EMAll.cpp@ 31996

Last change on this file since 31996 was 31636, checked in by vboxsync, 14 years ago
EM: Addressed VBOXSTRICTRC todo from r64673. Decided to only use VBOXSTRICTRC on the methods that would actually return VINF_EM_* stuff.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 106.7 KB

Line
1	/* $Id: EMAll.cpp 31636 2010-08-13 12:03:15Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor(/Manager) - All contexts
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 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/em.h>
23	#include <VBox/mm.h>
24	#include <VBox/selm.h>
25	#include <VBox/patm.h>
26	#include <VBox/csam.h>
27	#include <VBox/pgm.h>
28	#include <VBox/iom.h>
29	#include <VBox/stam.h>
30	#include "EMInternal.h"
31	#include <VBox/vm.h>
32	#include <VBox/vmm.h>
33	#include <VBox/hwaccm.h>
34	#include <VBox/tm.h>
35	#include <VBox/pdmapi.h>
36	#include <VBox/param.h>
37	#include <VBox/err.h>
38	#include <VBox/dis.h>
39	#include <VBox/disopcode.h>
40	#include <VBox/log.h>
41	#include <include/internal/pgm.h>
42	#include <iprt/assert.h>
43	#include <iprt/asm.h>
44	#include <iprt/string.h>
45
46
47	/*******************************************************************************
48	* Defined Constants And Macros *
49	*******************************************************************************/
50	/** @def EM_ASSERT_FAULT_RETURN
51	* Safety check.
52	*
53	* Could in theory misfire on a cross page boundary access...
54	*
55	* Currently disabled because the CSAM (+ PATM) patch monitoring occasionally
56	* turns up an alias page instead of the original faulting one and annoying the
57	* heck out of anyone running a debug build. See @bugref{2609} and @bugref{1931}.
58	*/
59	#if 0
60	# define EM_ASSERT_FAULT_RETURN(expr, rc) AssertReturn(expr, rc)
61	#else
62	# define EM_ASSERT_FAULT_RETURN(expr, rc) do { } while (0)
63	#endif
64
65	/* Used to pass information during instruction disassembly. */
66	typedef struct
67	{
68	PVM pVM;
69	PVMCPU pVCpu;
70	RTGCPTR GCPtr;
71	uint8_t aOpcode[8];
72	} EMDISSTATE, *PEMDISSTATE;
73
74	/*******************************************************************************
75	* Internal Functions *
76	*******************************************************************************/
77	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPU(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
78	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize);
79
80
81
82	/**
83	* Get the current execution manager status.
84	*
85	* @returns Current status.
86	* @param pVCpu The VMCPU to operate on.
87	*/
88	VMMDECL(EMSTATE) EMGetState(PVMCPU pVCpu)
89	{
90	return pVCpu->em.s.enmState;
91	}
92
93	/**
94	* Sets the current execution manager status. (use only when you know what you're doing!)
95	*
96	* @param pVCpu The VMCPU to operate on.
97	*/
98	VMMDECL(void) EMSetState(PVMCPU pVCpu, EMSTATE enmNewState)
99	{
100	/* Only allowed combination: */
101	Assert(pVCpu->em.s.enmState == EMSTATE_WAIT_SIPI && enmNewState == EMSTATE_HALTED);
102	pVCpu->em.s.enmState = enmNewState;
103	}
104
105
106	/**
107	* Read callback for disassembly function; supports reading bytes that cross a page boundary
108	*
109	* @returns VBox status code.
110	* @param pSrc GC source pointer
111	* @param pDest HC destination pointer
112	* @param cb Number of bytes to read
113	* @param dwUserdata Callback specific user data (pDis)
114	*
115	*/
116	DECLCALLBACK(int) EMReadBytes(RTUINTPTR pSrc, uint8_t pDest, unsigned cb, void pvUserdata)
117	{
118	PDISCPUSTATE pDis = (PDISCPUSTATE)pvUserdata;
119	PEMDISSTATE pState = (PEMDISSTATE)pDis->apvUserData[0];
120	PVM pVM = pState->pVM;
121	PVMCPU pVCpu = pState->pVCpu;
122
123	# ifdef IN_RING0
124	int rc;
125
126	if ( pState->GCPtr
127	&& pSrc + cb <= pState->GCPtr + sizeof(pState->aOpcode))
128	{
129	unsigned offset = pSrc - pState->GCPtr;
130
131	Assert(pSrc >= pState->GCPtr);
132
133	for (unsigned i=0; i<cb; i++)
134	{
135	pDest[i] = pState->aOpcode[offset + i];
136	}
137	return VINF_SUCCESS;
138	}
139
140	rc = PGMPhysSimpleReadGCPtr(pVCpu, pDest, pSrc, cb);
141	AssertMsgRC(rc, ("PGMPhysSimpleReadGCPtr failed for pSrc=%RGv cb=%x rc=%d\n", pSrc, cb, rc));
142	# elif defined(IN_RING3)
143	if (!PATMIsPatchGCAddr(pVM, pSrc))
144	{
145	int rc = PGMPhysSimpleReadGCPtr(pVCpu, pDest, pSrc, cb);
146	AssertRC(rc);
147	}
148	else
149	memcpy(pDest, PATMR3GCPtrToHCPtr(pVM, pSrc), cb);
150
151	# elif defined(IN_RC)
152	if (!PATMIsPatchGCAddr(pVM, pSrc))
153	{
154	int rc = MMGCRamRead(pVM, pDest, (void *)(uintptr_t)pSrc, cb);
155	if (rc == VERR_ACCESS_DENIED)
156	{
157	/* Recently flushed; access the data manually. */
158	rc = PGMPhysSimpleReadGCPtr(pVCpu, pDest, pSrc, cb);
159	AssertRC(rc);
160	}
161	}
162	else /* the hypervisor region is always present. */
163	memcpy(pDest, (RTRCPTR)(uintptr_t)pSrc, cb);
164
165	# endif /* IN_RING3 */
166	return VINF_SUCCESS;
167	}
168
169
170	#ifndef IN_RC
171	DECLINLINE(int) emDisCoreOne(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, RTGCUINTPTR InstrGC, uint32_t *pOpsize)
172	{
173	EMDISSTATE State;
174
175	State.pVM = pVM;
176	State.pVCpu = pVCpu;
177	int rc = PGMPhysSimpleReadGCPtr(pVCpu, &State.aOpcode, InstrGC, sizeof(State.aOpcode));
178	if (RT_SUCCESS(rc))
179	{
180	State.GCPtr = InstrGC;
181	}
182	else
183	{
184	if (PAGE_ADDRESS(InstrGC) == PAGE_ADDRESS(InstrGC + sizeof(State.aOpcode) - 1))
185	{
186	if (rc == VERR_PAGE_TABLE_NOT_PRESENT)
187	HWACCMInvalidatePage(pVCpu, InstrGC);
188
189	Log(("emDisCoreOne: read failed with %d\n", rc));
190	return rc;
191	}
192	State.GCPtr = NIL_RTGCPTR;
193	}
194	return DISCoreOneEx(InstrGC, pDis->mode, EMReadBytes, &State, pDis, pOpsize);
195	}
196
197	#else /* IN_RC */
198
199	DECLINLINE(int) emDisCoreOne(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, RTGCUINTPTR InstrGC, uint32_t *pOpsize)
200	{
201	EMDISSTATE State;
202
203	State.pVM = pVM;
204	State.pVCpu = pVCpu;
205	State.GCPtr = InstrGC;
206
207	return DISCoreOneEx(InstrGC, pDis->mode, EMReadBytes, &State, pDis, pOpsize);
208	}
209
210	#endif /* IN_RC */
211
212
213	/**
214	* Disassembles one instruction.
215	*
216	* @returns VBox status code, see SELMToFlatEx and EMInterpretDisasOneEx for
217	* details.
218	* @retval VERR_INTERNAL_ERROR on DISCoreOneEx failure.
219	*
220	* @param pVM The VM handle.
221	* @param pVCpu The VMCPU handle.
222	* @param pCtxCore The context core (used for both the mode and instruction).
223	* @param pDis Where to return the parsed instruction info.
224	* @param pcbInstr Where to return the instruction size. (optional)
225	*/
226	VMMDECL(int) EMInterpretDisasOne(PVM pVM, PVMCPU pVCpu, PCCPUMCTXCORE pCtxCore, PDISCPUSTATE pDis, unsigned *pcbInstr)
227	{
228	RTGCPTR GCPtrInstr;
229	int rc = SELMToFlatEx(pVM, DIS_SELREG_CS, pCtxCore, pCtxCore->rip, 0, &GCPtrInstr);
230	if (RT_FAILURE(rc))
231	{
232	Log(("EMInterpretDisasOne: Failed to convert %RTsel:%RGv (cpl=%d) - rc=%Rrc !!\n",
233	pCtxCore->cs, (RTGCPTR)pCtxCore->rip, pCtxCore->ss & X86_SEL_RPL, rc));
234	return rc;
235	}
236	return EMInterpretDisasOneEx(pVM, pVCpu, (RTGCUINTPTR)GCPtrInstr, pCtxCore, pDis, pcbInstr);
237	}
238
239
240	/**
241	* Disassembles one instruction.
242	*
243	* This is used by internally by the interpreter and by trap/access handlers.
244	*
245	* @returns VBox status code.
246	* @retval VERR_INTERNAL_ERROR on DISCoreOneEx failure.
247	*
248	* @param pVM The VM handle.
249	* @param pVCpu The VMCPU handle.
250	* @param GCPtrInstr The flat address of the instruction.
251	* @param pCtxCore The context core (used to determine the cpu mode).
252	* @param pDis Where to return the parsed instruction info.
253	* @param pcbInstr Where to return the instruction size. (optional)
254	*/
255	VMMDECL(int) EMInterpretDisasOneEx(PVM pVM, PVMCPU pVCpu, RTGCUINTPTR GCPtrInstr, PCCPUMCTXCORE pCtxCore, PDISCPUSTATE pDis, unsigned *pcbInstr)
256	{
257	int rc;
258	EMDISSTATE State;
259
260	State.pVM = pVM;
261	State.pVCpu = pVCpu;
262
263	#ifdef IN_RC
264	State.GCPtr = GCPtrInstr;
265	#else /* ring 0/3 */
266	rc = PGMPhysSimpleReadGCPtr(pVCpu, &State.aOpcode, GCPtrInstr, sizeof(State.aOpcode));
267	if (RT_SUCCESS(rc))
268	{
269	State.GCPtr = GCPtrInstr;
270	}
271	else
272	{
273	if (PAGE_ADDRESS(GCPtrInstr) == PAGE_ADDRESS(GCPtrInstr + sizeof(State.aOpcode) - 1))
274	{
275	if (rc == VERR_PAGE_TABLE_NOT_PRESENT)
276	HWACCMInvalidatePage(pVCpu, GCPtrInstr);
277
278	Log(("EMInterpretDisasOneEx: read failed with %d\n", rc));
279	return rc;
280	}
281	State.GCPtr = NIL_RTGCPTR;
282	}
283	#endif
284
285	rc = DISCoreOneEx(GCPtrInstr, SELMGetCpuModeFromSelector(pVM, pCtxCore->eflags, pCtxCore->cs, (PCPUMSELREGHID)&pCtxCore->csHid),
286	EMReadBytes, &State,
287	pDis, pcbInstr);
288	if (RT_SUCCESS(rc))
289	return VINF_SUCCESS;
290	AssertMsgFailed(("DISCoreOne failed to GCPtrInstr=%RGv rc=%Rrc\n", GCPtrInstr, rc));
291	return VERR_INTERNAL_ERROR;
292	}
293
294
295	/**
296	* Interprets the current instruction.
297	*
298	* @returns VBox status code.
299	* @retval VINF_* Scheduling instructions.
300	* @retval VERR_EM_INTERPRETER Something we can't cope with.
301	* @retval VERR_* Fatal errors.
302	*
303	* @param pVM The VM handle.
304	* @param pVCpu The VMCPU handle.
305	* @param pRegFrame The register frame.
306	* Updates the EIP if an instruction was executed successfully.
307	* @param pvFault The fault address (CR2).
308	* @param pcbSize Size of the write (if applicable).
309	*
310	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
311	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
312	* to worry about e.g. invalid modrm combinations (!)
313	*/
314	VMMDECL(VBOXSTRICTRC) EMInterpretInstruction(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
315	{
316	RTGCPTR pbCode;
317
318	LogFlow(("EMInterpretInstruction %RGv fault %RGv\n", (RTGCPTR)pRegFrame->rip, pvFault));
319	VBOXSTRICTRC rc = SELMToFlatEx(pVM, DIS_SELREG_CS, pRegFrame, pRegFrame->rip, 0, &pbCode);
320	if (RT_SUCCESS(rc))
321	{
322	uint32_t cbOp;
323	PDISCPUSTATE pDis = &pVCpu->em.s.DisState;
324	pDis->mode = SELMGetCpuModeFromSelector(pVM, pRegFrame->eflags, pRegFrame->cs, &pRegFrame->csHid);
325	rc = emDisCoreOne(pVM, pVCpu, pDis, (RTGCUINTPTR)pbCode, &cbOp);
326	if (RT_SUCCESS(rc))
327	{
328	Assert(cbOp == pDis->opsize);
329	rc = EMInterpretInstructionCPU(pVM, pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_SUPERVISOR, pcbSize);
330	if (RT_SUCCESS(rc))
331	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
332
333	return rc;
334	}
335	}
336	return VERR_EM_INTERPRETER;
337	}
338
339
340	/**
341	* Interprets the current instruction using the supplied DISCPUSTATE structure.
342	*
343	* EIP is NOT updated!
344	*
345	* @returns VBox strict status code.
346	* @retval VINF_* Scheduling instructions. When these are returned, it
347	* starts to get a bit tricky to know whether code was
348	* executed or not... We'll address this when it becomes a problem.
349	* @retval VERR_EM_INTERPRETER Something we can't cope with.
350	* @retval VERR_* Fatal errors.
351	*
352	* @param pVM The VM handle.
353	* @param pVCpu The VMCPU handle.
354	* @param pDis The disassembler cpu state for the instruction to be
355	* interpreted.
356	* @param pRegFrame The register frame. EIP is NOT changed!
357	* @param pvFault The fault address (CR2).
358	* @param pcbSize Size of the write (if applicable).
359	* @param enmCodeType Code type (user/supervisor)
360	*
361	* @remark Invalid opcode exceptions have a higher priority than GP (see Intel
362	* Architecture System Developers Manual, Vol 3, 5.5) so we don't need
363	* to worry about e.g. invalid modrm combinations (!)
364	*
365	* @todo At this time we do NOT check if the instruction overwrites vital information.
366	* Make sure this can't happen!! (will add some assertions/checks later)
367	*/
368	VMMDECL(VBOXSTRICTRC) EMInterpretInstructionCPU(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
369	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
370	{
371	STAM_PROFILE_START(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
372	VBOXSTRICTRC rc = emInterpretInstructionCPU(pVM, pVCpu, pDis, pRegFrame, pvFault, enmCodeType, pcbSize);
373	STAM_PROFILE_STOP(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Emulate), a);
374	if (RT_SUCCESS(rc))
375	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretSucceeded));
376	else
377	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,InterpretFailed));
378	return rc;
379	}
380
381
382	/**
383	* Interpret a port I/O instruction.
384	*
385	* @returns VBox status code suitable for scheduling.
386	* @param pVM The VM handle.
387	* @param pVCpu The VMCPU handle.
388	* @param pCtxCore The context core. This will be updated on successful return.
389	* @param pDis The instruction to interpret.
390	* @param cbOp The size of the instruction.
391	* @remark This may raise exceptions.
392	*/
393	VMMDECL(VBOXSTRICTRC) EMInterpretPortIO(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, PDISCPUSTATE pDis, uint32_t cbOp)
394	{
395	/*
396	* Hand it on to IOM.
397	*/
398	#ifdef IN_RC
399	VBOXSTRICTRC rcStrict = IOMGCIOPortHandler(pVM, pCtxCore, pDis);
400	if (IOM_SUCCESS(rcStrict))
401	pCtxCore->rip += cbOp;
402	return rcStrict;
403	#else
404	AssertReleaseMsgFailed(("not implemented\n"));
405	return VERR_NOT_IMPLEMENTED;
406	#endif
407	}
408
409
410	DECLINLINE(int) emRamRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCPTR GCPtrSrc, uint32_t cb)
411	{
412	#ifdef IN_RC
413	int rc = MMGCRamRead(pVM, pvDst, (void *)(uintptr_t)GCPtrSrc, cb);
414	if (RT_LIKELY(rc != VERR_ACCESS_DENIED))
415	return rc;
416	/*
417	* The page pool cache may end up here in some cases because it
418	* flushed one of the shadow mappings used by the trapping
419	* instruction and it either flushed the TLB or the CPU reused it.
420	*/
421	#endif
422	return PGMPhysInterpretedReadNoHandlers(pVCpu, pCtxCore, pvDst, GCPtrSrc, cb, /fMayTrap/ false);
423	}
424
425
426	DECLINLINE(int) emRamWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pCtxCore, RTGCPTR GCPtrDst, const void *pvSrc, uint32_t cb)
427	{
428	/* Don't use MMGCRamWrite here as it does not respect zero pages, shared
429	pages or write monitored pages. */
430	return PGMPhysInterpretedWriteNoHandlers(pVCpu, pCtxCore, GCPtrDst, pvSrc, cb, /fMayTrap/ false);
431	}
432
433
434	/** Convert sel:addr to a flat GC address. */
435	DECLINLINE(RTGCPTR) emConvertToFlatAddr(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pDis, POP_PARAMETER pParam, RTGCPTR pvAddr)
436	{
437	DIS_SELREG enmPrefixSeg = DISDetectSegReg(pDis, pParam);
438	return SELMToFlat(pVM, enmPrefixSeg, pRegFrame, pvAddr);
439	}
440
441
442	#if defined(VBOX_STRICT) \|\| defined(LOG_ENABLED)
443	/**
444	* Get the mnemonic for the disassembled instruction.
445	*
446	* GC/R0 doesn't include the strings in the DIS tables because
447	* of limited space.
448	*/
449	static const char *emGetMnemonic(PDISCPUSTATE pDis)
450	{
451	switch (pDis->pCurInstr->opcode)
452	{
453	case OP_XCHG: return "Xchg";
454	case OP_DEC: return "Dec";
455	case OP_INC: return "Inc";
456	case OP_POP: return "Pop";
457	case OP_OR: return "Or";
458	case OP_AND: return "And";
459	case OP_MOV: return "Mov";
460	case OP_INVLPG: return "InvlPg";
461	case OP_CPUID: return "CpuId";
462	case OP_MOV_CR: return "MovCRx";
463	case OP_MOV_DR: return "MovDRx";
464	case OP_LLDT: return "LLdt";
465	case OP_LGDT: return "LGdt";
466	case OP_LIDT: return "LIdt";
467	case OP_CLTS: return "Clts";
468	case OP_MONITOR: return "Monitor";
469	case OP_MWAIT: return "MWait";
470	case OP_RDMSR: return "Rdmsr";
471	case OP_WRMSR: return "Wrmsr";
472	case OP_ADD: return "Add";
473	case OP_ADC: return "Adc";
474	case OP_SUB: return "Sub";
475	case OP_SBB: return "Sbb";
476	case OP_RDTSC: return "Rdtsc";
477	case OP_STI: return "Sti";
478	case OP_CLI: return "Cli";
479	case OP_XADD: return "XAdd";
480	case OP_HLT: return "Hlt";
481	case OP_IRET: return "Iret";
482	case OP_MOVNTPS: return "MovNTPS";
483	case OP_STOSWD: return "StosWD";
484	case OP_WBINVD: return "WbInvd";
485	case OP_XOR: return "Xor";
486	case OP_BTR: return "Btr";
487	case OP_BTS: return "Bts";
488	case OP_BTC: return "Btc";
489	case OP_LMSW: return "Lmsw";
490	case OP_SMSW: return "Smsw";
491	case OP_CMPXCHG: return pDis->prefix & PREFIX_LOCK ? "Lock CmpXchg" : "CmpXchg";
492	case OP_CMPXCHG8B: return pDis->prefix & PREFIX_LOCK ? "Lock CmpXchg8b" : "CmpXchg8b";
493
494	default:
495	Log(("Unknown opcode %d\n", pDis->pCurInstr->opcode));
496	return "???";
497	}
498	}
499	#endif /* VBOX_STRICT \|\| LOG_ENABLED */
500
501
502	/**
503	* XCHG instruction emulation.
504	*/
505	static int emInterpretXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
506	{
507	OP_PARAMVAL param1, param2;
508
509	/* Source to make DISQueryParamVal read the register value - ugly hack */
510	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
511	if(RT_FAILURE(rc))
512	return VERR_EM_INTERPRETER;
513
514	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
515	if(RT_FAILURE(rc))
516	return VERR_EM_INTERPRETER;
517
518	#ifdef IN_RC
519	if (TRPMHasTrap(pVCpu))
520	{
521	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
522	{
523	#endif
524	RTGCPTR pParam1 = 0, pParam2 = 0;
525	uint64_t valpar1, valpar2;
526
527	AssertReturn(pDis->param1.size == pDis->param2.size, VERR_EM_INTERPRETER);
528	switch(param1.type)
529	{
530	case PARMTYPE_IMMEDIATE: /* register type is translated to this one too */
531	valpar1 = param1.val.val64;
532	break;
533
534	case PARMTYPE_ADDRESS:
535	pParam1 = (RTGCPTR)param1.val.val64;
536	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pParam1);
537	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
538	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
539	if (RT_FAILURE(rc))
540	{
541	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
542	return VERR_EM_INTERPRETER;
543	}
544	break;
545
546	default:
547	AssertFailed();
548	return VERR_EM_INTERPRETER;
549	}
550
551	switch(param2.type)
552	{
553	case PARMTYPE_ADDRESS:
554	pParam2 = (RTGCPTR)param2.val.val64;
555	pParam2 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param2, pParam2);
556	EM_ASSERT_FAULT_RETURN(pParam2 == pvFault, VERR_EM_INTERPRETER);
557	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar2, pParam2, param2.size);
558	if (RT_FAILURE(rc))
559	{
560	AssertMsgFailed(("MMGCRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
561	}
562	break;
563
564	case PARMTYPE_IMMEDIATE:
565	valpar2 = param2.val.val64;
566	break;
567
568	default:
569	AssertFailed();
570	return VERR_EM_INTERPRETER;
571	}
572
573	/* Write value of parameter 2 to parameter 1 (reg or memory address) */
574	if (pParam1 == 0)
575	{
576	Assert(param1.type == PARMTYPE_IMMEDIATE); /* register actually */
577	switch(param1.size)
578	{
579	case 1: //special case for AH etc
580	rc = DISWriteReg8(pRegFrame, pDis->param1.base.reg_gen, (uint8_t )valpar2); break;
581	case 2: rc = DISWriteReg16(pRegFrame, pDis->param1.base.reg_gen, (uint16_t)valpar2); break;
582	case 4: rc = DISWriteReg32(pRegFrame, pDis->param1.base.reg_gen, (uint32_t)valpar2); break;
583	case 8: rc = DISWriteReg64(pRegFrame, pDis->param1.base.reg_gen, valpar2); break;
584	default: AssertFailedReturn(VERR_EM_INTERPRETER);
585	}
586	if (RT_FAILURE(rc))
587	return VERR_EM_INTERPRETER;
588	}
589	else
590	{
591	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar2, param1.size);
592	if (RT_FAILURE(rc))
593	{
594	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
595	return VERR_EM_INTERPRETER;
596	}
597	}
598
599	/* Write value of parameter 1 to parameter 2 (reg or memory address) */
600	if (pParam2 == 0)
601	{
602	Assert(param2.type == PARMTYPE_IMMEDIATE); /* register actually */
603	switch(param2.size)
604	{
605	case 1: //special case for AH etc
606	rc = DISWriteReg8(pRegFrame, pDis->param2.base.reg_gen, (uint8_t )valpar1); break;
607	case 2: rc = DISWriteReg16(pRegFrame, pDis->param2.base.reg_gen, (uint16_t)valpar1); break;
608	case 4: rc = DISWriteReg32(pRegFrame, pDis->param2.base.reg_gen, (uint32_t)valpar1); break;
609	case 8: rc = DISWriteReg64(pRegFrame, pDis->param2.base.reg_gen, valpar1); break;
610	default: AssertFailedReturn(VERR_EM_INTERPRETER);
611	}
612	if (RT_FAILURE(rc))
613	return VERR_EM_INTERPRETER;
614	}
615	else
616	{
617	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam2, &valpar1, param2.size);
618	if (RT_FAILURE(rc))
619	{
620	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
621	return VERR_EM_INTERPRETER;
622	}
623	}
624
625	*pcbSize = param2.size;
626	return VINF_SUCCESS;
627	#ifdef IN_RC
628	}
629	}
630	#endif
631	return VERR_EM_INTERPRETER;
632	}
633
634
635	/**
636	* INC and DEC emulation.
637	*/
638	static int emInterpretIncDec(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
639	PFNEMULATEPARAM2 pfnEmulate)
640	{
641	OP_PARAMVAL param1;
642
643	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
644	if(RT_FAILURE(rc))
645	return VERR_EM_INTERPRETER;
646
647	#ifdef IN_RC
648	if (TRPMHasTrap(pVCpu))
649	{
650	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
651	{
652	#endif
653	RTGCPTR pParam1 = 0;
654	uint64_t valpar1;
655
656	if (param1.type == PARMTYPE_ADDRESS)
657	{
658	pParam1 = (RTGCPTR)param1.val.val64;
659	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pParam1);
660	#ifdef IN_RC
661	/* Safety check (in theory it could cross a page boundary and fault there though) */
662	AssertReturn(pParam1 == pvFault, VERR_EM_INTERPRETER);
663	#endif
664	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
665	if (RT_FAILURE(rc))
666	{
667	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
668	return VERR_EM_INTERPRETER;
669	}
670	}
671	else
672	{
673	AssertFailed();
674	return VERR_EM_INTERPRETER;
675	}
676
677	uint32_t eflags;
678
679	eflags = pfnEmulate(&valpar1, param1.size);
680
681	/* Write result back */
682	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
683	if (RT_FAILURE(rc))
684	{
685	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
686	return VERR_EM_INTERPRETER;
687	}
688
689	/* Update guest's eflags and finish. */
690	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
691	\| (eflags & (X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
692
693	/* All done! */
694	*pcbSize = param1.size;
695	return VINF_SUCCESS;
696	#ifdef IN_RC
697	}
698	}
699	#endif
700	return VERR_EM_INTERPRETER;
701	}
702
703
704	/**
705	* POP Emulation.
706	*/
707	static int emInterpretPop(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
708	{
709	Assert(pDis->mode != CPUMODE_64BIT); /** @todo check */
710	OP_PARAMVAL param1;
711	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
712	if(RT_FAILURE(rc))
713	return VERR_EM_INTERPRETER;
714
715	#ifdef IN_RC
716	if (TRPMHasTrap(pVCpu))
717	{
718	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
719	{
720	#endif
721	RTGCPTR pParam1 = 0;
722	uint32_t valpar1;
723	RTGCPTR pStackVal;
724
725	/* Read stack value first */
726	if (SELMGetCpuModeFromSelector(pVM, pRegFrame->eflags, pRegFrame->ss, &pRegFrame->ssHid) == CPUMODE_16BIT)
727	return VERR_EM_INTERPRETER; /* No legacy 16 bits stuff here, please. */
728
729	/* Convert address; don't bother checking limits etc, as we only read here */
730	pStackVal = SELMToFlat(pVM, DIS_SELREG_SS, pRegFrame, (RTGCPTR)pRegFrame->esp);
731	if (pStackVal == 0)
732	return VERR_EM_INTERPRETER;
733
734	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pStackVal, param1.size);
735	if (RT_FAILURE(rc))
736	{
737	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
738	return VERR_EM_INTERPRETER;
739	}
740
741	if (param1.type == PARMTYPE_ADDRESS)
742	{
743	pParam1 = (RTGCPTR)param1.val.val64;
744
745	/* pop [esp+xx] uses esp after the actual pop! */
746	AssertCompile(USE_REG_ESP == USE_REG_SP);
747	if ( (pDis->param1.flags & USE_BASE)
748	&& (pDis->param1.flags & (USE_REG_GEN16\|USE_REG_GEN32))
749	&& pDis->param1.base.reg_gen == USE_REG_ESP
750	)
751	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + param1.size);
752
753	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pParam1);
754	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault \|\| (RTGCPTR)pRegFrame->esp == pvFault, VERR_EM_INTERPRETER);
755	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
756	if (RT_FAILURE(rc))
757	{
758	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
759	return VERR_EM_INTERPRETER;
760	}
761
762	/* Update ESP as the last step */
763	pRegFrame->esp += param1.size;
764	}
765	else
766	{
767	#ifndef DEBUG_bird // annoying assertion.
768	AssertFailed();
769	#endif
770	return VERR_EM_INTERPRETER;
771	}
772
773	/* All done! */
774	*pcbSize = param1.size;
775	return VINF_SUCCESS;
776	#ifdef IN_RC
777	}
778	}
779	#endif
780	return VERR_EM_INTERPRETER;
781	}
782
783
784	/**
785	* XOR/OR/AND Emulation.
786	*/
787	static int emInterpretOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
788	PFNEMULATEPARAM3 pfnEmulate)
789	{
790	OP_PARAMVAL param1, param2;
791
792	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
793	if(RT_FAILURE(rc))
794	return VERR_EM_INTERPRETER;
795
796	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
797	if(RT_FAILURE(rc))
798	return VERR_EM_INTERPRETER;
799
800	#ifdef IN_RC
801	if (TRPMHasTrap(pVCpu))
802	{
803	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
804	{
805	#endif
806	RTGCPTR pParam1;
807	uint64_t valpar1, valpar2;
808
809	if (pDis->param1.size != pDis->param2.size)
810	{
811	if (pDis->param1.size < pDis->param2.size)
812	{
813	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->param1.size, pDis->param2.size)); /* should never happen! */
814	return VERR_EM_INTERPRETER;
815	}
816	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
817	pDis->param2.size = pDis->param1.size;
818	param2.size = param1.size;
819	}
820
821	/* The destination is always a virtual address */
822	if (param1.type == PARMTYPE_ADDRESS)
823	{
824	pParam1 = (RTGCPTR)param1.val.val64;
825	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pParam1);
826	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
827	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
828	if (RT_FAILURE(rc))
829	{
830	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
831	return VERR_EM_INTERPRETER;
832	}
833	}
834	else
835	{
836	AssertFailed();
837	return VERR_EM_INTERPRETER;
838	}
839
840	/* Register or immediate data */
841	switch(param2.type)
842	{
843	case PARMTYPE_IMMEDIATE: /* both immediate data and register (ugly) */
844	valpar2 = param2.val.val64;
845	break;
846
847	default:
848	AssertFailed();
849	return VERR_EM_INTERPRETER;
850	}
851
852	LogFlow(("emInterpretOrXorAnd %s %RGv %RX64 - %RX64 size %d (%d)\n", emGetMnemonic(pDis), pParam1, valpar1, valpar2, param2.size, param1.size));
853
854	/* Data read, emulate instruction. */
855	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
856
857	LogFlow(("emInterpretOrXorAnd %s result %RX64\n", emGetMnemonic(pDis), valpar1));
858
859	/* Update guest's eflags and finish. */
860	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
861	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
862
863	/* And write it back */
864	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
865	if (RT_SUCCESS(rc))
866	{
867	/* All done! */
868	*pcbSize = param2.size;
869	return VINF_SUCCESS;
870	}
871	#ifdef IN_RC
872	}
873	}
874	#endif
875	return VERR_EM_INTERPRETER;
876	}
877
878
879	/**
880	* LOCK XOR/OR/AND Emulation.
881	*/
882	static int emInterpretLockOrXorAnd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
883	uint32_t *pcbSize, PFNEMULATELOCKPARAM3 pfnEmulate)
884	{
885	void *pvParam1;
886	OP_PARAMVAL param1, param2;
887
888	#if HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL_IN_R0)
889	Assert(pDis->param1.size <= 4);
890	#endif
891
892	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
893	if(RT_FAILURE(rc))
894	return VERR_EM_INTERPRETER;
895
896	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
897	if(RT_FAILURE(rc))
898	return VERR_EM_INTERPRETER;
899
900	if (pDis->param1.size != pDis->param2.size)
901	{
902	AssertMsgReturn(pDis->param1.size >= pDis->param2.size, /* should never happen! */
903	("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->param1.size, pDis->param2.size),
904	VERR_EM_INTERPRETER);
905
906	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
907	pDis->param2.size = pDis->param1.size;
908	param2.size = param1.size;
909	}
910
911	#ifdef IN_RC
912	/* Safety check (in theory it could cross a page boundary and fault there though) */
913	Assert( TRPMHasTrap(pVCpu)
914	&& (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW));
915	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
916	#endif
917
918	/* Register and immediate data == PARMTYPE_IMMEDIATE */
919	AssertReturn(param2.type == PARMTYPE_IMMEDIATE, VERR_EM_INTERPRETER);
920	RTGCUINTREG ValPar2 = param2.val.val64;
921
922	/* The destination is always a virtual address */
923	AssertReturn(param1.type == PARMTYPE_ADDRESS, VERR_EM_INTERPRETER);
924
925	RTGCPTR GCPtrPar1 = param1.val.val64;
926	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, GCPtrPar1);
927	PGMPAGEMAPLOCK Lock;
928	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
929	AssertRCReturn(rc, VERR_EM_INTERPRETER);
930
931	/* Try emulate it with a one-shot #PF handler in place. (RC) */
932	Log2(("%s %RGv imm%d=%RX64\n", emGetMnemonic(pDis), GCPtrPar1, pDis->param2.size*8, ValPar2));
933
934	RTGCUINTREG32 eflags = 0;
935	rc = pfnEmulate(pvParam1, ValPar2, pDis->param2.size, &eflags);
936	PGMPhysReleasePageMappingLock(pVM, &Lock);
937	if (RT_FAILURE(rc))
938	{
939	Log(("%s %RGv imm%d=%RX64-> emulation failed due to page fault!\n", emGetMnemonic(pDis), GCPtrPar1, pDis->param2.size*8, ValPar2));
940	return VERR_EM_INTERPRETER;
941	}
942
943	/* Update guest's eflags and finish. */
944	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
945	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
946
947	*pcbSize = param2.size;
948	return VINF_SUCCESS;
949	}
950
951
952	/**
953	* ADD, ADC & SUB Emulation.
954	*/
955	static int emInterpretAddSub(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
956	PFNEMULATEPARAM3 pfnEmulate)
957	{
958	OP_PARAMVAL param1, param2;
959	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
960	if(RT_FAILURE(rc))
961	return VERR_EM_INTERPRETER;
962
963	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
964	if(RT_FAILURE(rc))
965	return VERR_EM_INTERPRETER;
966
967	#ifdef IN_RC
968	if (TRPMHasTrap(pVCpu))
969	{
970	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
971	{
972	#endif
973	RTGCPTR pParam1;
974	uint64_t valpar1, valpar2;
975
976	if (pDis->param1.size != pDis->param2.size)
977	{
978	if (pDis->param1.size < pDis->param2.size)
979	{
980	AssertMsgFailed(("%s at %RGv parameter mismatch %d vs %d!!\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip, pDis->param1.size, pDis->param2.size)); /* should never happen! */
981	return VERR_EM_INTERPRETER;
982	}
983	/* Or %Ev, Ib -> just a hack to save some space; the data width of the 1st parameter determines the real width */
984	pDis->param2.size = pDis->param1.size;
985	param2.size = param1.size;
986	}
987
988	/* The destination is always a virtual address */
989	if (param1.type == PARMTYPE_ADDRESS)
990	{
991	pParam1 = (RTGCPTR)param1.val.val64;
992	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pParam1);
993	EM_ASSERT_FAULT_RETURN(pParam1 == pvFault, VERR_EM_INTERPRETER);
994	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, param1.size);
995	if (RT_FAILURE(rc))
996	{
997	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
998	return VERR_EM_INTERPRETER;
999	}
1000	}
1001	else
1002	{
1003	#ifndef DEBUG_bird
1004	AssertFailed();
1005	#endif
1006	return VERR_EM_INTERPRETER;
1007	}
1008
1009	/* Register or immediate data */
1010	switch(param2.type)
1011	{
1012	case PARMTYPE_IMMEDIATE: /* both immediate data and register (ugly) */
1013	valpar2 = param2.val.val64;
1014	break;
1015
1016	default:
1017	AssertFailed();
1018	return VERR_EM_INTERPRETER;
1019	}
1020
1021	/* Data read, emulate instruction. */
1022	uint32_t eflags = pfnEmulate(&valpar1, valpar2, param2.size);
1023
1024	/* Update guest's eflags and finish. */
1025	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
1026	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
1027
1028	/* And write it back */
1029	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, param1.size);
1030	if (RT_SUCCESS(rc))
1031	{
1032	/* All done! */
1033	*pcbSize = param2.size;
1034	return VINF_SUCCESS;
1035	}
1036	#ifdef IN_RC
1037	}
1038	}
1039	#endif
1040	return VERR_EM_INTERPRETER;
1041	}
1042
1043
1044	/**
1045	* ADC Emulation.
1046	*/
1047	static int emInterpretAdc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1048	{
1049	if (pRegFrame->eflags.Bits.u1CF)
1050	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdcWithCarrySet);
1051	else
1052	return emInterpretAddSub(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, EMEmulateAdd);
1053	}
1054
1055
1056	/**
1057	* BTR/C/S Emulation.
1058	*/
1059	static int emInterpretBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize,
1060	PFNEMULATEPARAM2UINT32 pfnEmulate)
1061	{
1062	OP_PARAMVAL param1, param2;
1063	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
1064	if(RT_FAILURE(rc))
1065	return VERR_EM_INTERPRETER;
1066
1067	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
1068	if(RT_FAILURE(rc))
1069	return VERR_EM_INTERPRETER;
1070
1071	#ifdef IN_RC
1072	if (TRPMHasTrap(pVCpu))
1073	{
1074	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1075	{
1076	#endif
1077	RTGCPTR pParam1;
1078	uint64_t valpar1 = 0, valpar2;
1079	uint32_t eflags;
1080
1081	/* The destination is always a virtual address */
1082	if (param1.type != PARMTYPE_ADDRESS)
1083	return VERR_EM_INTERPRETER;
1084
1085	pParam1 = (RTGCPTR)param1.val.val64;
1086	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pParam1);
1087
1088	/* Register or immediate data */
1089	switch(param2.type)
1090	{
1091	case PARMTYPE_IMMEDIATE: /* both immediate data and register (ugly) */
1092	valpar2 = param2.val.val64;
1093	break;
1094
1095	default:
1096	AssertFailed();
1097	return VERR_EM_INTERPRETER;
1098	}
1099
1100	Log2(("emInterpret%s: pvFault=%RGv pParam1=%RGv val2=%x\n", emGetMnemonic(pDis), pvFault, pParam1, valpar2));
1101	pParam1 = (RTGCPTR)((RTGCUINTPTR)pParam1 + valpar2/8);
1102	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)pParam1 & ~3) == pvFault, VERR_EM_INTERPRETER);
1103	rc = emRamRead(pVM, pVCpu, pRegFrame, &valpar1, pParam1, 1);
1104	if (RT_FAILURE(rc))
1105	{
1106	AssertMsgFailed(("emRamRead %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
1107	return VERR_EM_INTERPRETER;
1108	}
1109
1110	Log2(("emInterpretBtx: val=%x\n", valpar1));
1111	/* Data read, emulate bit test instruction. */
1112	eflags = pfnEmulate(&valpar1, valpar2 & 0x7);
1113
1114	Log2(("emInterpretBtx: val=%x CF=%d\n", valpar1, !!(eflags & X86_EFL_CF)));
1115
1116	/* Update guest's eflags and finish. */
1117	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
1118	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
1119
1120	/* And write it back */
1121	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &valpar1, 1);
1122	if (RT_SUCCESS(rc))
1123	{
1124	/* All done! */
1125	*pcbSize = 1;
1126	return VINF_SUCCESS;
1127	}
1128	#ifdef IN_RC
1129	}
1130	}
1131	#endif
1132	return VERR_EM_INTERPRETER;
1133	}
1134
1135
1136	/**
1137	* LOCK BTR/C/S Emulation.
1138	*/
1139	static int emInterpretLockBitTest(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
1140	uint32_t *pcbSize, PFNEMULATELOCKPARAM2 pfnEmulate)
1141	{
1142	void *pvParam1;
1143
1144	OP_PARAMVAL param1, param2;
1145	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
1146	if(RT_FAILURE(rc))
1147	return VERR_EM_INTERPRETER;
1148
1149	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
1150	if(RT_FAILURE(rc))
1151	return VERR_EM_INTERPRETER;
1152
1153	/* The destination is always a virtual address */
1154	if (param1.type != PARMTYPE_ADDRESS)
1155	return VERR_EM_INTERPRETER;
1156
1157	/* Register and immediate data == PARMTYPE_IMMEDIATE */
1158	AssertReturn(param2.type == PARMTYPE_IMMEDIATE, VERR_EM_INTERPRETER);
1159	uint64_t ValPar2 = param2.val.val64;
1160
1161	/* Adjust the parameters so what we're dealing with is a bit within the byte pointed to. */
1162	RTGCPTR GCPtrPar1 = param1.val.val64;
1163	GCPtrPar1 = (GCPtrPar1 + ValPar2 / 8);
1164	ValPar2 &= 7;
1165
1166	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, GCPtrPar1);
1167	#ifdef IN_RC
1168	Assert(TRPMHasTrap(pVCpu));
1169	EM_ASSERT_FAULT_RETURN((RTGCPTR)((RTGCUINTPTR)GCPtrPar1 & ~(RTGCUINTPTR)3) == pvFault, VERR_EM_INTERPRETER);
1170	#endif
1171
1172	PGMPAGEMAPLOCK Lock;
1173	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
1174	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1175
1176	Log2(("emInterpretLockBitTest %s: pvFault=%RGv GCPtrPar1=%RGv imm=%RX64\n", emGetMnemonic(pDis), pvFault, GCPtrPar1, ValPar2));
1177
1178	/* Try emulate it with a one-shot #PF handler in place. (RC) */
1179	RTGCUINTREG32 eflags = 0;
1180	rc = pfnEmulate(pvParam1, ValPar2, &eflags);
1181	PGMPhysReleasePageMappingLock(pVM, &Lock);
1182	if (RT_FAILURE(rc))
1183	{
1184	Log(("emInterpretLockBitTest %s: %RGv imm%d=%RX64 -> emulation failed due to page fault!\n",
1185	emGetMnemonic(pDis), GCPtrPar1, pDis->param2.size*8, ValPar2));
1186	return VERR_EM_INTERPRETER;
1187	}
1188
1189	Log2(("emInterpretLockBitTest %s: GCPtrPar1=%RGv imm=%RX64 CF=%d\n", emGetMnemonic(pDis), GCPtrPar1, ValPar2, !!(eflags & X86_EFL_CF)));
1190
1191	/* Update guest's eflags and finish. */
1192	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
1193	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
1194
1195	*pcbSize = 1;
1196	return VINF_SUCCESS;
1197	}
1198
1199
1200	/**
1201	* MOV emulation.
1202	*/
1203	static int emInterpretMov(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1204	{
1205	OP_PARAMVAL param1, param2;
1206	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_DEST);
1207	if(RT_FAILURE(rc))
1208	return VERR_EM_INTERPRETER;
1209
1210	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
1211	if(RT_FAILURE(rc))
1212	return VERR_EM_INTERPRETER;
1213
1214	#ifdef IN_RC
1215	if (TRPMHasTrap(pVCpu))
1216	{
1217	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1218	{
1219	#else
1220	/** @todo Make this the default and don't rely on TRPM information. */
1221	if (param1.type == PARMTYPE_ADDRESS)
1222	{
1223	#endif
1224	RTGCPTR pDest;
1225	uint64_t val64;
1226
1227	switch(param1.type)
1228	{
1229	case PARMTYPE_IMMEDIATE:
1230	if(!(param1.flags & (PARAM_VAL32\|PARAM_VAL64)))
1231	return VERR_EM_INTERPRETER;
1232	/* fallthru */
1233
1234	case PARMTYPE_ADDRESS:
1235	pDest = (RTGCPTR)param1.val.val64;
1236	pDest = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pDest);
1237	break;
1238
1239	default:
1240	AssertFailed();
1241	return VERR_EM_INTERPRETER;
1242	}
1243
1244	switch(param2.type)
1245	{
1246	case PARMTYPE_IMMEDIATE: /* register type is translated to this one too */
1247	val64 = param2.val.val64;
1248	break;
1249
1250	default:
1251	Log(("emInterpretMov: unexpected type=%d rip=%RGv\n", param2.type, (RTGCPTR)pRegFrame->rip));
1252	return VERR_EM_INTERPRETER;
1253	}
1254	#ifdef LOG_ENABLED
1255	if (pDis->mode == CPUMODE_64BIT)
1256	LogFlow(("EMInterpretInstruction at %RGv: OP_MOV %RGv <- %RX64 (%d) &val64=%RHv\n", (RTGCPTR)pRegFrame->rip, pDest, val64, param2.size, &val64));
1257	else
1258	LogFlow(("EMInterpretInstruction at %08RX64: OP_MOV %RGv <- %08X (%d) &val64=%RHv\n", pRegFrame->rip, pDest, (uint32_t)val64, param2.size, &val64));
1259	#endif
1260
1261	Assert(param2.size <= 8 && param2.size > 0);
1262	EM_ASSERT_FAULT_RETURN(pDest == pvFault, VERR_EM_INTERPRETER);
1263	rc = emRamWrite(pVM, pVCpu, pRegFrame, pDest, &val64, param2.size);
1264	if (RT_FAILURE(rc))
1265	return VERR_EM_INTERPRETER;
1266
1267	*pcbSize = param2.size;
1268	}
1269	else
1270	{ /* read fault */
1271	RTGCPTR pSrc;
1272	uint64_t val64;
1273
1274	/* Source */
1275	switch(param2.type)
1276	{
1277	case PARMTYPE_IMMEDIATE:
1278	if(!(param2.flags & (PARAM_VAL32\|PARAM_VAL64)))
1279	return VERR_EM_INTERPRETER;
1280	/* fallthru */
1281
1282	case PARMTYPE_ADDRESS:
1283	pSrc = (RTGCPTR)param2.val.val64;
1284	pSrc = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param2, pSrc);
1285	break;
1286
1287	default:
1288	return VERR_EM_INTERPRETER;
1289	}
1290
1291	Assert(param1.size <= 8 && param1.size > 0);
1292	EM_ASSERT_FAULT_RETURN(pSrc == pvFault, VERR_EM_INTERPRETER);
1293	rc = emRamRead(pVM, pVCpu, pRegFrame, &val64, pSrc, param1.size);
1294	if (RT_FAILURE(rc))
1295	return VERR_EM_INTERPRETER;
1296
1297	/* Destination */
1298	switch(param1.type)
1299	{
1300	case PARMTYPE_REGISTER:
1301	switch(param1.size)
1302	{
1303	case 1: rc = DISWriteReg8(pRegFrame, pDis->param1.base.reg_gen, (uint8_t) val64); break;
1304	case 2: rc = DISWriteReg16(pRegFrame, pDis->param1.base.reg_gen, (uint16_t)val64); break;
1305	case 4: rc = DISWriteReg32(pRegFrame, pDis->param1.base.reg_gen, (uint32_t)val64); break;
1306	case 8: rc = DISWriteReg64(pRegFrame, pDis->param1.base.reg_gen, val64); break;
1307	default:
1308	return VERR_EM_INTERPRETER;
1309	}
1310	if (RT_FAILURE(rc))
1311	return rc;
1312	break;
1313
1314	default:
1315	return VERR_EM_INTERPRETER;
1316	}
1317	#ifdef LOG_ENABLED
1318	if (pDis->mode == CPUMODE_64BIT)
1319	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %RX64 (%d)\n", pSrc, val64, param1.size));
1320	else
1321	LogFlow(("EMInterpretInstruction: OP_MOV %RGv -> %08X (%d)\n", pSrc, (uint32_t)val64, param1.size));
1322	#endif
1323	}
1324	return VINF_SUCCESS;
1325	#ifdef IN_RC
1326	}
1327	#endif
1328	return VERR_EM_INTERPRETER;
1329	}
1330
1331
1332	#ifndef IN_RC
1333	/**
1334	* [REP] STOSWD emulation
1335	*/
1336	static int emInterpretStosWD(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1337	{
1338	int rc;
1339	RTGCPTR GCDest, GCOffset;
1340	uint32_t cbSize;
1341	uint64_t cTransfers;
1342	int offIncrement;
1343
1344	/* Don't support any but these three prefix bytes. */
1345	if ((pDis->prefix & ~(PREFIX_ADDRSIZE\|PREFIX_OPSIZE\|PREFIX_REP\|PREFIX_REX)))
1346	return VERR_EM_INTERPRETER;
1347
1348	switch (pDis->addrmode)
1349	{
1350	case CPUMODE_16BIT:
1351	GCOffset = pRegFrame->di;
1352	cTransfers = pRegFrame->cx;
1353	break;
1354	case CPUMODE_32BIT:
1355	GCOffset = pRegFrame->edi;
1356	cTransfers = pRegFrame->ecx;
1357	break;
1358	case CPUMODE_64BIT:
1359	GCOffset = pRegFrame->rdi;
1360	cTransfers = pRegFrame->rcx;
1361	break;
1362	default:
1363	AssertFailed();
1364	return VERR_EM_INTERPRETER;
1365	}
1366
1367	GCDest = SELMToFlat(pVM, DIS_SELREG_ES, pRegFrame, GCOffset);
1368	switch (pDis->opmode)
1369	{
1370	case CPUMODE_16BIT:
1371	cbSize = 2;
1372	break;
1373	case CPUMODE_32BIT:
1374	cbSize = 4;
1375	break;
1376	case CPUMODE_64BIT:
1377	cbSize = 8;
1378	break;
1379	default:
1380	AssertFailed();
1381	return VERR_EM_INTERPRETER;
1382	}
1383
1384	offIncrement = pRegFrame->eflags.Bits.u1DF ? -(signed)cbSize : (signed)cbSize;
1385
1386	if (!(pDis->prefix & PREFIX_REP))
1387	{
1388	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d\n", pRegFrame->es, GCOffset, GCDest, cbSize));
1389
1390	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
1391	if (RT_FAILURE(rc))
1392	return VERR_EM_INTERPRETER;
1393	Assert(rc == VINF_SUCCESS);
1394
1395	/* Update (e/r)di. */
1396	switch (pDis->addrmode)
1397	{
1398	case CPUMODE_16BIT:
1399	pRegFrame->di += offIncrement;
1400	break;
1401	case CPUMODE_32BIT:
1402	pRegFrame->edi += offIncrement;
1403	break;
1404	case CPUMODE_64BIT:
1405	pRegFrame->rdi += offIncrement;
1406	break;
1407	default:
1408	AssertFailed();
1409	return VERR_EM_INTERPRETER;
1410	}
1411
1412	}
1413	else
1414	{
1415	if (!cTransfers)
1416	return VINF_SUCCESS;
1417
1418	/*
1419	* Do not try emulate cross page stuff here because we don't know what might
1420	* be waiting for us on the subsequent pages. The caller has only asked us to
1421	* ignore access handlers fro the current page.
1422	* This also fends off big stores which would quickly kill PGMR0DynMap.
1423	*/
1424	if ( cbSize > PAGE_SIZE
1425	\|\| cTransfers > PAGE_SIZE
1426	\|\| (GCDest >> PAGE_SHIFT) != ((GCDest + offIncrement * cTransfers) >> PAGE_SHIFT))
1427	{
1428	Log(("STOSWD is crosses pages, chicken out to the recompiler; GCDest=%RGv cbSize=%#x offIncrement=%d cTransfers=%#x\n",
1429	GCDest, cbSize, offIncrement, cTransfers));
1430	return VERR_EM_INTERPRETER;
1431	}
1432
1433	LogFlow(("emInterpretStosWD dest=%04X:%RGv (%RGv) cbSize=%d cTransfers=%x DF=%d\n", pRegFrame->es, GCOffset, GCDest, cbSize, cTransfers, pRegFrame->eflags.Bits.u1DF));
1434	/* Access verification first; we currently can't recover properly from traps inside this instruction */
1435	rc = PGMVerifyAccess(pVCpu, GCDest - ((offIncrement > 0) ? 0 : ((cTransfers-1) * cbSize)),
1436	cTransfers * cbSize,
1437	X86_PTE_RW \| (CPUMGetGuestCPL(pVCpu, pRegFrame) == 3 ? X86_PTE_US : 0));
1438	if (rc != VINF_SUCCESS)
1439	{
1440	Log(("STOSWD will generate a trap -> recompiler, rc=%d\n", rc));
1441	return VERR_EM_INTERPRETER;
1442	}
1443
1444	/* REP case */
1445	while (cTransfers)
1446	{
1447	rc = emRamWrite(pVM, pVCpu, pRegFrame, GCDest, &pRegFrame->rax, cbSize);
1448	if (RT_FAILURE(rc))
1449	{
1450	rc = VERR_EM_INTERPRETER;
1451	break;
1452	}
1453
1454	Assert(rc == VINF_SUCCESS);
1455	GCOffset += offIncrement;
1456	GCDest += offIncrement;
1457	cTransfers--;
1458	}
1459
1460	/* Update the registers. */
1461	switch (pDis->addrmode)
1462	{
1463	case CPUMODE_16BIT:
1464	pRegFrame->di = GCOffset;
1465	pRegFrame->cx = cTransfers;
1466	break;
1467	case CPUMODE_32BIT:
1468	pRegFrame->edi = GCOffset;
1469	pRegFrame->ecx = cTransfers;
1470	break;
1471	case CPUMODE_64BIT:
1472	pRegFrame->rdi = GCOffset;
1473	pRegFrame->rcx = cTransfers;
1474	break;
1475	default:
1476	AssertFailed();
1477	return VERR_EM_INTERPRETER;
1478	}
1479	}
1480
1481	*pcbSize = cbSize;
1482	return rc;
1483	}
1484	#endif /* !IN_RC */
1485
1486
1487	/**
1488	* [LOCK] CMPXCHG emulation.
1489	*/
1490	static int emInterpretCmpXchg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1491	{
1492	OP_PARAMVAL param1, param2;
1493
1494	#if HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL_IN_R0)
1495	Assert(pDis->param1.size <= 4);
1496	#endif
1497
1498	/* Source to make DISQueryParamVal read the register value - ugly hack */
1499	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
1500	if(RT_FAILURE(rc))
1501	return VERR_EM_INTERPRETER;
1502
1503	rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param2, &param2, PARAM_SOURCE);
1504	if(RT_FAILURE(rc))
1505	return VERR_EM_INTERPRETER;
1506
1507	uint64_t valpar;
1508	switch(param2.type)
1509	{
1510	case PARMTYPE_IMMEDIATE: /* register actually */
1511	valpar = param2.val.val64;
1512	break;
1513
1514	default:
1515	return VERR_EM_INTERPRETER;
1516	}
1517
1518	PGMPAGEMAPLOCK Lock;
1519	RTGCPTR GCPtrPar1;
1520	void *pvParam1;
1521	uint64_t eflags;
1522
1523	AssertReturn(pDis->param1.size == pDis->param2.size, VERR_EM_INTERPRETER);
1524	switch(param1.type)
1525	{
1526	case PARMTYPE_ADDRESS:
1527	GCPtrPar1 = param1.val.val64;
1528	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, GCPtrPar1);
1529
1530	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
1531	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1532	break;
1533
1534	default:
1535	return VERR_EM_INTERPRETER;
1536	}
1537
1538	LogFlow(("%s %RGv rax=%RX64 %RX64\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar));
1539
1540	if (pDis->prefix & PREFIX_LOCK)
1541	eflags = EMEmulateLockCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->param2.size);
1542	else
1543	eflags = EMEmulateCmpXchg(pvParam1, &pRegFrame->rax, valpar, pDis->param2.size);
1544
1545	LogFlow(("%s %RGv rax=%RX64 %RX64 ZF=%d\n", emGetMnemonic(pDis), GCPtrPar1, pRegFrame->rax, valpar, !!(eflags & X86_EFL_ZF)));
1546
1547	/* Update guest's eflags and finish. */
1548	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
1549	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
1550
1551	*pcbSize = param2.size;
1552	PGMPhysReleasePageMappingLock(pVM, &Lock);
1553	return VINF_SUCCESS;
1554	}
1555
1556
1557	/**
1558	* [LOCK] CMPXCHG8B emulation.
1559	*/
1560	static int emInterpretCmpXchg8b(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1561	{
1562	Assert(pDis->mode != CPUMODE_64BIT); /** @todo check */
1563	OP_PARAMVAL param1;
1564
1565	/* Source to make DISQueryParamVal read the register value - ugly hack */
1566	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
1567	if(RT_FAILURE(rc))
1568	return VERR_EM_INTERPRETER;
1569
1570	RTGCPTR GCPtrPar1;
1571	void *pvParam1;
1572	uint64_t eflags;
1573	PGMPAGEMAPLOCK Lock;
1574
1575	AssertReturn(pDis->param1.size == 8, VERR_EM_INTERPRETER);
1576	switch(param1.type)
1577	{
1578	case PARMTYPE_ADDRESS:
1579	GCPtrPar1 = param1.val.val64;
1580	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, GCPtrPar1);
1581
1582	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
1583	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1584	break;
1585
1586	default:
1587	return VERR_EM_INTERPRETER;
1588	}
1589
1590	LogFlow(("%s %RGv=%08x eax=%08x\n", emGetMnemonic(pDis), pvParam1, pRegFrame->eax));
1591
1592	if (pDis->prefix & PREFIX_LOCK)
1593	eflags = EMEmulateLockCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
1594	else
1595	eflags = EMEmulateCmpXchg8b(pvParam1, &pRegFrame->eax, &pRegFrame->edx, pRegFrame->ebx, pRegFrame->ecx);
1596
1597	LogFlow(("%s %RGv=%08x eax=%08x ZF=%d\n", emGetMnemonic(pDis), pvParam1, pRegFrame->eax, !!(eflags & X86_EFL_ZF)));
1598
1599	/* Update guest's eflags and finish; note that only ZF is affected. */
1600	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_ZF))
1601	\| (eflags & (X86_EFL_ZF));
1602
1603	*pcbSize = 8;
1604	PGMPhysReleasePageMappingLock(pVM, &Lock);
1605	return VINF_SUCCESS;
1606	}
1607
1608
1609	#ifdef IN_RC /** @todo test+enable for HWACCM as well. */
1610	/**
1611	* [LOCK] XADD emulation.
1612	*/
1613	static int emInterpretXAdd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1614	{
1615	Assert(pDis->mode != CPUMODE_64BIT); /** @todo check */
1616	OP_PARAMVAL param1;
1617	void *pvParamReg2;
1618	size_t cbParamReg2;
1619
1620	/* Source to make DISQueryParamVal read the register value - ugly hack */
1621	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
1622	if(RT_FAILURE(rc))
1623	return VERR_EM_INTERPRETER;
1624
1625	rc = DISQueryParamRegPtr(pRegFrame, pDis, &pDis->param2, &pvParamReg2, &cbParamReg2);
1626	Assert(cbParamReg2 <= 4);
1627	if(RT_FAILURE(rc))
1628	return VERR_EM_INTERPRETER;
1629
1630	#ifdef IN_RC
1631	if (TRPMHasTrap(pVCpu))
1632	{
1633	if (TRPMGetErrorCode(pVCpu) & X86_TRAP_PF_RW)
1634	{
1635	#endif
1636	RTGCPTR GCPtrPar1;
1637	void *pvParam1;
1638	uint32_t eflags;
1639	PGMPAGEMAPLOCK Lock;
1640
1641	AssertReturn(pDis->param1.size == pDis->param2.size, VERR_EM_INTERPRETER);
1642	switch(param1.type)
1643	{
1644	case PARMTYPE_ADDRESS:
1645	GCPtrPar1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, (RTRCUINTPTR)param1.val.val64);
1646	#ifdef IN_RC
1647	EM_ASSERT_FAULT_RETURN(GCPtrPar1 == pvFault, VERR_EM_INTERPRETER);
1648	#endif
1649
1650	rc = PGMPhysGCPtr2CCPtr(pVCpu, GCPtrPar1, &pvParam1, &Lock);
1651	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1652	break;
1653
1654	default:
1655	return VERR_EM_INTERPRETER;
1656	}
1657
1658	LogFlow(("XAdd %RGv=%p reg=%08llx\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2));
1659
1660	if (pDis->prefix & PREFIX_LOCK)
1661	eflags = EMEmulateLockXAdd(pvParam1, pvParamReg2, cbParamReg2);
1662	else
1663	eflags = EMEmulateXAdd(pvParam1, pvParamReg2, cbParamReg2);
1664
1665	LogFlow(("XAdd %RGv=%p reg=%08llx ZF=%d\n", GCPtrPar1, pvParam1, (uint64_t )pvParamReg2, !!(eflags & X86_EFL_ZF) ));
1666
1667	/* Update guest's eflags and finish. */
1668	pRegFrame->eflags.u32 = (pRegFrame->eflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF))
1669	\| (eflags & (X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_ZF \| X86_EFL_SF \| X86_EFL_OF));
1670
1671	*pcbSize = cbParamReg2;
1672	PGMPhysReleasePageMappingLock(pVM, &Lock);
1673	return VINF_SUCCESS;
1674	#ifdef IN_RC
1675	}
1676	}
1677
1678	return VERR_EM_INTERPRETER;
1679	#endif
1680	}
1681	#endif /* IN_RC */
1682
1683
1684	#ifdef IN_RC
1685	/**
1686	* Interpret IRET (currently only to V86 code)
1687	*
1688	* @returns VBox status code.
1689	* @param pVM The VM handle.
1690	* @param pVCpu The VMCPU handle.
1691	* @param pRegFrame The register frame.
1692	*
1693	*/
1694	VMMDECL(int) EMInterpretIret(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1695	{
1696	RTGCUINTPTR pIretStack = (RTGCUINTPTR)pRegFrame->esp;
1697	RTGCUINTPTR eip, cs, esp, ss, eflags, ds, es, fs, gs, uMask;
1698	int rc;
1699
1700	Assert(!CPUMIsGuestIn64BitCode(pVCpu, pRegFrame));
1701
1702	rc = emRamRead(pVM, pVCpu, pRegFrame, &eip, (RTGCPTR)pIretStack , 4);
1703	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &cs, (RTGCPTR)(pIretStack + 4), 4);
1704	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &eflags, (RTGCPTR)(pIretStack + 8), 4);
1705	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1706	AssertReturn(eflags & X86_EFL_VM, VERR_EM_INTERPRETER);
1707
1708	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &esp, (RTGCPTR)(pIretStack + 12), 4);
1709	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &ss, (RTGCPTR)(pIretStack + 16), 4);
1710	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &es, (RTGCPTR)(pIretStack + 20), 4);
1711	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &ds, (RTGCPTR)(pIretStack + 24), 4);
1712	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &fs, (RTGCPTR)(pIretStack + 28), 4);
1713	rc \|= emRamRead(pVM, pVCpu, pRegFrame, &gs, (RTGCPTR)(pIretStack + 32), 4);
1714	AssertRCReturn(rc, VERR_EM_INTERPRETER);
1715
1716	pRegFrame->eip = eip & 0xffff;
1717	pRegFrame->cs = cs;
1718
1719	/* Mask away all reserved bits */
1720	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;
1721	eflags &= uMask;
1722
1723	#ifndef IN_RING0
1724	CPUMRawSetEFlags(pVCpu, pRegFrame, eflags);
1725	#endif
1726	Assert((pRegFrame->eflags.u32 & (X86_EFL_IF\|X86_EFL_IOPL)) == X86_EFL_IF);
1727
1728	pRegFrame->esp = esp;
1729	pRegFrame->ss = ss;
1730	pRegFrame->ds = ds;
1731	pRegFrame->es = es;
1732	pRegFrame->fs = fs;
1733	pRegFrame->gs = gs;
1734
1735	return VINF_SUCCESS;
1736	}
1737	#endif /* IN_RC */
1738
1739
1740	/**
1741	* IRET Emulation.
1742	*/
1743	static int emInterpretIret(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1744	{
1745	/* only allow direct calls to EMInterpretIret for now */
1746	return VERR_EM_INTERPRETER;
1747	}
1748
1749	/**
1750	* WBINVD Emulation.
1751	*/
1752	static int emInterpretWbInvd(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1753	{
1754	/* Nothing to do. */
1755	return VINF_SUCCESS;
1756	}
1757
1758
1759	/**
1760	* Interpret INVLPG
1761	*
1762	* @returns VBox status code.
1763	* @param pVM The VM handle.
1764	* @param pVCpu The VMCPU handle.
1765	* @param pRegFrame The register frame.
1766	* @param pAddrGC Operand address
1767	*
1768	*/
1769	VMMDECL(VBOXSTRICTRC) EMInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, RTGCPTR pAddrGC)
1770	{
1771	/** @todo is addr always a flat linear address or ds based
1772	* (in absence of segment override prefixes)????
1773	*/
1774	#ifdef IN_RC
1775	LogFlow(("RC: EMULATE: invlpg %RGv\n", pAddrGC));
1776	#endif
1777	VBOXSTRICTRC rc = PGMInvalidatePage(pVCpu, pAddrGC);
1778	if ( rc == VINF_SUCCESS
1779	\|\| rc == VINF_PGM_SYNC_CR3 /* we can rely on the FF */)
1780	return VINF_SUCCESS;
1781	AssertMsgReturn(rc == VINF_EM_RAW_EMULATE_INSTR,
1782	("%Rrc addr=%RGv\n", VBOXSTRICTRC_VAL(rc), pAddrGC),
1783	VERR_EM_INTERPRETER);
1784	return rc;
1785	}
1786
1787
1788	/**
1789	* INVLPG Emulation.
1790	*/
1791	static VBOXSTRICTRC emInterpretInvlPg(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1792	{
1793	OP_PARAMVAL param1;
1794	RTGCPTR addr;
1795
1796	VBOXSTRICTRC rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
1797	if(RT_FAILURE(rc))
1798	return VERR_EM_INTERPRETER;
1799
1800	switch(param1.type)
1801	{
1802	case PARMTYPE_IMMEDIATE:
1803	case PARMTYPE_ADDRESS:
1804	if(!(param1.flags & (PARAM_VAL32\|PARAM_VAL64)))
1805	return VERR_EM_INTERPRETER;
1806	addr = (RTGCPTR)param1.val.val64;
1807	break;
1808
1809	default:
1810	return VERR_EM_INTERPRETER;
1811	}
1812
1813	/** @todo is addr always a flat linear address or ds based
1814	* (in absence of segment override prefixes)????
1815	*/
1816	#ifdef IN_RC
1817	LogFlow(("RC: EMULATE: invlpg %RGv\n", addr));
1818	#endif
1819	rc = PGMInvalidatePage(pVCpu, addr);
1820	if ( rc == VINF_SUCCESS
1821	\|\| rc == VINF_PGM_SYNC_CR3 /* we can rely on the FF */)
1822	return VINF_SUCCESS;
1823	AssertMsgReturn(rc == VINF_EM_RAW_EMULATE_INSTR,
1824	("%Rrc addr=%RGv\n", VBOXSTRICTRC_VAL(rc), addr),
1825	VERR_EM_INTERPRETER);
1826	return rc;
1827	}
1828
1829	/** @todo change all these EMInterpretXXX methods to VBOXSTRICTRC. */
1830
1831	/**
1832	* Interpret CPUID given the parameters in the CPU context
1833	*
1834	* @returns VBox status code.
1835	* @param pVM The VM handle.
1836	* @param pVCpu The VMCPU handle.
1837	* @param pRegFrame The register frame.
1838	*
1839	*/
1840	VMMDECL(int) EMInterpretCpuId(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
1841	{
1842	uint32_t iLeaf = pRegFrame->eax;
1843
1844	/* cpuid clears the high dwords of the affected 64 bits registers. */
1845	pRegFrame->rax = 0;
1846	pRegFrame->rbx = 0;
1847	pRegFrame->rcx &= UINT64_C(0x00000000ffffffff);
1848	pRegFrame->rdx = 0;
1849
1850	/* Note: operates the same in 64 and non-64 bits mode. */
1851	CPUMGetGuestCpuId(pVCpu, iLeaf, &pRegFrame->eax, &pRegFrame->ebx, &pRegFrame->ecx, &pRegFrame->edx);
1852	Log(("Emulate: CPUID %x -> %08x %08x %08x %08x\n", iLeaf, pRegFrame->eax, pRegFrame->ebx, pRegFrame->ecx, pRegFrame->edx));
1853	return VINF_SUCCESS;
1854	}
1855
1856
1857	/**
1858	* CPUID Emulation.
1859	*/
1860	static int emInterpretCpuId(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1861	{
1862	int rc = EMInterpretCpuId(pVM, pVCpu, pRegFrame);
1863	return rc;
1864	}
1865
1866
1867	/**
1868	* Interpret CRx read
1869	*
1870	* @returns VBox status code.
1871	* @param pVM The VM handle.
1872	* @param pVCpu The VMCPU handle.
1873	* @param pRegFrame The register frame.
1874	* @param DestRegGen General purpose register index (USE_REG_E**))
1875	* @param SrcRegCRx CRx register index (USE_REG_CR*)
1876	*
1877	*/
1878	VMMDECL(int) EMInterpretCRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegCrx)
1879	{
1880	uint64_t val64;
1881	int rc = CPUMGetGuestCRx(pVCpu, SrcRegCrx, &val64);
1882	AssertMsgRCReturn(rc, ("CPUMGetGuestCRx %d failed\n", SrcRegCrx), VERR_EM_INTERPRETER);
1883
1884	if (CPUMIsGuestIn64BitCode(pVCpu, pRegFrame))
1885	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
1886	else
1887	rc = DISWriteReg32(pRegFrame, DestRegGen, val64);
1888
1889	if (RT_SUCCESS(rc))
1890	{
1891	LogFlow(("MOV_CR: gen32=%d CR=%d val=%RX64\n", DestRegGen, SrcRegCrx, val64));
1892	return VINF_SUCCESS;
1893	}
1894	return VERR_EM_INTERPRETER;
1895	}
1896
1897
1898
1899	/**
1900	* Interpret CLTS
1901	*
1902	* @returns VBox status code.
1903	* @param pVM The VM handle.
1904	* @param pVCpu The VMCPU handle.
1905	*
1906	*/
1907	VMMDECL(int) EMInterpretCLTS(PVM pVM, PVMCPU pVCpu)
1908	{
1909	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
1910	if (!(cr0 & X86_CR0_TS))
1911	return VINF_SUCCESS;
1912	return CPUMSetGuestCR0(pVCpu, cr0 & ~X86_CR0_TS);
1913	}
1914
1915	/**
1916	* CLTS Emulation.
1917	*/
1918	static int emInterpretClts(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
1919	{
1920	return EMInterpretCLTS(pVM, pVCpu);
1921	}
1922
1923
1924	/**
1925	* Update CRx
1926	*
1927	* @returns VBox status code.
1928	* @param pVM The VM handle.
1929	* @param pVCpu The VMCPU handle.
1930	* @param pRegFrame The register frame.
1931	* @param DestRegCRx CRx register index (USE_REG_CR*)
1932	* @param val New CRx value
1933	*
1934	*/
1935	static int emUpdateCRx(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint64_t val)
1936	{
1937	uint64_t oldval;
1938	uint64_t msrEFER;
1939	int rc, rc2;
1940
1941	/** @todo Clean up this mess. */
1942	LogFlow(("EMInterpretCRxWrite at %RGv CR%d <- %RX64\n", (RTGCPTR)pRegFrame->rip, DestRegCrx, val));
1943	switch (DestRegCrx)
1944	{
1945	case USE_REG_CR0:
1946	oldval = CPUMGetGuestCR0(pVCpu);
1947	#ifdef IN_RC
1948	/* CR0.WP and CR0.AM changes require a reschedule run in ring 3. */
1949	if ( (val & (X86_CR0_WP \| X86_CR0_AM))
1950	!= (oldval & (X86_CR0_WP \| X86_CR0_AM)))
1951	return VERR_EM_INTERPRETER;
1952	#endif
1953	rc = VINF_SUCCESS;
1954	CPUMSetGuestCR0(pVCpu, val);
1955	val = CPUMGetGuestCR0(pVCpu);
1956	if ( (oldval & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE))
1957	!= (val & (X86_CR0_PG \| X86_CR0_WP \| X86_CR0_PE)))
1958	{
1959	/* global flush */
1960	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
1961	AssertRCReturn(rc, rc);
1962	}
1963
1964	/* Deal with long mode enabling/disabling. */
1965	msrEFER = CPUMGetGuestEFER(pVCpu);
1966	if (msrEFER & MSR_K6_EFER_LME)
1967	{
1968	if ( !(oldval & X86_CR0_PG)
1969	&& (val & X86_CR0_PG))
1970	{
1971	/* Illegal to have an active 64 bits CS selector (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
1972	if (pRegFrame->csHid.Attr.n.u1Long)
1973	{
1974	AssertMsgFailed(("Illegal enabling of paging with CS.u1Long = 1!!\n"));
1975	return VERR_EM_INTERPRETER; /* @todo generate #GP(0) */
1976	}
1977
1978	/* Illegal to switch to long mode before activating PAE first (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
1979	if (!(CPUMGetGuestCR4(pVCpu) & X86_CR4_PAE))
1980	{
1981	AssertMsgFailed(("Illegal enabling of paging with PAE disabled!!\n"));
1982	return VERR_EM_INTERPRETER; /* @todo generate #GP(0) */
1983	}
1984	msrEFER \|= MSR_K6_EFER_LMA;
1985	}
1986	else
1987	if ( (oldval & X86_CR0_PG)
1988	&& !(val & X86_CR0_PG))
1989	{
1990	msrEFER &= ~MSR_K6_EFER_LMA;
1991	/* @todo Do we need to cut off rip here? High dword of rip is undefined, so it shouldn't really matter. */
1992	}
1993	CPUMSetGuestEFER(pVCpu, msrEFER);
1994	}
1995	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
1996	return rc2 == VINF_SUCCESS ? rc : rc2;
1997
1998	case USE_REG_CR2:
1999	rc = CPUMSetGuestCR2(pVCpu, val); AssertRC(rc);
2000	return VINF_SUCCESS;
2001
2002	case USE_REG_CR3:
2003	/* Reloading the current CR3 means the guest just wants to flush the TLBs */
2004	rc = CPUMSetGuestCR3(pVCpu, val); AssertRC(rc);
2005	if (CPUMGetGuestCR0(pVCpu) & X86_CR0_PG)
2006	{
2007	/* flush */
2008	rc = PGMFlushTLB(pVCpu, val, !(CPUMGetGuestCR4(pVCpu) & X86_CR4_PGE));
2009	AssertRC(rc);
2010	}
2011	return rc;
2012
2013	case USE_REG_CR4:
2014	oldval = CPUMGetGuestCR4(pVCpu);
2015	rc = CPUMSetGuestCR4(pVCpu, val); AssertRC(rc);
2016	val = CPUMGetGuestCR4(pVCpu);
2017
2018	/* Illegal to disable PAE when long mode is active. (AMD Arch. Programmer's Manual Volume 2: Table 14-5) */
2019	msrEFER = CPUMGetGuestEFER(pVCpu);
2020	if ( (msrEFER & MSR_K6_EFER_LMA)
2021	&& (oldval & X86_CR4_PAE)
2022	&& !(val & X86_CR4_PAE))
2023	{
2024	return VERR_EM_INTERPRETER; /** @todo generate #GP(0) */
2025	}
2026
2027	rc = VINF_SUCCESS;
2028	if ( (oldval & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE))
2029	!= (val & (X86_CR4_PGE\|X86_CR4_PAE\|X86_CR4_PSE)))
2030	{
2031	/* global flush */
2032	rc = PGMFlushTLB(pVCpu, CPUMGetGuestCR3(pVCpu), true /* global */);
2033	AssertRCReturn(rc, rc);
2034	}
2035
2036	/* Feeling extremely lazy. */
2037	# ifdef IN_RC
2038	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))
2039	!= (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)))
2040	{
2041	Log(("emInterpretMovCRx: CR4: %#RX64->%#RX64 => R3\n", oldval, val));
2042	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
2043	}
2044	# endif
2045	if ((val ^ oldval) & X86_CR4_VME)
2046	VMCPU_FF_SET(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
2047
2048	rc2 = PGMChangeMode(pVCpu, CPUMGetGuestCR0(pVCpu), CPUMGetGuestCR4(pVCpu), CPUMGetGuestEFER(pVCpu));
2049	return rc2 == VINF_SUCCESS ? rc : rc2;
2050
2051	case USE_REG_CR8:
2052	return PDMApicSetTPR(pVCpu, val << 4); /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */
2053
2054	default:
2055	AssertFailed();
2056	case USE_REG_CR1: /* illegal op */
2057	break;
2058	}
2059	return VERR_EM_INTERPRETER;
2060	}
2061
2062	/**
2063	* Interpret CRx write
2064	*
2065	* @returns VBox status code.
2066	* @param pVM The VM handle.
2067	* @param pVCpu The VMCPU handle.
2068	* @param pRegFrame The register frame.
2069	* @param DestRegCRx CRx register index (USE_REG_CR*)
2070	* @param SrcRegGen General purpose register index (USE_REG_E**))
2071	*
2072	*/
2073	VMMDECL(int) EMInterpretCRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegCrx, uint32_t SrcRegGen)
2074	{
2075	uint64_t val;
2076	int rc;
2077
2078	if (CPUMIsGuestIn64BitCode(pVCpu, pRegFrame))
2079	{
2080	rc = DISFetchReg64(pRegFrame, SrcRegGen, &val);
2081	}
2082	else
2083	{
2084	uint32_t val32;
2085	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
2086	val = val32;
2087	}
2088
2089	if (RT_SUCCESS(rc))
2090	return emUpdateCRx(pVM, pVCpu, pRegFrame, DestRegCrx, val);
2091
2092	return VERR_EM_INTERPRETER;
2093	}
2094
2095	/**
2096	* Interpret LMSW
2097	*
2098	* @returns VBox status code.
2099	* @param pVM The VM handle.
2100	* @param pVCpu The VMCPU handle.
2101	* @param pRegFrame The register frame.
2102	* @param u16Data LMSW source data.
2103	*
2104	*/
2105	VMMDECL(int) EMInterpretLMSW(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint16_t u16Data)
2106	{
2107	uint64_t OldCr0 = CPUMGetGuestCR0(pVCpu);
2108
2109	/* Only PE, MP, EM and TS can be changed; note that PE can't be cleared by this instruction. */
2110	uint64_t NewCr0 = ( OldCr0 & ~( X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS))
2111	\| (u16Data & (X86_CR0_PE \| X86_CR0_MP \| X86_CR0_EM \| X86_CR0_TS));
2112
2113	return emUpdateCRx(pVM, pVCpu, pRegFrame, USE_REG_CR0, NewCr0);
2114	}
2115
2116	/**
2117	* LMSW Emulation.
2118	*/
2119	static int emInterpretLmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2120	{
2121	OP_PARAMVAL param1;
2122	uint32_t val;
2123
2124	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
2125	if(RT_FAILURE(rc))
2126	return VERR_EM_INTERPRETER;
2127
2128	switch(param1.type)
2129	{
2130	case PARMTYPE_IMMEDIATE:
2131	case PARMTYPE_ADDRESS:
2132	if(!(param1.flags & PARAM_VAL16))
2133	return VERR_EM_INTERPRETER;
2134	val = param1.val.val32;
2135	break;
2136
2137	default:
2138	return VERR_EM_INTERPRETER;
2139	}
2140
2141	LogFlow(("emInterpretLmsw %x\n", val));
2142	return EMInterpretLMSW(pVM, pVCpu, pRegFrame, val);
2143	}
2144
2145	#ifdef EM_EMULATE_SMSW
2146	/**
2147	* SMSW Emulation.
2148	*/
2149	static int emInterpretSmsw(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2150	{
2151	OP_PARAMVAL param1;
2152	uint64_t cr0 = CPUMGetGuestCR0(pVCpu);
2153
2154	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
2155	if(RT_FAILURE(rc))
2156	return VERR_EM_INTERPRETER;
2157
2158	switch(param1.type)
2159	{
2160	case PARMTYPE_IMMEDIATE:
2161	if(param1.size != sizeof(uint16_t))
2162	return VERR_EM_INTERPRETER;
2163	LogFlow(("emInterpretSmsw %d <- cr0 (%x)\n", pDis->param1.base.reg_gen, cr0));
2164	rc = DISWriteReg16(pRegFrame, pDis->param1.base.reg_gen, cr0);
2165	break;
2166
2167	case PARMTYPE_ADDRESS:
2168	{
2169	RTGCPTR pParam1;
2170
2171	/* Actually forced to 16 bits regardless of the operand size. */
2172	if(param1.size != sizeof(uint16_t))
2173	return VERR_EM_INTERPRETER;
2174
2175	pParam1 = (RTGCPTR)param1.val.val64;
2176	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, pParam1);
2177	LogFlow(("emInterpretSmsw %RGv <- cr0 (%x)\n", pParam1, cr0));
2178
2179	rc = emRamWrite(pVM, pVCpu, pRegFrame, pParam1, &cr0, sizeof(uint16_t));
2180	if (RT_FAILURE(rc))
2181	{
2182	AssertMsgFailed(("emRamWrite %RGv size=%d failed with %Rrc\n", pParam1, param1.size, rc));
2183	return VERR_EM_INTERPRETER;
2184	}
2185	break;
2186	}
2187
2188	default:
2189	return VERR_EM_INTERPRETER;
2190	}
2191
2192	LogFlow(("emInterpretSmsw %x\n", cr0));
2193	return rc;
2194	}
2195	#endif
2196
2197	/**
2198	* MOV CRx
2199	*/
2200	static int emInterpretMovCRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2201	{
2202	if ((pDis->param1.flags == USE_REG_GEN32 \|\| pDis->param1.flags == USE_REG_GEN64) && pDis->param2.flags == USE_REG_CR)
2203	return EMInterpretCRxRead(pVM, pVCpu, pRegFrame, pDis->param1.base.reg_gen, pDis->param2.base.reg_ctrl);
2204
2205	if (pDis->param1.flags == USE_REG_CR && (pDis->param2.flags == USE_REG_GEN32 \|\| pDis->param2.flags == USE_REG_GEN64))
2206	return EMInterpretCRxWrite(pVM, pVCpu, pRegFrame, pDis->param1.base.reg_ctrl, pDis->param2.base.reg_gen);
2207
2208	AssertMsgFailedReturn(("Unexpected control register move\n"), VERR_EM_INTERPRETER);
2209	return VERR_EM_INTERPRETER;
2210	}
2211
2212
2213	/**
2214	* Interpret DRx write
2215	*
2216	* @returns VBox status code.
2217	* @param pVM The VM handle.
2218	* @param pVCpu The VMCPU handle.
2219	* @param pRegFrame The register frame.
2220	* @param DestRegDRx DRx register index (USE_REG_DR*)
2221	* @param SrcRegGen General purpose register index (USE_REG_E**))
2222	*
2223	*/
2224	VMMDECL(int) EMInterpretDRxWrite(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegDrx, uint32_t SrcRegGen)
2225	{
2226	uint64_t val;
2227	int rc;
2228
2229	if (CPUMIsGuestIn64BitCode(pVCpu, pRegFrame))
2230	{
2231	rc = DISFetchReg64(pRegFrame, SrcRegGen, &val);
2232	}
2233	else
2234	{
2235	uint32_t val32;
2236	rc = DISFetchReg32(pRegFrame, SrcRegGen, &val32);
2237	val = val32;
2238	}
2239
2240	if (RT_SUCCESS(rc))
2241	{
2242	/** @todo we don't fail if illegal bits are set/cleared for e.g. dr7 */
2243	rc = CPUMSetGuestDRx(pVCpu, DestRegDrx, val);
2244	if (RT_SUCCESS(rc))
2245	return rc;
2246	AssertMsgFailed(("CPUMSetGuestDRx %d failed\n", DestRegDrx));
2247	}
2248	return VERR_EM_INTERPRETER;
2249	}
2250
2251
2252	/**
2253	* Interpret DRx read
2254	*
2255	* @returns VBox status code.
2256	* @param pVM The VM handle.
2257	* @param pVCpu The VMCPU handle.
2258	* @param pRegFrame The register frame.
2259	* @param DestRegGen General purpose register index (USE_REG_E**))
2260	* @param SrcRegDRx DRx register index (USE_REG_DR*)
2261	*
2262	*/
2263	VMMDECL(int) EMInterpretDRxRead(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t DestRegGen, uint32_t SrcRegDrx)
2264	{
2265	uint64_t val64;
2266
2267	int rc = CPUMGetGuestDRx(pVCpu, SrcRegDrx, &val64);
2268	AssertMsgRCReturn(rc, ("CPUMGetGuestDRx %d failed\n", SrcRegDrx), VERR_EM_INTERPRETER);
2269	if (CPUMIsGuestIn64BitCode(pVCpu, pRegFrame))
2270	{
2271	rc = DISWriteReg64(pRegFrame, DestRegGen, val64);
2272	}
2273	else
2274	rc = DISWriteReg32(pRegFrame, DestRegGen, (uint32_t)val64);
2275
2276	if (RT_SUCCESS(rc))
2277	return VINF_SUCCESS;
2278
2279	return VERR_EM_INTERPRETER;
2280	}
2281
2282
2283	/**
2284	* MOV DRx
2285	*/
2286	static int emInterpretMovDRx(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2287	{
2288	int rc = VERR_EM_INTERPRETER;
2289
2290	if((pDis->param1.flags == USE_REG_GEN32 \|\| pDis->param1.flags == USE_REG_GEN64) && pDis->param2.flags == USE_REG_DBG)
2291	{
2292	rc = EMInterpretDRxRead(pVM, pVCpu, pRegFrame, pDis->param1.base.reg_gen, pDis->param2.base.reg_dbg);
2293	}
2294	else
2295	if(pDis->param1.flags == USE_REG_DBG && (pDis->param2.flags == USE_REG_GEN32 \|\| pDis->param2.flags == USE_REG_GEN64))
2296	{
2297	rc = EMInterpretDRxWrite(pVM, pVCpu, pRegFrame, pDis->param1.base.reg_dbg, pDis->param2.base.reg_gen);
2298	}
2299	else
2300	AssertMsgFailed(("Unexpected debug register move\n"));
2301
2302	return rc;
2303	}
2304
2305
2306	/**
2307	* LLDT Emulation.
2308	*/
2309	static int emInterpretLLdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2310	{
2311	OP_PARAMVAL param1;
2312	RTSEL sel;
2313
2314	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
2315	if(RT_FAILURE(rc))
2316	return VERR_EM_INTERPRETER;
2317
2318	switch(param1.type)
2319	{
2320	case PARMTYPE_ADDRESS:
2321	return VERR_EM_INTERPRETER; //feeling lazy right now
2322
2323	case PARMTYPE_IMMEDIATE:
2324	if(!(param1.flags & PARAM_VAL16))
2325	return VERR_EM_INTERPRETER;
2326	sel = (RTSEL)param1.val.val16;
2327	break;
2328
2329	default:
2330	return VERR_EM_INTERPRETER;
2331	}
2332
2333	#ifdef IN_RING0
2334	/* Only for the VT-x real-mode emulation case. */
2335	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
2336	CPUMSetGuestLDTR(pVCpu, sel);
2337	return VINF_SUCCESS;
2338	#else
2339	if (sel == 0)
2340	{
2341	if (CPUMGetHyperLDTR(pVCpu) == 0)
2342	{
2343	// this simple case is most frequent in Windows 2000 (31k - boot & shutdown)
2344	return VINF_SUCCESS;
2345	}
2346	}
2347	//still feeling lazy
2348	return VERR_EM_INTERPRETER;
2349	#endif
2350	}
2351
2352	#ifdef IN_RING0
2353	/**
2354	* LIDT/LGDT Emulation.
2355	*/
2356	static int emInterpretLIGdt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2357	{
2358	OP_PARAMVAL param1;
2359	RTGCPTR pParam1;
2360	X86XDTR32 dtr32;
2361
2362	Log(("Emulate %s at %RGv\n", emGetMnemonic(pDis), (RTGCPTR)pRegFrame->rip));
2363
2364	/* Only for the VT-x real-mode emulation case. */
2365	AssertReturn(CPUMIsGuestInRealMode(pVCpu), VERR_EM_INTERPRETER);
2366
2367	int rc = DISQueryParamVal(pRegFrame, pDis, &pDis->param1, &param1, PARAM_SOURCE);
2368	if(RT_FAILURE(rc))
2369	return VERR_EM_INTERPRETER;
2370
2371	switch(param1.type)
2372	{
2373	case PARMTYPE_ADDRESS:
2374	pParam1 = emConvertToFlatAddr(pVM, pRegFrame, pDis, &pDis->param1, param1.val.val16);
2375	break;
2376
2377	default:
2378	return VERR_EM_INTERPRETER;
2379	}
2380
2381	rc = emRamRead(pVM, pVCpu, pRegFrame, &dtr32, pParam1, sizeof(dtr32));
2382	AssertRCReturn(rc, VERR_EM_INTERPRETER);
2383
2384	if (!(pDis->prefix & PREFIX_OPSIZE))
2385	dtr32.uAddr &= 0xffffff; /* 16 bits operand size */
2386
2387	if (pDis->pCurInstr->opcode == OP_LIDT)
2388	CPUMSetGuestIDTR(pVCpu, dtr32.uAddr, dtr32.cb);
2389	else
2390	CPUMSetGuestGDTR(pVCpu, dtr32.uAddr, dtr32.cb);
2391
2392	return VINF_SUCCESS;
2393	}
2394	#endif
2395
2396
2397	#ifdef IN_RC
2398	/**
2399	* STI Emulation.
2400	*
2401	* @remark the instruction following sti is guaranteed to be executed before any interrupts are dispatched
2402	*/
2403	static int emInterpretSti(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2404	{
2405	PPATMGCSTATE pGCState = PATMQueryGCState(pVM);
2406
2407	if(!pGCState)
2408	{
2409	Assert(pGCState);
2410	return VERR_EM_INTERPRETER;
2411	}
2412	pGCState->uVMFlags \|= X86_EFL_IF;
2413
2414	Assert(pRegFrame->eflags.u32 & X86_EFL_IF);
2415	Assert(pvFault == SELMToFlat(pVM, DIS_SELREG_CS, pRegFrame, (RTGCPTR)pRegFrame->rip));
2416
2417	pVCpu->em.s.GCPtrInhibitInterrupts = pRegFrame->eip + pDis->opsize;
2418	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
2419
2420	return VINF_SUCCESS;
2421	}
2422	#endif /* IN_RC */
2423
2424
2425	/**
2426	* HLT Emulation.
2427	*/
2428	static VBOXSTRICTRC
2429	emInterpretHlt(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2430	{
2431	return VINF_EM_HALT;
2432	}
2433
2434
2435	/**
2436	* Interpret RDTSC
2437	*
2438	* @returns VBox status code.
2439	* @param pVM The VM handle.
2440	* @param pVCpu The VMCPU handle.
2441	* @param pRegFrame The register frame.
2442	*
2443	*/
2444	VMMDECL(int) EMInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
2445	{
2446	unsigned uCR4 = CPUMGetGuestCR4(pVCpu);
2447
2448	if (uCR4 & X86_CR4_TSD)
2449	return VERR_EM_INTERPRETER; /* genuine #GP */
2450
2451	uint64_t uTicks = TMCpuTickGet(pVCpu);
2452
2453	/* Same behaviour in 32 & 64 bits mode */
2454	pRegFrame->rax = (uint32_t)uTicks;
2455	pRegFrame->rdx = (uTicks >> 32ULL);
2456
2457	return VINF_SUCCESS;
2458	}
2459
2460	/**
2461	* Interpret RDTSCP
2462	*
2463	* @returns VBox status code.
2464	* @param pVM The VM handle.
2465	* @param pVCpu The VMCPU handle.
2466	* @param pCtx The CPU context.
2467	*
2468	*/
2469	VMMDECL(int) EMInterpretRdtscp(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2470	{
2471	unsigned uCR4 = CPUMGetGuestCR4(pVCpu);
2472
2473	if (!CPUMGetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_RDTSCP))
2474	{
2475	AssertFailed();
2476	return VERR_EM_INTERPRETER; /* genuine #UD */
2477	}
2478
2479	if (uCR4 & X86_CR4_TSD)
2480	return VERR_EM_INTERPRETER; /* genuine #GP */
2481
2482	uint64_t uTicks = TMCpuTickGet(pVCpu);
2483
2484	/* Same behaviour in 32 & 64 bits mode */
2485	pCtx->rax = (uint32_t)uTicks;
2486	pCtx->rdx = (uTicks >> 32ULL);
2487	/* Low dword of the TSC_AUX msr only. */
2488	CPUMQueryGuestMsr(pVCpu, MSR_K8_TSC_AUX, &pCtx->rcx);
2489	pCtx->rcx &= UINT32_C(0xffffffff);
2490
2491	return VINF_SUCCESS;
2492	}
2493
2494	/**
2495	* RDTSC Emulation.
2496	*/
2497	static int emInterpretRdtsc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2498	{
2499	return EMInterpretRdtsc(pVM, pVCpu, pRegFrame);
2500	}
2501
2502	/**
2503	* Interpret RDPMC
2504	*
2505	* @returns VBox status code.
2506	* @param pVM The VM handle.
2507	* @param pVCpu The VMCPU handle.
2508	* @param pRegFrame The register frame.
2509	*
2510	*/
2511	VMMDECL(int) EMInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
2512	{
2513	unsigned uCR4 = CPUMGetGuestCR4(pVCpu);
2514
2515	/* If X86_CR4_PCE is not set, then CPL must be zero. */
2516	if ( !(uCR4 & X86_CR4_PCE)
2517	&& CPUMGetGuestCPL(pVCpu, pRegFrame) != 0)
2518	{
2519	Assert(CPUMGetGuestCR0(pVCpu) & X86_CR0_PE);
2520	return VERR_EM_INTERPRETER; /* genuine #GP */
2521	}
2522
2523	/* Just return zero here; rather tricky to properly emulate this, especially as the specs are a mess. */
2524	pRegFrame->rax = 0;
2525	pRegFrame->rdx = 0;
2526	/** @todo We should trigger a #GP here if the cpu doesn't support the index in ecx. */
2527	return VINF_SUCCESS;
2528	}
2529
2530	/**
2531	* RDPMC Emulation
2532	*/
2533	static int emInterpretRdpmc(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2534	{
2535	return EMInterpretRdpmc(pVM, pVCpu, pRegFrame);
2536	}
2537
2538	/**
2539	* MONITOR Emulation.
2540	*/
2541	VMMDECL(int) EMInterpretMonitor(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
2542	{
2543	uint32_t u32Dummy, u32ExtFeatures, cpl;
2544
2545	if (pRegFrame->ecx != 0)
2546	{
2547	Log(("emInterpretMonitor: unexpected ecx=%x -> recompiler!!\n", pRegFrame->ecx));
2548	return VERR_EM_INTERPRETER; /* illegal value. */
2549	}
2550
2551	/* Get the current privilege level. */
2552	cpl = CPUMGetGuestCPL(pVCpu, pRegFrame);
2553	if (cpl != 0)
2554	return VERR_EM_INTERPRETER; /* supervisor only */
2555
2556	CPUMGetGuestCpuId(pVCpu, 1, &u32Dummy, &u32Dummy, &u32ExtFeatures, &u32Dummy);
2557	if (!(u32ExtFeatures & X86_CPUID_FEATURE_ECX_MONITOR))
2558	return VERR_EM_INTERPRETER; /* not supported */
2559
2560	pVCpu->em.s.mwait.uMonitorEAX = pRegFrame->rax;
2561	pVCpu->em.s.mwait.uMonitorECX = pRegFrame->rcx;
2562	pVCpu->em.s.mwait.uMonitorEDX = pRegFrame->rdx;
2563	pVCpu->em.s.mwait.fWait \|= EMMWAIT_FLAG_MONITOR_ACTIVE;
2564	return VINF_SUCCESS;
2565	}
2566
2567	static int emInterpretMonitor(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2568	{
2569	return EMInterpretMonitor(pVM, pVCpu, pRegFrame);
2570	}
2571
2572
2573	/**
2574	* MWAIT Emulation.
2575	*/
2576	VMMDECL(VBOXSTRICTRC) EMInterpretMWait(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
2577	{
2578	uint32_t u32Dummy, u32ExtFeatures, cpl, u32MWaitFeatures;
2579
2580	/* Get the current privilege level. */
2581	cpl = CPUMGetGuestCPL(pVCpu, pRegFrame);
2582	if (cpl != 0)
2583	return VERR_EM_INTERPRETER; /* supervisor only */
2584
2585	CPUMGetGuestCpuId(pVCpu, 1, &u32Dummy, &u32Dummy, &u32ExtFeatures, &u32Dummy);
2586	if (!(u32ExtFeatures & X86_CPUID_FEATURE_ECX_MONITOR))
2587	return VERR_EM_INTERPRETER; /* not supported */
2588
2589	/*
2590	* CPUID.05H.ECX[0] defines support for power management extensions (eax)
2591	* CPUID.05H.ECX[1] defines support for interrupts as break events for mwait even when IF=0
2592	*/
2593	CPUMGetGuestCpuId(pVCpu, 5, &u32Dummy, &u32Dummy, &u32MWaitFeatures, &u32Dummy);
2594	if (pRegFrame->ecx > 1)
2595	{
2596	Log(("EMInterpretMWait: unexpected ecx value %x -> recompiler\n", pRegFrame->ecx));
2597	return VERR_EM_INTERPRETER; /* illegal value. */
2598	}
2599
2600	if (pRegFrame->ecx)
2601	{
2602	if (!(u32MWaitFeatures & X86_CPUID_MWAIT_ECX_BREAKIRQIF0))
2603	{
2604	Log(("EMInterpretMWait: unsupported X86_CPUID_MWAIT_ECX_BREAKIRQIF0 -> recompiler\n"));
2605	return VERR_EM_INTERPRETER; /* illegal value. */
2606	}
2607
2608	pVCpu->em.s.mwait.fWait = EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0;
2609	}
2610	else
2611	pVCpu->em.s.mwait.fWait = EMMWAIT_FLAG_ACTIVE;
2612
2613	pVCpu->em.s.mwait.uMWaitEAX = pRegFrame->rax;
2614	pVCpu->em.s.mwait.uMWaitECX = pRegFrame->rcx;
2615
2616	/** @todo not completely correct */
2617	return VINF_EM_HALT;
2618	}
2619
2620	static VBOXSTRICTRC emInterpretMWait(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2621	{
2622	return EMInterpretMWait(pVM, pVCpu, pRegFrame);
2623	}
2624
2625
2626	#ifdef LOG_ENABLED
2627	static const char *emMSRtoString(uint32_t uMsr)
2628	{
2629	switch (uMsr)
2630	{
2631	case MSR_IA32_APICBASE:
2632	return "MSR_IA32_APICBASE";
2633	case MSR_IA32_CR_PAT:
2634	return "MSR_IA32_CR_PAT";
2635	case MSR_IA32_SYSENTER_CS:
2636	return "MSR_IA32_SYSENTER_CS";
2637	case MSR_IA32_SYSENTER_EIP:
2638	return "MSR_IA32_SYSENTER_EIP";
2639	case MSR_IA32_SYSENTER_ESP:
2640	return "MSR_IA32_SYSENTER_ESP";
2641	case MSR_K6_EFER:
2642	return "MSR_K6_EFER";
2643	case MSR_K8_SF_MASK:
2644	return "MSR_K8_SF_MASK";
2645	case MSR_K6_STAR:
2646	return "MSR_K6_STAR";
2647	case MSR_K8_LSTAR:
2648	return "MSR_K8_LSTAR";
2649	case MSR_K8_CSTAR:
2650	return "MSR_K8_CSTAR";
2651	case MSR_K8_FS_BASE:
2652	return "MSR_K8_FS_BASE";
2653	case MSR_K8_GS_BASE:
2654	return "MSR_K8_GS_BASE";
2655	case MSR_K8_KERNEL_GS_BASE:
2656	return "MSR_K8_KERNEL_GS_BASE";
2657	case MSR_K8_TSC_AUX:
2658	return "MSR_K8_TSC_AUX";
2659	case MSR_IA32_BIOS_SIGN_ID:
2660	return "Unsupported MSR_IA32_BIOS_SIGN_ID";
2661	case MSR_IA32_PLATFORM_ID:
2662	return "Unsupported MSR_IA32_PLATFORM_ID";
2663	case MSR_IA32_BIOS_UPDT_TRIG:
2664	return "Unsupported MSR_IA32_BIOS_UPDT_TRIG";
2665	case MSR_IA32_TSC:
2666	return "MSR_IA32_TSC";
2667	case MSR_IA32_MISC_ENABLE:
2668	return "Unsupported MSR_IA32_MISC_ENABLE";
2669	case MSR_IA32_MTRR_CAP:
2670	return "Unsupported MSR_IA32_MTRR_CAP";
2671	case MSR_IA32_MCP_CAP:
2672	return "Unsupported MSR_IA32_MCP_CAP";
2673	case MSR_IA32_MCP_STATUS:
2674	return "Unsupported MSR_IA32_MCP_STATUS";
2675	case MSR_IA32_MCP_CTRL:
2676	return "Unsupported MSR_IA32_MCP_CTRL";
2677	case MSR_IA32_MTRR_DEF_TYPE:
2678	return "Unsupported MSR_IA32_MTRR_DEF_TYPE";
2679	case MSR_K7_EVNTSEL0:
2680	return "Unsupported MSR_K7_EVNTSEL0";
2681	case MSR_K7_EVNTSEL1:
2682	return "Unsupported MSR_K7_EVNTSEL1";
2683	case MSR_K7_EVNTSEL2:
2684	return "Unsupported MSR_K7_EVNTSEL2";
2685	case MSR_K7_EVNTSEL3:
2686	return "Unsupported MSR_K7_EVNTSEL3";
2687	case MSR_IA32_MC0_CTL:
2688	return "Unsupported MSR_IA32_MC0_CTL";
2689	case MSR_IA32_MC0_STATUS:
2690	return "Unsupported MSR_IA32_MC0_STATUS";
2691	case MSR_IA32_PERFEVTSEL0:
2692	return "Unsupported MSR_IA32_PERFEVTSEL0";
2693	case MSR_IA32_PERFEVTSEL1:
2694	return "Unsupported MSR_IA32_PERFEVTSEL1";
2695	case MSR_IA32_PERF_STATUS:
2696	return "MSR_IA32_PERF_STATUS";
2697	case MSR_IA32_PLATFORM_INFO:
2698	return "MSR_IA32_PLATFORM_INFO";
2699	case MSR_IA32_PERF_CTL:
2700	return "Unsupported MSR_IA32_PERF_CTL";
2701	case MSR_K7_PERFCTR0:
2702	return "Unsupported MSR_K7_PERFCTR0";
2703	case MSR_K7_PERFCTR1:
2704	return "Unsupported MSR_K7_PERFCTR1";
2705	case MSR_K7_PERFCTR2:
2706	return "Unsupported MSR_K7_PERFCTR2";
2707	case MSR_K7_PERFCTR3:
2708	return "Unsupported MSR_K7_PERFCTR3";
2709	case MSR_IA32_PMC0:
2710	return "Unsupported MSR_IA32_PMC0";
2711	case MSR_IA32_PMC1:
2712	return "Unsupported MSR_IA32_PMC1";
2713	case MSR_IA32_PMC2:
2714	return "Unsupported MSR_IA32_PMC2";
2715	case MSR_IA32_PMC3:
2716	return "Unsupported MSR_IA32_PMC3";
2717	}
2718	return "Unknown MSR";
2719	}
2720	#endif /* LOG_ENABLED */
2721
2722
2723	/**
2724	* Interpret RDMSR
2725	*
2726	* @returns VBox status code.
2727	* @param pVM The VM handle.
2728	* @param pVCpu The VMCPU handle.
2729	* @param pRegFrame The register frame.
2730	*/
2731	VMMDECL(int) EMInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
2732	{
2733	/** @todo According to the Intel manuals, there's a REX version of RDMSR that is slightly different.
2734	* That version clears the high dwords of both RDX & RAX */
2735
2736	/* Get the current privilege level. */
2737	if (CPUMGetGuestCPL(pVCpu, pRegFrame) != 0)
2738	return VERR_EM_INTERPRETER; /* supervisor only */
2739
2740	uint64_t uValue;
2741	int rc = CPUMQueryGuestMsr(pVCpu, pRegFrame->ecx, &uValue);
2742	if (RT_UNLIKELY(rc != VINF_SUCCESS))
2743	{
2744	Assert(rc == VERR_CPUM_RAISE_GP_0);
2745	return VERR_EM_INTERPRETER;
2746	}
2747	pRegFrame->rax = (uint32_t) uValue;
2748	pRegFrame->rdx = (uint32_t)(uValue >> 32);
2749	LogFlow(("EMInterpretRdmsr %s (%x) -> %RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx, uValue));
2750	return rc;
2751	}
2752
2753
2754	/**
2755	* RDMSR Emulation.
2756	*/
2757	static int emInterpretRdmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2758	{
2759	/* Note: The Intel manual claims there's a REX version of RDMSR that's slightly
2760	different, so we play safe by completely disassembling the instruction. */
2761	Assert(!(pDis->prefix & PREFIX_REX));
2762	return EMInterpretRdmsr(pVM, pVCpu, pRegFrame);
2763	}
2764
2765
2766	/**
2767	* Interpret WRMSR
2768	*
2769	* @returns VBox status code.
2770	* @param pVM The VM handle.
2771	* @param pVCpu The VMCPU handle.
2772	* @param pRegFrame The register frame.
2773	*/
2774	VMMDECL(int) EMInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
2775	{
2776	/* Check the current privilege level, this instruction is supervisor only. */
2777	if (CPUMGetGuestCPL(pVCpu, pRegFrame) != 0)
2778	return VERR_EM_INTERPRETER; /** @todo raise \#GP(0) */
2779
2780	int rc = CPUMSetGuestMsr(pVCpu, pRegFrame->ecx, RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx));
2781	if (rc != VINF_SUCCESS)
2782	{
2783	Assert(rc == VERR_CPUM_RAISE_GP_0);
2784	return VERR_EM_INTERPRETER;
2785	}
2786	LogFlow(("EMInterpretWrmsr %s (%x) val=%RX64\n", emMSRtoString(pRegFrame->ecx), pRegFrame->ecx,
2787	RT_MAKE_U64(pRegFrame->eax, pRegFrame->edx)));
2788	return rc;
2789	}
2790
2791
2792	/**
2793	* WRMSR Emulation.
2794	*/
2795	static int emInterpretWrmsr(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, uint32_t *pcbSize)
2796	{
2797	return EMInterpretWrmsr(pVM, pVCpu, pRegFrame);
2798	}
2799
2800
2801	/**
2802	* Internal worker.
2803	* @copydoc EMInterpretInstructionCPU
2804	*/
2805	DECLINLINE(VBOXSTRICTRC) emInterpretInstructionCPU(PVM pVM, PVMCPU pVCpu, PDISCPUSTATE pDis, PCPUMCTXCORE pRegFrame,
2806	RTGCPTR pvFault, EMCODETYPE enmCodeType, uint32_t *pcbSize)
2807	{
2808	Assert(enmCodeType == EMCODETYPE_SUPERVISOR \|\| enmCodeType == EMCODETYPE_ALL);
2809	Assert(pcbSize);
2810	*pcbSize = 0;
2811
2812	if (enmCodeType == EMCODETYPE_SUPERVISOR)
2813	{
2814	/*
2815	* Only supervisor guest code!!
2816	* And no complicated prefixes.
2817	*/
2818	/* Get the current privilege level. */
2819	uint32_t cpl = CPUMGetGuestCPL(pVCpu, pRegFrame);
2820	if ( cpl != 0
2821	&& pDis->pCurInstr->opcode != OP_RDTSC) /* rdtsc requires emulation in ring 3 as well */
2822	{
2823	Log(("WARNING: refusing instruction emulation for user-mode code!!\n"));
2824	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedUserMode));
2825	return VERR_EM_INTERPRETER;
2826	}
2827	}
2828	else
2829	Log2(("emInterpretInstructionCPU allowed to interpret user-level code!!\n"));
2830
2831	#ifdef IN_RC
2832	if ( (pDis->prefix & (PREFIX_REPNE \| PREFIX_REP))
2833	\|\| ( (pDis->prefix & PREFIX_LOCK)
2834	&& pDis->pCurInstr->opcode != OP_CMPXCHG
2835	&& pDis->pCurInstr->opcode != OP_CMPXCHG8B
2836	&& pDis->pCurInstr->opcode != OP_XADD
2837	&& pDis->pCurInstr->opcode != OP_OR
2838	&& pDis->pCurInstr->opcode != OP_AND
2839	&& pDis->pCurInstr->opcode != OP_XOR
2840	&& pDis->pCurInstr->opcode != OP_BTR
2841	)
2842	)
2843	#else
2844	if ( (pDis->prefix & PREFIX_REPNE)
2845	\|\| ( (pDis->prefix & PREFIX_REP)
2846	&& pDis->pCurInstr->opcode != OP_STOSWD
2847	)
2848	\|\| ( (pDis->prefix & PREFIX_LOCK)
2849	&& pDis->pCurInstr->opcode != OP_OR
2850	&& pDis->pCurInstr->opcode != OP_AND
2851	&& pDis->pCurInstr->opcode != OP_XOR
2852	&& pDis->pCurInstr->opcode != OP_BTR
2853	&& pDis->pCurInstr->opcode != OP_CMPXCHG
2854	&& pDis->pCurInstr->opcode != OP_CMPXCHG8B
2855	)
2856	)
2857	#endif
2858	{
2859	//Log(("EMInterpretInstruction: wrong prefix!!\n"));
2860	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedPrefix));
2861	return VERR_EM_INTERPRETER;
2862	}
2863
2864	#if HC_ARCH_BITS == 32
2865	/*
2866	* Unable to emulate most >4 bytes accesses in 32 bits mode.
2867	* Whitelisted instructions are safe.
2868	*/
2869	if ( pDis->param1.size > 4
2870	&& CPUMIsGuestIn64BitCode(pVCpu, pRegFrame))
2871	{
2872	uint32_t uOpCode = pDis->pCurInstr->opcode;
2873	if ( uOpCode != OP_STOSWD
2874	&& uOpCode != OP_MOV
2875	&& uOpCode != OP_CMPXCHG8B
2876	&& uOpCode != OP_XCHG
2877	&& uOpCode != OP_BTS
2878	&& uOpCode != OP_BTR
2879	&& uOpCode != OP_BTC
2880	# ifdef VBOX_WITH_HYBRID_32BIT_KERNEL_IN_R0
2881	&& uOpCode != OP_CMPXCHG /* solaris */
2882	&& uOpCode != OP_AND /* windows */
2883	&& uOpCode != OP_OR /* windows */
2884	&& uOpCode != OP_XOR /* because we can */
2885	&& uOpCode != OP_ADD /* windows (dripple) */
2886	&& uOpCode != OP_ADC /* because we can */
2887	&& uOpCode != OP_SUB /* because we can */
2888	/** @todo OP_BTS or is that a different kind of failure? */
2889	# endif
2890	)
2891	{
2892	# ifdef VBOX_WITH_STATISTICS
2893	switch (pDis->pCurInstr->opcode)
2894	{
2895	# define INTERPRET_FAILED_CASE(opcode, Instr) \
2896	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); break;
2897	INTERPRET_FAILED_CASE(OP_XCHG,Xchg);
2898	INTERPRET_FAILED_CASE(OP_DEC,Dec);
2899	INTERPRET_FAILED_CASE(OP_INC,Inc);
2900	INTERPRET_FAILED_CASE(OP_POP,Pop);
2901	INTERPRET_FAILED_CASE(OP_OR, Or);
2902	INTERPRET_FAILED_CASE(OP_XOR,Xor);
2903	INTERPRET_FAILED_CASE(OP_AND,And);
2904	INTERPRET_FAILED_CASE(OP_MOV,Mov);
2905	INTERPRET_FAILED_CASE(OP_STOSWD,StosWD);
2906	INTERPRET_FAILED_CASE(OP_INVLPG,InvlPg);
2907	INTERPRET_FAILED_CASE(OP_CPUID,CpuId);
2908	INTERPRET_FAILED_CASE(OP_MOV_CR,MovCRx);
2909	INTERPRET_FAILED_CASE(OP_MOV_DR,MovDRx);
2910	INTERPRET_FAILED_CASE(OP_LLDT,LLdt);
2911	INTERPRET_FAILED_CASE(OP_LIDT,LIdt);
2912	INTERPRET_FAILED_CASE(OP_LGDT,LGdt);
2913	INTERPRET_FAILED_CASE(OP_LMSW,Lmsw);
2914	INTERPRET_FAILED_CASE(OP_CLTS,Clts);
2915	INTERPRET_FAILED_CASE(OP_MONITOR,Monitor);
2916	INTERPRET_FAILED_CASE(OP_MWAIT,MWait);
2917	INTERPRET_FAILED_CASE(OP_RDMSR,Rdmsr);
2918	INTERPRET_FAILED_CASE(OP_WRMSR,Wrmsr);
2919	INTERPRET_FAILED_CASE(OP_ADD,Add);
2920	INTERPRET_FAILED_CASE(OP_SUB,Sub);
2921	INTERPRET_FAILED_CASE(OP_ADC,Adc);
2922	INTERPRET_FAILED_CASE(OP_BTR,Btr);
2923	INTERPRET_FAILED_CASE(OP_BTS,Bts);
2924	INTERPRET_FAILED_CASE(OP_BTC,Btc);
2925	INTERPRET_FAILED_CASE(OP_RDTSC,Rdtsc);
2926	INTERPRET_FAILED_CASE(OP_CMPXCHG, CmpXchg);
2927	INTERPRET_FAILED_CASE(OP_STI, Sti);
2928	INTERPRET_FAILED_CASE(OP_XADD,XAdd);
2929	INTERPRET_FAILED_CASE(OP_CMPXCHG8B,CmpXchg8b);
2930	INTERPRET_FAILED_CASE(OP_HLT, Hlt);
2931	INTERPRET_FAILED_CASE(OP_IRET,Iret);
2932	INTERPRET_FAILED_CASE(OP_WBINVD,WbInvd);
2933	INTERPRET_FAILED_CASE(OP_MOVNTPS,MovNTPS);
2934	# undef INTERPRET_FAILED_CASE
2935	default:
2936	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
2937	break;
2938	}
2939	# endif /* VBOX_WITH_STATISTICS */
2940	return VERR_EM_INTERPRETER;
2941	}
2942	}
2943	#endif
2944
2945	VBOXSTRICTRC rc;
2946	#if (defined(VBOX_STRICT) \|\| defined(LOG_ENABLED))
2947	LogFlow(("emInterpretInstructionCPU %s\n", emGetMnemonic(pDis)));
2948	#endif
2949	switch (pDis->pCurInstr->opcode)
2950	{
2951	/*
2952	* Macros for generating the right case statements.
2953	*/
2954	# define INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
2955	case opcode:\
2956	if (pDis->prefix & PREFIX_LOCK) \
2957	rc = emInterpretLock##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulateLock); \
2958	else \
2959	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
2960	if (RT_SUCCESS(rc)) \
2961	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
2962	else \
2963	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
2964	return rc
2965	#define INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate) \
2966	case opcode:\
2967	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize, pfnEmulate); \
2968	if (RT_SUCCESS(rc)) \
2969	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
2970	else \
2971	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
2972	return rc
2973
2974	#define INTERPRET_CASE_EX_PARAM2(opcode, Instr, InstrFn, pfnEmulate) \
2975	INTERPRET_CASE_EX_PARAM3(opcode, Instr, InstrFn, pfnEmulate)
2976	#define INTERPRET_CASE_EX_LOCK_PARAM2(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock) \
2977	INTERPRET_CASE_EX_LOCK_PARAM3(opcode, Instr, InstrFn, pfnEmulate, pfnEmulateLock)
2978
2979	#define INTERPRET_CASE(opcode, Instr) \
2980	case opcode:\
2981	rc = emInterpret##Instr(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
2982	if (RT_SUCCESS(rc)) \
2983	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
2984	else \
2985	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
2986	return rc
2987
2988	#define INTERPRET_CASE_EX_DUAL_PARAM2(opcode, Instr, InstrFn) \
2989	case opcode:\
2990	rc = emInterpret##InstrFn(pVM, pVCpu, pDis, pRegFrame, pvFault, pcbSize); \
2991	if (RT_SUCCESS(rc)) \
2992	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Instr)); \
2993	else \
2994	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); \
2995	return rc
2996
2997	#define INTERPRET_STAT_CASE(opcode, Instr) \
2998	case opcode: STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,Failed##Instr)); return VERR_EM_INTERPRETER;
2999
3000	/*
3001	* The actual case statements.
3002	*/
3003	INTERPRET_CASE(OP_XCHG,Xchg);
3004	INTERPRET_CASE_EX_PARAM2(OP_DEC,Dec, IncDec, EMEmulateDec);
3005	INTERPRET_CASE_EX_PARAM2(OP_INC,Inc, IncDec, EMEmulateInc);
3006	INTERPRET_CASE(OP_POP,Pop);
3007	INTERPRET_CASE_EX_LOCK_PARAM3(OP_OR, Or, OrXorAnd, EMEmulateOr, EMEmulateLockOr);
3008	INTERPRET_CASE_EX_LOCK_PARAM3(OP_XOR,Xor, OrXorAnd, EMEmulateXor, EMEmulateLockXor);
3009	INTERPRET_CASE_EX_LOCK_PARAM3(OP_AND,And, OrXorAnd, EMEmulateAnd, EMEmulateLockAnd);
3010	INTERPRET_CASE(OP_MOV,Mov);
3011	#ifndef IN_RC
3012	INTERPRET_CASE(OP_STOSWD,StosWD);
3013	#endif
3014	INTERPRET_CASE(OP_INVLPG,InvlPg);
3015	INTERPRET_CASE(OP_CPUID,CpuId);
3016	INTERPRET_CASE(OP_MOV_CR,MovCRx);
3017	INTERPRET_CASE(OP_MOV_DR,MovDRx);
3018	#ifdef IN_RING0
3019	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LIDT, LIdt, LIGdt);
3020	INTERPRET_CASE_EX_DUAL_PARAM2(OP_LGDT, LGdt, LIGdt);
3021	#endif
3022	INTERPRET_CASE(OP_LLDT,LLdt);
3023	INTERPRET_CASE(OP_LMSW,Lmsw);
3024	#ifdef EM_EMULATE_SMSW
3025	INTERPRET_CASE(OP_SMSW,Smsw);
3026	#endif
3027	INTERPRET_CASE(OP_CLTS,Clts);
3028	INTERPRET_CASE(OP_MONITOR, Monitor);
3029	INTERPRET_CASE(OP_MWAIT, MWait);
3030	INTERPRET_CASE(OP_RDMSR, Rdmsr);
3031	INTERPRET_CASE(OP_WRMSR, Wrmsr);
3032	INTERPRET_CASE_EX_PARAM3(OP_ADD,Add, AddSub, EMEmulateAdd);
3033	INTERPRET_CASE_EX_PARAM3(OP_SUB,Sub, AddSub, EMEmulateSub);
3034	INTERPRET_CASE(OP_ADC,Adc);
3035	INTERPRET_CASE_EX_LOCK_PARAM2(OP_BTR,Btr, BitTest, EMEmulateBtr, EMEmulateLockBtr);
3036	INTERPRET_CASE_EX_PARAM2(OP_BTS,Bts, BitTest, EMEmulateBts);
3037	INTERPRET_CASE_EX_PARAM2(OP_BTC,Btc, BitTest, EMEmulateBtc);
3038	INTERPRET_CASE(OP_RDPMC,Rdpmc);
3039	INTERPRET_CASE(OP_RDTSC,Rdtsc);
3040	INTERPRET_CASE(OP_CMPXCHG, CmpXchg);
3041	#ifdef IN_RC
3042	INTERPRET_CASE(OP_STI,Sti);
3043	INTERPRET_CASE(OP_XADD, XAdd);
3044	#endif
3045	INTERPRET_CASE(OP_CMPXCHG8B, CmpXchg8b);
3046	INTERPRET_CASE(OP_HLT,Hlt);
3047	INTERPRET_CASE(OP_IRET,Iret);
3048	INTERPRET_CASE(OP_WBINVD,WbInvd);
3049	#ifdef VBOX_WITH_STATISTICS
3050	# ifndef IN_RC
3051	INTERPRET_STAT_CASE(OP_XADD, XAdd);
3052	# endif
3053	INTERPRET_STAT_CASE(OP_MOVNTPS,MovNTPS);
3054	#endif
3055
3056	default:
3057	Log3(("emInterpretInstructionCPU: opcode=%d\n", pDis->pCurInstr->opcode));
3058	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,FailedMisc));
3059	return VERR_EM_INTERPRETER;
3060
3061	#undef INTERPRET_CASE_EX_PARAM2
3062	#undef INTERPRET_STAT_CASE
3063	#undef INTERPRET_CASE_EX
3064	#undef INTERPRET_CASE
3065	} /* switch (opcode) */
3066	AssertFailed();
3067	return VERR_INTERNAL_ERROR;
3068	}
3069
3070
3071	/**
3072	* Sets the PC for which interrupts should be inhibited.
3073	*
3074	* @param pVCpu The VMCPU handle.
3075	* @param PC The PC.
3076	*/
3077	VMMDECL(void) EMSetInhibitInterruptsPC(PVMCPU pVCpu, RTGCUINTPTR PC)
3078	{
3079	pVCpu->em.s.GCPtrInhibitInterrupts = PC;
3080	VMCPU_FF_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
3081	}
3082
3083
3084	/**
3085	* Gets the PC for which interrupts should be inhibited.
3086	*
3087	* There are a few instructions which inhibits or delays interrupts
3088	* for the instruction following them. These instructions are:
3089	* - STI
3090	* - MOV SS, r/m16
3091	* - POP SS
3092	*
3093	* @returns The PC for which interrupts should be inhibited.
3094	* @param pVCpu The VMCPU handle.
3095	*
3096	*/
3097	VMMDECL(RTGCUINTPTR) EMGetInhibitInterruptsPC(PVMCPU pVCpu)
3098	{
3099	return pVCpu->em.s.GCPtrInhibitInterrupts;
3100	}
3101
3102	/**
3103	* Locks REM execution to a single VCpu
3104	*
3105	* @param pVM VM handle.
3106	*/
3107	VMMDECL(void) EMRemLock(PVM pVM)
3108	{
3109	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
3110	return; /* early init */
3111
3112	Assert(!PGMIsLockOwner(pVM) && !IOMIsLockOwner(pVM));
3113	int rc = PDMCritSectEnter(&pVM->em.s.CritSectREM, VERR_SEM_BUSY);
3114	AssertMsg(rc == VINF_SUCCESS, ("%Rrc\n", rc));
3115	}
3116
3117	/**
3118	* Unlocks REM execution
3119	*
3120	* @param pVM VM handle.
3121	*/
3122	VMMDECL(void) EMRemUnlock(PVM pVM)
3123	{
3124	if (!PDMCritSectIsInitialized(&pVM->em.s.CritSectREM))
3125	return; /* early init */
3126
3127	PDMCritSectLeave(&pVM->em.s.CritSectREM);
3128	}
3129
3130	/**
3131	* Check if this VCPU currently owns the REM lock.
3132	*
3133	* @returns bool owner/not owner
3134	* @param pVM The VM to operate on.
3135	*/
3136	VMMDECL(bool) EMRemIsLockOwner(PVM pVM)
3137	{
3138	return PDMCritSectIsOwner(&pVM->em.s.CritSectREM);
3139	}
3140
3141	/**
3142	* Try to acquire the REM lock.
3143	*
3144	* @returns VBox status code
3145	* @param pVM The VM to operate on.
3146	*/
3147	VMMDECL(int) EMTryEnterRemLock(PVM pVM)
3148	{
3149	return PDMCritSectTryEnter(&pVM->em.s.CritSectREM);
3150	}
3151
3152	/**
3153	* Determine if we should continue after encountering a hlt or mwait instruction
3154	*
3155	* @returns boolean
3156	* @param pVCpu The VMCPU to operate on.
3157	* @param pCtx Current CPU context
3158	*/
3159	VMMDECL(bool) EMShouldContinueAfterHalt(PVMCPU pVCpu, PCPUMCTX pCtx)
3160	{
3161	if ( pCtx->eflags.Bits.u1IF
3162	\|\| ((pVCpu->em.s.mwait.fWait & (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0)) == (EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0)))
3163	{
3164	pVCpu->em.s.mwait.fWait &= ~(EMMWAIT_FLAG_ACTIVE \| EMMWAIT_FLAG_BREAKIRQIF0);
3165	return !!VMCPU_FF_ISPENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC\|VMCPU_FF_INTERRUPT_PIC));
3166	}
3167
3168	return false;
3169	}
3170

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

source: vbox/trunk/src/VBox/VMM/VMMAll/EMAll.cpp@ 31996

Download in other formats: