sup.h@ 87343

Last change on this file since 87343 was 85748, checked in by vboxsync, 4 years ago
SUPDrv: Added flag for detecting Virtualized VMSAVE/VMLOAD feature on AMD CPUs.
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1	/** @file
2	* SUP - Support Library. (HDrv)
3	*/
4
5	/*
6	* Copyright (C) 2006-2020 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_sup_h
27	#define VBOX_INCLUDED_sup_h
28	#ifndef RT_WITHOUT_PRAGMA_ONCE
29	# pragma once
30	#endif
31
32	#include <VBox/cdefs.h>
33	#include <VBox/types.h>
34	#include <iprt/assert.h>
35	#include <iprt/stdarg.h>
36	#include <iprt/cpuset.h>
37	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
38	# include <iprt/asm-amd64-x86.h>
39	#endif
40
41	RT_C_DECLS_BEGIN
42
43	struct VTGOBJHDR;
44	struct VTGPROBELOC;
45
46
47	/** @defgroup grp_sup The Support Library API
48	* @{
49	*/
50
51	/**
52	* Physical page descriptor.
53	*/
54	#pragma pack(4) /* space is more important. */
55	typedef struct SUPPAGE
56	{
57	/** Physical memory address. */
58	RTHCPHYS Phys;
59	/** Reserved entry for internal use by the caller. */
60	RTHCUINTPTR uReserved;
61	} SUPPAGE;
62	#pragma pack()
63	/** Pointer to a page descriptor. */
64	typedef SUPPAGE *PSUPPAGE;
65	/** Pointer to a const page descriptor. */
66	typedef const SUPPAGE *PCSUPPAGE;
67
68	/**
69	* The paging mode.
70	*
71	* @remarks Users are making assumptions about the order here!
72	*/
73	typedef enum SUPPAGINGMODE
74	{
75	/** The usual invalid entry.
76	* This is returned by SUPR3GetPagingMode() */
77	SUPPAGINGMODE_INVALID = 0,
78	/** Normal 32-bit paging, no global pages */
79	SUPPAGINGMODE_32_BIT,
80	/** Normal 32-bit paging with global pages. */
81	SUPPAGINGMODE_32_BIT_GLOBAL,
82	/** PAE mode, no global pages, no NX. */
83	SUPPAGINGMODE_PAE,
84	/** PAE mode with global pages. */
85	SUPPAGINGMODE_PAE_GLOBAL,
86	/** PAE mode with NX, no global pages. */
87	SUPPAGINGMODE_PAE_NX,
88	/** PAE mode with global pages and NX. */
89	SUPPAGINGMODE_PAE_GLOBAL_NX,
90	/** AMD64 mode, no global pages. */
91	SUPPAGINGMODE_AMD64,
92	/** AMD64 mode with global pages, no NX. */
93	SUPPAGINGMODE_AMD64_GLOBAL,
94	/** AMD64 mode with NX, no global pages. */
95	SUPPAGINGMODE_AMD64_NX,
96	/** AMD64 mode with global pages and NX. */
97	SUPPAGINGMODE_AMD64_GLOBAL_NX
98	} SUPPAGINGMODE;
99
100
101	/** @name Flags returned by SUPR0GetKernelFeatures().
102	* @{
103	*/
104	/** GDT is read-only. */
105	#define SUPKERNELFEATURES_GDT_READ_ONLY RT_BIT(0)
106	/** SMAP is possibly enabled. */
107	#define SUPKERNELFEATURES_SMAP RT_BIT(1)
108	/** GDT is read-only but the writable GDT can be fetched by SUPR0GetCurrentGdtRw(). */
109	#define SUPKERNELFEATURES_GDT_NEED_WRITABLE RT_BIT(2)
110	/** @} */
111
112
113	/**
114	* Hardware-virtualization MSRs.
115	*/
116	typedef struct SUPHWVIRTMSRS
117	{
118	union
119	{
120	struct
121	{
122	uint64_t u64FeatCtrl;
123	uint64_t u64Basic;
124	uint64_t u64PinCtls;
125	uint64_t u64ProcCtls;
126	uint64_t u64ProcCtls2;
127	uint64_t u64ExitCtls;
128	uint64_t u64EntryCtls;
129	uint64_t u64TruePinCtls;
130	uint64_t u64TrueProcCtls;
131	uint64_t u64TrueEntryCtls;
132	uint64_t u64TrueExitCtls;
133	uint64_t u64Misc;
134	uint64_t u64Cr0Fixed0;
135	uint64_t u64Cr0Fixed1;
136	uint64_t u64Cr4Fixed0;
137	uint64_t u64Cr4Fixed1;
138	uint64_t u64VmcsEnum;
139	uint64_t u64VmFunc;
140	uint64_t u64EptVpidCaps;
141	uint64_t a_u64Reserved[9];
142	} vmx;
143	struct
144	{
145	uint64_t u64MsrHwcr;
146	uint64_t u64MsrSmmAddr;
147	uint64_t u64MsrSmmMask;
148	uint64_t u64Padding[25];
149	} svm;
150	} u;
151	} SUPHWVIRTMSRS;
152	AssertCompileSize(SUPHWVIRTMSRS, 224);
153	/** Pointer to a hardware-virtualization MSRs struct. */
154	typedef SUPHWVIRTMSRS *PSUPHWVIRTMSRS;
155	/** Pointer to a hardware-virtualization MSRs struct. */
156	typedef const SUPHWVIRTMSRS *PCSUPHWVIRTMSRS;
157
158
159	/**
160	* Usermode probe context information.
161	*/
162	typedef struct SUPDRVTRACERUSRCTX
163	{
164	/** The probe ID from the VTG location record. */
165	uint32_t idProbe;
166	/** 32 if X86, 64 if AMD64. */
167	uint8_t cBits;
168	/** Reserved padding. */
169	uint8_t abReserved[3];
170	/** Data which format is dictated by the cBits member. */
171	union
172	{
173	/** X86 context info. */
174	struct
175	{
176	uint32_t uVtgProbeLoc; /*< Location record address. /
177	uint32_t aArgs[20]; /*< Raw arguments. /
178	uint32_t eip;
179	uint32_t eflags;
180	uint32_t eax;
181	uint32_t ecx;
182	uint32_t edx;
183	uint32_t ebx;
184	uint32_t esp;
185	uint32_t ebp;
186	uint32_t esi;
187	uint32_t edi;
188	uint16_t cs;
189	uint16_t ss;
190	uint16_t ds;
191	uint16_t es;
192	uint16_t fs;
193	uint16_t gs;
194	} X86;
195
196	/** AMD64 context info. */
197	struct
198	{
199	uint64_t uVtgProbeLoc; /*< Location record address. /
200	uint64_t aArgs[10]; /*< Raw arguments. /
201	uint64_t rip;
202	uint64_t rflags;
203	uint64_t rax;
204	uint64_t rcx;
205	uint64_t rdx;
206	uint64_t rbx;
207	uint64_t rsp;
208	uint64_t rbp;
209	uint64_t rsi;
210	uint64_t rdi;
211	uint64_t r8;
212	uint64_t r9;
213	uint64_t r10;
214	uint64_t r11;
215	uint64_t r12;
216	uint64_t r13;
217	uint64_t r14;
218	uint64_t r15;
219	} Amd64;
220	} u;
221	} SUPDRVTRACERUSRCTX;
222	/** Pointer to the usermode probe context information. */
223	typedef SUPDRVTRACERUSRCTX *PSUPDRVTRACERUSRCTX;
224	/** Pointer to the const usermode probe context information. */
225	typedef SUPDRVTRACERUSRCTX const *PCSUPDRVTRACERUSRCTX;
226
227	/**
228	* The result of a modification operation (SUPMSRPROBEROP_MODIFY or
229	* SUPMSRPROBEROP_MODIFY_FASTER).
230	*/
231	typedef struct SUPMSRPROBERMODIFYRESULT
232	{
233	/** The MSR value prior to the modifications. Valid if fBeforeGp is false */
234	uint64_t uBefore;
235	/** The value that was written. Valid if fBeforeGp is false */
236	uint64_t uWritten;
237	/** The MSR value after the modifications. Valid if AfterGp is false. */
238	uint64_t uAfter;
239	/** Set if we GPed reading the MSR before the modification. */
240	bool fBeforeGp;
241	/** Set if we GPed while trying to write the modified value.
242	* This is set when fBeforeGp is true. */
243	bool fModifyGp;
244	/** Set if we GPed while trying to read the MSR after the modification.
245	* This is set when fBeforeGp is true. */
246	bool fAfterGp;
247	/** Set if we GPed while trying to restore the MSR after the modification.
248	* This is set when fBeforeGp is true. */
249	bool fRestoreGp;
250	/** Structure size alignment padding. */
251	bool afReserved[4];
252	} SUPMSRPROBERMODIFYRESULT, *PSUPMSRPROBERMODIFYRESULT;
253
254
255	/**
256	* The CPU state.
257	*/
258	typedef enum SUPGIPCPUSTATE
259	{
260	/** Invalid CPU state / unused CPU entry. */
261	SUPGIPCPUSTATE_INVALID = 0,
262	/** The CPU is not present. */
263	SUPGIPCPUSTATE_ABSENT,
264	/** The CPU is offline. */
265	SUPGIPCPUSTATE_OFFLINE,
266	/** The CPU is online. */
267	SUPGIPCPUSTATE_ONLINE,
268	/** Force 32-bit enum type. */
269	SUPGIPCPUSTATE_32_BIT_HACK = 0x7fffffff
270	} SUPGIPCPUSTATE;
271
272	/**
273	* Per CPU data.
274	*/
275	typedef struct SUPGIPCPU
276	{
277	/** Update transaction number.
278	* This number is incremented at the start and end of each update. It follows
279	* thusly that odd numbers indicates update in progress, while even numbers
280	* indicate stable data. Use this to make sure that the data items you fetch
281	* are consistent. */
282	volatile uint32_t u32TransactionId;
283	/** The interval in TSC ticks between two NanoTS updates.
284	* This is the average interval over the last 2, 4 or 8 updates + a little slack.
285	* The slack makes the time go a tiny tiny bit slower and extends the interval enough
286	* to avoid ending up with too many 1ns increments. */
287	volatile uint32_t u32UpdateIntervalTSC;
288	/** Current nanosecond timestamp. */
289	volatile uint64_t u64NanoTS;
290	/** The TSC at the time of u64NanoTS. */
291	volatile uint64_t u64TSC;
292	/** Current CPU Frequency. */
293	volatile uint64_t u64CpuHz;
294	/** The TSC delta with reference to the master TSC, subtract from RDTSC. */
295	volatile int64_t i64TSCDelta;
296	/** Number of errors during updating.
297	* Typical errors are under/overflows. */
298	volatile uint32_t cErrors;
299	/** Index of the head item in au32TSCHistory. */
300	volatile uint32_t iTSCHistoryHead;
301	/** Array of recent TSC interval deltas.
302	* The most recent item is at index iTSCHistoryHead.
303	* This history is used to calculate u32UpdateIntervalTSC.
304	*/
305	volatile uint32_t au32TSCHistory[8];
306	/** The interval between the last two NanoTS updates. (experiment for now) */
307	volatile uint32_t u32PrevUpdateIntervalNS;
308
309	/** Reserved for future per processor data. */
310	volatile uint32_t u32Reserved;
311	/** The TSC value read while doing TSC delta measurements across CPUs. */
312	volatile uint64_t u64TSCSample;
313	/** Reserved for future per processor data. */
314	volatile uint32_t au32Reserved1[3];
315
316	/** The CPU state. */
317	SUPGIPCPUSTATE volatile enmState;
318	/** The host CPU ID of this CPU (the SUPGIPCPU is indexed by APIC ID). */
319	RTCPUID idCpu;
320	/** The CPU set index of this CPU. */
321	int16_t iCpuSet;
322	/** CPU group number (always zero, except on windows). */
323	uint16_t iCpuGroup;
324	/** CPU group member number (same as iCpuSet, except on windows). */
325	uint16_t iCpuGroupMember;
326	/** The APIC ID of this CPU. */
327	uint16_t idApic;
328	/** @todo Add topology/NUMA info. */
329	uint32_t iReservedForNumaNode;
330	} SUPGIPCPU;
331	AssertCompileSize(RTCPUID, 4);
332	AssertCompileSize(SUPGIPCPU, 128);
333	AssertCompileMemberAlignment(SUPGIPCPU, u64NanoTS, 8);
334	AssertCompileMemberAlignment(SUPGIPCPU, u64TSC, 8);
335	AssertCompileMemberAlignment(SUPGIPCPU, u64TSCSample, 8);
336
337	/** Pointer to per cpu data.
338	* @remark there is no const version of this typedef, see g_pSUPGlobalInfoPage for details. */
339	typedef SUPGIPCPU *PSUPGIPCPU;
340
341	/**
342	* CPU group information.
343	* @remarks Windows only.
344	*/
345	typedef struct SUPGIPCPUGROUP
346	{
347	/** Current number of CPUs in this group. */
348	uint16_t volatile cMembers;
349	/** Maximum number of CPUs in the group. */
350	uint16_t cMaxMembers;
351	/** The CPU set index of the members. This table has cMaxMembers entries.
352	* @note For various reasons, entries from cMembers and up to cMaxMembers are
353	* may change as the host OS does set dynamic assignments during CPU
354	* hotplugging. */
355	int16_t aiCpuSetIdxs[1];
356	} SUPGIPCPUGROUP;
357	/** Pointer to a GIP CPU group structure. */
358	typedef SUPGIPCPUGROUP *PSUPGIPCPUGROUP;
359	/** Pointer to a const GIP CPU group structure. */
360	typedef SUPGIPCPUGROUP const *PCSUPGIPCPUGROUP;
361
362	/**
363	* The rules concerning the applicability of SUPGIPCPU::i64TscDelta.
364	*/
365	typedef enum SUPGIPUSETSCDELTA
366	{
367	/** Value for SUPGIPMODE_ASYNC_TSC. */
368	SUPGIPUSETSCDELTA_NOT_APPLICABLE = 0,
369	/** The OS specific part of SUPDrv (or the user) claims the TSC is as
370	* good as zero. */
371	SUPGIPUSETSCDELTA_ZERO_CLAIMED,
372	/** The differences in RDTSC output between the CPUs/cores/threads should
373	* be considered zero for all practical purposes. */
374	SUPGIPUSETSCDELTA_PRACTICALLY_ZERO,
375	/** The differences in RDTSC output between the CPUs/cores/threads are a few
376	* hundred ticks or less. (Probably not worth calling ASMGetApicId two times
377	* just to apply deltas.) */
378	SUPGIPUSETSCDELTA_ROUGHLY_ZERO,
379	/** Significant differences in RDTSC output between the CPUs/cores/threads,
380	* deltas must be applied. */
381	SUPGIPUSETSCDELTA_NOT_ZERO,
382	/** End of valid values (exclusive). */
383	SUPGIPUSETSCDELTA_END,
384	/** Make sure the type is 32-bit sized. */
385	SUPGIPUSETSCDELTA_32BIT_HACK = 0x7fffffff
386	} SUPGIPUSETSCDELTA;
387
388
389	/** @name SUPGIPGETCPU_XXX - methods that aCPUs can be indexed.
390	*
391	* @note Linux offers information via selector 0x78, and Windows via selector
392	* 0x53. But since they both support RDTSCP as well, and because most
393	* CPUs now have RDTSCP, we prefer it over LSL. We can implement more
394	* alternatives if it becomes necessary.
395	*
396	* @{
397	*/
398	/** Use ASMGetApicId (or equivalent) and translate the result via
399	* aiCpuFromApicId. */
400	#define SUPGIPGETCPU_APIC_ID RT_BIT_32(0)
401	/** Use RDTSCP and translate the first RTCPUSET_MAX_CPUS of ECX via
402	* aiCpuFromCpuSetIdx.
403	*
404	* Linux stores the RTMpCpuId() value in ECX[11:0] and NUMA node number in
405	* ECX[12:31]. Solaris only stores RTMpCpuId() in ECX. On both systems
406	* RTMpCpuId() == RTMpCpuIdToSetIndex(RTMpCpuId()). RTCPUSET_MAX_CPUS is
407	* currently 64, 256 or 1024 in size, which lower than
408	* 4096, so there shouldn't be any range issues. */
409	#define SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS RT_BIT_32(1)
410	/** Subtract the max IDT size from IDTR.LIMIT, extract the
411	* first RTCPUSET_MAX_CPUS and translate it via aiCpuFromCpuSetIdx.
412	*
413	* Darwin stores the RTMpCpuId() (== RTMpCpuIdToSetIndex(RTMpCpuId()))
414	* value in the IDT limit. The masking is a precaution against what linux
415	* does with RDTSCP. */
416	#define SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS RT_BIT_32(2)
417	/** Windows specific RDTSCP variant, where CH gives you the group and CL gives
418	* you the CPU number within that group.
419	*
420	* Use SUPGLOBALINFOPAGE::aidFirstCpuFromCpuGroup to get the group base CPU set
421	* index, then translate the sum of thru aiCpuFromCpuSetIdx to find the aCPUs
422	* entry.
423	*
424	* @note The group number is actually 16-bit wide (ECX[23:8]), but we simplify
425	* it since we only support 256 CPUs/groups at the moment.
426	*/
427	#define SUPGIPGETCPU_RDTSCP_GROUP_IN_CH_NUMBER_IN_CL RT_BIT_32(3)
428	/** Can use CPUID[0xb].EDX and translate the result via aiCpuFromApicId. */
429	#define SUPGIPGETCPU_APIC_ID_EXT_0B RT_BIT_32(4)
430	/** Can use CPUID[0x8000001e].EAX and translate the result via aiCpuFromApicId. */
431	#define SUPGIPGETCPU_APIC_ID_EXT_8000001E RT_BIT_32(5)
432	/** @} */
433
434	/** @def SUPGIP_MAX_CPU_GROUPS
435	* Maximum number of CPU groups. */
436	#if RTCPUSET_MAX_CPUS >= 256
437	# define SUPGIP_MAX_CPU_GROUPS 256
438	#else
439	# define SUPGIP_MAX_CPU_GROUPS RTCPUSET_MAX_CPUS
440	#endif
441
442	/**
443	* Global Information Page.
444	*
445	* This page contains useful information and can be mapped into any
446	* process or VM. It can be accessed thru the g_pSUPGlobalInfoPage
447	* pointer when a session is open.
448	*/
449	typedef struct SUPGLOBALINFOPAGE
450	{
451	/** Magic (SUPGLOBALINFOPAGE_MAGIC). */
452	uint32_t u32Magic;
453	/** The GIP version. */
454	uint32_t u32Version;
455
456	/** The GIP update mode, see SUPGIPMODE. */
457	uint32_t u32Mode;
458	/** The number of entries in the CPU table.
459	* (This can work as RTMpGetArraySize().) */
460	uint16_t cCpus;
461	/** The size of the GIP in pages. */
462	uint16_t cPages;
463	/** The update frequency of the of the NanoTS. */
464	volatile uint32_t u32UpdateHz;
465	/** The update interval in nanoseconds. (10^9 / u32UpdateHz) */
466	volatile uint32_t u32UpdateIntervalNS;
467	/** The timestamp of the last time we update the update frequency. */
468	volatile uint64_t u64NanoTSLastUpdateHz;
469	/** The TSC frequency of the system. */
470	uint64_t u64CpuHz;
471	/** The number of CPUs that are online. */
472	volatile uint16_t cOnlineCpus;
473	/** The number of CPUs present in the system. */
474	volatile uint16_t cPresentCpus;
475	/** The highest number of CPUs possible. */
476	uint16_t cPossibleCpus;
477	/** The highest number of CPU groups possible. */
478	uint16_t cPossibleCpuGroups;
479	/** The max CPU ID (RTMpGetMaxCpuId). */
480	RTCPUID idCpuMax;
481	/** The applicability of SUPGIPCPU::i64TscDelta. */
482	SUPGIPUSETSCDELTA enmUseTscDelta;
483	/** Mask of SUPGIPGETCPU_XXX values that indicates different ways that aCPU
484	* can be accessed from ring-3 and raw-mode context. */
485	uint32_t fGetGipCpu;
486	/** GIP flags, see SUPGIP_FLAGS_XXX. */
487	volatile uint32_t fFlags;
488	/** The set of online CPUs. */
489	RTCPUSET OnlineCpuSet;
490	#if RTCPUSET_MAX_CPUS < 1024
491	uint64_t abOnlineCpuSetPadding[(1024 - RTCPUSET_MAX_CPUS) / 64];
492	#endif
493	/** The set of present CPUs. */
494	RTCPUSET PresentCpuSet;
495	#if RTCPUSET_MAX_CPUS < 1024
496	uint64_t abPresentCpuSetPadding[(1024 - RTCPUSET_MAX_CPUS) / 64];
497	#endif
498	/** The set of possible CPUs. */
499	RTCPUSET PossibleCpuSet;
500	#if RTCPUSET_MAX_CPUS < 1024
501	uint64_t abPossibleCpuSetPadding[(1024 - RTCPUSET_MAX_CPUS) / 64];
502	#endif
503
504	/** Padding / reserved space for future data. */
505	uint32_t au32Padding1[48];
506
507	/** Table indexed by the CPU APIC ID to get the CPU table index. */
508	uint16_t aiCpuFromApicId[4096];
509	/** CPU set index to CPU table index. */
510	uint16_t aiCpuFromCpuSetIdx[1024];
511	/** Table indexed by CPU group to containing offsets to SUPGIPCPUGROUP
512	* structures, invalid entries are set to UINT32_MAX. The offsets are relative
513	* to the start of this structure.
514	* @note Windows only. The other hosts sets all entries to UINT32_MAX! */
515	uint32_t aoffCpuGroup[SUPGIP_MAX_CPU_GROUPS];
516
517	/** Array of per-cpu data.
518	* This is index by ApicId via the aiCpuFromApicId table.
519	*
520	* The clock and frequency information is updated for all CPUs if @c u32Mode
521	* is SUPGIPMODE_ASYNC_TSC. If @c u32Mode is SUPGIPMODE_SYNC_TSC only the first
522	* entry is updated. If @c u32Mode is SUPGIPMODE_SYNC_TSC the TSC frequency in
523	* @c u64CpuHz is copied to all CPUs. */
524	SUPGIPCPU aCPUs[1];
525	} SUPGLOBALINFOPAGE;
526	AssertCompileMemberAlignment(SUPGLOBALINFOPAGE, u64NanoTSLastUpdateHz, 8);
527	AssertCompileMemberAlignment(SUPGLOBALINFOPAGE, OnlineCpuSet, 64);
528	AssertCompileMemberAlignment(SUPGLOBALINFOPAGE, PresentCpuSet, 64);
529	AssertCompileMemberAlignment(SUPGLOBALINFOPAGE, PossibleCpuSet, 64);
530	#if defined(RT_ARCH_SPARC) \|\| defined(RT_ARCH_SPARC64) /* ?? needed ?? */
531	AssertCompileMemberAlignment(SUPGLOBALINFOPAGE, aCPUs, 32);
532	#else
533	AssertCompileMemberAlignment(SUPGLOBALINFOPAGE, aCPUs, 128);
534	#endif
535
536	/** Pointer to the global info page.
537	* @remark there is no const version of this typedef, see g_pSUPGlobalInfoPage for details. */
538	typedef SUPGLOBALINFOPAGE *PSUPGLOBALINFOPAGE;
539
540
541	/** The value of the SUPGLOBALINFOPAGE::u32Magic field. (Soryo Fuyumi) */
542	#define SUPGLOBALINFOPAGE_MAGIC 0x19590106
543	/** The GIP version.
544	* Upper 16 bits is the major version. Major version is only changed with
545	* incompatible changes in the GIP. */
546	#define SUPGLOBALINFOPAGE_VERSION 0x000a0000
547
548	/**
549	* SUPGLOBALINFOPAGE::u32Mode values.
550	*/
551	typedef enum SUPGIPMODE
552	{
553	/** The usual invalid null entry. */
554	SUPGIPMODE_INVALID = 0,
555	/** The TSC of the cores and cpus in the system is in sync. */
556	SUPGIPMODE_SYNC_TSC,
557	/** Each core has it's own TSC. */
558	SUPGIPMODE_ASYNC_TSC,
559	/** The TSC of the cores are non-stop and have a constant frequency. */
560	SUPGIPMODE_INVARIANT_TSC,
561	/** End of valid GIP mode values (exclusive). */
562	SUPGIPMODE_END,
563	/** The usual 32-bit hack. */
564	SUPGIPMODE_32BIT_HACK = 0x7fffffff
565	} SUPGIPMODE;
566
567	/** Pointer to the Global Information Page.
568	*
569	* This pointer is valid as long as SUPLib has a open session. Anyone using
570	* the page must treat this pointer as highly volatile and not trust it beyond
571	* one transaction.
572	*
573	* @remark The GIP page is read-only to everyone but the support driver and
574	* is actually mapped read only everywhere but in ring-0. However
575	* it is not marked 'const' as this might confuse compilers into
576	* thinking that values doesn't change even if members are marked
577	* as volatile. Thus, there is no PCSUPGLOBALINFOPAGE type.
578	*/
579	#if defined(IN_SUP_R3) \|\| defined(IN_SUP_R0)
580	extern DECLEXPORT(PSUPGLOBALINFOPAGE) g_pSUPGlobalInfoPage;
581
582	#elif !defined(IN_RING0) \|\| defined(RT_OS_WINDOWS) \|\| defined(RT_OS_SOLARIS)
583	extern DECLIMPORT(PSUPGLOBALINFOPAGE) g_pSUPGlobalInfoPage;
584
585	#else /* IN_RING0 && !RT_OS_WINDOWS */
586	# if !defined(__GNUC__) \|\| defined(RT_OS_DARWIN) \|\| !defined(RT_ARCH_AMD64)
587	# define g_pSUPGlobalInfoPage (&g_SUPGlobalInfoPage)
588	# else
589	# define g_pSUPGlobalInfoPage (SUPGetGIPHlp())
590	/** Workaround for ELF+GCC problem on 64-bit hosts.
591	* (GCC emits a mov with a R_X86_64_32 reloc, we need R_X86_64_64.) */
592	DECLINLINE(PSUPGLOBALINFOPAGE) SUPGetGIPHlp(void)
593	{
594	PSUPGLOBALINFOPAGE pGIP;
595	__asm__ __volatile__ ("movabs $g_SUPGlobalInfoPage,%0\n\t"
596	: "=a" (pGIP));
597	return pGIP;
598	}
599	# endif
600	/** The GIP.
601	* We save a level of indirection by exporting the GIP instead of a variable
602	* pointing to it. */
603	extern DECLIMPORT(SUPGLOBALINFOPAGE) g_SUPGlobalInfoPage;
604	#endif
605
606	/**
607	* Gets the GIP pointer.
608	*
609	* @returns Pointer to the GIP or NULL.
610	*/
611	SUPDECL(PSUPGLOBALINFOPAGE) SUPGetGIP(void);
612
613	/** @name SUPGIP_FLAGS_XXX - SUPR3GipSetFlags flags.
614	* @{ */
615	/** Enable GIP test mode. */
616	#define SUPGIP_FLAGS_TESTING_ENABLE RT_BIT_32(0)
617	/** Valid mask of flags that can be set through the ioctl. */
618	#define SUPGIP_FLAGS_VALID_MASK RT_BIT_32(0)
619	/** GIP test mode needs to be checked (e.g. when enabled or being disabled). */
620	#define SUPGIP_FLAGS_TESTING RT_BIT_32(24)
621	/** Prepare to start GIP test mode. */
622	#define SUPGIP_FLAGS_TESTING_START RT_BIT_32(25)
623	/** Prepare to stop GIP test mode. */
624	#define SUPGIP_FLAGS_TESTING_STOP RT_BIT_32(26)
625	/** @} */
626
627	/** @internal */
628	SUPDECL(uint64_t) SUPGetCpuHzFromGipForAsyncMode(PSUPGLOBALINFOPAGE pGip);
629	SUPDECL(bool) SUPIsTscFreqCompatible(uint64_t uCpuHz, uint64_t *puGipCpuHz, bool fRelax);
630	SUPDECL(bool) SUPIsTscFreqCompatibleEx(uint64_t uBaseCpuHz, uint64_t uCpuHz, bool fRelax);
631
632
633	/**
634	* Gets the TSC frequency of the calling CPU.
635	*
636	* @returns TSC frequency, UINT64_MAX on failure (asserted).
637	* @param pGip The GIP pointer.
638	*/
639	DECLINLINE(uint64_t) SUPGetCpuHzFromGip(PSUPGLOBALINFOPAGE pGip)
640	{
641	if (RT_LIKELY( pGip
642	&& pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC))
643	{
644	switch (pGip->u32Mode)
645	{
646	case SUPGIPMODE_INVARIANT_TSC:
647	case SUPGIPMODE_SYNC_TSC:
648	return pGip->aCPUs[0].u64CpuHz;
649	case SUPGIPMODE_ASYNC_TSC:
650	return SUPGetCpuHzFromGipForAsyncMode(pGip);
651	default: break; /* shut up gcc */
652	}
653	}
654	AssertFailed();
655	return UINT64_MAX;
656	}
657
658
659	/**
660	* Gets the TSC frequency of the specified CPU.
661	*
662	* @returns TSC frequency, UINT64_MAX on failure (asserted).
663	* @param pGip The GIP pointer.
664	* @param iCpuSet The CPU set index of the CPU in question.
665	*/
666	DECLINLINE(uint64_t) SUPGetCpuHzFromGipBySetIndex(PSUPGLOBALINFOPAGE pGip, uint32_t iCpuSet)
667	{
668	if (RT_LIKELY( pGip
669	&& pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC))
670	{
671	switch (pGip->u32Mode)
672	{
673	case SUPGIPMODE_INVARIANT_TSC:
674	case SUPGIPMODE_SYNC_TSC:
675	return pGip->aCPUs[0].u64CpuHz;
676	case SUPGIPMODE_ASYNC_TSC:
677	if (RT_LIKELY(iCpuSet < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx)))
678	{
679	uint16_t iCpu = pGip->aiCpuFromCpuSetIdx[iCpuSet];
680	if (RT_LIKELY(iCpu < pGip->cCpus))
681	return pGip->aCPUs[iCpu].u64CpuHz;
682	}
683	break;
684	default: break; /* shut up gcc */
685	}
686	}
687	AssertFailed();
688	return UINT64_MAX;
689	}
690
691
692	/**
693	* Gets the pointer to the per CPU data for a CPU given by its set index.
694	*
695	* @returns Pointer to the corresponding per CPU structure, or NULL if invalid.
696	* @param pGip The GIP pointer.
697	* @param iCpuSet The CPU set index of the CPU which we want.
698	*/
699	DECLINLINE(PSUPGIPCPU) SUPGetGipCpuBySetIndex(PSUPGLOBALINFOPAGE pGip, uint32_t iCpuSet)
700	{
701	if (RT_LIKELY( pGip
702	&& pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC))
703	{
704	if (RT_LIKELY(iCpuSet < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx)))
705	{
706	uint16_t iCpu = pGip->aiCpuFromCpuSetIdx[iCpuSet];
707	if (RT_LIKELY(iCpu < pGip->cCpus))
708	return &pGip->aCPUs[iCpu];
709	}
710	}
711	return NULL;
712	}
713
714
715	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
716
717	/** @internal */
718	SUPDECL(uint64_t) SUPReadTscWithDelta(PSUPGLOBALINFOPAGE pGip);
719
720	/**
721	* Read the host TSC value and applies the TSC delta if appropriate.
722	*
723	* @returns the TSC value.
724	* @remarks Requires GIP to be initialized and valid.
725	*/
726	DECLINLINE(uint64_t) SUPReadTsc(void)
727	{
728	PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
729	if (pGip->enmUseTscDelta <= SUPGIPUSETSCDELTA_ROUGHLY_ZERO)
730	return ASMReadTSC();
731	return SUPReadTscWithDelta(pGip);
732	}
733
734	#endif /* X86 \|\| AMD64 */
735
736	/** @internal */
737	SUPDECL(int64_t) SUPGetTscDeltaSlow(PSUPGLOBALINFOPAGE pGip);
738
739	/**
740	* Gets the TSC delta for the current CPU.
741	*
742	* @returns The TSC delta value (will not return the special INT64_MAX value).
743	* @remarks Requires GIP to be initialized and valid.
744	*/
745	DECLINLINE(int64_t) SUPGetTscDelta(void)
746	{
747	PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
748	if (pGip->enmUseTscDelta <= SUPGIPUSETSCDELTA_ROUGHLY_ZERO)
749	return 0;
750	return SUPGetTscDeltaSlow(pGip);
751	}
752
753
754	/**
755	* Gets the TSC delta for a given CPU.
756	*
757	* @returns The TSC delta value (will not return the special INT64_MAX value).
758	* @param iCpuSet The CPU set index of the CPU which TSC delta we want.
759	* @remarks Requires GIP to be initialized and valid.
760	*/
761	DECLINLINE(int64_t) SUPGetTscDeltaByCpuSetIndex(uint32_t iCpuSet)
762	{
763	PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
764	if (pGip->enmUseTscDelta <= SUPGIPUSETSCDELTA_ROUGHLY_ZERO)
765	return 0;
766	if (RT_LIKELY(iCpuSet < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx)))
767	{
768	uint16_t iCpu = pGip->aiCpuFromCpuSetIdx[iCpuSet];
769	if (RT_LIKELY(iCpu < pGip->cCpus))
770	{
771	int64_t iTscDelta = pGip->aCPUs[iCpu].i64TSCDelta;
772	if (iTscDelta != INT64_MAX)
773	return iTscDelta;
774	}
775	}
776	AssertFailed();
777	return 0;
778	}
779
780
781	/**
782	* Checks if the TSC delta is available for a given CPU (if TSC-deltas are
783	* relevant).
784	*
785	* @returns true if it's okay to read the TSC, false otherwise.
786	*
787	* @param iCpuSet The CPU set index of the CPU which TSC delta we check.
788	* @remarks Requires GIP to be initialized and valid.
789	*/
790	DECLINLINE(bool) SUPIsTscDeltaAvailableForCpuSetIndex(uint32_t iCpuSet)
791	{
792	PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
793	if (pGip->enmUseTscDelta <= SUPGIPUSETSCDELTA_ROUGHLY_ZERO)
794	return true;
795	if (RT_LIKELY(iCpuSet < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx)))
796	{
797	uint16_t iCpu = pGip->aiCpuFromCpuSetIdx[iCpuSet];
798	if (RT_LIKELY(iCpu < pGip->cCpus))
799	{
800	int64_t iTscDelta = pGip->aCPUs[iCpu].i64TSCDelta;
801	if (iTscDelta != INT64_MAX)
802	return true;
803	}
804	}
805	return false;
806	}
807
808
809	/**
810	* Gets the descriptive GIP mode name.
811	*
812	* @returns The name.
813	* @param pGip Pointer to the GIP.
814	*/
815	DECLINLINE(const char *) SUPGetGIPModeName(PSUPGLOBALINFOPAGE pGip)
816	{
817	AssertReturn(pGip, NULL);
818	switch (pGip->u32Mode)
819	{
820	case SUPGIPMODE_INVARIANT_TSC: return "Invariant";
821	case SUPGIPMODE_SYNC_TSC: return "Synchronous";
822	case SUPGIPMODE_ASYNC_TSC: return "Asynchronous";
823	case SUPGIPMODE_INVALID: return "Invalid";
824	default: return "???";
825	}
826	}
827
828
829	/**
830	* Gets the descriptive TSC-delta enum name.
831	*
832	* @returns The name.
833	* @param pGip Pointer to the GIP.
834	*/
835	DECLINLINE(const char *) SUPGetGIPTscDeltaModeName(PSUPGLOBALINFOPAGE pGip)
836	{
837	AssertReturn(pGip, NULL);
838	switch (pGip->enmUseTscDelta)
839	{
840	case SUPGIPUSETSCDELTA_NOT_APPLICABLE: return "Not Applicable";
841	case SUPGIPUSETSCDELTA_ZERO_CLAIMED: return "Zero Claimed";
842	case SUPGIPUSETSCDELTA_PRACTICALLY_ZERO: return "Practically Zero";
843	case SUPGIPUSETSCDELTA_ROUGHLY_ZERO: return "Roughly Zero";
844	case SUPGIPUSETSCDELTA_NOT_ZERO: return "Not Zero";
845	default: return "???";
846	}
847	}
848
849
850	/**
851	* Request for generic VMMR0Entry calls.
852	*/
853	typedef struct SUPVMMR0REQHDR
854	{
855	/** The magic. (SUPVMMR0REQHDR_MAGIC) */
856	uint32_t u32Magic;
857	/** The size of the request. */
858	uint32_t cbReq;
859	} SUPVMMR0REQHDR;
860	/** Pointer to a ring-0 request header. */
861	typedef SUPVMMR0REQHDR *PSUPVMMR0REQHDR;
862	/** the SUPVMMR0REQHDR::u32Magic value (Ethan Iverson - The Bad Plus). */
863	#define SUPVMMR0REQHDR_MAGIC UINT32_C(0x19730211)
864
865
866	/** For the fast ioctl path.
867	* @{
868	*/
869	/** @see VMMR0_DO_HM_RUN. */
870	#define SUP_VMMR0_DO_HM_RUN 0
871	/** @see VMMR0_DO_NEM_RUN */
872	#define SUP_VMMR0_DO_NEM_RUN 1
873	/** @see VMMR0_DO_NOP */
874	#define SUP_VMMR0_DO_NOP 2
875	/** @} */
876
877	/** SUPR3QueryVTCaps capability flags.
878	* @{
879	*/
880	/** AMD-V support. */
881	#define SUPVTCAPS_AMD_V RT_BIT(0)
882	/** VT-x support. */
883	#define SUPVTCAPS_VT_X RT_BIT(1)
884	/** Nested paging is supported. */
885	#define SUPVTCAPS_NESTED_PAGING RT_BIT(2)
886	/** VT-x: Unrestricted guest execution is supported. */
887	#define SUPVTCAPS_VTX_UNRESTRICTED_GUEST RT_BIT(3)
888	/** VT-x: VMCS shadowing is supported. */
889	#define SUPVTCAPS_VTX_VMCS_SHADOWING RT_BIT(4)
890	/** AMD-V: Virtualized VMSAVE/VMLOAD is supported. */
891	#define SUPVTCAPS_AMDV_VIRT_VMSAVE_VMLOAD RT_BIT(5)
892	/** @} */
893
894	/**
895	* Request for generic FNSUPR0SERVICEREQHANDLER calls.
896	*/
897	typedef struct SUPR0SERVICEREQHDR
898	{
899	/** The magic. (SUPR0SERVICEREQHDR_MAGIC) */
900	uint32_t u32Magic;
901	/** The size of the request. */
902	uint32_t cbReq;
903	} SUPR0SERVICEREQHDR;
904	/** Pointer to a ring-0 service request header. */
905	typedef SUPR0SERVICEREQHDR *PSUPR0SERVICEREQHDR;
906	/** the SUPVMMR0REQHDR::u32Magic value (Esbjoern Svensson - E.S.P.). */
907	#define SUPR0SERVICEREQHDR_MAGIC UINT32_C(0x19640416)
908
909
910	/**
911	* Creates a single release event semaphore.
912	*
913	* @returns VBox status code.
914	* @param pSession The session handle of the caller.
915	* @param phEvent Where to return the handle to the event semaphore.
916	*/
917	SUPDECL(int) SUPSemEventCreate(PSUPDRVSESSION pSession, PSUPSEMEVENT phEvent);
918
919	/**
920	* Closes a single release event semaphore handle.
921	*
922	* @returns VBox status code.
923	* @retval VINF_OBJECT_DESTROYED if the semaphore was destroyed.
924	* @retval VINF_SUCCESS if the handle was successfully closed but the semaphore
925	* object remained alive because of other references.
926	*
927	* @param pSession The session handle of the caller.
928	* @param hEvent The handle. Nil is quietly ignored.
929	*/
930	SUPDECL(int) SUPSemEventClose(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent);
931
932	/**
933	* Signals a single release event semaphore.
934	*
935	* @returns VBox status code.
936	* @param pSession The session handle of the caller.
937	* @param hEvent The semaphore handle.
938	*/
939	SUPDECL(int) SUPSemEventSignal(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent);
940
941	#ifdef IN_RING0
942	/**
943	* Waits on a single release event semaphore, not interruptible.
944	*
945	* @returns VBox status code.
946	* @param pSession The session handle of the caller.
947	* @param hEvent The semaphore handle.
948	* @param cMillies The number of milliseconds to wait.
949	* @remarks Not available in ring-3.
950	*/
951	SUPDECL(int) SUPSemEventWait(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint32_t cMillies);
952	#endif
953
954	/**
955	* Waits on a single release event semaphore, interruptible.
956	*
957	* @returns VBox status code.
958	* @param pSession The session handle of the caller.
959	* @param hEvent The semaphore handle.
960	* @param cMillies The number of milliseconds to wait.
961	*/
962	SUPDECL(int) SUPSemEventWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint32_t cMillies);
963
964	/**
965	* Waits on a single release event semaphore, interruptible.
966	*
967	* @returns VBox status code.
968	* @param pSession The session handle of the caller.
969	* @param hEvent The semaphore handle.
970	* @param uNsTimeout The deadline given on the RTTimeNanoTS() clock.
971	*/
972	SUPDECL(int) SUPSemEventWaitNsAbsIntr(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint64_t uNsTimeout);
973
974	/**
975	* Waits on a single release event semaphore, interruptible.
976	*
977	* @returns VBox status code.
978	* @param pSession The session handle of the caller.
979	* @param hEvent The semaphore handle.
980	* @param cNsTimeout The number of nanoseconds to wait.
981	*/
982	SUPDECL(int) SUPSemEventWaitNsRelIntr(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint64_t cNsTimeout);
983
984	/**
985	* Gets the best timeout resolution that SUPSemEventWaitNsAbsIntr and
986	* SUPSemEventWaitNsAbsIntr can do.
987	*
988	* @returns The resolution in nanoseconds.
989	* @param pSession The session handle of the caller.
990	*/
991	SUPDECL(uint32_t) SUPSemEventGetResolution(PSUPDRVSESSION pSession);
992
993
994	/**
995	* Creates a multiple release event semaphore.
996	*
997	* @returns VBox status code.
998	* @param pSession The session handle of the caller.
999	* @param phEventMulti Where to return the handle to the event semaphore.
1000	*/
1001	SUPDECL(int) SUPSemEventMultiCreate(PSUPDRVSESSION pSession, PSUPSEMEVENTMULTI phEventMulti);
1002
1003	/**
1004	* Closes a multiple release event semaphore handle.
1005	*
1006	* @returns VBox status code.
1007	* @retval VINF_OBJECT_DESTROYED if the semaphore was destroyed.
1008	* @retval VINF_SUCCESS if the handle was successfully closed but the semaphore
1009	* object remained alive because of other references.
1010	*
1011	* @param pSession The session handle of the caller.
1012	* @param hEventMulti The handle. Nil is quietly ignored.
1013	*/
1014	SUPDECL(int) SUPSemEventMultiClose(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti);
1015
1016	/**
1017	* Signals a multiple release event semaphore.
1018	*
1019	* @returns VBox status code.
1020	* @param pSession The session handle of the caller.
1021	* @param hEventMulti The semaphore handle.
1022	*/
1023	SUPDECL(int) SUPSemEventMultiSignal(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti);
1024
1025	/**
1026	* Resets a multiple release event semaphore.
1027	*
1028	* @returns VBox status code.
1029	* @param pSession The session handle of the caller.
1030	* @param hEventMulti The semaphore handle.
1031	*/
1032	SUPDECL(int) SUPSemEventMultiReset(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti);
1033
1034	#ifdef IN_RING0
1035	/**
1036	* Waits on a multiple release event semaphore, not interruptible.
1037	*
1038	* @returns VBox status code.
1039	* @param pSession The session handle of the caller.
1040	* @param hEventMulti The semaphore handle.
1041	* @param cMillies The number of milliseconds to wait.
1042	* @remarks Not available in ring-3.
1043	*/
1044	SUPDECL(int) SUPSemEventMultiWait(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint32_t cMillies);
1045	#endif
1046
1047	/**
1048	* Waits on a multiple release event semaphore, interruptible.
1049	*
1050	* @returns VBox status code.
1051	* @param pSession The session handle of the caller.
1052	* @param hEventMulti The semaphore handle.
1053	* @param cMillies The number of milliseconds to wait.
1054	*/
1055	SUPDECL(int) SUPSemEventMultiWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint32_t cMillies);
1056
1057	/**
1058	* Waits on a multiple release event semaphore, interruptible.
1059	*
1060	* @returns VBox status code.
1061	* @param pSession The session handle of the caller.
1062	* @param hEventMulti The semaphore handle.
1063	* @param uNsTimeout The deadline given on the RTTimeNanoTS() clock.
1064	*/
1065	SUPDECL(int) SUPSemEventMultiWaitNsAbsIntr(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint64_t uNsTimeout);
1066
1067	/**
1068	* Waits on a multiple release event semaphore, interruptible.
1069	*
1070	* @returns VBox status code.
1071	* @param pSession The session handle of the caller.
1072	* @param hEventMulti The semaphore handle.
1073	* @param cNsTimeout The number of nanoseconds to wait.
1074	*/
1075	SUPDECL(int) SUPSemEventMultiWaitNsRelIntr(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint64_t cNsTimeout);
1076
1077	/**
1078	* Gets the best timeout resolution that SUPSemEventMultiWaitNsAbsIntr and
1079	* SUPSemEventMultiWaitNsRelIntr can do.
1080	*
1081	* @returns The resolution in nanoseconds.
1082	* @param pSession The session handle of the caller.
1083	*/
1084	SUPDECL(uint32_t) SUPSemEventMultiGetResolution(PSUPDRVSESSION pSession);
1085
1086
1087	#ifdef IN_RING3
1088
1089	/** @defgroup grp_sup_r3 SUP Host Context Ring-3 API
1090	* @{
1091	*/
1092
1093	/**
1094	* Installs the support library.
1095	*
1096	* @returns VBox status code.
1097	*/
1098	SUPR3DECL(int) SUPR3Install(void);
1099
1100	/**
1101	* Uninstalls the support library.
1102	*
1103	* @returns VBox status code.
1104	*/
1105	SUPR3DECL(int) SUPR3Uninstall(void);
1106
1107	/**
1108	* Trusted main entry point.
1109	*
1110	* This is exported as "TrustedMain" by the dynamic libraries which contains the
1111	* "real" application binary for which the hardened stub is built. The entry
1112	* point is invoked upon successful initialization of the support library and
1113	* runtime.
1114	*
1115	* @returns main kind of exit code.
1116	* @param argc The argument count.
1117	* @param argv The argument vector.
1118	* @param envp The environment vector.
1119	*/
1120	typedef DECLCALLBACKTYPE(int, FNSUPTRUSTEDMAIN,(int argc, char argv, char envp));
1121	/** Pointer to FNSUPTRUSTEDMAIN(). */
1122	typedef FNSUPTRUSTEDMAIN *PFNSUPTRUSTEDMAIN;
1123
1124	/** Which operation failed. */
1125	typedef enum SUPINITOP
1126	{
1127	/** Invalid. */
1128	kSupInitOp_Invalid = 0,
1129	/** Installation integrity error. */
1130	kSupInitOp_Integrity,
1131	/** Setuid related. */
1132	kSupInitOp_RootCheck,
1133	/** Driver related. */
1134	kSupInitOp_Driver,
1135	/** IPRT init related. */
1136	kSupInitOp_IPRT,
1137	/** Miscellaneous. */
1138	kSupInitOp_Misc,
1139	/** Place holder. */
1140	kSupInitOp_End
1141	} SUPINITOP;
1142
1143	/**
1144	* Trusted error entry point, optional.
1145	*
1146	* This is exported as "TrustedError" by the dynamic libraries which contains
1147	* the "real" application binary for which the hardened stub is built. The
1148	* hardened main() must specify SUPSECMAIN_FLAGS_TRUSTED_ERROR when calling
1149	* SUPR3HardenedMain.
1150	*
1151	* @param pszWhere Where the error occurred (function name).
1152	* @param enmWhat Which operation went wrong.
1153	* @param rc The status code.
1154	* @param pszMsgFmt Error message format string.
1155	* @param va The message format arguments.
1156	*/
1157	typedef DECLCALLBACKTYPE(void, FNSUPTRUSTEDERROR,(const char *pszWhere, SUPINITOP enmWhat, int rc,
1158	const char *pszMsgFmt, va_list va)) RT_IPRT_FORMAT_ATTR(4, 0);
1159	/** Pointer to FNSUPTRUSTEDERROR. */
1160	typedef FNSUPTRUSTEDERROR *PFNSUPTRUSTEDERROR;
1161
1162	/**
1163	* Secure main.
1164	*
1165	* This is used for the set-user-ID-on-execute binaries on unixy systems
1166	* and when using the open-vboxdrv-via-root-service setup on Windows.
1167	*
1168	* This function will perform the integrity checks of the VirtualBox
1169	* installation, open the support driver, open the root service (later),
1170	* and load the DLL corresponding to \a pszProgName and execute its main
1171	* function.
1172	*
1173	* @returns Return code appropriate for main().
1174	*
1175	* @param pszProgName The program name. This will be used to figure out which
1176	* DLL/SO/DYLIB to load and execute.
1177	* @param fFlags Flags.
1178	* @param argc The argument count.
1179	* @param argv The argument vector.
1180	* @param envp The environment vector.
1181	*/
1182	DECLHIDDEN(int) SUPR3HardenedMain(const char pszProgName, uint32_t fFlags, int argc, char argv, char *envp);
1183
1184	/** @name SUPR3HardenedMain flags.
1185	* @{ */
1186	/** Don't open the device. (Intended for VirtualBox without -startvm.) */
1187	#define SUPSECMAIN_FLAGS_DONT_OPEN_DEV RT_BIT_32(0)
1188	/** The hardened DLL has a "TrustedError" function (see FNSUPTRUSTEDERROR). */
1189	#define SUPSECMAIN_FLAGS_TRUSTED_ERROR RT_BIT_32(1)
1190	/** Hack for making VirtualBoxVM use VirtualBox.dylib on Mac OS X.
1191	* @note Not used since 6.0 */
1192	#define SUPSECMAIN_FLAGS_OSX_VM_APP RT_BIT_32(2)
1193	/** Program binary location mask. */
1194	#define SUPSECMAIN_FLAGS_LOC_MASK UINT32_C(0x00000030)
1195	/** Default binary location is the application binary directory. Does
1196	* not need to be given explicitly (it's 0). */
1197	#define SUPSECMAIN_FLAGS_LOC_APP_BIN UINT32_C(0x00000000)
1198	/** The binary is located in the testcase directory instead of the
1199	* default application binary directory. */
1200	#define SUPSECMAIN_FLAGS_LOC_TESTCASE UINT32_C(0x00000010)
1201	/** The binary is located in a nested application bundle under Resources/ in the
1202	* main Mac OS X application (think Resources/VirtualBoxVM.app). */
1203	#define SUPSECMAIN_FLAGS_LOC_OSX_HLP_APP UINT32_C(0x00000020)
1204	/** The first process.
1205	* @internal */
1206	#define SUPSECMAIN_FLAGS_FIRST_PROCESS UINT32_C(0x00000100)
1207	/** @} */
1208
1209	/**
1210	* Initializes the support library.
1211	*
1212	* Each successful call to SUPR3Init() or SUPR3InitEx must be countered by a
1213	* call to SUPR3Term(false).
1214	*
1215	* @returns VBox status code.
1216	* @param ppSession Where to store the session handle. Defaults to NULL.
1217	*/
1218	SUPR3DECL(int) SUPR3Init(PSUPDRVSESSION *ppSession);
1219
1220	/**
1221	* Initializes the support library, extended version.
1222	*
1223	* Each successful call to SUPR3Init() or SUPR3InitEx must be countered by a
1224	* call to SUPR3Term(false).
1225	*
1226	* @returns VBox status code.
1227	* @param fUnrestricted The desired access.
1228	* @param ppSession Where to store the session handle. Defaults to NULL.
1229	*/
1230	SUPR3DECL(int) SUPR3InitEx(bool fUnrestricted, PSUPDRVSESSION *ppSession);
1231
1232	/**
1233	* Terminates the support library.
1234	*
1235	* @returns VBox status code.
1236	* @param fForced Forced termination. This means to ignore the
1237	* init call count and just terminated.
1238	*/
1239	#ifdef __cplusplus
1240	SUPR3DECL(int) SUPR3Term(bool fForced = false);
1241	#else
1242	SUPR3DECL(int) SUPR3Term(int fForced);
1243	#endif
1244
1245	/**
1246	* Sets the ring-0 VM handle for use with fast IOCtls.
1247	*
1248	* @returns VBox status code.
1249	* @param pVMR0 The ring-0 VM handle.
1250	* NIL_RTR0PTR can be used to unset the handle when the
1251	* VM is about to be destroyed.
1252	*/
1253	SUPR3DECL(int) SUPR3SetVMForFastIOCtl(PVMR0 pVMR0);
1254
1255	/**
1256	* Calls the HC R0 VMM entry point.
1257	* See VMMR0Entry() for more details.
1258	*
1259	* @returns error code specific to uFunction.
1260	* @param pVMR0 Pointer to the Ring-0 (Host Context) mapping of the VM structure.
1261	* @param idCpu The virtual CPU ID.
1262	* @param uOperation Operation to execute.
1263	* @param pvArg Argument.
1264	*/
1265	SUPR3DECL(int) SUPR3CallVMMR0(PVMR0 pVMR0, VMCPUID idCpu, unsigned uOperation, void *pvArg);
1266
1267	/**
1268	* Variant of SUPR3CallVMMR0, except that this takes the fast ioclt path
1269	* regardsless of compile-time defaults.
1270	*
1271	* @returns VBox status code.
1272	* @param pVMR0 The ring-0 VM handle.
1273	* @param uOperation The operation; only the SUP_VMMR0_DO_* ones are valid.
1274	* @param idCpu The virtual CPU ID.
1275	*/
1276	SUPR3DECL(int) SUPR3CallVMMR0Fast(PVMR0 pVMR0, unsigned uOperation, VMCPUID idCpu);
1277
1278	/**
1279	* Calls the HC R0 VMM entry point, in a safer but slower manner than
1280	* SUPR3CallVMMR0. When entering using this call the R0 components can call
1281	* into the host kernel (i.e. use the SUPR0 and RT APIs).
1282	*
1283	* See VMMR0Entry() for more details.
1284	*
1285	* @returns error code specific to uFunction.
1286	* @param pVMR0 Pointer to the Ring-0 (Host Context) mapping of the VM structure.
1287	* @param idCpu The virtual CPU ID.
1288	* @param uOperation Operation to execute.
1289	* @param u64Arg Constant argument.
1290	* @param pReqHdr Pointer to a request header. Optional.
1291	* This will be copied in and out of kernel space. There currently is a size
1292	* limit on this, just below 4KB.
1293	*/
1294	SUPR3DECL(int) SUPR3CallVMMR0Ex(PVMR0 pVMR0, VMCPUID idCpu, unsigned uOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr);
1295
1296	/**
1297	* Calls a ring-0 service.
1298	*
1299	* The operation and the request packet is specific to the service.
1300	*
1301	* @returns error code specific to uFunction.
1302	* @param pszService The service name.
1303	* @param cchService The length of the service name.
1304	* @param uOperation The request number.
1305	* @param u64Arg Constant argument.
1306	* @param pReqHdr Pointer to a request header. Optional.
1307	* This will be copied in and out of kernel space. There currently is a size
1308	* limit on this, just below 4KB.
1309	*/
1310	SUPR3DECL(int) SUPR3CallR0Service(const char *pszService, size_t cchService, uint32_t uOperation, uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr);
1311
1312	/** Which logger. */
1313	typedef enum SUPLOGGER
1314	{
1315	SUPLOGGER_DEBUG = 1,
1316	SUPLOGGER_RELEASE
1317	} SUPLOGGER;
1318
1319	/**
1320	* Changes the settings of the specified ring-0 logger.
1321	*
1322	* @returns VBox status code.
1323	* @param enmWhich Which logger.
1324	* @param pszFlags The flags settings.
1325	* @param pszGroups The groups settings.
1326	* @param pszDest The destination specificier.
1327	*/
1328	SUPR3DECL(int) SUPR3LoggerSettings(SUPLOGGER enmWhich, const char pszFlags, const char pszGroups, const char *pszDest);
1329
1330	/**
1331	* Creates a ring-0 logger instance.
1332	*
1333	* @returns VBox status code.
1334	* @param enmWhich Which logger to create.
1335	* @param pszFlags The flags settings.
1336	* @param pszGroups The groups settings.
1337	* @param pszDest The destination specificier.
1338	*/
1339	SUPR3DECL(int) SUPR3LoggerCreate(SUPLOGGER enmWhich, const char pszFlags, const char pszGroups, const char *pszDest);
1340
1341	/**
1342	* Destroys a ring-0 logger instance.
1343	*
1344	* @returns VBox status code.
1345	* @param enmWhich Which logger.
1346	*/
1347	SUPR3DECL(int) SUPR3LoggerDestroy(SUPLOGGER enmWhich);
1348
1349	/**
1350	* Queries the paging mode of the host OS.
1351	*
1352	* @returns The paging mode.
1353	*/
1354	SUPR3DECL(SUPPAGINGMODE) SUPR3GetPagingMode(void);
1355
1356	/**
1357	* Allocate zero-filled pages.
1358	*
1359	* Use this to allocate a number of pages suitable for seeding / locking.
1360	* Call SUPR3PageFree() to free the pages once done with them.
1361	*
1362	* @returns VBox status.
1363	* @param cPages Number of pages to allocate.
1364	* @param ppvPages Where to store the base pointer to the allocated pages.
1365	*/
1366	SUPR3DECL(int) SUPR3PageAlloc(size_t cPages, void **ppvPages);
1367
1368	/**
1369	* Frees pages allocated with SUPR3PageAlloc().
1370	*
1371	* @returns VBox status.
1372	* @param pvPages Pointer returned by SUPR3PageAlloc().
1373	* @param cPages Number of pages that was allocated.
1374	*/
1375	SUPR3DECL(int) SUPR3PageFree(void *pvPages, size_t cPages);
1376
1377	/**
1378	* Allocate non-zeroed, locked, pages with user and, optionally, kernel
1379	* mappings.
1380	*
1381	* Use SUPR3PageFreeEx() to free memory allocated with this function.
1382	*
1383	* @returns VBox status code.
1384	* @param cPages The number of pages to allocate.
1385	* @param fFlags Flags, reserved. Must be zero.
1386	* @param ppvPages Where to store the address of the user mapping.
1387	* @param pR0Ptr Where to store the address of the kernel mapping.
1388	* NULL if no kernel mapping is desired.
1389	* @param paPages Where to store the physical addresses of each page.
1390	* Optional.
1391	*/
1392	SUPR3DECL(int) SUPR3PageAllocEx(size_t cPages, uint32_t fFlags, void **ppvPages, PRTR0PTR pR0Ptr, PSUPPAGE paPages);
1393
1394	/**
1395	* Maps a portion of a ring-3 only allocation into kernel space.
1396	*
1397	* @returns VBox status code.
1398	*
1399	* @param pvR3 The address SUPR3PageAllocEx return.
1400	* @param off Offset to start mapping at. Must be page aligned.
1401	* @param cb Number of bytes to map. Must be page aligned.
1402	* @param fFlags Flags, must be zero.
1403	* @param pR0Ptr Where to store the address on success.
1404	*
1405	*/
1406	SUPR3DECL(int) SUPR3PageMapKernel(void *pvR3, uint32_t off, uint32_t cb, uint32_t fFlags, PRTR0PTR pR0Ptr);
1407
1408	/**
1409	* Changes the protection of
1410	*
1411	* @returns VBox status code.
1412	* @retval VERR_NOT_SUPPORTED if the OS doesn't allow us to change page level
1413	* protection. See also RTR0MemObjProtect.
1414	*
1415	* @param pvR3 The ring-3 address SUPR3PageAllocEx returned.
1416	* @param R0Ptr The ring-0 address SUPR3PageAllocEx returned if it
1417	* is desired that the corresponding ring-0 page
1418	* mappings should change protection as well. Pass
1419	* NIL_RTR0PTR if the ring-0 pages should remain
1420	* unaffected.
1421	* @param off Offset to start at which to start chagning the page
1422	* level protection. Must be page aligned.
1423	* @param cb Number of bytes to change. Must be page aligned.
1424	* @param fProt The new page level protection, either a combination
1425	* of RTMEM_PROT_READ, RTMEM_PROT_WRITE and
1426	* RTMEM_PROT_EXEC, or just RTMEM_PROT_NONE.
1427	*/
1428	SUPR3DECL(int) SUPR3PageProtect(void *pvR3, RTR0PTR R0Ptr, uint32_t off, uint32_t cb, uint32_t fProt);
1429
1430	/**
1431	* Free pages allocated by SUPR3PageAllocEx.
1432	*
1433	* @returns VBox status code.
1434	* @param pvPages The address of the user mapping.
1435	* @param cPages The number of pages.
1436	*/
1437	SUPR3DECL(int) SUPR3PageFreeEx(void *pvPages, size_t cPages);
1438
1439	/**
1440	* Allocated memory with page aligned memory with a contiguous and locked physical
1441	* memory backing below 4GB.
1442	*
1443	* @returns Pointer to the allocated memory (virtual address).
1444	* *pHCPhys is set to the physical address of the memory.
1445	* If ppvR0 isn't NULL, *ppvR0 is set to the ring-0 mapping.
1446	* The returned memory must be freed using SUPR3ContFree().
1447	* @returns NULL on failure.
1448	* @param cPages Number of pages to allocate.
1449	* @param pR0Ptr Where to store the ring-0 mapping of the allocation. (optional)
1450	* @param pHCPhys Where to store the physical address of the memory block.
1451	*
1452	* @remark This 2nd version of this API exists because we're not able to map the
1453	* ring-3 mapping executable on WIN64. This is a serious problem in regard to
1454	* the world switchers.
1455	*/
1456	SUPR3DECL(void *) SUPR3ContAlloc(size_t cPages, PRTR0PTR pR0Ptr, PRTHCPHYS pHCPhys);
1457
1458	/**
1459	* Frees memory allocated with SUPR3ContAlloc().
1460	*
1461	* @returns VBox status code.
1462	* @param pv Pointer to the memory block which should be freed.
1463	* @param cPages Number of pages to be freed.
1464	*/
1465	SUPR3DECL(int) SUPR3ContFree(void *pv, size_t cPages);
1466
1467	/**
1468	* Allocated non contiguous physical memory below 4GB.
1469	*
1470	* The memory isn't zeroed.
1471	*
1472	* @returns VBox status code.
1473	* @returns NULL on failure.
1474	* @param cPages Number of pages to allocate.
1475	* @param ppvPages Where to store the pointer to the allocated memory.
1476	* The pointer stored here on success must be passed to
1477	* SUPR3LowFree when the memory should be released.
1478	* @param ppvPagesR0 Where to store the ring-0 pointer to the allocated memory. optional.
1479	* @param paPages Where to store the physical addresses of the individual pages.
1480	*/
1481	SUPR3DECL(int) SUPR3LowAlloc(size_t cPages, void **ppvPages, PRTR0PTR ppvPagesR0, PSUPPAGE paPages);
1482
1483	/**
1484	* Frees memory allocated with SUPR3LowAlloc().
1485	*
1486	* @returns VBox status code.
1487	* @param pv Pointer to the memory block which should be freed.
1488	* @param cPages Number of pages that was allocated.
1489	*/
1490	SUPR3DECL(int) SUPR3LowFree(void *pv, size_t cPages);
1491
1492	/**
1493	* Load a module into R0 HC.
1494	*
1495	* This will verify the file integrity in a similar manner as
1496	* SUPR3HardenedVerifyFile before loading it.
1497	*
1498	* @returns VBox status code.
1499	* @param pszFilename The path to the image file.
1500	* @param pszModule The module name. Max 32 bytes.
1501	* @param ppvImageBase Where to store the image address.
1502	* @param pErrInfo Where to return extended error information.
1503	* Optional.
1504	*/
1505	SUPR3DECL(int) SUPR3LoadModule(const char pszFilename, const char pszModule, void **ppvImageBase, PRTERRINFO pErrInfo);
1506
1507	/**
1508	* Load a module into R0 HC.
1509	*
1510	* This will verify the file integrity in a similar manner as
1511	* SUPR3HardenedVerifyFile before loading it.
1512	*
1513	* @returns VBox status code.
1514	* @param pszFilename The path to the image file.
1515	* @param pszModule The module name. Max 32 bytes.
1516	* @param pszSrvReqHandler The name of the service request handler entry
1517	* point. See FNSUPR0SERVICEREQHANDLER.
1518	* @param ppvImageBase Where to store the image address.
1519	*/
1520	SUPR3DECL(int) SUPR3LoadServiceModule(const char pszFilename, const char pszModule,
1521	const char pszSrvReqHandler, void *ppvImageBase);
1522
1523	/**
1524	* Frees a R0 HC module.
1525	*
1526	* @returns VBox status code.
1527	* @param pvImageBase The base address of the image to free.
1528	* @remark This will not actually 'free' the module, there are of course usage counting.
1529	*/
1530	SUPR3DECL(int) SUPR3FreeModule(void *pvImageBase);
1531
1532	/**
1533	* Lock down the module loader interface.
1534	*
1535	* This will lock down the module loader interface. No new modules can be
1536	* loaded and all loaded modules can no longer be freed.
1537	*
1538	* @returns VBox status code.
1539	* @param pErrInfo Where to return extended error information.
1540	* Optional.
1541	*/
1542	SUPR3DECL(int) SUPR3LockDownLoader(PRTERRINFO pErrInfo);
1543
1544	/**
1545	* Get the address of a symbol in a ring-0 module.
1546	*
1547	* @returns VBox status code.
1548	* @param pvImageBase The base address of the image to search.
1549	* @param pszSymbol Symbol name. If it's value is less than 64k it's treated like a
1550	* ordinal value rather than a string pointer.
1551	* @param ppvValue Where to store the symbol value.
1552	*/
1553	SUPR3DECL(int) SUPR3GetSymbolR0(void pvImageBase, const char pszSymbol, void **ppvValue);
1554
1555	/**
1556	* Load R0 HC VMM code.
1557	*
1558	* @returns VBox status code.
1559	* @deprecated Use SUPR3LoadModule(pszFilename, "VMMR0.r0", &pvImageBase)
1560	* @param pszFilename Full path to the VMMR0.r0 file (silly).
1561	* @param pErrInfo Where to return extended error information.
1562	* Optional.
1563	*/
1564	SUPR3DECL(int) SUPR3LoadVMM(const char *pszFilename, PRTERRINFO pErrInfo);
1565
1566	/**
1567	* Unloads R0 HC VMM code.
1568	*
1569	* @returns VBox status code.
1570	* @deprecated Use SUPR3FreeModule().
1571	*/
1572	SUPR3DECL(int) SUPR3UnloadVMM(void);
1573
1574	/**
1575	* Get the physical address of the GIP.
1576	*
1577	* @returns VBox status code.
1578	* @param pHCPhys Where to store the physical address of the GIP.
1579	*/
1580	SUPR3DECL(int) SUPR3GipGetPhys(PRTHCPHYS pHCPhys);
1581
1582	/**
1583	* Initializes only the bits relevant for the SUPR3HardenedVerify* APIs.
1584	*
1585	* This is for users that don't necessarily need to initialize the whole of
1586	* SUPLib. There is no harm in calling this one more time.
1587	*
1588	* @returns VBox status code.
1589	* @remarks Currently not counted, so only call once.
1590	*/
1591	SUPR3DECL(int) SUPR3HardenedVerifyInit(void);
1592
1593	/**
1594	* Reverses the effect of SUPR3HardenedVerifyInit if SUPR3InitEx hasn't been
1595	* called.
1596	*
1597	* Ignored if the support library was initialized using SUPR3Init or
1598	* SUPR3InitEx.
1599	*
1600	* @returns VBox status code.
1601	*/
1602	SUPR3DECL(int) SUPR3HardenedVerifyTerm(void);
1603
1604	/**
1605	* Verifies the integrity of a file, and optionally opens it.
1606	*
1607	* The integrity check is for whether the file is suitable for loading into
1608	* the hypervisor or VM process. The integrity check may include verifying
1609	* the authenticode/elfsign/whatever signature of the file, which can take
1610	* a little while.
1611	*
1612	* @returns VBox status code. On failure it will have printed a LogRel message.
1613	*
1614	* @param pszFilename The file.
1615	* @param pszWhat For the LogRel on failure.
1616	* @param phFile Where to store the handle to the opened file. This is optional, pass NULL
1617	* if the file should not be opened.
1618	* @deprecated Write a new one.
1619	*/
1620	SUPR3DECL(int) SUPR3HardenedVerifyFile(const char pszFilename, const char pszWhat, PRTFILE phFile);
1621
1622	/**
1623	* Verifies the integrity of a the current process, including the image
1624	* location and that the invocation was absolute.
1625	*
1626	* This must currently be called after initializing the runtime. The intended
1627	* audience is set-uid-to-root applications, root services and similar.
1628	*
1629	* @returns VBox status code. On failure
1630	* message.
1631	* @param pszArgv0 The first argument to main().
1632	* @param fInternal Set this to @c true if this is an internal
1633	* VirtualBox application. Otherwise pass @c false.
1634	* @param pErrInfo Where to return extended error information.
1635	*/
1636	SUPR3DECL(int) SUPR3HardenedVerifySelf(const char *pszArgv0, bool fInternal, PRTERRINFO pErrInfo);
1637
1638	/**
1639	* Verifies the integrity of an installation directory.
1640	*
1641	* The integrity check verifies that the directory cannot be tampered with by
1642	* normal users on the system. On Unix this translates to root ownership and
1643	* no symbolic linking.
1644	*
1645	* @returns VBox status code. On failure a message will be stored in @a pszErr.
1646	*
1647	* @param pszDirPath The directory path.
1648	* @param fRecursive Whether the check should be recursive or
1649	* not. When set, all sub-directores will be checked,
1650	* including files (@a fCheckFiles is ignored).
1651	* @param fCheckFiles Whether to apply the same basic integrity check to
1652	* the files in the directory as the directory itself.
1653	* @param pErrInfo Where to return extended error information.
1654	* Optional.
1655	*/
1656	SUPR3DECL(int) SUPR3HardenedVerifyDir(const char *pszDirPath, bool fRecursive, bool fCheckFiles, PRTERRINFO pErrInfo);
1657
1658	/**
1659	* Verifies the integrity of a plug-in module.
1660	*
1661	* This is similar to SUPR3HardenedLdrLoad, except it does not load the module
1662	* and that the module does not have to be shipped with VirtualBox.
1663	*
1664	* @returns VBox status code. On failure a message will be stored in @a pszErr.
1665	*
1666	* @param pszFilename The filename of the plug-in module (nothing can be
1667	* omitted here).
1668	* @param pErrInfo Where to return extended error information.
1669	* Optional.
1670	*/
1671	SUPR3DECL(int) SUPR3HardenedVerifyPlugIn(const char *pszFilename, PRTERRINFO pErrInfo);
1672
1673	/**
1674	* Same as RTLdrLoad() but will verify the files it loads (hardened builds).
1675	*
1676	* Will add dll suffix if missing and try load the file.
1677	*
1678	* @returns iprt status code.
1679	* @param pszFilename Image filename. This must have a path.
1680	* @param phLdrMod Where to store the handle to the loaded module.
1681	* @param fFlags See RTLDRLOAD_FLAGS_XXX.
1682	* @param pErrInfo Where to return extended error information.
1683	* Optional.
1684	*/
1685	SUPR3DECL(int) SUPR3HardenedLdrLoad(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo);
1686
1687	/**
1688	* Same as RTLdrLoadAppPriv() but it will verify the files it loads (hardened
1689	* builds).
1690	*
1691	* Will add dll suffix to the file if missing, then look for it in the
1692	* architecture dependent application directory.
1693	*
1694	* @returns iprt status code.
1695	* @param pszFilename Image filename.
1696	* @param phLdrMod Where to store the handle to the loaded module.
1697	* @param fFlags See RTLDRLOAD_FLAGS_XXX.
1698	* @param pErrInfo Where to return extended error information.
1699	* Optional.
1700	*/
1701	SUPR3DECL(int) SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo);
1702
1703	/**
1704	* Same as RTLdrLoad() but will verify the files it loads (hardened builds).
1705	*
1706	* This differs from SUPR3HardenedLdrLoad() in that it can load modules from
1707	* extension packs and anything else safely installed on the system, provided
1708	* they pass the hardening tests.
1709	*
1710	* @returns iprt status code.
1711	* @param pszFilename The full path to the module, with extension.
1712	* @param phLdrMod Where to store the handle to the loaded module.
1713	* @param pErrInfo Where to return extended error information.
1714	* Optional.
1715	*/
1716	SUPR3DECL(int) SUPR3HardenedLdrLoadPlugIn(const char *pszFilename, PRTLDRMOD phLdrMod, PRTERRINFO pErrInfo);
1717
1718	/**
1719	* Check if the host kernel can run in VMX root mode.
1720	*
1721	* @returns VINF_SUCCESS if supported, error code indicating why if not.
1722	* @param ppszWhy Where to return an explanatory message on failure.
1723	*/
1724	SUPR3DECL(int) SUPR3QueryVTxSupported(const char **ppszWhy);
1725
1726	/**
1727	* Return VT-x/AMD-V capabilities.
1728	*
1729	* @returns VINF_SUCCESS if supported, error code indicating why if not.
1730	* @param pfCaps Pointer to capability dword (out).
1731	* @todo Intended for main, which means we need to relax the privilege requires
1732	* when accessing certain vboxdrv functions.
1733	*/
1734	SUPR3DECL(int) SUPR3QueryVTCaps(uint32_t *pfCaps);
1735
1736	/**
1737	* Check if NEM is supported when no VT-x/AMD-V is indicated by the CPU.
1738	*
1739	* This is really only for the windows case where we're running in a root
1740	* partition and isn't allowed to use the hardware directly.
1741	*
1742	* @returns True if NEM API support, false if not.
1743	*/
1744	SUPR3DECL(bool) SUPR3IsNemSupportedWhenNoVtxOrAmdV(void);
1745
1746	/**
1747	* Open the tracer.
1748	*
1749	* @returns VBox status code.
1750	* @param uCookie Cookie identifying the tracer we expect to talk to.
1751	* @param uArg Tracer specific open argument.
1752	*/
1753	SUPR3DECL(int) SUPR3TracerOpen(uint32_t uCookie, uintptr_t uArg);
1754
1755	/**
1756	* Closes the tracer.
1757	*
1758	* @returns VBox status code.
1759	*/
1760	SUPR3DECL(int) SUPR3TracerClose(void);
1761
1762	/**
1763	* Perform an I/O request on the tracer.
1764	*
1765	* @returns VBox status.
1766	* @param uCmd The tracer command.
1767	* @param uArg The argument.
1768	* @param piRetVal Where to store the tracer return value.
1769	*/
1770	SUPR3DECL(int) SUPR3TracerIoCtl(uintptr_t uCmd, uintptr_t uArg, int32_t *piRetVal);
1771
1772	/**
1773	* Registers the user module with the tracer.
1774	*
1775	* @returns VBox status code.
1776	* @param hModNative Native module handle. Pass ~(uintptr_t)0 if not
1777	* at hand.
1778	* @param pszModule The module name.
1779	* @param pVtgHdr The VTG header.
1780	* @param uVtgHdrAddr The address to which the VTG header is loaded
1781	* in the relevant execution context.
1782	* @param fFlags See SUP_TRACER_UMOD_FLAGS_XXX
1783	*/
1784	SUPR3DECL(int) SUPR3TracerRegisterModule(uintptr_t hModNative, const char pszModule, struct VTGOBJHDR pVtgHdr,
1785	RTUINTPTR uVtgHdrAddr, uint32_t fFlags);
1786
1787	/**
1788	* Deregisters the user module.
1789	*
1790	* @returns VBox status code.
1791	* @param pVtgHdr The VTG header.
1792	*/
1793	SUPR3DECL(int) SUPR3TracerDeregisterModule(struct VTGOBJHDR *pVtgHdr);
1794
1795	/**
1796	* Fire the probe.
1797	*
1798	* @param pVtgProbeLoc The probe location record.
1799	* @param uArg0 Raw probe argument 0.
1800	* @param uArg1 Raw probe argument 1.
1801	* @param uArg2 Raw probe argument 2.
1802	* @param uArg3 Raw probe argument 3.
1803	* @param uArg4 Raw probe argument 4.
1804	*/
1805	SUPDECL(void) SUPTracerFireProbe(struct VTGPROBELOC *pVtgProbeLoc, uintptr_t uArg0, uintptr_t uArg1, uintptr_t uArg2,
1806	uintptr_t uArg3, uintptr_t uArg4);
1807
1808	/**
1809	* Attempts to read the value of an MSR.
1810	*
1811	* @returns VBox status code.
1812	* @param uMsr The MSR to read.
1813	* @param idCpu The CPU to read it on, NIL_RTCPUID if it doesn't
1814	* matter which CPU.
1815	* @param puValue Where to return the value.
1816	* @param pfGp Where to store the \#GP indicator for the read
1817	* operation.
1818	*/
1819	SUPR3DECL(int) SUPR3MsrProberRead(uint32_t uMsr, RTCPUID idCpu, uint64_t puValue, bool pfGp);
1820
1821	/**
1822	* Attempts to write to an MSR.
1823	*
1824	* @returns VBox status code.
1825	* @param uMsr The MSR to write to.
1826	* @param idCpu The CPU to wrtie it on, NIL_RTCPUID if it
1827	* doesn't matter which CPU.
1828	* @param uValue The value to write.
1829	* @param pfGp Where to store the \#GP indicator for the write
1830	* operation.
1831	*/
1832	SUPR3DECL(int) SUPR3MsrProberWrite(uint32_t uMsr, RTCPUID idCpu, uint64_t uValue, bool *pfGp);
1833
1834	/**
1835	* Attempts to modify the value of an MSR.
1836	*
1837	* @returns VBox status code.
1838	* @param uMsr The MSR to modify.
1839	* @param idCpu The CPU to modify it on, NIL_RTCPUID if it
1840	* doesn't matter which CPU.
1841	* @param fAndMask The bits to keep in the current MSR value.
1842	* @param fOrMask The bits to set before writing.
1843	* @param pResult The result buffer.
1844	*/
1845	SUPR3DECL(int) SUPR3MsrProberModify(uint32_t uMsr, RTCPUID idCpu, uint64_t fAndMask, uint64_t fOrMask,
1846	PSUPMSRPROBERMODIFYRESULT pResult);
1847
1848	/**
1849	* Attempts to modify the value of an MSR, extended version.
1850	*
1851	* @returns VBox status code.
1852	* @param uMsr The MSR to modify.
1853	* @param idCpu The CPU to modify it on, NIL_RTCPUID if it
1854	* doesn't matter which CPU.
1855	* @param fAndMask The bits to keep in the current MSR value.
1856	* @param fOrMask The bits to set before writing.
1857	* @param fFaster If set to @c true some cache/tlb invalidation is
1858	* skipped, otherwise behave like
1859	* SUPR3MsrProberModify.
1860	* @param pResult The result buffer.
1861	*/
1862	SUPR3DECL(int) SUPR3MsrProberModifyEx(uint32_t uMsr, RTCPUID idCpu, uint64_t fAndMask, uint64_t fOrMask, bool fFaster,
1863	PSUPMSRPROBERMODIFYRESULT pResult);
1864
1865	/**
1866	* Resume built-in keyboard on MacBook Air and Pro hosts.
1867	*
1868	* @returns VBox status code.
1869	*/
1870	SUPR3DECL(int) SUPR3ResumeSuspendedKeyboards(void);
1871
1872	/**
1873	* Measure the TSC-delta for the specified CPU.
1874	*
1875	* @returns VBox status code.
1876	* @param idCpu The CPU to measure the TSC-delta for.
1877	* @param fAsync Whether the measurement is asynchronous, returns
1878	* immediately after signalling a measurement
1879	* request.
1880	* @param fForce Whether to perform a measurement even if the
1881	* specified CPU has a (possibly) valid TSC delta.
1882	* @param cRetries Number of times to retry failed delta
1883	* measurements.
1884	* @param cMsWaitRetry Number of milliseconds to wait between retries.
1885	*/
1886	SUPR3DECL(int) SUPR3TscDeltaMeasure(RTCPUID idCpu, bool fAsync, bool fForce, uint8_t cRetries, uint8_t cMsWaitRetry);
1887
1888	/**
1889	* Reads the delta-adjust TSC value.
1890	*
1891	* @returns VBox status code.
1892	* @param puTsc Where to store the read TSC value.
1893	* @param pidApic Where to store the APIC ID of the CPU where the TSC
1894	* was read (optional, can be NULL).
1895	*/
1896	SUPR3DECL(int) SUPR3ReadTsc(uint64_t puTsc, uint16_t pidApic);
1897
1898	/**
1899	* Modifies the GIP flags.
1900	*
1901	* @returns VBox status code.
1902	* @param fOrMask The OR mask of the GIP flags, see SUPGIP_FLAGS_XXX.
1903	* @param fAndMask The AND mask of the GIP flags, see SUPGIP_FLAGS_XXX.
1904	*/
1905	SUPR3DECL(int) SUPR3GipSetFlags(uint32_t fOrMask, uint32_t fAndMask);
1906
1907	/**
1908	* Return processor microcode revision, if applicable.
1909	*
1910	* @returns VINF_SUCCESS if supported, error code indicating why if not.
1911	* @param puMicrocodeRev Pointer to microcode revision dword (out).
1912	*/
1913	SUPR3DECL(int) SUPR3QueryMicrocodeRev(uint32_t *puMicrocodeRev);
1914
1915	/**
1916	* Gets hardware-virtualization MSRs of the CPU, if available.
1917	*
1918	* @returns VINF_SUCCESS if available, error code indicating why if not.
1919	* @param pHwvirtMsrs Where to store the hardware-virtualization MSRs.
1920	* @param fForceRequery Whether to force complete re-querying of MSRs (rather
1921	* than fetching cached values when available).
1922	*/
1923	SUPR3DECL(int) SUPR3GetHwvirtMsrs(PSUPHWVIRTMSRS pHwvirtMsrs, bool fForceRequery);
1924
1925	/** @} */
1926	#endif /* IN_RING3 */
1927
1928
1929	/** @name User mode module flags (SUPR3TracerRegisterModule & SUP_IOCTL_TRACER_UMOD_REG).
1930	* @{ */
1931	/** Executable image. */
1932	#define SUP_TRACER_UMOD_FLAGS_EXE UINT32_C(1)
1933	/** Shared library (DLL, DYLIB, SO, etc). */
1934	#define SUP_TRACER_UMOD_FLAGS_SHARED UINT32_C(2)
1935	/** Image type mask. */
1936	#define SUP_TRACER_UMOD_FLAGS_TYPE_MASK UINT32_C(3)
1937	/** @} */
1938
1939
1940	#ifdef IN_RING0
1941	/** @defgroup grp_sup_r0 SUP Host Context Ring-0 API
1942	* @{
1943	*/
1944
1945	/**
1946	* Security objectype.
1947	*/
1948	typedef enum SUPDRVOBJTYPE
1949	{
1950	/** The usual invalid object. */
1951	SUPDRVOBJTYPE_INVALID = 0,
1952	/** A Virtual Machine instance. */
1953	SUPDRVOBJTYPE_VM,
1954	/** Internal network. */
1955	SUPDRVOBJTYPE_INTERNAL_NETWORK,
1956	/** Internal network interface. */
1957	SUPDRVOBJTYPE_INTERNAL_NETWORK_INTERFACE,
1958	/** Single release event semaphore. */
1959	SUPDRVOBJTYPE_SEM_EVENT,
1960	/** Multiple release event semaphore. */
1961	SUPDRVOBJTYPE_SEM_EVENT_MULTI,
1962	/** Raw PCI device. */
1963	SUPDRVOBJTYPE_RAW_PCI_DEVICE,
1964	/** The first invalid object type in this end. */
1965	SUPDRVOBJTYPE_END,
1966	/** The usual 32-bit type size hack. */
1967	SUPDRVOBJTYPE_32_BIT_HACK = 0x7ffffff
1968	} SUPDRVOBJTYPE;
1969
1970	/**
1971	* Object destructor callback.
1972	* This is called for reference counted objectes when the count reaches 0.
1973	*
1974	* @param pvObj The object pointer.
1975	* @param pvUser1 The first user argument.
1976	* @param pvUser2 The second user argument.
1977	*/
1978	typedef DECLCALLBACKTYPE(void, FNSUPDRVDESTRUCTOR,(void pvObj, void pvUser1, void *pvUser2));
1979	/** Pointer to a FNSUPDRVDESTRUCTOR(). */
1980	typedef FNSUPDRVDESTRUCTOR *PFNSUPDRVDESTRUCTOR;
1981
1982	SUPR0DECL(void ) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void pvUser1, void *pvUser2);
1983	SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession);
1984	SUPR0DECL(int) SUPR0ObjAddRefEx(void *pvObj, PSUPDRVSESSION pSession, bool fNoBlocking);
1985	SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession);
1986	SUPR0DECL(int) SUPR0ObjVerifyAccess(void pvObj, PSUPDRVSESSION pSession, const char pszObjName);
1987
1988	SUPR0DECL(PVM) SUPR0GetSessionVM(PSUPDRVSESSION pSession);
1989	SUPR0DECL(PGVM) SUPR0GetSessionGVM(PSUPDRVSESSION pSession);
1990	SUPR0DECL(int) SUPR0SetSessionVM(PSUPDRVSESSION pSession, PGVM pGVM, PVM pVM);
1991
1992	SUPR0DECL(int) SUPR0LockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t cPages, PRTHCPHYS paPages);
1993	SUPR0DECL(int) SUPR0UnlockMem(PSUPDRVSESSION pSession, RTR3PTR pvR3);
1994	SUPR0DECL(int) SUPR0ContAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS pHCPhys);
1995	SUPR0DECL(int) SUPR0ContFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr);
1996	SUPR0DECL(int) SUPR0LowAlloc(PSUPDRVSESSION pSession, uint32_t cPages, PRTR0PTR ppvR0, PRTR3PTR ppvR3, PRTHCPHYS paPages);
1997	SUPR0DECL(int) SUPR0LowFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr);
1998	SUPR0DECL(int) SUPR0MemAlloc(PSUPDRVSESSION pSession, uint32_t cb, PRTR0PTR ppvR0, PRTR3PTR ppvR3);
1999	SUPR0DECL(int) SUPR0MemGetPhys(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr, PSUPPAGE paPages);
2000	SUPR0DECL(int) SUPR0MemFree(PSUPDRVSESSION pSession, RTHCUINTPTR uPtr);
2001	SUPR0DECL(int) SUPR0PageAllocEx(PSUPDRVSESSION pSession, uint32_t cPages, uint32_t fFlags, PRTR3PTR ppvR3, PRTR0PTR ppvR0, PRTHCPHYS paPages);
2002	SUPR0DECL(int) SUPR0PageMapKernel(PSUPDRVSESSION pSession, RTR3PTR pvR3, uint32_t offSub, uint32_t cbSub, uint32_t fFlags, PRTR0PTR ppvR0);
2003	SUPR0DECL(int) SUPR0PageProtect(PSUPDRVSESSION pSession, RTR3PTR pvR3, RTR0PTR pvR0, uint32_t offSub, uint32_t cbSub, uint32_t fProt);
2004	SUPR0DECL(int) SUPR0PageFree(PSUPDRVSESSION pSession, RTR3PTR pvR3);
2005	SUPR0DECL(int) SUPR0GipMap(PSUPDRVSESSION pSession, PRTR3PTR ppGipR3, PRTHCPHYS pHCPhysGip);
2006	SUPR0DECL(int) SUPR0LdrLock(PSUPDRVSESSION pSession);
2007	SUPR0DECL(int) SUPR0LdrUnlock(PSUPDRVSESSION pSession);
2008	SUPR0DECL(bool) SUPR0LdrIsLockOwnerByMod(void *hMod, bool fWantToHear);
2009	SUPR0DECL(int) SUPR0LdrModByName(PSUPDRVSESSION pSession, const char pszName, void *phMod);
2010	SUPR0DECL(int) SUPR0LdrModRetain(PSUPDRVSESSION pSession, void *hMod);
2011	SUPR0DECL(int) SUPR0LdrModRelease(PSUPDRVSESSION pSession, void *hMod);
2012	SUPR0DECL(int) SUPR0GetVTSupport(uint32_t *pfCaps);
2013	SUPR0DECL(int) SUPR0GetHwvirtMsrs(PSUPHWVIRTMSRS pMsrs, uint32_t fCaps, bool fForce);
2014	SUPR0DECL(int) SUPR0GetSvmUsability(bool fInitSvm);
2015	SUPR0DECL(int) SUPR0GetVmxUsability(bool *pfIsSmxModeAmbiguous);
2016	SUPR0DECL(int) SUPR0GetCurrentGdtRw(RTHCUINTPTR *pGdtRw);
2017	SUPR0DECL(int) SUPR0QueryVTCaps(PSUPDRVSESSION pSession, uint32_t *pfCaps);
2018	SUPR0DECL(int) SUPR0GipUnmap(PSUPDRVSESSION pSession);
2019	SUPR0DECL(int) SUPR0QueryUcodeRev(PSUPDRVSESSION pSession, uint32_t *puMicrocodeRev);
2020	SUPR0DECL(SUPPAGINGMODE) SUPR0GetPagingMode(void);
2021	SUPR0DECL(RTCCUINTREG) SUPR0ChangeCR4(RTCCUINTREG fOrMask, RTCCUINTREG fAndMask);
2022	SUPR0DECL(int) SUPR0EnableVTx(bool fEnable);
2023	SUPR0DECL(bool) SUPR0SuspendVTxOnCpu(void);
2024	SUPR0DECL(void) SUPR0ResumeVTxOnCpu(bool fSuspended);
2025	#define SUP_TSCDELTA_MEASURE_F_FORCE RT_BIT_32(0)
2026	#define SUP_TSCDELTA_MEASURE_F_ASYNC RT_BIT_32(1)
2027	#define SUP_TSCDELTA_MEASURE_F_VALID_MASK UINT32_C(0x00000003)
2028	SUPR0DECL(int) SUPR0TscDeltaMeasureBySetIndex(PSUPDRVSESSION pSession, uint32_t iCpuSet, uint32_t fFlags,
2029	RTMSINTERVAL cMsWaitRetry, RTMSINTERVAL cMsWaitThread, uint32_t cTries);
2030
2031	SUPR0DECL(void) SUPR0BadContext(PSUPDRVSESSION pSession, const char pszFile, uint32_t uLine, const char pszExpr);
2032
2033	#if defined(RT_OS_LINUX) \|\| defined(RT_OS_SOLARIS)
2034	/**
2035	* Translates a physical address to a virtual mapping (valid up to end of page).
2036	* @returns VBox status code.
2037	* @param HCPhys The physical address, must be page aligned.
2038	* @param ppv Where to store the mapping address on success.
2039	*/
2040	SUPR0DECL(int) SUPR0HCPhysToVirt(RTHCPHYS HCPhys, void **ppv);
2041	#endif
2042
2043	/** Context structure returned by SUPR0IoCtlSetup for use with
2044	* SUPR0IoCtlPerform and cleaned up by SUPR0IoCtlCleanup. */
2045	typedef struct SUPR0IOCTLCTX *PSUPR0IOCTLCTX;
2046
2047	/**
2048	* Sets up a I/O control context for the given handle.
2049	*
2050	* @returns VBox status code.
2051	* @param pSession The support driver session.
2052	* @param hHandle The handle.
2053	* @param fFlags Flag, MBZ.
2054	* @param ppCtx Where the context is returned.
2055	*/
2056	SUPR0DECL(int) SUPR0IoCtlSetupForHandle(PSUPDRVSESSION pSession, intptr_t hHandle, uint32_t fFlags, PSUPR0IOCTLCTX *ppCtx);
2057
2058	/**
2059	* Cleans up the I/O control context when done.
2060	*
2061	* This won't close the handle passed to SUPR0IoCtlSetupForHandle.
2062	*
2063	* @returns VBox status code.
2064	* @param pCtx The I/O control context to cleanup.
2065	*/
2066	SUPR0DECL(int) SUPR0IoCtlCleanup(PSUPR0IOCTLCTX pCtx);
2067
2068	/**
2069	* Performs an I/O control operation.
2070	*
2071	* @returns VBox status code.
2072	* @param pCtx The I/O control context returned by
2073	* SUPR0IoCtlSetupForHandle.
2074	* @param uFunction The I/O control function to perform.
2075	* @param pvInput Pointer to input buffer (ring-0).
2076	* @param pvInputUser Ring-3 pointer corresponding to @a pvInput.
2077	* @param cbInput The amount of input. If zero, both input pointers
2078	* are expected to be NULL.
2079	* @param pvOutput Pointer to output buffer (ring-0).
2080	* @param pvOutputUser Ring-3 pointer corresponding to @a pvInput.
2081	* @param cbOutput The amount of input. If zero, both input pointers
2082	* are expected to be NULL.
2083	* @param piNativeRc Where to return the native return code. When
2084	* specified the VBox status code will typically be
2085	* VINF_SUCCESS and the caller have to consult this for
2086	* the actual result of the operation. (This saves
2087	* pointless status code conversion.) Optional.
2088	*
2089	* @note On unix systems where there is only one set of buffers possible,
2090	* pass the same pointers as input and output.
2091	*/
2092	SUPR0DECL(int) SUPR0IoCtlPerform(PSUPR0IOCTLCTX pCtx, uintptr_t uFunction,
2093	void *pvInput, RTR3PTR pvInputUser, size_t cbInput,
2094	void *pvOutput, RTR3PTR pvOutputUser, size_t cbOutput,
2095	int32_t *piNativeRc);
2096
2097	/**
2098	* Writes to the debugger and/or kernel log.
2099	*
2100	* The length of the formatted message is somewhat limited, so keep things short
2101	* and to the point.
2102	*
2103	* @returns Number of bytes written, mabye.
2104	* @param pszFormat IPRT format string.
2105	* @param ... Arguments referenced by the format string.
2106	*/
2107	SUPR0DECL(int) SUPR0Printf(const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(1, 2);
2108
2109	/**
2110	* Returns configuration flags of the host kernel.
2111	*
2112	* @returns Combination of SUPKERNELFEATURES_XXX flags.
2113	*/
2114	SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void);
2115
2116	/** @copydoc RTLogGetDefaultInstanceEx
2117	* @remarks To allow overriding RTLogGetDefaultInstanceEx locally. */
2118	SUPR0DECL(struct RTLOGGER *) SUPR0GetDefaultLogInstanceEx(uint32_t fFlagsAndGroup);
2119	/** @copydoc RTLogRelGetDefaultInstanceEx
2120	* @remarks To allow overriding RTLogRelGetDefaultInstanceEx locally. */
2121	SUPR0DECL(struct RTLOGGER *) SUPR0GetDefaultLogRelInstanceEx(uint32_t fFlagsAndGroup);
2122
2123
2124	/** @name Absolute symbols
2125	* Take the address of these, don't try call them.
2126	* @{ */
2127	SUPR0DECL(void) SUPR0AbsIs64bit(void);
2128	SUPR0DECL(void) SUPR0Abs64bitKernelCS(void);
2129	SUPR0DECL(void) SUPR0Abs64bitKernelSS(void);
2130	SUPR0DECL(void) SUPR0Abs64bitKernelDS(void);
2131	SUPR0DECL(void) SUPR0AbsKernelCS(void);
2132	SUPR0DECL(void) SUPR0AbsKernelSS(void);
2133	SUPR0DECL(void) SUPR0AbsKernelDS(void);
2134	SUPR0DECL(void) SUPR0AbsKernelES(void);
2135	SUPR0DECL(void) SUPR0AbsKernelFS(void);
2136	SUPR0DECL(void) SUPR0AbsKernelGS(void);
2137	/** @} */
2138
2139	/**
2140	* Support driver component factory.
2141	*
2142	* Component factories are registered by drivers that provides services
2143	* such as the host network interface filtering and access to the host
2144	* TCP/IP stack.
2145	*
2146	* @remark Module dependencies and making sure that a component doesn't
2147	* get unloaded while in use, is the sole responsibility of the
2148	* driver/kext/whatever implementing the component.
2149	*/
2150	typedef struct SUPDRVFACTORY
2151	{
2152	/** The (unique) name of the component factory. */
2153	char szName[56];
2154	/**
2155	* Queries a factory interface.
2156	*
2157	* The factory interface is specific to each component and will be be
2158	* found in the header(s) for the component alongside its UUID.
2159	*
2160	* @returns Pointer to the factory interfaces on success, NULL on failure.
2161	*
2162	* @param pSupDrvFactory Pointer to this structure.
2163	* @param pSession The SUPDRV session making the query.
2164	* @param pszInterfaceUuid The UUID of the factory interface.
2165	*/
2166	DECLR0CALLBACKMEMBER(void , pfnQueryFactoryInterface,(struct SUPDRVFACTORY const pSupDrvFactory, PSUPDRVSESSION pSession, const char *pszInterfaceUuid));
2167	} SUPDRVFACTORY;
2168	/** Pointer to a support driver factory. */
2169	typedef SUPDRVFACTORY *PSUPDRVFACTORY;
2170	/** Pointer to a const support driver factory. */
2171	typedef SUPDRVFACTORY const *PCSUPDRVFACTORY;
2172
2173	SUPR0DECL(int) SUPR0ComponentRegisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory);
2174	SUPR0DECL(int) SUPR0ComponentDeregisterFactory(PSUPDRVSESSION pSession, PCSUPDRVFACTORY pFactory);
2175	SUPR0DECL(int) SUPR0ComponentQueryFactory(PSUPDRVSESSION pSession, const char pszName, const char pszInterfaceUuid, void **ppvFactoryIf);
2176
2177
2178	/** @name Tracing
2179	* @{ */
2180
2181	/**
2182	* Tracer data associated with a provider.
2183	*/
2184	typedef union SUPDRVTRACERDATA
2185	{
2186	/** Generic */
2187	uint64_t au64[2];
2188
2189	/** DTrace data. */
2190	struct
2191	{
2192	/** Provider ID. */
2193	uintptr_t idProvider;
2194	/** The number of trace points provided. */
2195	uint32_t volatile cProvidedProbes;
2196	/** Whether we've invalidated this bugger. */
2197	bool fZombie;
2198	} DTrace;
2199	} SUPDRVTRACERDATA;
2200	/** Pointer to the tracer data associated with a provider. */
2201	typedef SUPDRVTRACERDATA *PSUPDRVTRACERDATA;
2202
2203	/**
2204	* Probe location info for ring-0.
2205	*
2206	* Since we cannot trust user tracepoint modules, we need to duplicate the probe
2207	* ID and enabled flag in ring-0.
2208	*/
2209	typedef struct SUPDRVPROBELOC
2210	{
2211	/** The probe ID. */
2212	uint32_t idProbe;
2213	/** Whether it's enabled or not. */
2214	bool fEnabled;
2215	} SUPDRVPROBELOC;
2216	/** Pointer to a ring-0 probe location record. */
2217	typedef SUPDRVPROBELOC *PSUPDRVPROBELOC;
2218
2219	/**
2220	* Probe info for ring-0.
2221	*
2222	* Since we cannot trust user tracepoint modules, we need to duplicate the
2223	* probe enable count.
2224	*/
2225	typedef struct SUPDRVPROBEINFO
2226	{
2227	/** The number of times this probe has been enabled. */
2228	uint32_t volatile cEnabled;
2229	} SUPDRVPROBEINFO;
2230	/** Pointer to a ring-0 probe info record. */
2231	typedef SUPDRVPROBEINFO *PSUPDRVPROBEINFO;
2232
2233	/**
2234	* Support driver tracepoint provider core.
2235	*/
2236	typedef struct SUPDRVVDTPROVIDERCORE
2237	{
2238	/** The tracer data member. */
2239	SUPDRVTRACERDATA TracerData;
2240	/** Pointer to the provider name (a copy that's always available). */
2241	const char *pszName;
2242	/** Pointer to the module name (a copy that's always available). */
2243	const char *pszModName;
2244
2245	/** The provider descriptor. */
2246	struct VTGDESCPROVIDER *pDesc;
2247	/** The VTG header. */
2248	struct VTGOBJHDR *pHdr;
2249
2250	/** The size of the entries in the pvProbeLocsEn table. */
2251	uint8_t cbProbeLocsEn;
2252	/** The actual module bit count (corresponds to cbProbeLocsEn). */
2253	uint8_t cBits;
2254	/** Set if this is a Umod, otherwise clear. */
2255	bool fUmod;
2256	/** Explicit alignment padding (paranoia). */
2257	uint8_t abAlignment[ARCH_BITS == 32 ? 1 : 5];
2258
2259	/** The probe locations used for descriptive purposes. */
2260	struct VTGPROBELOC const *paProbeLocsRO;
2261	/** Pointer to the probe location array where the enable flag needs
2262	* flipping. For kernel providers, this will always be SUPDRVPROBELOC,
2263	* while user providers can either be 32-bit or 64-bit. Use
2264	* cbProbeLocsEn to calculate the address of an entry. */
2265	void *pvProbeLocsEn;
2266	/** Pointer to the probe array containing the enabled counts. */
2267	uint32_t *pacProbeEnabled;
2268
2269	/** The ring-0 probe location info for user tracepoint modules.
2270	* This is NULL if fUmod is false. */
2271	PSUPDRVPROBELOC paR0ProbeLocs;
2272	/** The ring-0 probe info for user tracepoint modules.
2273	* This is NULL if fUmod is false. */
2274	PSUPDRVPROBEINFO paR0Probes;
2275
2276	} SUPDRVVDTPROVIDERCORE;
2277	/** Pointer to a tracepoint provider core structure. */
2278	typedef SUPDRVVDTPROVIDERCORE *PSUPDRVVDTPROVIDERCORE;
2279
2280	/** Pointer to a tracer registration record. */
2281	typedef struct SUPDRVTRACERREG const *PCSUPDRVTRACERREG;
2282	/**
2283	* Support driver tracer registration record.
2284	*/
2285	typedef struct SUPDRVTRACERREG
2286	{
2287	/** Magic value (SUPDRVTRACERREG_MAGIC). */
2288	uint32_t u32Magic;
2289	/** Version (SUPDRVTRACERREG_VERSION). */
2290	uint32_t u32Version;
2291
2292	/**
2293	* Fire off a kernel probe.
2294	*
2295	* @param pVtgProbeLoc The probe location record.
2296	* @param uArg0 The first raw probe argument.
2297	* @param uArg1 The second raw probe argument.
2298	* @param uArg2 The third raw probe argument.
2299	* @param uArg3 The fourth raw probe argument.
2300	* @param uArg4 The fifth raw probe argument.
2301	*
2302	* @remarks SUPR0TracerFireProbe will do a tail jump thru this member, so
2303	* no extra stack frames will be added.
2304	* @remarks This does not take a 'this' pointer argument because it doesn't map
2305	* well onto VTG or DTrace.
2306	*
2307	*/
2308	DECLR0CALLBACKMEMBER(void, pfnProbeFireKernel, (struct VTGPROBELOC *pVtgProbeLoc, uintptr_t uArg0, uintptr_t uArg1, uintptr_t uArg2,
2309	uintptr_t uArg3, uintptr_t uArg4));
2310
2311	/**
2312	* Fire off a user-mode probe.
2313	*
2314	* @param pThis Pointer to the registration record.
2315	*
2316	* @param pVtgProbeLoc The probe location record.
2317	* @param pSession The user session.
2318	* @param pCtx The usermode context info.
2319	* @param pVtgHdr The VTG header (read-only).
2320	* @param pProbeLocRO The read-only probe location record .
2321	*/
2322	DECLR0CALLBACKMEMBER(void, pfnProbeFireUser, (PCSUPDRVTRACERREG pThis, PSUPDRVSESSION pSession, PCSUPDRVTRACERUSRCTX pCtx,
2323	struct VTGOBJHDR const pVtgHdr, struct VTGPROBELOC const pProbeLocRO));
2324
2325	/**
2326	* Opens up the tracer.
2327	*
2328	* @returns VBox status code.
2329	* @param pThis Pointer to the registration record.
2330	* @param pSession The session doing the opening.
2331	* @param uCookie A cookie (magic) unique to the tracer, so it can
2332	* fend off incompatible clients.
2333	* @param uArg Tracer specific argument.
2334	* @param puSessionData Pointer to the session data variable. This must be
2335	* set to a non-zero value on success.
2336	*/
2337	DECLR0CALLBACKMEMBER(int, pfnTracerOpen, (PCSUPDRVTRACERREG pThis, PSUPDRVSESSION pSession, uint32_t uCookie, uintptr_t uArg,
2338	uintptr_t *puSessionData));
2339
2340	/**
2341	* I/O control style tracer communication method.
2342	*
2343	*
2344	* @returns VBox status code.
2345	* @param pThis Pointer to the registration record.
2346	* @param pSession The session.
2347	* @param uSessionData The session data value.
2348	* @param uCmd The tracer specific command.
2349	* @param uArg The tracer command specific argument.
2350	* @param piRetVal The tracer specific return value.
2351	*/
2352	DECLR0CALLBACKMEMBER(int, pfnTracerIoCtl, (PCSUPDRVTRACERREG pThis, PSUPDRVSESSION pSession, uintptr_t uSessionData,
2353	uintptr_t uCmd, uintptr_t uArg, int32_t *piRetVal));
2354
2355	/**
2356	* Cleans up data the tracer has associated with a session.
2357	*
2358	* @param pThis Pointer to the registration record.
2359	* @param pSession The session handle.
2360	* @param uSessionData The data assoicated with the session.
2361	*/
2362	DECLR0CALLBACKMEMBER(void, pfnTracerClose, (PCSUPDRVTRACERREG pThis, PSUPDRVSESSION pSession, uintptr_t uSessionData));
2363
2364	/**
2365	* Registers a provider.
2366	*
2367	* @returns VBox status code.
2368	* @param pThis Pointer to the registration record.
2369	* @param pCore The provider core data.
2370	*
2371	* @todo Kernel vs. Userland providers.
2372	*/
2373	DECLR0CALLBACKMEMBER(int, pfnProviderRegister, (PCSUPDRVTRACERREG pThis, PSUPDRVVDTPROVIDERCORE pCore));
2374
2375	/**
2376	* Attempts to deregisters a provider.
2377	*
2378	* @returns VINF_SUCCESS or VERR_TRY_AGAIN. If the latter, the provider
2379	* should be made as harmless as possible before returning as the
2380	* VTG object and associated code will be unloaded upon return.
2381	*
2382	* @param pThis Pointer to the registration record.
2383	* @param pCore The provider core data.
2384	*/
2385	DECLR0CALLBACKMEMBER(int, pfnProviderDeregister, (PCSUPDRVTRACERREG pThis, PSUPDRVVDTPROVIDERCORE pCore));
2386
2387	/**
2388	* Make another attempt at unregister a busy provider.
2389	*
2390	* @returns VINF_SUCCESS or VERR_TRY_AGAIN.
2391	* @param pThis Pointer to the registration record.
2392	* @param pCore The provider core data.
2393	*/
2394	DECLR0CALLBACKMEMBER(int, pfnProviderDeregisterZombie, (PCSUPDRVTRACERREG pThis, PSUPDRVVDTPROVIDERCORE pCore));
2395
2396	/** End marker (SUPDRVTRACERREG_MAGIC). */
2397	uintptr_t uEndMagic;
2398	} SUPDRVTRACERREG;
2399
2400	/** Tracer magic (Kenny Garrett). */
2401	#define SUPDRVTRACERREG_MAGIC UINT32_C(0x19601009)
2402	/** Tracer registration structure version. */
2403	#define SUPDRVTRACERREG_VERSION RT_MAKE_U32(0, 1)
2404
2405	/** Pointer to a trace helper structure. */
2406	typedef struct SUPDRVTRACERHLP const *PCSUPDRVTRACERHLP;
2407	/**
2408	* Helper structure.
2409	*/
2410	typedef struct SUPDRVTRACERHLP
2411	{
2412	/** The structure version (SUPDRVTRACERHLP_VERSION). */
2413	uintptr_t uVersion;
2414
2415	/** @todo ... */
2416
2417	/** End marker (SUPDRVTRACERHLP_VERSION) */
2418	uintptr_t uEndVersion;
2419	} SUPDRVTRACERHLP;
2420	/** Tracer helper structure version. */
2421	#define SUPDRVTRACERHLP_VERSION RT_MAKE_U32(0, 1)
2422
2423	SUPR0DECL(int) SUPR0TracerRegisterImpl(void hMod, PSUPDRVSESSION pSession, PCSUPDRVTRACERREG pReg, PCSUPDRVTRACERHLP ppHlp);
2424	SUPR0DECL(int) SUPR0TracerDeregisterImpl(void *hMod, PSUPDRVSESSION pSession);
2425	SUPR0DECL(int) SUPR0TracerRegisterDrv(PSUPDRVSESSION pSession, struct VTGOBJHDR pVtgHdr, const char pszName);
2426	SUPR0DECL(void) SUPR0TracerDeregisterDrv(PSUPDRVSESSION pSession);
2427	SUPR0DECL(int) SUPR0TracerRegisterModule(void hMod, struct VTGOBJHDR pVtgHdr);
2428	SUPR0DECL(void) SUPR0TracerFireProbe(struct VTGPROBELOC *pVtgProbeLoc, uintptr_t uArg0, uintptr_t uArg1, uintptr_t uArg2,
2429	uintptr_t uArg3, uintptr_t uArg4);
2430	SUPR0DECL(void) SUPR0TracerUmodProbeFire(PSUPDRVSESSION pSession, PSUPDRVTRACERUSRCTX pCtx);
2431	/** @} */
2432
2433
2434	/**
2435	* Service request callback function.
2436	*
2437	* @returns VBox status code.
2438	* @param pSession The caller's session.
2439	* @param uOperation The operation identifier.
2440	* @param u64Arg 64-bit integer argument.
2441	* @param pReqHdr The request header. Input / Output. Optional.
2442	*/
2443	typedef DECLCALLBACKTYPE(int, FNSUPR0SERVICEREQHANDLER,(PSUPDRVSESSION pSession, uint32_t uOperation,
2444	uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr));
2445	/** Pointer to a FNR0SERVICEREQHANDLER(). */
2446	typedef R0PTRTYPE(FNSUPR0SERVICEREQHANDLER *) PFNSUPR0SERVICEREQHANDLER;
2447
2448
2449	/** @defgroup grp_sup_r0_idc The IDC Interface
2450	* @{
2451	*/
2452
2453	/** The current SUPDRV IDC version.
2454	* This follows the usual high word / low word rules, i.e. high word is the
2455	* major number and it signifies incompatible interface changes. */
2456	#define SUPDRV_IDC_VERSION UINT32_C(0x00010000)
2457
2458	/**
2459	* Inter-Driver Communication Handle.
2460	*/
2461	typedef union SUPDRVIDCHANDLE
2462	{
2463	/** Padding for opaque usage.
2464	* Must be greater or equal in size than the private struct. */
2465	void *apvPadding[4];
2466	#ifdef SUPDRVIDCHANDLEPRIVATE_DECLARED
2467	/** The private view. */
2468	struct SUPDRVIDCHANDLEPRIVATE s;
2469	#endif
2470	} SUPDRVIDCHANDLE;
2471	/** Pointer to a handle. */
2472	typedef SUPDRVIDCHANDLE *PSUPDRVIDCHANDLE;
2473
2474	SUPR0DECL(int) SUPR0IdcOpen(PSUPDRVIDCHANDLE pHandle, uint32_t uReqVersion, uint32_t uMinVersion,
2475	uint32_t puSessionVersion, uint32_t puDriverVersion, uint32_t *puDriverRevision);
2476	SUPR0DECL(int) SUPR0IdcCall(PSUPDRVIDCHANDLE pHandle, uint32_t iReq, void *pvReq, uint32_t cbReq);
2477	SUPR0DECL(int) SUPR0IdcClose(PSUPDRVIDCHANDLE pHandle);
2478	SUPR0DECL(PSUPDRVSESSION) SUPR0IdcGetSession(PSUPDRVIDCHANDLE pHandle);
2479	SUPR0DECL(int) SUPR0IdcComponentRegisterFactory(PSUPDRVIDCHANDLE pHandle, PCSUPDRVFACTORY pFactory);
2480	SUPR0DECL(int) SUPR0IdcComponentDeregisterFactory(PSUPDRVIDCHANDLE pHandle, PCSUPDRVFACTORY pFactory);
2481
2482	/** @} */
2483
2484	/** @name Ring-0 module entry points.
2485	*
2486	* These can be exported by ring-0 modules SUP are told to load.
2487	*
2488	* @{ */
2489	DECLEXPORT(int) ModuleInit(void *hMod);
2490	DECLEXPORT(void) ModuleTerm(void *hMod);
2491	/** @} */
2492
2493
2494	/** @} */
2495	#endif
2496
2497
2498	/** @name Trust Anchors and Certificates
2499	* @{ */
2500
2501	/**
2502	* Trust anchor table entry (in generated Certificates.cpp).
2503	*/
2504	typedef struct SUPTAENTRY
2505	{
2506	/** Pointer to the raw bytes. */
2507	const unsigned char *pch;
2508	/** Number of bytes. */
2509	unsigned cb;
2510	} SUPTAENTRY;
2511	/** Pointer to a trust anchor table entry. */
2512	typedef SUPTAENTRY const *PCSUPTAENTRY;
2513
2514	/** Macro for simplifying generating the trust anchor tables. */
2515	#define SUPTAENTRY_GEN(a_abTA) { &a_abTA[0], sizeof(a_abTA) }
2516
2517	/** All certificates we know. */
2518	extern SUPTAENTRY const g_aSUPAllTAs[];
2519	/** Number of entries in g_aSUPAllTAs. */
2520	extern unsigned const g_cSUPAllTAs;
2521
2522	/** Software publisher certificate roots (Authenticode). */
2523	extern SUPTAENTRY const g_aSUPSpcRootTAs[];
2524	/** Number of entries in g_aSUPSpcRootTAs. */
2525	extern unsigned const g_cSUPSpcRootTAs;
2526
2527	/** Kernel root certificates used by Windows. */
2528	extern SUPTAENTRY const g_aSUPNtKernelRootTAs[];
2529	/** Number of entries in g_aSUPNtKernelRootTAs. */
2530	extern unsigned const g_cSUPNtKernelRootTAs;
2531
2532	/** Timestamp root certificates trusted by Windows. */
2533	extern SUPTAENTRY const g_aSUPTimestampTAs[];
2534	/** Number of entries in g_aSUPTimestampTAs. */
2535	extern unsigned const g_cSUPTimestampTAs;
2536
2537	/** Root certificates trusted by Apple code signing. */
2538	extern SUPTAENTRY const g_aSUPAppleRootTAs[];
2539	/** Number of entries in g_cSUPAppleRootTAs. */
2540	extern unsigned const g_cSUPAppleRootTAs;
2541
2542	/** TAs we trust (the build certificate, Oracle VirtualBox). */
2543	extern SUPTAENTRY const g_aSUPTrustedTAs[];
2544	/** Number of entries in g_aSUPTrustedTAs. */
2545	extern unsigned const g_cSUPTrustedTAs;
2546
2547	/** Supplemental certificates, like cross signing certificates. */
2548	extern SUPTAENTRY const g_aSUPSupplementalTAs[];
2549	/** Number of entries in g_aSUPTrustedTAs. */
2550	extern unsigned const g_cSUPSupplementalTAs;
2551
2552	/** The build certificate. */
2553	extern const unsigned char g_abSUPBuildCert[];
2554	/** The size of the build certificate. */
2555	extern const unsigned g_cbSUPBuildCert;
2556
2557	/** @} */
2558
2559
2560	/** @} */
2561
2562	RT_C_DECLS_END
2563
2564	#endif /* !VBOX_INCLUDED_sup_h */
2565

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source: vbox/trunk/include/VBox/sup.h@ 87343

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