hmvmxinline.h@ 80537

Last change on this file since 80537 was 80364, checked in by vboxsync, 5 years ago
VMM: Nested VMX: bugref:9180 Move some of the description functions into the inline header. Removed some temporary debugging nits.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 43.4 KB

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1	/** @file
2	* HM - VMX Structures and Definitions. (VMM)
3	*/
4
5	/*
6	* Copyright (C) 2006-2019 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef VBOX_INCLUDED_vmm_hmvmxinline_h
27	#define VBOX_INCLUDED_vmm_hmvmxinline_h
28	#ifndef RT_WITHOUT_PRAGMA_ONCE
29	# pragma once
30	#endif
31
32	#include <VBox/vmm/hm_vmx.h>
33	#include <VBox/err.h>
34
35	/* In Visual C++ versions prior to 2012, the vmx intrinsics are only available
36	when targeting AMD64. */
37	#if RT_INLINE_ASM_USES_INTRIN >= 16 && defined(RT_ARCH_AMD64)
38	# pragma warning(push)
39	# pragma warning(disable:4668) /* Several incorrect __cplusplus uses. */
40	# pragma warning(disable:4255) /* Incorrect __slwpcb prototype. */
41	# include <intrin.h>
42	# pragma warning(pop)
43	/* We always want them as intrinsics, no functions. */
44	# pragma intrinsic(__vmx_on)
45	# pragma intrinsic(__vmx_off)
46	# pragma intrinsic(__vmx_vmclear)
47	# pragma intrinsic(__vmx_vmptrld)
48	# pragma intrinsic(__vmx_vmread)
49	# pragma intrinsic(__vmx_vmwrite)
50	# define VMX_USE_MSC_INTRINSICS 1
51	#else
52	# define VMX_USE_MSC_INTRINSICS 0
53	#endif
54
55	/* Skip checking VMREAD/VMWRITE failures on non-strict builds. */
56	#ifndef VBOX_STRICT
57	# define VBOX_WITH_VMREAD_VMWRITE_NOCHECK
58	#endif
59
60
61	/** @defgroup grp_hm_vmx_inline VMX Inline Helpers
62	* @ingroup grp_hm_vmx
63	* @{
64	*/
65	/**
66	* Gets the effective width of a VMCS field given it's encoding adjusted for
67	* HIGH/FULL access for 64-bit fields.
68	*
69	* @returns The effective VMCS field width.
70	* @param uFieldEnc The VMCS field encoding.
71	*
72	* @remarks Warning! This function does not verify the encoding is for a valid and
73	* supported VMCS field.
74	*/
75	DECLINLINE(uint8_t) VMXGetVmcsFieldWidthEff(uint32_t uFieldEnc)
76	{
77	/* Only the "HIGH" parts of all 64-bit fields have bit 0 set. */
78	if (uFieldEnc & RT_BIT(0))
79	return VMXVMCSFIELDWIDTH_32BIT;
80
81	/* Bits 13:14 contains the width of the VMCS field, see VMXVMCSFIELDWIDTH_XXX. */
82	return (uFieldEnc >> 13) & 0x3;
83	}
84
85
86	/**
87	* Returns whether the given VMCS field is a read-only VMCS field or not.
88	*
89	* @returns @c true if it's a read-only field, @c false otherwise.
90	* @param uFieldEnc The VMCS field encoding.
91	*
92	* @remarks Warning! This function does not verify that the encoding is for a valid
93	* and/or supported VMCS field.
94	*/
95	DECLINLINE(bool) VMXIsVmcsFieldReadOnly(uint32_t uFieldEnc)
96	{
97	/* See Intel spec. B.4.2 "Natural-Width Read-Only Data Fields". */
98	return (RT_BF_GET(uFieldEnc, VMX_BF_VMCSFIELD_TYPE) == VMXVMCSFIELDTYPE_VMEXIT_INFO);
99	}
100
101
102	/**
103	* Returns whether the given VM-entry interruption-information type is valid or not.
104	*
105	* @returns @c true if it's a valid type, @c false otherwise.
106	* @param fSupportsMTF Whether the Monitor-Trap Flag CPU feature is supported.
107	* @param uType The VM-entry interruption-information type.
108	*/
109	DECLINLINE(bool) VMXIsEntryIntInfoTypeValid(bool fSupportsMTF, uint8_t uType)
110	{
111	/* See Intel spec. 26.2.1.3 "VM-Entry Control Fields". */
112	switch (uType)
113	{
114	case VMX_ENTRY_INT_INFO_TYPE_EXT_INT:
115	case VMX_ENTRY_INT_INFO_TYPE_NMI:
116	case VMX_ENTRY_INT_INFO_TYPE_HW_XCPT:
117	case VMX_ENTRY_INT_INFO_TYPE_SW_INT:
118	case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT:
119	case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT: return true;
120	case VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT: return fSupportsMTF;
121	default:
122	return false;
123	}
124	}
125
126
127	/**
128	* Returns whether the given VM-entry interruption-information vector and type
129	* combination is valid or not.
130	*
131	* @returns @c true if it's a valid vector/type combination, @c false otherwise.
132	* @param uVector The VM-entry interruption-information vector.
133	* @param uType The VM-entry interruption-information type.
134	*
135	* @remarks Warning! This function does not validate the type field individually.
136	* Use it after verifying type is valid using HMVmxIsEntryIntInfoTypeValid.
137	*/
138	DECLINLINE(bool) VMXIsEntryIntInfoVectorValid(uint8_t uVector, uint8_t uType)
139	{
140	/* See Intel spec. 26.2.1.3 "VM-Entry Control Fields". */
141	if ( uType == VMX_ENTRY_INT_INFO_TYPE_NMI
142	&& uVector != X86_XCPT_NMI)
143	return false;
144	if ( uType == VMX_ENTRY_INT_INFO_TYPE_HW_XCPT
145	&& uVector > X86_XCPT_LAST)
146	return false;
147	if ( uType == VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT
148	&& uVector != VMX_ENTRY_INT_INFO_VECTOR_MTF)
149	return false;
150	return true;
151	}
152
153
154	/**
155	* Returns whether or not the VM-exit is trap-like or fault-like.
156	*
157	* @returns @c true if it's a trap-like VM-exit, @c false otherwise.
158	* @param uExitReason The VM-exit reason.
159	*
160	* @remarks Warning! This does not validate the VM-exit reason.
161	*/
162	DECLINLINE(bool) VMXIsVmexitTrapLike(uint32_t uExitReason)
163	{
164	/*
165	* Trap-like VM-exits - The instruction causing the VM-exit completes before the
166	* VM-exit occurs.
167	*
168	* Fault-like VM-exits - The instruction causing the VM-exit is not completed before
169	* the VM-exit occurs.
170	*
171	* See Intel spec. 25.5.2 "Monitor Trap Flag".
172	* See Intel spec. 29.1.4 "EOI Virtualization".
173	* See Intel spec. 29.4.3.3 "APIC-Write VM Exits".
174	* See Intel spec. 29.1.2 "TPR Virtualization".
175	*/
176	/** @todo NSTVMX: r=ramshankar: What about VM-exits due to debug traps (single-step,
177	* I/O breakpoints, data breakpoints), debug exceptions (data breakpoint)
178	* delayed by MovSS blocking, machine-check exceptions. */
179	switch (uExitReason)
180	{
181	case VMX_EXIT_MTF:
182	case VMX_EXIT_VIRTUALIZED_EOI:
183	case VMX_EXIT_APIC_WRITE:
184	case VMX_EXIT_TPR_BELOW_THRESHOLD:
185	return true;
186	}
187	return false;
188	}
189
190
191	/**
192	* Returns whether the VM-entry is vectoring or not given the VM-entry interruption
193	* information field.
194	*
195	* @returns @c true if the VM-entry is vectoring, @c false otherwise.
196	* @param uEntryIntInfo The VM-entry interruption information field.
197	* @param pEntryIntInfoType The VM-entry interruption information type field.
198	* Optional, can be NULL. Only updated when this
199	* function returns @c true.
200	*/
201	DECLINLINE(bool) VMXIsVmentryVectoring(uint32_t uEntryIntInfo, uint8_t *pEntryIntInfoType)
202	{
203	/*
204	* The definition of what is a vectoring VM-entry is taken
205	* from Intel spec. 26.6 "Special Features of VM Entry".
206	*/
207	if (!VMX_ENTRY_INT_INFO_IS_VALID(uEntryIntInfo))
208	return false;
209
210	/* Scope and keep variable defines on top to satisy archaic c89 nonsense. */
211	{
212	uint8_t const uType = VMX_ENTRY_INT_INFO_TYPE(uEntryIntInfo);
213	switch (uType)
214	{
215	case VMX_ENTRY_INT_INFO_TYPE_EXT_INT:
216	case VMX_ENTRY_INT_INFO_TYPE_NMI:
217	case VMX_ENTRY_INT_INFO_TYPE_HW_XCPT:
218	case VMX_ENTRY_INT_INFO_TYPE_SW_INT:
219	case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT:
220	case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT:
221	{
222	if (pEntryIntInfoType)
223	*pEntryIntInfoType = uType;
224	return true;
225	}
226	}
227	}
228	return false;
229	}
230
231
232	/**
233	* Gets the description for a VMX abort reason.
234	*
235	* @returns The descriptive string.
236	* @param enmAbort The VMX abort reason.
237	*/
238	DECLINLINE(const char *) VMXGetAbortDesc(VMXABORT enmAbort)
239	{
240	switch (enmAbort)
241	{
242	case VMXABORT_NONE: return "VMXABORT_NONE";
243	case VMXABORT_SAVE_GUEST_MSRS: return "VMXABORT_SAVE_GUEST_MSRS";
244	case VMXBOART_HOST_PDPTE: return "VMXBOART_HOST_PDPTE";
245	case VMXABORT_CURRENT_VMCS_CORRUPT: return "VMXABORT_CURRENT_VMCS_CORRUPT";
246	case VMXABORT_LOAD_HOST_MSR: return "VMXABORT_LOAD_HOST_MSR";
247	case VMXABORT_MACHINE_CHECK_XCPT: return "VMXABORT_MACHINE_CHECK_XCPT";
248	case VMXABORT_HOST_NOT_IN_LONG_MODE: return "VMXABORT_HOST_NOT_IN_LONG_MODE";
249	default:
250	break;
251	}
252	return "Unknown/invalid";
253	}
254
255
256	/**
257	* Gets the description for a virtual VMCS state.
258	*
259	* @returns The descriptive string.
260	* @param fVmcsState The virtual-VMCS state.
261	*/
262	DECLINLINE(const char *) VMXGetVmcsStateDesc(uint8_t fVmcsState)
263	{
264	switch (fVmcsState)
265	{
266	case VMX_V_VMCS_LAUNCH_STATE_CLEAR: return "Clear";
267	case VMX_V_VMCS_LAUNCH_STATE_LAUNCHED: return "Launched";
268	default: return "Unknown";
269	}
270	}
271
272
273	/**
274	* Gets the description for a VM-entry interruption information event type.
275	*
276	* @returns The descriptive string.
277	* @param uType The event type.
278	*/
279	DECLINLINE(const char *) VMXGetEntryIntInfoTypeDesc(uint8_t uType)
280	{
281	switch (uType)
282	{
283	case VMX_ENTRY_INT_INFO_TYPE_EXT_INT: return "External Interrupt";
284	case VMX_ENTRY_INT_INFO_TYPE_NMI: return "NMI";
285	case VMX_ENTRY_INT_INFO_TYPE_HW_XCPT: return "Hardware Exception";
286	case VMX_ENTRY_INT_INFO_TYPE_SW_INT: return "Software Interrupt";
287	case VMX_ENTRY_INT_INFO_TYPE_PRIV_SW_XCPT: return "Priv. Software Exception";
288	case VMX_ENTRY_INT_INFO_TYPE_SW_XCPT: return "Software Exception";
289	case VMX_ENTRY_INT_INFO_TYPE_OTHER_EVENT: return "Other Event";
290	default:
291	break;
292	}
293	return "Unknown/invalid";
294	}
295
296
297	/**
298	* Gets the description for a VM-exit interruption information event type.
299	*
300	* @returns The descriptive string.
301	* @param uType The event type.
302	*/
303	DECLINLINE(const char *) VMXGetExitIntInfoTypeDesc(uint8_t uType)
304	{
305	switch (uType)
306	{
307	case VMX_EXIT_INT_INFO_TYPE_EXT_INT: return "External Interrupt";
308	case VMX_EXIT_INT_INFO_TYPE_NMI: return "NMI";
309	case VMX_EXIT_INT_INFO_TYPE_HW_XCPT: return "Hardware Exception";
310	case VMX_EXIT_INT_INFO_TYPE_SW_INT: return "Software Interrupt";
311	case VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT: return "Priv. Software Exception";
312	case VMX_EXIT_INT_INFO_TYPE_SW_XCPT: return "Software Exception";
313	default:
314	break;
315	}
316	return "Unknown/invalid";
317	}
318
319
320	/**
321	* Gets the description for an IDT-vectoring information event type.
322	*
323	* @returns The descriptive string.
324	* @param uType The event type.
325	*/
326	DECLINLINE(const char *) VMXGetIdtVectoringInfoTypeDesc(uint8_t uType)
327	{
328	switch (uType)
329	{
330	case VMX_IDT_VECTORING_INFO_TYPE_EXT_INT: return "External Interrupt";
331	case VMX_IDT_VECTORING_INFO_TYPE_NMI: return "NMI";
332	case VMX_IDT_VECTORING_INFO_TYPE_HW_XCPT: return "Hardware Exception";
333	case VMX_IDT_VECTORING_INFO_TYPE_SW_INT: return "Software Interrupt";
334	case VMX_IDT_VECTORING_INFO_TYPE_PRIV_SW_XCPT: return "Priv. Software Exception";
335	case VMX_IDT_VECTORING_INFO_TYPE_SW_XCPT: return "Software Exception";
336	default:
337	break;
338	}
339	return "Unknown/invalid";
340	}
341
342
343	/** @} */
344
345
346	/** @defgroup grp_hm_vmx_asm VMX Assembly Helpers
347	* @{
348	*/
349	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
350
351	/**
352	* Restores some host-state fields that need not be done on every VM-exit.
353	*
354	* @returns VBox status code.
355	* @param fRestoreHostFlags Flags of which host registers needs to be
356	* restored.
357	* @param pRestoreHost Pointer to the host-restore structure.
358	*/
359	DECLASM(int) VMXRestoreHostState(uint32_t fRestoreHostFlags, PVMXRESTOREHOST pRestoreHost);
360
361
362	/**
363	* Dispatches an NMI to the host.
364	*/
365	DECLASM(int) VMXDispatchHostNmi(void);
366
367
368	/**
369	* Executes VMXON.
370	*
371	* @returns VBox status code.
372	* @param HCPhysVmxOn Physical address of VMXON structure.
373	*/
374	#if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
375	DECLASM(int) VMXEnable(RTHCPHYS HCPhysVmxOn);
376	#else
377	DECLINLINE(int) VMXEnable(RTHCPHYS HCPhysVmxOn)
378	{
379	# if VMX_USE_MSC_INTRINSICS
380	unsigned char rcMsc = __vmx_on(&HCPhysVmxOn);
381	if (RT_LIKELY(rcMsc == 0))
382	return VINF_SUCCESS;
383	return rcMsc == 2 ? VERR_VMX_INVALID_VMXON_PTR : VERR_VMX_VMXON_FAILED;
384
385	# elif RT_INLINE_ASM_GNU_STYLE
386	# ifdef RT_ARCH_AMD64
387	int rc;
388	__asm__ __volatile__ (
389	"pushq %2 \n\t"
390	".byte 0xf3, 0x0f, 0xc7, 0x34, 0x24 # VMXON [esp] \n\t"
391	"ja 2f \n\t"
392	"je 1f \n\t"
393	"movl $" RT_XSTR(VERR_VMX_INVALID_VMXON_PTR)", %0 \n\t"
394	"jmp 2f \n\t"
395	"1: \n\t"
396	"movl $" RT_XSTR(VERR_VMX_VMXON_FAILED)", %0 \n\t"
397	"2: \n\t"
398	"add $8, %%rsp \n\t"
399	:"=rm"(rc)
400	:"0"(VINF_SUCCESS),
401	"ir"(HCPhysVmxOn) /* don't allow direct memory reference here, */
402	/* this would not work with -fomit-frame-pointer */
403	:"memory"
404	);
405	return rc;
406	# else
407	int rc;
408	__asm__ __volatile__ (
409	"push %3 \n\t"
410	"push %2 \n\t"
411	".byte 0xf3, 0x0f, 0xc7, 0x34, 0x24 # VMXON [esp] \n\t"
412	"ja 2f \n\t"
413	"je 1f \n\t"
414	"movl $" RT_XSTR(VERR_VMX_INVALID_VMXON_PTR)", %0 \n\t"
415	"jmp 2f \n\t"
416	"1: \n\t"
417	"movl $" RT_XSTR(VERR_VMX_VMXON_FAILED)", %0 \n\t"
418	"2: \n\t"
419	"add $8, %%esp \n\t"
420	:"=rm"(rc)
421	:"0"(VINF_SUCCESS),
422	"ir"((uint32_t)HCPhysVmxOn), /* don't allow direct memory reference here, */
423	"ir"((uint32_t)(HCPhysVmxOn >> 32)) /* this would not work with -fomit-frame-pointer */
424	:"memory"
425	);
426	return rc;
427	# endif
428
429	# elif defined(RT_ARCH_X86)
430	int rc = VINF_SUCCESS;
431	__asm
432	{
433	push dword ptr [HCPhysVmxOn + 4]
434	push dword ptr [HCPhysVmxOn]
435	_emit 0xf3
436	_emit 0x0f
437	_emit 0xc7
438	_emit 0x34
439	_emit 0x24 /* VMXON [esp] */
440	jnc vmxon_good
441	mov dword ptr [rc], VERR_VMX_INVALID_VMXON_PTR
442	jmp the_end
443
444	vmxon_good:
445	jnz the_end
446	mov dword ptr [rc], VERR_VMX_VMXON_FAILED
447	the_end:
448	add esp, 8
449	}
450	return rc;
451
452	# else
453	# error "Shouldn't be here..."
454	# endif
455	}
456	#endif
457
458
459	#if 0
460	#if ((RT_INLINE_ASM_EXTERNAL \|\| !defined(RT_ARCH_X86)) && !VMX_USE_MSC_INTRINSICS)
461	DECLASM(int) VMXEnable(RTHCPHYS HCPhysVmxOn);
462	#else
463	DECLINLINE(int) VMXEnable(RTHCPHYS HCPhysVmxOn)
464	{
465	# if RT_INLINE_ASM_GNU_STYLE
466	int rc = VINF_SUCCESS;
467	__asm__ __volatile__ (
468	"push %3 \n\t"
469	"push %2 \n\t"
470	".byte 0xf3, 0x0f, 0xc7, 0x34, 0x24 # VMXON [esp] \n\t"
471	"ja 2f \n\t"
472	"je 1f \n\t"
473	"movl $" RT_XSTR(VERR_VMX_INVALID_VMXON_PTR)", %0 \n\t"
474	"jmp 2f \n\t"
475	"1: \n\t"
476	"movl $" RT_XSTR(VERR_VMX_VMXON_FAILED)", %0 \n\t"
477	"2: \n\t"
478	"add $8, %%esp \n\t"
479	:"=rm"(rc)
480	:"0"(VINF_SUCCESS),
481	"ir"((uint32_t)HCPhysVmxOn), /* don't allow direct memory reference here, */
482	"ir"((uint32_t)(HCPhysVmxOn >> 32)) /* this would not work with -fomit-frame-pointer */
483	:"memory"
484	);
485	return rc;
486
487	# elif VMX_USE_MSC_INTRINSICS
488	unsigned char rcMsc = __vmx_on(&HCPhysVmxOn);
489	if (RT_LIKELY(rcMsc == 0))
490	return VINF_SUCCESS;
491	return rcMsc == 2 ? VERR_VMX_INVALID_VMXON_PTR : VERR_VMX_VMXON_FAILED;
492
493	# else
494	int rc = VINF_SUCCESS;
495	__asm
496	{
497	push dword ptr [HCPhysVmxOn + 4]
498	push dword ptr [HCPhysVmxOn]
499	_emit 0xf3
500	_emit 0x0f
501	_emit 0xc7
502	_emit 0x34
503	_emit 0x24 /* VMXON [esp] */
504	jnc vmxon_good
505	mov dword ptr [rc], VERR_VMX_INVALID_VMXON_PTR
506	jmp the_end
507
508	vmxon_good:
509	jnz the_end
510	mov dword ptr [rc], VERR_VMX_VMXON_FAILED
511	the_end:
512	add esp, 8
513	}
514	return rc;
515	# endif
516	}
517	#endif
518	#endif
519
520
521	/**
522	* Executes VMXOFF.
523	*/
524	#if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
525	DECLASM(void) VMXDisable(void);
526	#else
527	DECLINLINE(void) VMXDisable(void)
528	{
529	# if VMX_USE_MSC_INTRINSICS
530	__vmx_off();
531
532	# elif RT_INLINE_ASM_GNU_STYLE
533	__asm__ __volatile__ (
534	".byte 0x0f, 0x01, 0xc4 # VMXOFF \n\t"
535	);
536
537	# elif defined(RT_ARCH_X86)
538	__asm
539	{
540	_emit 0x0f
541	_emit 0x01
542	_emit 0xc4 /* VMXOFF */
543	}
544
545	# else
546	# error "Shouldn't be here..."
547	# endif
548	}
549	#endif
550
551
552	#if 0
553	#if ((RT_INLINE_ASM_EXTERNAL \|\| !defined(RT_ARCH_X86)) && !VMX_USE_MSC_INTRINSICS)
554	DECLASM(void) VMXDisable(void);
555	#else
556	DECLINLINE(void) VMXDisable(void)
557	{
558	# if RT_INLINE_ASM_GNU_STYLE
559	__asm__ __volatile__ (
560	".byte 0x0f, 0x01, 0xc4 # VMXOFF \n\t"
561	);
562
563	# elif VMX_USE_MSC_INTRINSICS
564	__vmx_off();
565
566	# else
567	__asm
568	{
569	_emit 0x0f
570	_emit 0x01
571	_emit 0xc4 /* VMXOFF */
572	}
573	# endif
574	}
575	#endif
576	#endif
577
578
579	/**
580	* Executes VMCLEAR.
581	*
582	* @returns VBox status code.
583	* @param HCPhysVmcs Physical address of VM control structure.
584	*/
585	#if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
586	DECLASM(int) VMXClearVmcs(RTHCPHYS HCPhysVmcs);
587	#else
588	DECLINLINE(int) VMXClearVmcs(RTHCPHYS HCPhysVmcs)
589	{
590	# if VMX_USE_MSC_INTRINSICS
591	unsigned char rcMsc = __vmx_vmclear(&HCPhysVmcs);
592	if (RT_LIKELY(rcMsc == 0))
593	return VINF_SUCCESS;
594	return VERR_VMX_INVALID_VMCS_PTR;
595
596	# elif RT_INLINE_ASM_GNU_STYLE
597	# ifdef RT_ARCH_AMD64
598	int rc;
599	__asm__ __volatile__ (
600	"pushq %2 \n\t"
601	".byte 0x66, 0x0f, 0xc7, 0x34, 0x24 # VMCLEAR [esp] \n\t"
602	"jnc 1f \n\t"
603	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
604	"1: \n\t"
605	"add $8, %%rsp \n\t"
606	:"=rm"(rc)
607	:"0"(VINF_SUCCESS),
608	"ir"(HCPhysVmcs) /* don't allow direct memory reference here, */
609	/* this would not work with -fomit-frame-pointer */
610	:"memory"
611	);
612	return rc;
613	# else
614	int rc;
615	__asm__ __volatile__ (
616	"push %3 \n\t"
617	"push %2 \n\t"
618	".byte 0x66, 0x0f, 0xc7, 0x34, 0x24 # VMCLEAR [esp] \n\t"
619	"jnc 1f \n\t"
620	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
621	"1: \n\t"
622	"add $8, %%esp \n\t"
623	:"=rm"(rc)
624	:"0"(VINF_SUCCESS),
625	"ir"((uint32_t)HCPhysVmcs), /* don't allow direct memory reference here, */
626	"ir"((uint32_t)(HCPhysVmcs >> 32)) /* this would not work with -fomit-frame-pointer */
627	:"memory"
628	);
629	return rc;
630	# endif
631
632	# elif defined(RT_ARCH_X86)
633	int rc = VINF_SUCCESS;
634	__asm
635	{
636	push dword ptr [HCPhysVmcs + 4]
637	push dword ptr [HCPhysVmcs]
638	_emit 0x66
639	_emit 0x0f
640	_emit 0xc7
641	_emit 0x34
642	_emit 0x24 /* VMCLEAR [esp] */
643	jnc success
644	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
645	success:
646	add esp, 8
647	}
648	return rc;
649
650	# else
651	# error "Shouldn't be here..."
652	# endif
653	}
654	#endif
655
656
657	#if 0
658	#if ((RT_INLINE_ASM_EXTERNAL \|\| !defined(RT_ARCH_X86)) && !VMX_USE_MSC_INTRINSICS)
659	DECLASM(int) VMXClearVmcs(RTHCPHYS HCPhysVmcs);
660	#else
661	DECLINLINE(int) VMXClearVmcs(RTHCPHYS HCPhysVmcs)
662	{
663	# if RT_INLINE_ASM_GNU_STYLE
664	int rc = VINF_SUCCESS;
665	__asm__ __volatile__ (
666	"push %3 \n\t"
667	"push %2 \n\t"
668	".byte 0x66, 0x0f, 0xc7, 0x34, 0x24 # VMCLEAR [esp] \n\t"
669	"jnc 1f \n\t"
670	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
671	"1: \n\t"
672	"add $8, %%esp \n\t"
673	:"=rm"(rc)
674	:"0"(VINF_SUCCESS),
675	"ir"((uint32_t)HCPhysVmcs), /* don't allow direct memory reference here, */
676	"ir"((uint32_t)(HCPhysVmcs >> 32)) /* this would not work with -fomit-frame-pointer */
677	:"memory"
678	);
679	return rc;
680
681	# elif VMX_USE_MSC_INTRINSICS
682	unsigned char rcMsc = __vmx_vmclear(&HCPhysVmcs);
683	if (RT_LIKELY(rcMsc == 0))
684	return VINF_SUCCESS;
685	return VERR_VMX_INVALID_VMCS_PTR;
686
687	# else
688	int rc = VINF_SUCCESS;
689	__asm
690	{
691	push dword ptr [HCPhysVmcs + 4]
692	push dword ptr [HCPhysVmcs]
693	_emit 0x66
694	_emit 0x0f
695	_emit 0xc7
696	_emit 0x34
697	_emit 0x24 /* VMCLEAR [esp] */
698	jnc success
699	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
700	success:
701	add esp, 8
702	}
703	return rc;
704	# endif
705	}
706	#endif
707	#endif
708
709
710	/**
711	* Executes VMPTRLD.
712	*
713	* @returns VBox status code.
714	* @param HCPhysVmcs Physical address of VMCS structure.
715	*/
716	#if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
717	DECLASM(int) VMXLoadVmcs(RTHCPHYS HCPhysVmcs);
718	#else
719	DECLINLINE(int) VMXLoadVmcs(RTHCPHYS HCPhysVmcs)
720	{
721	# if VMX_USE_MSC_INTRINSICS
722	unsigned char rcMsc = __vmx_vmptrld(&HCPhysVmcs);
723	if (RT_LIKELY(rcMsc == 0))
724	return VINF_SUCCESS;
725	return VERR_VMX_INVALID_VMCS_PTR;
726
727	# elif RT_INLINE_ASM_GNU_STYLE
728	# ifdef RT_ARCH_AMD64
729	int rc;
730	__asm__ __volatile__ (
731	"pushq %2 \n\t"
732	".byte 0x0f, 0xc7, 0x34, 0x24 # VMPTRLD [esp] \n\t"
733	"jnc 1f \n\t"
734	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
735	"1: \n\t"
736	"add $8, %%rsp \n\t"
737	:"=rm"(rc)
738	:"0"(VINF_SUCCESS),
739	"ir"(HCPhysVmcs) /* don't allow direct memory reference here, */
740	/* this will not work with -fomit-frame-pointer */
741	:"memory"
742	);
743	return rc;
744	# else
745	int rc;
746	__asm__ __volatile__ (
747	"push %3 \n\t"
748	"push %2 \n\t"
749	".byte 0x0f, 0xc7, 0x34, 0x24 # VMPTRLD [esp] \n\t"
750	"jnc 1f \n\t"
751	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
752	"1: \n\t"
753	"add $8, %%esp \n\t"
754	:"=rm"(rc)
755	:"0"(VINF_SUCCESS),
756	"ir"((uint32_t)HCPhysVmcs), /* don't allow direct memory reference here, */
757	"ir"((uint32_t)(HCPhysVmcs >> 32)) /* this will not work with -fomit-frame-pointer */
758	:"memory"
759	);
760	return rc;
761	# endif
762
763	# elif defined(RT_ARCH_X86)
764	int rc = VINF_SUCCESS;
765	__asm
766	{
767	push dword ptr [HCPhysVmcs + 4]
768	push dword ptr [HCPhysVmcs]
769	_emit 0x0f
770	_emit 0xc7
771	_emit 0x34
772	_emit 0x24 /* VMPTRLD [esp] */
773	jnc success
774	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
775	success:
776	add esp, 8
777	}
778	return rc;
779
780	# else
781	# error "Shouldn't be here..."
782	# endif
783	}
784	#endif
785
786	#if 0
787	#if ((RT_INLINE_ASM_EXTERNAL \|\| !defined(RT_ARCH_X86)) && !VMX_USE_MSC_INTRINSICS)
788	DECLASM(int) VMXLoadVmcs(RTHCPHYS HCPhysVmcs);
789	#else
790	DECLINLINE(int) VMXLoadVmcs(RTHCPHYS HCPhysVmcs)
791	{
792	# if RT_INLINE_ASM_GNU_STYLE
793	int rc = VINF_SUCCESS;
794	__asm__ __volatile__ (
795	"push %3 \n\t"
796	"push %2 \n\t"
797	".byte 0x0f, 0xc7, 0x34, 0x24 # VMPTRLD [esp] \n\t"
798	"jnc 1f \n\t"
799	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
800	"1: \n\t"
801	"add $8, %%esp \n\t"
802	:"=rm"(rc)
803	:"0"(VINF_SUCCESS),
804	"ir"((uint32_t)HCPhysVmcs), /* don't allow direct memory reference here, */
805	"ir"((uint32_t)(HCPhysVmcs >> 32)) /* this will not work with -fomit-frame-pointer */
806	);
807	return rc;
808
809	# elif VMX_USE_MSC_INTRINSICS
810	unsigned char rcMsc = __vmx_vmptrld(&HCPhysVmcs);
811	if (RT_LIKELY(rcMsc == 0))
812	return VINF_SUCCESS;
813	return VERR_VMX_INVALID_VMCS_PTR;
814
815	# else
816	int rc = VINF_SUCCESS;
817	__asm
818	{
819	push dword ptr [HCPhysVmcs + 4]
820	push dword ptr [HCPhysVmcs]
821	_emit 0x0f
822	_emit 0xc7
823	_emit 0x34
824	_emit 0x24 /* VMPTRLD [esp] */
825	jnc success
826	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
827
828	success:
829	add esp, 8
830	}
831	return rc;
832	# endif
833	}
834	#endif
835	#endif
836
837
838	/**
839	* Executes VMPTRST.
840	*
841	* @returns VBox status code.
842	* @param pHCPhysVmcs Where to store the physical address of the current
843	* VMCS.
844	*/
845	DECLASM(int) VMXGetCurrentVmcs(RTHCPHYS *pHCPhysVmcs);
846
847
848	/**
849	* Executes VMWRITE for a 32-bit field.
850	*
851	* @returns VBox status code.
852	* @retval VINF_SUCCESS.
853	* @retval VERR_VMX_INVALID_VMCS_PTR.
854	* @retval VERR_VMX_INVALID_VMCS_FIELD.
855	*
856	* @param uFieldEnc VMCS field encoding.
857	* @param u32Val The 32-bit value to set.
858	*
859	* @remarks The values of the two status codes can be OR'ed together, the result
860	* will be VERR_VMX_INVALID_VMCS_PTR.
861	*/
862	#if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
863	DECLASM(int) VMXWriteVmcs32(uint32_t uFieldEnc, uint32_t u32Val);
864	#else
865	DECLINLINE(int) VMXWriteVmcs32(uint32_t uFieldEnc, uint32_t u32Val)
866	{
867	# if VMX_USE_MSC_INTRINSICS
868	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
869	__vmx_vmwrite(uFieldEnc, u32Val);
870	return VINF_SUCCESS;
871	# else
872	unsigned char rcMsc = __vmx_vmwrite(uFieldEnc, u32Val);
873	if (RT_LIKELY(rcMsc == 0))
874	return VINF_SUCCESS;
875	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
876	# endif
877
878	# elif RT_INLINE_ASM_GNU_STYLE
879	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
880	__asm__ __volatile__ (
881	".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
882	:
883	:"a"(uFieldEnc),
884	"d"(u32Val)
885	);
886	return VINF_SUCCESS;
887	# else
888	int rc;
889	__asm__ __volatile__ (
890	".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
891	"ja 2f \n\t"
892	"je 1f \n\t"
893	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
894	"jmp 2f \n\t"
895	"1: \n\t"
896	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
897	"2: \n\t"
898	:"=rm"(rc)
899	:"0"(VINF_SUCCESS),
900	"a"(uFieldEnc),
901	"d"(u32Val)
902	);
903	return rc;
904	# endif
905
906	# elif defined(RT_ARCH_X86)
907	int rc = VINF_SUCCESS;
908	__asm
909	{
910	push dword ptr [u32Val]
911	mov eax, [uFieldEnc]
912	_emit 0x0f
913	_emit 0x79
914	_emit 0x04
915	_emit 0x24 /* VMWRITE eax, [esp] */
916	jnc valid_vmcs
917	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
918	jmp the_end
919	valid_vmcs:
920	jnz the_end
921	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
922	the_end:
923	add esp, 4
924	}
925	return rc;
926
927	# else
928	# error "Shouldn't be here..."
929	# endif
930	}
931	#endif
932
933
934	#if 0
935	#if ((RT_INLINE_ASM_EXTERNAL \|\| !defined(RT_ARCH_X86)) && !VMX_USE_MSC_INTRINSICS)
936	DECLASM(int) VMXWriteVmcs32(uint32_t uFieldEnc, uint32_t u32Val);
937	#else
938	DECLINLINE(int) VMXWriteVmcs32(uint32_t uFieldEnc, uint32_t u32Val)
939	{
940	# if RT_INLINE_ASM_GNU_STYLE
941	int rc = VINF_SUCCESS;
942	__asm__ __volatile__ (
943	".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
944	"ja 2f \n\t"
945	"je 1f \n\t"
946	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
947	"jmp 2f \n\t"
948	"1: \n\t"
949	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
950	"2: \n\t"
951	:"=rm"(rc)
952	:"0"(VINF_SUCCESS),
953	"a"(uFieldEnc),
954	"d"(u32Val)
955	);
956	return rc;
957
958	# elif VMX_USE_MSC_INTRINSICS
959	unsigned char rcMsc = __vmx_vmwrite(uFieldEnc, u32Val);
960	if (RT_LIKELY(rcMsc == 0))
961	return VINF_SUCCESS;
962	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
963
964	#else
965	int rc = VINF_SUCCESS;
966	__asm
967	{
968	push dword ptr [u32Val]
969	mov eax, [uFieldEnc]
970	_emit 0x0f
971	_emit 0x79
972	_emit 0x04
973	_emit 0x24 /* VMWRITE eax, [esp] */
974	jnc valid_vmcs
975	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
976	jmp the_end
977
978	valid_vmcs:
979	jnz the_end
980	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
981	the_end:
982	add esp, 4
983	}
984	return rc;
985	# endif
986	}
987	#endif
988	#endif
989
990
991	/**
992	* Executes VMWRITE for a 64-bit field.
993	*
994	* @returns VBox status code.
995	* @retval VINF_SUCCESS.
996	* @retval VERR_VMX_INVALID_VMCS_PTR.
997	* @retval VERR_VMX_INVALID_VMCS_FIELD.
998	*
999	* @param uFieldEnc The VMCS field encoding.
1000	* @param u64Val The 16, 32 or 64-bit value to set.
1001	*
1002	* @remarks The values of the two status codes can be OR'ed together, the result
1003	* will be VERR_VMX_INVALID_VMCS_PTR.
1004	*/
1005	#if defined(RT_ARCH_X86) \|\| (RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS)
1006	DECLASM(int) VMXWriteVmcs64(uint32_t uFieldEnc, uint64_t u64Val);
1007	#else
1008	DECLINLINE(int) VMXWriteVmcs64(uint32_t uFieldEnc, uint64_t u64Val)
1009	{
1010	# if VMX_USE_MSC_INTRINSICS
1011	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
1012	__vmx_vmwrite(uFieldEnc, u64Val);
1013	return VINF_SUCCESS;
1014	# else
1015	unsigned char rcMsc = __vmx_vmwrite(uFieldEnc, u64Val);
1016	if (RT_LIKELY(rcMsc == 0))
1017	return VINF_SUCCESS;
1018	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
1019	# endif
1020
1021	# elif RT_INLINE_ASM_GNU_STYLE
1022	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
1023	__asm__ __volatile__ (
1024	".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
1025	:
1026	:"a"(uFieldEnc),
1027	"d"(u64Val)
1028	);
1029	return VINF_SUCCESS;
1030	# else
1031	int rc;
1032	__asm__ __volatile__ (
1033	".byte 0x0f, 0x79, 0xc2 # VMWRITE eax, edx \n\t"
1034	"ja 2f \n\t"
1035	"je 1f \n\t"
1036	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
1037	"jmp 2f \n\t"
1038	"1: \n\t"
1039	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
1040	"2: \n\t"
1041	:"=rm"(rc)
1042	:"0"(VINF_SUCCESS),
1043	"a"(uFieldEnc),
1044	"d"(u64Val)
1045	);
1046	return rc;
1047	# endif
1048
1049	# else
1050	# error "Shouldn't be here..."
1051	# endif
1052	}
1053	#endif
1054
1055
1056	#if 0
1057	#if (defined(RT_ARCH_AMD64) && VMX_USE_MSC_INTRINSICS)
1058	DECLINLINE(int) VMXWriteVmcs64(uint32_t uFieldEnc, uint64_t u64Val)
1059	{
1060	unsigned char rcMsc = __vmx_vmwrite(uFieldEnc, u64Val);
1061	if (RT_LIKELY(rcMsc == 0))
1062	return VINF_SUCCESS;
1063	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
1064	}
1065	#else
1066	DECLASM(int) VMXWriteVmcs64(uint32_t uFieldEnc, uint64_t u64Val);
1067	#endif
1068	#endif
1069
1070
1071	/**
1072	* Executes VMWRITE for a 16-bit VMCS field.
1073	*
1074	* @returns VBox status code.
1075	* @retval VINF_SUCCESS.
1076	* @retval VERR_VMX_INVALID_VMCS_PTR.
1077	* @retval VERR_VMX_INVALID_VMCS_FIELD.
1078	*
1079	* @param uVmcsField The VMCS field.
1080	* @param u16Val The 16-bit value to set.
1081	*
1082	* @remarks The values of the two status codes can be OR'ed together, the result
1083	* will be VERR_VMX_INVALID_VMCS_PTR.
1084	*/
1085	DECLINLINE(int) VMXWriteVmcs16(uint32_t uVmcsField, uint16_t u16Val)
1086	{
1087	AssertMsg(RT_BF_GET(uVmcsField, VMX_BF_VMCSFIELD_WIDTH) == VMX_VMCSFIELD_WIDTH_16BIT, ("%#RX32\n", uVmcsField));
1088	return VMXWriteVmcs32(uVmcsField, u16Val);
1089	}
1090
1091
1092	/**
1093	* Executes VMWRITE for a natural-width VMCS field.
1094	*/
1095	#ifdef RT_ARCH_AMD64
1096	# define VMXWriteVmcsNw VMXWriteVmcs64
1097	#else
1098	# define VMXWriteVmcsNw VMXWriteVmcs32
1099	#endif
1100
1101
1102	/**
1103	* Invalidate a page using INVEPT.
1104	*
1105	* @returns VBox status code.
1106	* @param enmFlush Type of flush.
1107	* @param pDescriptor Pointer to the descriptor.
1108	*/
1109	DECLASM(int) VMXR0InvEPT(VMXTLBFLUSHEPT enmFlush, uint64_t *pDescriptor);
1110
1111
1112	/**
1113	* Invalidate a page using INVVPID.
1114	*
1115	* @returns VBox status code.
1116	* @param enmFlush Type of flush.
1117	* @param pDescriptor Pointer to the descriptor.
1118	*/
1119	DECLASM(int) VMXR0InvVPID(VMXTLBFLUSHVPID enmFlush, uint64_t *pDescriptor);
1120
1121
1122	/**
1123	* Executes VMREAD for a 32-bit field.
1124	*
1125	* @returns VBox status code.
1126	* @retval VINF_SUCCESS.
1127	* @retval VERR_VMX_INVALID_VMCS_PTR.
1128	* @retval VERR_VMX_INVALID_VMCS_FIELD.
1129	*
1130	* @param uFieldEnc The VMCS field encoding.
1131	* @param pData Where to store VMCS field value.
1132	*
1133	* @remarks The values of the two status codes can be OR'ed together, the result
1134	* will be VERR_VMX_INVALID_VMCS_PTR.
1135	*/
1136	#if RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS
1137	DECLASM(int) VMXReadVmcs32(uint32_t uFieldEnc, uint32_t *pData);
1138	#else
1139	DECLINLINE(int) VMXReadVmcs32(uint32_t uFieldEnc, uint32_t *pData)
1140	{
1141	# if VMX_USE_MSC_INTRINSICS
1142	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
1143	uint64_t u64Tmp = 0;
1144	__vmx_vmread(uFieldEnc, &u64Tmp);
1145	*pData = (uint32_t)u64Tmp;
1146	return VINF_SUCCESS;
1147	# else
1148	unsigned char rcMsc;
1149	uint64_t u64Tmp;
1150	rcMsc = __vmx_vmread(uFieldEnc, &u64Tmp);
1151	*pData = (uint32_t)u64Tmp;
1152	if (RT_LIKELY(rcMsc == 0))
1153	return VINF_SUCCESS;
1154	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
1155	# endif
1156
1157	# elif RT_INLINE_ASM_GNU_STYLE
1158	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
1159	__asm__ __volatile__ (
1160	".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
1161	:"=d"(*pData)
1162	:"a"(uFieldEnc),
1163	"d"(0)
1164	);
1165	return VINF_SUCCESS;
1166	# else
1167	int rc;
1168	__asm__ __volatile__ (
1169	"movl $" RT_XSTR(VINF_SUCCESS)", %0 \n\t"
1170	".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
1171	"ja 2f \n\t"
1172	"je 1f \n\t"
1173	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
1174	"jmp 2f \n\t"
1175	"1: \n\t"
1176	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
1177	"2: \n\t"
1178	:"=&r"(rc),
1179	"=d"(*pData)
1180	:"a"(uFieldEnc),
1181	"d"(0)
1182	);
1183	return rc;
1184	# endif
1185
1186	# elif defined(RT_ARCH_X86)
1187	int rc = VINF_SUCCESS;
1188	__asm
1189	{
1190	sub esp, 4
1191	mov dword ptr [esp], 0
1192	mov eax, [uFieldEnc]
1193	_emit 0x0f
1194	_emit 0x78
1195	_emit 0x04
1196	_emit 0x24 /* VMREAD eax, [esp] */
1197	mov edx, pData
1198	pop dword ptr [edx]
1199	jnc valid_vmcs
1200	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
1201	jmp the_end
1202	valid_vmcs:
1203	jnz the_end
1204	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
1205	the_end:
1206	}
1207	return rc;
1208
1209	# else
1210	# error "Shouldn't be here..."
1211	# endif
1212	}
1213	#endif
1214
1215	#if 0
1216	#if ((RT_INLINE_ASM_EXTERNAL \|\| !defined(RT_ARCH_X86)) && !VMX_USE_MSC_INTRINSICS)
1217	DECLASM(int) VMXReadVmcs32(uint32_t uFieldEnc, uint32_t *pData);
1218	#else
1219	DECLINLINE(int) VMXReadVmcs32(uint32_t uFieldEnc, uint32_t *pData)
1220	{
1221	# if RT_INLINE_ASM_GNU_STYLE
1222	int rc = VINF_SUCCESS;
1223	__asm__ __volatile__ (
1224	"movl $" RT_XSTR(VINF_SUCCESS)", %0 \n\t"
1225	".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
1226	"ja 2f \n\t"
1227	"je 1f \n\t"
1228	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
1229	"jmp 2f \n\t"
1230	"1: \n\t"
1231	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
1232	"2: \n\t"
1233	:"=&r"(rc),
1234	"=d"(*pData)
1235	:"a"(uFieldEnc),
1236	"d"(0)
1237	);
1238	return rc;
1239
1240	# elif VMX_USE_MSC_INTRINSICS
1241	unsigned char rcMsc;
1242	# ifdef RT_ARCH_X86
1243	rcMsc = __vmx_vmread(uFieldEnc, pData);
1244	# else
1245	uint64_t u64Tmp;
1246	rcMsc = __vmx_vmread(uFieldEnc, &u64Tmp);
1247	*pData = (uint32_t)u64Tmp;
1248	# endif
1249	if (RT_LIKELY(rcMsc == 0))
1250	return VINF_SUCCESS;
1251	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
1252
1253	#else
1254	int rc = VINF_SUCCESS;
1255	__asm
1256	{
1257	sub esp, 4
1258	mov dword ptr [esp], 0
1259	mov eax, [uFieldEnc]
1260	_emit 0x0f
1261	_emit 0x78
1262	_emit 0x04
1263	_emit 0x24 /* VMREAD eax, [esp] */
1264	mov edx, pData
1265	pop dword ptr [edx]
1266	jnc valid_vmcs
1267	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_PTR
1268	jmp the_end
1269
1270	valid_vmcs:
1271	jnz the_end
1272	mov dword ptr [rc], VERR_VMX_INVALID_VMCS_FIELD
1273	the_end:
1274	}
1275	return rc;
1276	# endif
1277	}
1278	#endif
1279	#endif
1280
1281
1282	/**
1283	* Executes VMREAD for a 64-bit field.
1284	*
1285	* @returns VBox status code.
1286	* @retval VINF_SUCCESS.
1287	* @retval VERR_VMX_INVALID_VMCS_PTR.
1288	* @retval VERR_VMX_INVALID_VMCS_FIELD.
1289	*
1290	* @param uFieldEnc The VMCS field encoding.
1291	* @param pData Where to store VMCS field value.
1292	*
1293	* @remarks The values of the two status codes can be OR'ed together, the result
1294	* will be VERR_VMX_INVALID_VMCS_PTR.
1295	*/
1296	#if defined(RT_ARCH_X86) \|\| (RT_INLINE_ASM_EXTERNAL && !VMX_USE_MSC_INTRINSICS)
1297	DECLASM(int) VMXReadVmcs64(uint32_t uFieldEnc, uint64_t *pData);
1298	#else
1299	DECLINLINE(int) VMXReadVmcs64(uint32_t uFieldEnc, uint64_t *pData)
1300	{
1301	# if VMX_USE_MSC_INTRINSICS
1302	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
1303	__vmx_vmread(uFieldEnc, pData);
1304	return VINF_SUCCESS;
1305	# else
1306	unsigned char rcMsc;
1307	rcMsc = __vmx_vmread(uFieldEnc, pData);
1308	if (RT_LIKELY(rcMsc == 0))
1309	return VINF_SUCCESS;
1310	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
1311	# endif
1312
1313	# elif RT_INLINE_ASM_GNU_STYLE
1314	# ifdef VBOX_WITH_VMREAD_VMWRITE_NOCHECK
1315	__asm__ __volatile__ (
1316	".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
1317	:"=d"(*pData)
1318	:"a"(uFieldEnc),
1319	"d"(0)
1320	);
1321	return VINF_SUCCESS;
1322	# else
1323	int rc;
1324	__asm__ __volatile__ (
1325	"movl $" RT_XSTR(VINF_SUCCESS)", %0 \n\t"
1326	".byte 0x0f, 0x78, 0xc2 # VMREAD eax, edx \n\t"
1327	"ja 2f \n\t"
1328	"je 1f \n\t"
1329	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_PTR)", %0 \n\t"
1330	"jmp 2f \n\t"
1331	"1: \n\t"
1332	"movl $" RT_XSTR(VERR_VMX_INVALID_VMCS_FIELD)", %0 \n\t"
1333	"2: \n\t"
1334	:"=&r"(rc),
1335	"=d"(*pData)
1336	:"a"(uFieldEnc),
1337	"d"(0)
1338	);
1339	return rc;
1340	# endif
1341	# else
1342	# error "Shouldn't be here..."
1343	# endif
1344	}
1345	#endif
1346
1347
1348	#if 0
1349	#if (!defined(RT_ARCH_X86) && !VMX_USE_MSC_INTRINSICS)
1350	DECLASM(int) VMXReadVmcs64(uint32_t uFieldEnc, uint64_t *pData);
1351	#else
1352	DECLINLINE(int) VMXReadVmcs64(uint32_t uFieldEnc, uint64_t *pData)
1353	{
1354	# if VMX_USE_MSC_INTRINSICS
1355	unsigned char rcMsc;
1356	# ifdef RT_ARCH_X86
1357	size_t uLow;
1358	size_t uHigh;
1359	rcMsc = __vmx_vmread(uFieldEnc, &uLow);
1360	rcMsc \|= __vmx_vmread(uFieldEnc + 1, &uHigh);
1361	*pData = RT_MAKE_U64(uLow, uHigh);
1362	# else
1363	rcMsc = __vmx_vmread(uFieldEnc, pData);
1364	# endif
1365	if (RT_LIKELY(rcMsc == 0))
1366	return VINF_SUCCESS;
1367	return rcMsc == 2 ? VERR_VMX_INVALID_VMCS_PTR : VERR_VMX_INVALID_VMCS_FIELD;
1368
1369	# elif defined(RT_ARCH_X86)
1370	int rc;
1371	uint32_t val_hi, val;
1372	rc = VMXReadVmcs32(uFieldEnc, &val);
1373	rc \|= VMXReadVmcs32(uFieldEnc + 1, &val_hi);
1374	AssertRC(rc);
1375	*pData = RT_MAKE_U64(val, val_hi);
1376	return rc;
1377
1378	# else
1379	# error "Shouldn't be here..."
1380	# endif
1381	}
1382	#endif
1383	#endif
1384
1385
1386	/**
1387	* Executes VMREAD for a 16-bit field.
1388	*
1389	* @returns VBox status code.
1390	* @retval VINF_SUCCESS.
1391	* @retval VERR_VMX_INVALID_VMCS_PTR.
1392	* @retval VERR_VMX_INVALID_VMCS_FIELD.
1393	*
1394	* @param uVmcsField The VMCS field.
1395	* @param pData Where to store VMCS field value.
1396	*
1397	* @remarks The values of the two status codes can be OR'ed together, the result
1398	* will be VERR_VMX_INVALID_VMCS_PTR.
1399	*/
1400	DECLINLINE(int) VMXReadVmcs16(uint32_t uVmcsField, uint16_t *pData)
1401	{
1402	uint32_t u32Tmp;
1403	int rc;
1404	AssertMsg(RT_BF_GET(uVmcsField, VMX_BF_VMCSFIELD_WIDTH) == VMX_VMCSFIELD_WIDTH_16BIT, ("%#RX32\n", uVmcsField));
1405	rc = VMXReadVmcs32(uVmcsField, &u32Tmp);
1406	*pData = (uint16_t)u32Tmp;
1407	return rc;
1408	}
1409
1410
1411	/**
1412	* Executes VMREAD for a natural-width VMCS field.
1413	*/
1414	#ifdef RT_ARCH_AMD64
1415	# define VMXReadVmcsNw VMXReadVmcs64
1416	#else
1417	# define VMXReadVmcsNw VMXReadVmcs32
1418	#endif
1419
1420	#endif /* RT_ARCH_AMD64 \|\| RT_ARCH_X86 */
1421
1422	/** @} */
1423
1424	#endif /* !VBOX_INCLUDED_vmm_hmvmxinline_h */
1425

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source: vbox/trunk/include/VBox/vmm/hmvmxinline.h@ 80537

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