro the current page.
2977	* This also fends off big stores which would quickly kill PGMR0DynMap.
2978	*/
2979	if ( cbSize > PAGE_SIZE
2980	\|\| cTransfers > PAGE_SIZE
2981	\|\| (GCDest >> PAGE_SHIFT) != ((GCDest + offIncrement * cTransfers) >> PAGE_SHIFT))
2982	{
2983	Log(("STOSWD is crosses pages, chicken out to the recompiler; GCDest=%RGv cbSize=%#x offIncrement=%d cTransfers=%#x\n",
2984	GCDest, cbSize, offIncrement, cTransfers));
2985	return VERR_EM_INTERPRETER;
2986	}
2987
2988	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d cTransfers=%x DF=%d\n", pRegFrame->es.Sel, GCOffset, GCDest, cbSize, cTransfers, pRegFrame->eflags.Bits.u1DF));
2989	/* Access verification first; we currently can't recover properly from traps inside this instruction */
2990	rc = PGMVerifyAccess(pVCpu, GCDest - ((offIncrement > 0) ? 0 : ((cTransfers-1) * cbSize)),
2991	cTransfers * cbSize,
2992	X86_PTE_RW \| (CPUMGetGuestCPL(pVCpu) == 3 ? X86_PTE_US : 0));
2993	if (rc != VINF_SUCCESS)
2994	{
2995	Log(("STOSWD will generate a trap -> recompiler, rc=%d\n", rc));
2996	return VERR_EM_INTERPRETER;
2997	}
2998
2999	/* REP case */
3000	while (cTransfers)
3001	{
3002	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
3003	if (RT_FAILURE(rc))
3004	{
3005	rc = VERR_EM_INTERPRETER;
3006	break;
3007	}
3008
3009	Assert(rc == VINF_SUCCESS);
3010	GCOffset += offIncrement;
3011	GCDest += offIncrement;
3012	cTransfers--;
3013	}
3014
3015	/* Update the registers. */
3016	switch (pDis->uAddrMode)
3017	{
3018	case DISCPUMODE_16BIT:
3019	pRegFrame->di = GCOffset;
3020	pRegFrame->cx = cTransfers;
3021	break;
3022	case DISCPUMODE_32BIT:
3023	pRegFrame->edi = GCOffset;
3024	pRegFrame->ecx = cTransfers;
3025	break;
3026	case DISCPUMODE_64BIT:
3027	pRegFrame->rdi = GCOffset;
3028	pRegFrame->rcx = cTransfers;
3029	break;
3030	default:
3031	AssertFailed();
3032	return VERR_EM_INTERPRETER;
3033	}
3034	}
3035
3036	*pcbSize = cbSize;
3037	return rc;
3038	}
3039	#endif /* !IN_RC */
3040
3041
3042	/**
3043	* [LOCK] CMPXCHG emulation.
3044	*/
3045	static int emInterpretCmpXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3046	{
3047	DISQPVPARAMVAL param1, param2;
3048	NOREF(pvFault);
3049
3050	#if HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL_IN_R0)
3051	Assert(pDis->Param1.cb <= 4);
3052	#endif
3053
3054	/* Source to make DISQueryParamVal read the register value - ugly hack */
3055	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3056	if(RT_FAILURE(rc))
3057	return VERR_EM_INTERPRETER;
3058
3059	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param2, &param2, DISQPVWHICH_SRC);
3060	if(RT_FAILURE(rc))
3061	return VERR_EM_INTERPRETER;
3062
3063	uint64_t valpar;
3064	switch(param2.type)
3065	{
3066	case DISQPV_TYPE_IMMEDIATE: /* register actually */
3067	valpar = param2.val.val64;
3068	break;
3069
3070	default:
3071	return VERR_EM_INTERPRETER;
3072	}
3073
3074	PGMPAGEMAPLOCK Lock;
3075	RTGCPTR GCPtrPar1;
3076	void *pvParam1;
3077	uint64_t eflags;
3078
3079	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
3080	switch(param1.type)
3081	{
3082	case DISQPV_TYPE_ADDRESS:
3083	GCPtrPar1 = param1.val.val64;
3084	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
3085
3086	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
3087	AssertRCReturn(rc, VERR_EM_INTERPRETER);
3088	break;
3089
3090	default:
3091	return VERR_EM_INTERPRETER;
3092	}
3093
3094	LogFlow(("%s %RGv rax=%RX64 %RX64\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar));
3095
3096	#ifndef VBOX_COMPARE_IEM_AND_EM
3097	if (pDis->fPrefix & DISPREFIX_LOCK)
3098	eflags = EMEmulateLockCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->Param2.cb);
3099	else
3100	eflags = EMEmulateCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->Param2.cb);
3101	#else /* VBOX_COMPARE_IEM_AND_EM */
3102	uint64_t u64;
3103	switch (pDis->Param2.cb)
3104	{
3105	case 1: u64 = (uint8_t )pvParam1; break;
3106	case 2: u64 = (uint16_t )pvParam1; break;
3107	case 4: u64 = (uint32_t )pvParam1; break;
3108	default:
3109	case 8: u64 = (uint64_t )pvParam1; break;
3110	}
3111	eflags = EMEmulateCmpXchg(&u64, &pRegFrame->rax, valpar, pDis->Param2.cb);
3112	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, pDis->Param2.cb); AssertRCSuccess(rc2);
3113	#endif /* VBOX_COMPARE_IEM_AND_EM */
3114
3115	LogFlow(("%s %RGv rax=%RX64 %RX64 ZF=%d\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar, !!(eflags & X86_EFL_ZF)));
3116
3117	/* Update guest's eflags and finish. */
3118	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
3119	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
3120
3121	*pcbSize = param2.size;
3122	PGMPhysReleasePageMappingLock(pVM, &Lock);
3123	return VINF_SUCCESS;
3124	}
3125
3126
3127	/**
3128	* [LOCK] CMPXCHG8B emulation.
3129	*/
3130	static int emInterpretCmpXchg8b(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3131	{
3132	DISQPVPARAMVAL param1;
3133	NOREF(pvFault);
3134
3135	/* Source to make DISQueryParamVal read the register value - ugly hack */
3136	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3137	if(RT_FAILURE(rc))
3138	return VERR_EM_INTERPRETER;
3139
3140	RTGCPTR GCPtrPar1;
3141	void *pvParam1;
3142	uint64_t eflags;
3143	PGMPAGEMAPLOCK Lock;
3144
3145	AssertReturn(pDis->Param1.cb == 8, VERR_EM_INTERPRETER);
3146	switch(param1.type)
3147	{
3148	case DISQPV_TYPE_ADDRESS:
3149	GCPtrPar1 = param1.val.val64;
3150	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, GCPtrPar1);
3151
3152	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
3153	AssertRCReturn(rc, VERR_EM_INTERPRETER);
3154	break;
3155
3156	default:
3157	return VERR_EM_INTERPRETER;
3158	}
3159
3160	LogFlow(("%s %RGv=%08x eax=%08x\n", emGetMnemonic(pDis), pvParam1, pRegFrame->eax));
3161
3162	#ifndef VBOX_COMPARE_IEM_AND_EM
3163	if (pDis->fPrefix & DISPREFIX_LOCK)
3164	eflags = EMEmulateLockCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
3165	else
3166	eflags = EMEmulateCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
3167	#else /* VBOX_COMPARE_IEM_AND_EM */
3168	uint64_t u64 = (uint64_t )pvParam1;
3169	eflags = EMEmulateCmpXchg8b(&u64, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
3170	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, sizeof(u64)); AssertRCSuccess(rc2);
3171	#endif /* VBOX_COMPARE_IEM_AND_EM */
3172
3173	LogFlow(("%s %RGv=%08x eax=%08x ZF=%d\n", emGetMnemonic(pDis), pvParam1, pRegFrame->eax, !!(eflags & X86_EFL_ZF)));
3174
3175	/* Update guest's eflags and finish; note that only ZF is affected. */
3176	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_ZF))
3177	\| (eflags & (X86_EFL_ZF));
3178
3179	*pcbSize = 8;
3180	PGMPhysReleasePageMappingLock(pVM, &Lock);
3181	return VINF_SUCCESS;
3182	}
3183
3184
3185	#ifdef IN_RC /** @todo test+enable for HM as well. */
3186	/**
3187	* [LOCK] XADD emulation.
3188	*/
3189	static int emInterpretXAdd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3190	{
3191	Assert(pDis->uCpuMode != DISCPUMODE_64BIT); /** @todo check */
3192	DISQPVPARAMVAL param1;
3193	void *pvParamReg2;
3194	size_t cbParamReg2;
3195	NOREF(pvFault);
3196
3197	/* Source to make DISQueryParamVal read the register value - ugly hack */
3198	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3199	if(RT_FAILURE(rc))
3200	return VERR_EM_INTERPRETER;
3201
3202	rc = DISQueryParamRegPtr(pRegFrame, pDis, &pDis->Param2, &pvParamReg2, &cbParamReg2);
3203	Assert(cbParamReg2 <= 4);
3204	if(RT_FAILURE(rc))
3205	return VERR_EM_INTERPRETER;
3206
3207	#ifdef IN_RC
3208	if (TRPMHasTrap(pVCpu))
3209	{
3210	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
3211	{
3212	#endif
3213	RTGCPTR GCPtrPar1;
3214	void *pvParam1;
3215	uint32_t eflags;
3216	PGMPAGEMAPLOCK Lock;
3217
3218	AssertReturn(pDis->Param1.cb == pDis->Param2.cb, VERR_EM_INTERPRETER);
3219	switch(param1.type)
3220	{
3221	case DISQPV_TYPE_ADDRESS:
3222	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, (RTRCUINTPTR)param1.val.val64);
3223	#ifdef IN_RC
3224	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
3225	#endif
3226
3227	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
3228	AssertRCReturn(rc, VERR_EM_INTERPRETER);
3229	break;
3230
3231	default:
3232	return VERR_EM_INTERPRETER;
3233	}
3234
3235	LogFlow(("XAdd %RGv=%p reg=%08llx\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2));
3236
3237	#ifndef VBOX_COMPARE_IEM_AND_EM
3238	if (pDis->fPrefix & DISPREFIX_LOCK)
3239	eflags = EMEmulateLockXAdd(pvParam1, pvParamReg2, cbParamReg2);
3240	else
3241	eflags = EMEmulateXAdd(pvParam1, pvParamReg2, cbParamReg2);
3242	#else /* VBOX_COMPARE_IEM_AND_EM */
3243	uint64_t u64;
3244	switch (cbParamReg2)
3245	{
3246	case 1: u64 = (uint8_t )pvParam1; break;
3247	case 2: u64 = (uint16_t )pvParam1; break;
3248	case 4: u64 = (uint32_t )pvParam1; break;
3249	default:
3250	case 8: u64 = (uint64_t )pvParam1; break;
3251	}
3252	eflags = EMEmulateXAdd(&u64, pvParamReg2, cbParamReg2);
3253	int rc2 = emRamWrite(pVM, pVCpu, pRegFrame, GCPtrPar1, &u64, pDis->Param2.cb); AssertRCSuccess(rc2);
3254	#endif /* VBOX_COMPARE_IEM_AND_EM */
3255
3256	LogFlow(("XAdd %RGv=%p reg=%08llx ZF=%d\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2, !!(eflags & X86_EFL_ZF) ));
3257
3258	/* Update guest's eflags and finish. */
3259	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
3260	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
3261
3262	*pcbSize = cbParamReg2;
3263	PGMPhysReleasePageMappingLock(pVM, &Lock);
3264	return VINF_SUCCESS;
3265	#ifdef IN_RC
3266	}
3267	}
3268
3269	return VERR_EM_INTERPRETER;
3270	#endif
3271	}
3272	#endif /* IN_RC */
3273
3274
3275	/**
3276	* WBINVD Emulation.
3277	*/
3278	static int emInterpretWbInvd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3279	{
3280	/* Nothing to do. */
3281	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3282	return VINF_SUCCESS;
3283	}
3284
3285
3286	/**
3287	* INVLPG Emulation.
3288	*/
3289	static VBOXSTRICTRC emInterpretInvlPg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3290	{
3291	DISQPVPARAMVAL param1;
3292	RTGCPTR addr;
3293	NOREF(pvFault); NOREF(pVM); NOREF(pcbSize);
3294
3295	VBOXSTRICTRC rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3296	if(RT_FAILURE(rc))
3297	return VERR_EM_INTERPRETER;
3298
3299	switch(param1.type)
3300	{
3301	case DISQPV_TYPE_IMMEDIATE:
3302	case DISQPV_TYPE_ADDRESS:
3303	if(!(param1.flags & (DISQPV_FLAG_32\|DISQPV_FLAG_64)))
3304	return VERR_EM_INTERPRETER;
3305	addr = (RTGCPTR)param1.val.val64;
3306	break;
3307
3308	default:
3309	return VERR_EM_INTERPRETER;
3310	}
3311
3312	/** @todo is addr always a flat linear address or ds based
3313	* (in absence of segment override prefixes)????
3314	*/
3315	#ifdef IN_RC
3316	LogFlow(("RC: EMULATE: invlpg %RGv\n", addr));
3317	#endif
3318	rc = PGMInvalidatePage(pVCpu, addr);
3319	if ( rc == VINF_SUCCESS
3320	\|\| rc == VINF_PGM_SYNC_CR3 /* we can rely on the FF */)
3321	return VINF_SUCCESS;
3322	AssertMsgReturn(rc == VINF_EM_RAW_EMULATE_INSTR,
3323	("%Rrc addr=%RGv\n", VBOXSTRICTRC_VAL(rc), addr),
3324	VERR_EM_INTERPRETER);
3325	return rc;
3326	}
3327
3328	/** @todo change all these EMInterpretXXX methods to VBOXSTRICTRC. */
3329
3330	/**
3331	* CPUID Emulation.
3332	*/
3333	static int emInterpretCpuId(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3334	{
3335	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3336	int rc = EMInterpretCpuId(pVM, pVCpu, pRegFrame);
3337	return rc;
3338	}
3339
3340
3341	/**
3342	* CLTS Emulation.
3343	*/
3344	static int emInterpretClts(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3345	{
3346	NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3347	return EMInterpretCLTS(pVM, pVCpu);
3348	}
3349
3350
3351	/**
3352	* LMSW Emulation.
3353	*/
3354	static int emInterpretLmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3355	{
3356	DISQPVPARAMVAL param1;
3357	uint32_t val;
3358	NOREF(pvFault); NOREF(pcbSize);
3359
3360	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3361	if(RT_FAILURE(rc))
3362	return VERR_EM_INTERPRETER;
3363
3364	switch(param1.type)
3365	{
3366	case DISQPV_TYPE_IMMEDIATE:
3367	case DISQPV_TYPE_ADDRESS:
3368	if(!(param1.flags & DISQPV_FLAG_16))
3369	return VERR_EM_INTERPRETER;
3370	val = param1.val.val32;
3371	break;
3372
3373	default:
3374	return VERR_EM_INTERPRETER;
3375	}
3376
3377	LogFlow(("emInterpretLmsw %x\n", val));
3378	return EMInterpretLMSW(pVM, pVCpu, pRegFrame, val);
3379	}
3380
3381	#ifdef EM_EMULATE_SMSW
3382	/**
3383	* SMSW Emulation.
3384	*/
3385	static int emInterpretSmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3386	{
3387	NOREF(pvFault); NOREF(pcbSize);
3388	DISQPVPARAMVAL param1;
3389	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
3390
3391	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3392	if(RT_FAILURE(rc))
3393	return VERR_EM_INTERPRETER;
3394
3395	switch(param1.type)
3396	{
3397	case DISQPV_TYPE_IMMEDIATE:
3398	if(param1.size != sizeof(uint16_t))
3399	return VERR_EM_INTERPRETER;
3400	LogFlow(("emInterpretSmsw %d <- cr0 (%x)\n", pDis->Param1.Base.idxGenReg, cr0));
3401	rc = DISWriteReg16(pRegFrame, pDis->Param1.Base.idxGenReg, cr0);
3402	break;
3403
3404	case DISQPV_TYPE_ADDRESS:
3405	{
3406	RTGCPTR pParam1;
3407
3408	/* Actually forced to 16 bits regardless of the operand size. */
3409	if(param1.size != sizeof(uint16_t))
3410	return VERR_EM_INTERPRETER;
3411
3412	pParam1 = (RTGCPTR)param1.val.val64;
3413	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, pParam1);
3414	LogFlow(("emInterpretSmsw %RGv <- cr0 (%x)\n", pParam1, cr0));
3415
3416	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &cr0, sizeof(uint16_t));
3417	if (RT_FAILURE(rc))
3418	{
3419	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
3420	return VERR_EM_INTERPRETER;
3421	}
3422	break;
3423	}
3424
3425	default:
3426	return VERR_EM_INTERPRETER;
3427	}
3428
3429	LogFlow(("emInterpretSmsw %x\n", cr0));
3430	return rc;
3431	}
3432	#endif
3433
3434	/**
3435	* MOV CRx
3436	*/
3437	static int emInterpretMovCRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3438	{
3439	NOREF(pvFault); NOREF(pcbSize);
3440	if ((pDis->Param1.fUse == DISUSE_REG_GEN32 \|\| pDis->Param1.fUse == DISUSE_REG_GEN64) && pDis->Param2.fUse == DISUSE_REG_CR)
3441	return EMInterpretCRxRead(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxGenReg, pDis->Param2.Base.idxCtrlReg);
3442
3443	if (pDis->Param1.fUse == DISUSE_REG_CR && (pDis->Param2.fUse == DISUSE_REG_GEN32 \|\| pDis->Param2.fUse == DISUSE_REG_GEN64))
3444	return EMInterpretCRxWrite(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxCtrlReg, pDis->Param2.Base.idxGenReg);
3445
3446	AssertMsgFailedReturn(("Unexpected control register move\n"), VERR_EM_INTERPRETER);
3447	}
3448
3449
3450	/**
3451	* MOV DRx
3452	*/
3453	static int emInterpretMovDRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3454	{
3455	int rc = VERR_EM_INTERPRETER;
3456	NOREF(pvFault); NOREF(pcbSize);
3457
3458	if((pDis->Param1.fUse == DISUSE_REG_GEN32 \|\| pDis->Param1.fUse == DISUSE_REG_GEN64) && pDis->Param2.fUse == DISUSE_REG_DBG)
3459	{
3460	rc = EMInterpretDRxRead(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxGenReg, pDis->Param2.Base.idxDbgReg);
3461	}
3462	else
3463	if(pDis->Param1.fUse == DISUSE_REG_DBG && (pDis->Param2.fUse == DISUSE_REG_GEN32 \|\| pDis->Param2.fUse == DISUSE_REG_GEN64))
3464	{
3465	rc = EMInterpretDRxWrite(pVM, pVCpu, pRegFrame, pDis->Param1.Base.idxDbgReg, pDis->Param2.Base.idxGenReg);
3466	}
3467	else
3468	AssertMsgFailed(("Unexpected debug register move\n"));
3469
3470	return rc;
3471	}
3472
3473
3474	/**
3475	* LLDT Emulation.
3476	*/
3477	static int emInterpretLLdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3478	{
3479	DISQPVPARAMVAL param1;
3480	RTSEL sel;
3481	NOREF(pVM); NOREF(pvFault); NOREF(pcbSize);
3482
3483	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3484	if(RT_FAILURE(rc))
3485	return VERR_EM_INTERPRETER;
3486
3487	switch(param1.type)
3488	{
3489	case DISQPV_TYPE_ADDRESS:
3490	return VERR_EM_INTERPRETER; //feeling lazy right now
3491
3492	case DISQPV_TYPE_IMMEDIATE:
3493	if(!(param1.flags & DISQPV_FLAG_16))
3494	return VERR_EM_INTERPRETER;
3495	sel = (RTSEL)param1.val.val16;
3496	break;
3497
3498	default:
3499	return VERR_EM_INTERPRETER;
3500	}
3501
3502	#ifdef IN_RING0
3503	/* Only for the VT-x real-mode emulation case. */
3504	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
3505	CPUMSetGuestLDTR(pVCpu, sel);
3506	return VINF_SUCCESS;
3507	#else
3508	if (sel == 0)
3509	{
3510	if (CPUMGetHyperLDTR(pVCpu) == 0)
3511	{
3512	// this simple case is most frequent in Windows 2000 (31k - boot & shutdown)
3513	return VINF_SUCCESS;
3514	}
3515	}
3516	//still feeling lazy
3517	return VERR_EM_INTERPRETER;
3518	#endif
3519	}
3520
3521	#ifdef IN_RING0
3522	/**
3523	* LIDT/LGDT Emulation.
3524	*/
3525	static int emInterpretLIGdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3526	{
3527	DISQPVPARAMVAL param1;
3528	RTGCPTR pParam1;
3529	X86XDTR32 dtr32;
3530	NOREF(pvFault); NOREF(pcbSize);
3531
3532	Log(("Emulate %s at %RGv\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip));
3533
3534	/* Only for the VT-x real-mode emulation case. */
3535	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
3536
3537	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->Param1, &param1, DISQPVWHICH_SRC);
3538	if(RT_FAILURE(rc))
3539	return VERR_EM_INTERPRETER;
3540
3541	switch(param1.type)
3542	{
3543	case DISQPV_TYPE_ADDRESS:
3544	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->Param1, param1.val.val16);
3545	break;
3546
3547	default:
3548	return VERR_EM_INTERPRETER;
3549	}
3550
3551	rc = emRamRead(pVM, pVCpu, pRegFrame, &dtr32, pParam1, sizeof(dtr32));
3552	AssertRCReturn(rc, VERR_EM_INTERPRETER);
3553
3554	if (!(pDis->fPrefix & DISPREFIX_OPSIZE))
3555	dtr32.uAddr &= 0xffffff; /* 16 bits operand size */
3556
3557	if (pDis->pCurInstr->uOpcode == OP_LIDT)
3558	CPUMSetGuestIDTR(pVCpu, dtr32.uAddr, dtr32.cb);
3559	else
3560	CPUMSetGuestGDTR(pVCpu, dtr32.uAddr, dtr32.cb);
3561
3562	return VINF_SUCCESS;
3563	}
3564	#endif
3565
3566
3567	#ifdef IN_RC
3568	/**
3569	* STI Emulation.
3570	*
3571	* @remark the instruction following sti is guaranteed to be executed before any interrupts are dispatched
3572	*/
3573	static int emInterpretSti(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3574	{
3575	NOREF(pcbSize);
3576	PPATMGCSTATE pGCState = PATMGetGCState(pVM);
3577
3578	if(!pGCState)
3579	{
3580	Assert(pGCState);
3581	return VERR_EM_INTERPRETER;
3582	}
3583	pGCState->uVMFlags \|= X86_EFL_IF;
3584
3585	Assert(pRegFrame->eflags.u32 & X86_EFL_IF);
3586	Assert(pvFault == SELMToFlat(pVM, DISSELREG_CS, pRegFrame, (RTGCPTR)pRegFrame->rip));
3587
3588	pVCpu->em.s.GCPtrInhibitInterrupts = pRegFrame->eip + pDis->cbInstr;
3589	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
3590
3591	return VINF_SUCCESS;
3592	}
3593	#endif /* IN_RC */
3594
3595
3596	/**
3597	* HLT Emulation.
3598	*/
3599	static VBOXSTRICTRC
3600	emInterpretHlt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3601	{
3602	NOREF(pVM); NOREF(pVCpu); NOREF(pDis); NOREF(pRegFrame); NOREF(pvFault); NOREF(pcbSize);
3603	return VINF_EM_HALT;
3604	}
3605
3606
3607	/**
3608	* RDTSC Emulation.
3609	*/
3610	static int emInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3611	{
3612	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3613	return EMInterpretRdtsc(pVM, pVCpu, pRegFrame);
3614	}
3615
3616	/**
3617	* RDPMC Emulation
3618	*/
3619	static int emInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3620	{
3621	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3622	return EMInterpretRdpmc(pVM, pVCpu, pRegFrame);
3623	}
3624
3625
3626	static int emInterpretMonitor(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3627	{
3628	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3629	return EMInterpretMonitor(pVM, pVCpu, pRegFrame);
3630	}
3631
3632
3633	static VBOXSTRICTRC emInterpretMWait(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3634	{
3635	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3636	return EMInterpretMWait(pVM, pVCpu, pRegFrame);
3637	}
3638
3639
3640	/**
3641	* RDMSR Emulation.
3642	*/
3643	static int emInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3644	{
3645	/* Note: The Intel manual claims there's a REX version of RDMSR that's slightly
3646	different, so we play safe by completely disassembling the instruction. */
3647	Assert(!(pDis->fPrefix & DISPREFIX_REX));
3648	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3649	return EMInterpretRdmsr(pVM, pVCpu, pRegFrame);
3650	}
3651
3652
3653	/**
3654	* WRMSR Emulation.
3655	*/
3656	static int emInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
3657	{
3658	NOREF(pDis); NOREF(pvFault); NOREF(pcbSize);
3659	return EMInterpretWrmsr(pVM, pVCpu, pRegFrame);
3660	}
3661
3662
3663	/**
3664	* Internal worker.
3665	* @copydoc emInterpretInstructionCPUOuter
3666	*/
3667	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPU(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
3668	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
3669	{
3670	Assert(pRegFrame == CPUMGetGuestCtxCore(pVCpu));
3671	Assert(enmCodeType == EMCODETYPE_SUPERVISOR \|\| enmCodeType == EMCODETYPE_ALL);
3672	Assert(pcbSize);
3673	*pcbSize = 0;
3674
3675	if (enmCodeType == EMCODETYPE_SUPERVISOR)
3676	{
3677	/*
3678	* Only supervisor guest code!!
3679	* And no complicated prefixes.
3680	*/
3681	/* Get the current privilege level. */
3682	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
3683	#ifdef VBOX_WITH_RAW_RING1
3684	if ( !EMIsRawRing1Enabled(pVM)
3685	\|\| cpl > 1
3686	\|\| pRegFrame->eflags.Bits.u2IOPL > cpl
3687	)
3688	#endif
3689	{
3690	if ( cpl != 0
3691	&& pDis->pCurInstr->uOpcode != OP_RDTSC) /* rdtsc requires emulation in ring 3 as well */
3692	{
3693	Log(("WARNING: refusing instruction emulation for user-mode code!!\n"));
3694	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedUserMode));
3695	return VERR_EM_INTERPRETER;
3696	}
3697	}
3698	}
3699	else
3700	Log2(("emInterpretInstructionCPU allowed to interpret user-level code!!\n"));
3701
3702	#ifdef IN_RC
3703	if ( (pDis->fPrefix & (DISPREFIX_REPNE \| DISPREFIX_REP))
3704	\|\| ( (pDis->fPrefix & DISPREFIX_LOCK)
3705	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG
3706	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG8B
3707	&& pDis->pCurInstr->uOpcode != OP_XADD
3708	&& pDis->pCurInstr->uOpcode != OP_OR
3709	&& pDis->pCurInstr->uOpcode != OP_AND
3710	&& pDis->pCurInstr->uOpcode != OP_XOR
3711	&& pDis->pCurInstr->uOpcode != OP_BTR
3712	)
3713	)
3714	#else
3715	if ( (pDis->fPrefix & DISPREFIX_REPNE)
3716	\|\| ( (pDis->fPrefix & DISPREFIX_REP)
3717	&& pDis->pCurInstr->uOpcode != OP_STOSWD
3718	)
3719	\|\| ( (pDis->fPrefix & DISPREFIX_LOCK)
3720	&& pDis->pCurInstr->uOpcode != OP_OR
3721	&& pDis->pCurInstr->uOpcode != OP_AND
3722	&& pDis->pCurInstr->uOpcode != OP_XOR
3723	&& pDis->pCurInstr->uOpcode != OP_BTR
3724	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG
3725	&& pDis->pCurInstr->uOpcode != OP_CMPXCHG8B
3726	)
3727	)
3728	#endif
3729	{
3730	//Log(("EMInterpretInstruction: wrong prefix!!\n"));
3731	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedPrefix));
3732	Log4(("EM: Refuse %u on REP/REPNE/LOCK prefix grounds\n", pDis->pCurInstr->uOpcode));
3733	return VERR_EM_INTERPRETER;
3734	}
3735
3736	#if HC_ARCH_BITS == 32
3737	/*
3738	* Unable to emulate most >4 bytes accesses in 32 bits mode.
3739	* Whitelisted instructions are safe.
3740	*/
3741	if ( pDis->Param1.cb > 4
3742	&& CPUMIsGuestIn64BitCode(pVCpu))
3743	{
3744	uint32_t uOpCode = pDis->pCurInstr->uOpcode;
3745	if ( uOpCode != OP_STOSWD
3746	&& uOpCode != OP_MOV
3747	&& uOpCode != OP_CMPXCHG8B
3748	&& uOpCode != OP_XCHG
3749	&& uOpCode != OP_BTS
3750	&& uOpCode != OP_BTR
3751	&& uOpCode != OP_BTC
3752	# ifdef VBOX_WITH_HYBRID_32BIT_KERNEL_IN_R0
3753	&& uOpCode != OP_CMPXCHG /* solaris */
3754	&& uOpCode != OP_AND /* windows */
3755	&& uOpCode != OP_OR /* windows */
3756	&& uOpCode != OP_XOR /* because we can */
3757	&& uOpCode != OP_ADD /* windows (dripple) */
3758	&& uOpCode != OP_ADC /* because we can */
3759	&& uOpCode != OP_SUB /* because we can */
3760	/** @todo OP_BTS or is that a different kind of failure? */
3761	# endif
3762	)
3763	{
3764	# ifdef VBOX_WITH_STATISTICS
3765	switch (pDis->pCurInstr->uOpcode)
3766	{
3767	# define INTERPRET_FAILED_CASE(opcode, Instr) \
3768	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); break;
3769	INTERPRET_FAILED_CASE(OP_XCHG,Xchg);
3770	INTERPRET_FAILED_CASE(OP_DEC,Dec);
3771	INTERPRET_FAILED_CASE(OP_INC,Inc);
3772	INTERPRET_FAILED_CASE(OP_POP,Pop);
3773	INTERPRET_FAILED_CASE(OP_OR, Or);
3774	INTERPRET_FAILED_CASE(OP_XOR,Xor);
3775	INTERPRET_FAILED_CASE(OP_AND,And);
3776	INTERPRET_FAILED_CASE(OP_MOV,Mov);
3777	INTERPRET_FAILED_CASE(OP_STOSWD,StosWD);
3778	INTERPRET_FAILED_CASE(OP_INVLPG,InvlPg);
3779	INTERPRET_FAILED_CASE(OP_CPUID,CpuId);
3780	INTERPRET_FAILED_CASE(OP_MOV_CR,MovCRx);
3781	INTERPRET_FAILED_CASE(OP_MOV_DR,MovDRx);
3782	INTERPRET_FAILED_CASE(OP_LLDT,LLdt);
3783	INTERPRET_FAILED_CASE(OP_LIDT,LIdt);
3784	INTERPRET_FAILED_CASE(OP_LGDT,LGdt);
3785	INTERPRET_FAILED_CASE(OP_LMSW,Lmsw);
3786	INTERPRET_FAILED_CASE(OP_CLTS,Clts);
3787	INTERPRET_FAILED_CASE(OP_MONITOR,Monitor);
3788	INTERPRET_FAILED_CASE(OP_MWAIT,MWait);
3789	INTERPRET_FAILED_CASE(OP_RDMSR,Rdmsr);
3790	INTERPRET_FAILED_CASE(OP_WRMSR,Wrmsr);
3791	INTERPRET_FAILED_CASE(OP_ADD,Add);
3792	INTERPRET_FAILED_CASE(OP_SUB,Sub);
3793	INTERPRET_FAILED_CASE(OP_ADC,Adc);
3794	INTERPRET_FAILED_CASE(OP_BTR,Btr);
3795	INTERPRET_FAILED_CASE(OP_BTS,Bts);
3796	INTERPRET_FAILED_CASE(OP_BTC,Btc);
3797	INTERPRET_FAILED_CASE(OP_RDTSC,Rdtsc);
3798	INTERPRET_FAILED_CASE(OP_CMPXCHG, CmpXchg);
3799	INTERPRET_FAILED_CASE(OP_STI, Sti);
3800	INTERPRET_FAILED_CASE(OP_XADD,XAdd);
3801	INTERPRET_FAILED_CASE(OP_CMPXCHG8B,CmpXchg8b);
3802	INTERPRET_FAILED_CASE(OP_HLT, Hlt);
3803	INTERPRET_FAILED_CASE(OP_IRET,Iret);
3804	INTERPRET_FAILED_CASE(OP_WBINVD,WbInvd);
3805	INTERPRET_FAILED_CASE(OP_MOVNTPS,MovNTPS);
3806	# undef INTERPRET_FAILED_CASE
3807	default:
3808	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
3809	break;
3810	}
3811	# endif /* VBOX_WITH_STATISTICS */
3812	Log4(("EM: Refuse %u on grounds of accessing %u bytes\n", pDis->pCurInstr->uOpcode, pDis->Param1.cb));
3813	return VERR_EM_INTERPRETER;
3814	}
3815	}
3816	#endif
3817
3818	VBOXSTRICTRC rc;
3819	#if (defined(VBOX_STRICT) \|\| defined(LOG_ENABLED))
3820	LogFlow(("emInterpretInstructionCPU %s\n", emGetMnemonic(pDis)));
3821	#endif
3822	switch (pDis->pCurInstr->uOpcode)
3823	{
3824	/*
3825	* Macros for generating the right case statements.
3826	*/
3827	# ifndef VBOX_COMPARE_IEM_AND_EM
3828	# define INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3829	case opcode:\
3830	if (pDis->fPrefix & DISPREFIX_LOCK) \
3831	rc = emInterpretLock##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulateLock); \
3832	else \
3833	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3834	if (RT_SUCCESS(rc)) \
3835	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3836	else \
3837	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3838	return rc
3839	# else /* VBOX_COMPARE_IEM_AND_EM */
3840	# define INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3841	case opcode:\
3842	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3843	if (RT_SUCCESS(rc)) \
3844	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3845	else \
3846	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3847	return rc
3848	# endif /* VBOX_COMPARE_IEM_AND_EM */
3849
3850	#define INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate) \
3851	case opcode:\
3852	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
3853	if (RT_SUCCESS(rc)) \
3854	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3855	else \
3856	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3857	return rc
3858
3859	#define INTERPRET_CASE_EX_PARAM2(opcode, Instr, InstrFn, pfnEmulate) \
3860	INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate)
3861	#define INTERPRET_CASE_EX_LOCK_PARAM2(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
3862	INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock)
3863
3864	#define INTERPRET_CASE(opcode, Instr) \
3865	case opcode:\
3866	rc = emInterpret##Instr(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
3867	if (RT_SUCCESS(rc)) \
3868	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3869	else \
3870	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3871	return rc
3872
3873	#define INTERPRET_CASE_EX_DUAL_PARAM2(opcode, Instr, InstrFn) \
3874	case opcode:\
3875	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
3876	if (RT_SUCCESS(rc)) \
3877	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
3878	else \
3879	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
3880	return rc
3881
3882	#define INTERPRET_STAT_CASE(opcode, Instr) \
3883	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); return VERR_EM_INTERPRETER;
3884
3885	/*
3886	* The actual case statements.
3887	*/
3888	INTERPRET_CASE(OP_XCHG,Xchg);
3889	INTERPRET_CASE_EX_PARAM2(OP_DEC,Dec, IncDec, EMEmulateDec);
3890	INTERPRET_CASE_EX_PARAM2(OP_INC,Inc, IncDec, EMEmulateInc);
3891	INTERPRET_CASE(OP_POP,Pop);
3892	INTERPRET_CASE_EX_LOCK_PARAM3(OP_OR, Or, OrXorAnd, EMEmulateOr, EMEmulateLockOr);
3893	INTERPRET_CASE_EX_LOCK_PARAM3(OP_XOR,Xor, OrXorAnd, EMEmulateXor, EMEmulateLockXor);
3894	INTERPRET_CASE_EX_LOCK_PARAM3(OP_AND,And, OrXorAnd, EMEmulateAnd, EMEmulateLockAnd);
3895	INTERPRET_CASE(OP_MOV,Mov);
3896	#ifndef IN_RC
3897	INTERPRET_CASE(OP_STOSWD,StosWD);
3898	#endif
3899	INTERPRET_CASE(OP_INVLPG,InvlPg);
3900	INTERPRET_CASE(OP_CPUID,CpuId);
3901	INTERPRET_CASE(OP_MOV_CR,MovCRx);
3902	INTERPRET_CASE(OP_MOV_DR,MovDRx);
3903	#ifdef IN_RING0
3904	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LIDT, LIdt, LIGdt);
3905	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LGDT, LGdt, LIGdt);
3906	#endif
3907	INTERPRET_CASE(OP_LLDT,LLdt);
3908	INTERPRET_CASE(OP_LMSW,Lmsw);
3909	#ifdef EM_EMULATE_SMSW
3910	INTERPRET_CASE(OP_SMSW,Smsw);
3911	#endif
3912	INTERPRET_CASE(OP_CLTS,Clts);
3913	INTERPRET_CASE(OP_MONITOR, Monitor);
3914	INTERPRET_CASE(OP_MWAIT, MWait);
3915	INTERPRET_CASE(OP_RDMSR, Rdmsr);
3916	INTERPRET_CASE(OP_WRMSR, Wrmsr);
3917	INTERPRET_CASE_EX_PARAM3(OP_ADD,Add, AddSub, EMEmulateAdd);
3918	INTERPRET_CASE_EX_PARAM3(OP_SUB,Sub, AddSub, EMEmulateSub);
3919	INTERPRET_CASE(OP_ADC,Adc);
3920	INTERPRET_CASE_EX_LOCK_PARAM2(OP_BTR,Btr, BitTest, EMEmulateBtr, EMEmulateLockBtr);
3921	INTERPRET_CASE_EX_PARAM2(OP_BTS,Bts, BitTest, EMEmulateBts);
3922	INTERPRET_CASE_EX_PARAM2(OP_BTC,Btc, BitTest, EMEmulateBtc);
3923	INTERPRET_CASE(OP_RDPMC,Rdpmc);
3924	INTERPRET_CASE(OP_RDTSC,Rdtsc);
3925	INTERPRET_CASE(OP_CMPXCHG, CmpXchg);
3926	#ifdef IN_RC
3927	INTERPRET_CASE(OP_STI,Sti);
3928	INTERPRET_CASE(OP_XADD, XAdd);
3929	INTERPRET_CASE(OP_IRET,Iret);
3930	#endif
3931	INTERPRET_CASE(OP_CMPXCHG8B, CmpXchg8b);
3932	INTERPRET_CASE(OP_HLT,Hlt);
3933	INTERPRET_CASE(OP_WBINVD,WbInvd);
3934	#ifdef VBOX_WITH_STATISTICS
3935	# ifndef IN_RC
3936	INTERPRET_STAT_CASE(OP_XADD, XAdd);
3937	# endif
3938	INTERPRET_STAT_CASE(OP_MOVNTPS,MovNTPS);
3939	#endif
3940
3941	default:
3942	Log3(("emInterpretInstructionCPU: opcode=%d\n", pDis->pCurInstr->uOpcode));
3943	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
3944	return VERR_EM_INTERPRETER;
3945
3946	#undef INTERPRET_CASE_EX_PARAM2
3947	#undef INTERPRET_STAT_CASE
3948	#undef INTERPRET_CASE_EX
3949	#undef INTERPRET_CASE
3950	} /* switch (opcode) */
3951	/* not reached */
3952	}
3953
3954	/**
3955	* Interprets the current instruction using the supplied DISCPUSTATE structure.
3956	*
3957	* EIP is NOT updated!
3958	*
3959	* @returns VBox strict status code.
3960	* @retval VINF_* Scheduling instructions. When these are returned, it
3961	* starts to get a bit tricky to know whether code was
3962	* executed or not... We'll address this when it becomes a problem.
3963	* @retval VERR_EM_INTERPRETER Something we can't cope with.
3964	* @retval VERR_* Fatal errors.
3965	*
3966	* @param pVCpu Pointer to the VMCPU.
3967	* @param pDis The disassembler cpu state for the instruction to be
3968	* interpreted.
3969	* @param pRegFrame The register frame. EIP is NOT changed!
3970	* @param pvFault The fault address (CR2).
3971	* @param pcbSize Size of the write (if applicable).
3972	* @param enmCodeType Code type (user/supervisor)
3973	*
3974	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
3975	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
3976	* to worry about e.g. invalid modrm combinations (!)
3977	*
3978	* @todo At this time we do NOT check if the instruction overwrites vital information.
3979	* Make sure this can't happen!! (will add some assertions/checks later)
3980	*/
3981	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPUOuter(PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
3982	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
3983	{
3984	STAM_PROFILE_START(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
3985	VBOXSTRICTRC rc = emInterpretInstructionCPU(pVCpu->CTX_SUFF(pVM), pVCpu, pDis, pRegFrame, pvFault, enmCodeType, pcbSize);
3986	STAM_PROFILE_STOP(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
3987	if (RT_SUCCESS(rc))
3988	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretSucceeded));
3989	else
3990	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretFailed));
3991	return rc;
3992	}
3993
3994
3995	#endif /* !VBOX_WITH_IEM */

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/VMM/VMMAll/EMAll.cpp@ 51271

Download in other formats: