DBGFReg.cpp@ 37423

Last change on this file since 37423 was 36826, checked in by vboxsync, 14 years ago
DBGFReg.cpp: Fixed buffer overflow bug caused by using the wrong variable.
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1	/* $Id: DBGFReg.cpp 36826 2011-04-23 23:12:54Z vboxsync $ */
2	/** @file
3	* DBGF - Debugger Facility, Register Methods.
4	*/
5
6	/*
7	* Copyright (C) 2010-2011 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DBGF
23	#include <VBox/vmm/dbgf.h>
24	#include "DBGFInternal.h"
25	#include <VBox/vmm/mm.h>
26	#include <VBox/vmm/vm.h>
27	#include <VBox/param.h>
28	#include <VBox/err.h>
29	#include <VBox/log.h>
30	#include <iprt/ctype.h>
31	#include <iprt/string.h>
32	#include <iprt/uint128.h>
33
34
35	/*******************************************************************************
36	* Defined Constants And Macros *
37	*******************************************************************************/
38	/** Locks the register database for writing. */
39	#define DBGF_REG_DB_LOCK_WRITE(pVM) \
40	do { \
41	int rcSem = RTSemRWRequestWrite((pVM)->dbgf.s.hRegDbLock, RT_INDEFINITE_WAIT); \
42	AssertRC(rcSem); \
43	} while (0)
44
45	/** Unlocks the register database after writing. */
46	#define DBGF_REG_DB_UNLOCK_WRITE(pVM) \
47	do { \
48	int rcSem = RTSemRWReleaseWrite((pVM)->dbgf.s.hRegDbLock); \
49	AssertRC(rcSem); \
50	} while (0)
51
52	/** Locks the register database for reading. */
53	#define DBGF_REG_DB_LOCK_READ(pVM) \
54	do { \
55	int rcSem = RTSemRWRequestRead((pVM)->dbgf.s.hRegDbLock, RT_INDEFINITE_WAIT); \
56	AssertRC(rcSem); \
57	} while (0)
58
59	/** Unlocks the register database after reading. */
60	#define DBGF_REG_DB_UNLOCK_READ(pVM) \
61	do { \
62	int rcSem = RTSemRWReleaseRead((pVM)->dbgf.s.hRegDbLock); \
63	AssertRC(rcSem); \
64	} while (0)
65
66
67	/** The max length of a set, register or sub-field name. */
68	#define DBGF_REG_MAX_NAME 40
69
70
71	/*******************************************************************************
72	* Structures and Typedefs *
73	*******************************************************************************/
74	/**
75	* Register set registration record type.
76	*/
77	typedef enum DBGFREGSETTYPE
78	{
79	/** Invalid zero value. */
80	DBGFREGSETTYPE_INVALID = 0,
81	/** CPU record. */
82	DBGFREGSETTYPE_CPU,
83	/** Device record. */
84	DBGFREGSETTYPE_DEVICE,
85	/** End of valid record types. */
86	DBGFREGSETTYPE_END
87	} DBGFREGSETTYPE;
88
89
90	/**
91	* Register set registration record.
92	*/
93	typedef struct DBGFREGSET
94	{
95	/** String space core. */
96	RTSTRSPACECORE Core;
97	/** The registration record type. */
98	DBGFREGSETTYPE enmType;
99	/** The user argument for the callbacks. */
100	union
101	{
102	/** The CPU view. */
103	PVMCPU pVCpu;
104	/** The device view. */
105	PPDMDEVINS pDevIns;
106	/** The general view. */
107	void *pv;
108	} uUserArg;
109
110	/** The register descriptors. */
111	PCDBGFREGDESC paDescs;
112	/** The number of register descriptors. */
113	uint32_t cDescs;
114
115	/** Array of lookup records.
116	* The first part of the array runs parallel to paDescs, the rest are
117	* covering for aliases and bitfield variations. It's done this way to
118	* simplify the query all operations. */
119	struct DBGFREGLOOKUP *paLookupRecs;
120	/** The number of lookup records. */
121	uint32_t cLookupRecs;
122
123	/** The register name prefix. */
124	char szPrefix[1];
125	} DBGFREGSET;
126	/** Pointer to a register registration record. */
127	typedef DBGFREGSET *PDBGFREGSET;
128	/** Pointer to a const register registration record. */
129	typedef DBGFREGSET const *PCDBGFREGSET;
130
131
132	/**
133	* Register lookup record.
134	*/
135	typedef struct DBGFREGLOOKUP
136	{
137	/** The string space core. */
138	RTSTRSPACECORE Core;
139	/** Pointer to the set. */
140	PCDBGFREGSET pSet;
141	/** Pointer to the register descriptor. */
142	PCDBGFREGDESC pDesc;
143	/** If an alias this points to the alias descriptor, NULL if not. */
144	PCDBGFREGALIAS pAlias;
145	/** If a sub-field this points to the sub-field descriptor, NULL if not. */
146	PCDBGFREGSUBFIELD pSubField;
147	} DBGFREGLOOKUP;
148	/** Pointer to a register lookup record. */
149	typedef DBGFREGLOOKUP *PDBGFREGLOOKUP;
150	/** Pointer to a const register lookup record. */
151	typedef DBGFREGLOOKUP const *PCDBGFREGLOOKUP;
152
153
154	/**
155	* Argument packet from DBGFR3RegNmQueryAll to dbgfR3RegNmQueryAllWorker.
156	*/
157	typedef struct DBGFR3REGNMQUERYALLARGS
158	{
159	/** The output register array. */
160	PDBGFREGENTRYNM paRegs;
161	/** The number of entries in the output array. */
162	size_t cRegs;
163	/** The current register number when enumerating the string space. */
164	size_t iReg;
165	} DBGFR3REGNMQUERYALLARGS;
166	/** Pointer to a dbgfR3RegNmQueryAllWorker argument packet. */
167	typedef DBGFR3REGNMQUERYALLARGS *PDBGFR3REGNMQUERYALLARGS;
168
169
170	/**
171	* Argument packet passed by DBGFR3RegPrintfV to dbgfR3RegPrintfCbOutput and
172	* dbgfR3RegPrintfCbFormat.
173	*/
174	typedef struct DBGFR3REGPRINTFARGS
175	{
176	/** The VM handle. */
177	PVM pVM;
178	/** The target CPU. */
179	VMCPUID idCpu;
180	/** Set if we're looking at guest registers. */
181	bool fGuestRegs;
182	/** The output buffer. */
183	char *pszBuf;
184	/** The format string. */
185	const char *pszFormat;
186	/** The va list with format arguments. */
187	va_list va;
188
189	/** The current buffer offset. */
190	size_t offBuf;
191	/** The amount of buffer space left, not counting the terminator char. */
192	size_t cchLeftBuf;
193	/** The status code of the whole operation. First error is return,
194	* subsequent ones are suppressed. */
195	int rc;
196	} DBGFR3REGPRINTFARGS;
197	/** Pointer to a DBGFR3RegPrintfV argument packet. */
198	typedef DBGFR3REGPRINTFARGS *PDBGFR3REGPRINTFARGS;
199
200
201
202	/**
203	* Initializes the register database.
204	*
205	* @returns VBox status code.
206	* @param pVM The VM handle.
207	*/
208	int dbgfR3RegInit(PVM pVM)
209	{
210	int rc = VINF_SUCCESS;
211	if (!pVM->dbgf.s.fRegDbInitialized)
212	{
213	rc = RTSemRWCreate(&pVM->dbgf.s.hRegDbLock);
214	pVM->dbgf.s.fRegDbInitialized = RT_SUCCESS(rc);
215	}
216	return rc;
217	}
218
219
220	/**
221	* Terminates the register database.
222	*
223	* @param pVM The VM handle.
224	*/
225	void dbgfR3RegTerm(PVM pVM)
226	{
227	RTSemRWDestroy(pVM->dbgf.s.hRegDbLock);
228	pVM->dbgf.s.hRegDbLock = NIL_RTSEMRW;
229	pVM->dbgf.s.fRegDbInitialized = false;
230	}
231
232
233	/**
234	* Validates a register name.
235	*
236	* This is used for prefixes, aliases and field names.
237	*
238	* @returns true if valid, false if not.
239	* @param pszName The register name to validate.
240	* @param chDot Set to '.' if accepted, otherwise 0.
241	*/
242	static bool dbgfR3RegIsNameValid(const char *pszName, char chDot)
243	{
244	const char *psz = pszName;
245	if (!RT_C_IS_ALPHA(*psz))
246	return false;
247	char ch;
248	while ((ch = *++psz))
249	if ( !RT_C_IS_LOWER(ch)
250	&& !RT_C_IS_DIGIT(ch)
251	&& ch != '_'
252	&& ch != chDot)
253	return false;
254	if (psz - pszName > DBGF_REG_MAX_NAME)
255	return false;
256	return true;
257	}
258
259
260	/**
261	* Common worker for registering a register set.
262	*
263	* @returns VBox status code.
264	* @param pVM The VM handle.
265	* @param paRegisters The register descriptors.
266	* @param enmType The set type.
267	* @param pvUserArg The user argument for the callbacks.
268	* @param pszPrefix The name prefix.
269	* @param iInstance The instance number to be appended to @a
270	* pszPrefix when creating the set name.
271	*/
272	static int dbgfR3RegRegisterCommon(PVM pVM, PCDBGFREGDESC paRegisters, DBGFREGSETTYPE enmType, void *pvUserArg,
273	const char *pszPrefix, uint32_t iInstance)
274	{
275	/*
276	* Validate input.
277	*/
278	/* The name components. */
279	AssertMsgReturn(dbgfR3RegIsNameValid(pszPrefix, 0), ("%s\n", pszPrefix), VERR_INVALID_NAME);
280	const char *psz = RTStrEnd(pszPrefix, RTSTR_MAX);
281	bool const fNeedUnderscore = RT_C_IS_DIGIT(psz[-1]);
282	size_t const cchPrefix = psz - pszPrefix + fNeedUnderscore;
283	AssertMsgReturn(cchPrefix < RT_SIZEOFMEMB(DBGFREGSET, szPrefix) - 4 - 1, ("%s\n", pszPrefix), VERR_INVALID_NAME);
284
285	AssertMsgReturn(iInstance <= 9999, ("%d\n", iInstance), VERR_INVALID_NAME);
286
287	/* The descriptors. */
288	uint32_t cLookupRecs = 0;
289	uint32_t iDesc;
290	for (iDesc = 0; paRegisters[iDesc].pszName != NULL; iDesc++)
291	{
292	AssertMsgReturn(dbgfR3RegIsNameValid(paRegisters[iDesc].pszName, 0), ("%s (#%u)\n", paRegisters[iDesc].pszName, iDesc), VERR_INVALID_NAME);
293
294	if (enmType == DBGFREGSETTYPE_CPU)
295	AssertMsgReturn((unsigned)paRegisters[iDesc].enmReg == iDesc && iDesc < (unsigned)DBGFREG_END,
296	("%d iDesc=%d\n", paRegisters[iDesc].enmReg, iDesc),
297	VERR_INVALID_PARAMETER);
298	else
299	AssertReturn(paRegisters[iDesc].enmReg == DBGFREG_END, VERR_INVALID_PARAMETER);
300	AssertReturn( paRegisters[iDesc].enmType > DBGFREGVALTYPE_INVALID
301	&& paRegisters[iDesc].enmType < DBGFREGVALTYPE_END, VERR_INVALID_PARAMETER);
302	AssertMsgReturn(!(paRegisters[iDesc].fFlags & ~DBGFREG_FLAGS_READ_ONLY),
303	("%#x (#%u)\n", paRegisters[iDesc].fFlags, iDesc),
304	VERR_INVALID_PARAMETER);
305	AssertPtrReturn(paRegisters[iDesc].pfnGet, VERR_INVALID_PARAMETER);
306	AssertPtrReturn(paRegisters[iDesc].pfnSet, VERR_INVALID_PARAMETER);
307
308	uint32_t iAlias = 0;
309	PCDBGFREGALIAS paAliases = paRegisters[iDesc].paAliases;
310	if (paAliases)
311	{
312	AssertPtrReturn(paAliases, VERR_INVALID_PARAMETER);
313	for (; paAliases[iAlias].pszName; iAlias++)
314	{
315	AssertMsgReturn(dbgfR3RegIsNameValid(paAliases[iAlias].pszName, 0), ("%s (%s)\n", paAliases[iAlias].pszName, paRegisters[iDesc].pszName), VERR_INVALID_NAME);
316	AssertReturn( paAliases[iAlias].enmType > DBGFREGVALTYPE_INVALID
317	&& paAliases[iAlias].enmType < DBGFREGVALTYPE_END, VERR_INVALID_PARAMETER);
318	}
319	}
320
321	uint32_t iSubField = 0;
322	PCDBGFREGSUBFIELD paSubFields = paRegisters[iDesc].paSubFields;
323	if (paSubFields)
324	{
325	AssertPtrReturn(paSubFields, VERR_INVALID_PARAMETER);
326	for (; paSubFields[iSubField].pszName; iSubField++)
327	{
328	AssertMsgReturn(dbgfR3RegIsNameValid(paSubFields[iSubField].pszName, '.'), ("%s (%s)\n", paSubFields[iSubField].pszName, paRegisters[iDesc].pszName), VERR_INVALID_NAME);
329	AssertReturn(paSubFields[iSubField].iFirstBit + paSubFields[iSubField].cBits <= 128, VERR_INVALID_PARAMETER);
330	AssertReturn(paSubFields[iSubField].cBits + paSubFields[iSubField].cShift <= 128, VERR_INVALID_PARAMETER);
331	AssertPtrNullReturn(paSubFields[iSubField].pfnGet, VERR_INVALID_POINTER);
332	AssertPtrNullReturn(paSubFields[iSubField].pfnSet, VERR_INVALID_POINTER);
333	}
334	}
335
336	cLookupRecs += (1 + iAlias) * (1 + iSubField);
337	}
338
339	/* Check the instance number of the CPUs. */
340	AssertReturn(enmType != DBGFREGSETTYPE_CPU \|\| iInstance < pVM->cCpus, VERR_INVALID_CPU_ID);
341
342	/*
343	* Allocate a new record and all associated lookup records.
344	*/
345	size_t cbRegSet = RT_OFFSETOF(DBGFREGSET, szPrefix[cchPrefix + 4 + 1]);
346	cbRegSet = RT_ALIGN_Z(cbRegSet, 32);
347	size_t const offLookupRecArray = cbRegSet;
348	cbRegSet += cLookupRecs * sizeof(DBGFREGLOOKUP);
349
350	PDBGFREGSET pRegSet = (PDBGFREGSET)MMR3HeapAllocZ(pVM, MM_TAG_DBGF_REG, cbRegSet);
351	if (!pRegSet)
352	return VERR_NO_MEMORY;
353
354	/*
355	* Initialize the new record.
356	*/
357	pRegSet->Core.pszString = pRegSet->szPrefix;
358	pRegSet->enmType = enmType;
359	pRegSet->uUserArg.pv = pvUserArg;
360	pRegSet->paDescs = paRegisters;
361	pRegSet->cDescs = iDesc;
362	pRegSet->cLookupRecs = cLookupRecs;
363	pRegSet->paLookupRecs = (PDBGFREGLOOKUP)((uintptr_t)pRegSet + offLookupRecArray);
364	if (fNeedUnderscore)
365	RTStrPrintf(pRegSet->szPrefix, cchPrefix + 4 + 1, "%s_%u", pszPrefix, iInstance);
366	else
367	RTStrPrintf(pRegSet->szPrefix, cchPrefix + 4 + 1, "%s%u", pszPrefix, iInstance);
368
369
370	/*
371	* Initialize the lookup records. See DBGFREGSET::paLookupRecs.
372	*/
373	char szName[DBGF_REG_MAX_NAME * 3 + 16];
374	strcpy(szName, pRegSet->szPrefix);
375	char *pszReg = strchr(szName, '\0');
376	*pszReg++ = '.';
377
378	/* Array parallel to the descriptors. */
379	int rc = VINF_SUCCESS;
380	PDBGFREGLOOKUP pLookupRec = &pRegSet->paLookupRecs[0];
381	for (iDesc = 0; paRegisters[iDesc].pszName != NULL && RT_SUCCESS(rc); iDesc++)
382	{
383	strcpy(pszReg, paRegisters[iDesc].pszName);
384	pLookupRec->Core.pszString = MMR3HeapStrDup(pVM, MM_TAG_DBGF_REG, szName);
385	if (!pLookupRec->Core.pszString)
386	rc = VERR_NO_STR_MEMORY;
387	pLookupRec->pSet = pRegSet;
388	pLookupRec->pDesc = &paRegisters[iDesc];
389	pLookupRec->pAlias = NULL;
390	pLookupRec->pSubField = NULL;
391	pLookupRec++;
392	}
393
394	/* Aliases and sub-fields. */
395	for (iDesc = 0; paRegisters[iDesc].pszName != NULL && RT_SUCCESS(rc); iDesc++)
396	{
397	PCDBGFREGALIAS pCurAlias = NULL; /* first time we add sub-fields for the real name. */
398	PCDBGFREGALIAS pNextAlias = paRegisters[iDesc].paAliases;
399	const char *pszRegName = paRegisters[iDesc].pszName;
400	while (RT_SUCCESS(rc))
401	{
402	/* Add sub-field records. */
403	PCDBGFREGSUBFIELD paSubFields = paRegisters[iDesc].paSubFields;
404	if (paSubFields)
405	{
406	size_t cchReg = strlen(pszRegName);
407	memcpy(pszReg, pszRegName, cchReg);
408	char *pszSub = &pszReg[cchReg];
409	*pszSub++ = '.';
410	for (uint32_t iSubField = 0; paSubFields[iSubField].pszName && RT_SUCCESS(rc); iSubField++)
411	{
412	strcpy(pszSub, paSubFields[iSubField].pszName);
413	pLookupRec->Core.pszString = MMR3HeapStrDup(pVM, MM_TAG_DBGF_REG, szName);
414	if (!pLookupRec->Core.pszString)
415	rc = VERR_NO_STR_MEMORY;
416	pLookupRec->pSet = pRegSet;
417	pLookupRec->pDesc = &paRegisters[iDesc];
418	pLookupRec->pAlias = pCurAlias;
419	pLookupRec->pSubField = &paSubFields[iSubField];
420	pLookupRec++;
421	}
422	}
423
424	/* Advance to the next alias. */
425	pCurAlias = pNextAlias++;
426	if (!pCurAlias)
427	break;
428	pszRegName = pCurAlias->pszName;
429	if (!pszRegName)
430	break;
431
432	/* The alias record. */
433	strcpy(pszReg, pszRegName);
434	pLookupRec->Core.pszString = MMR3HeapStrDup(pVM, MM_TAG_DBGF_REG, szName);
435	if (!pLookupRec->Core.pszString)
436	rc = VERR_NO_STR_MEMORY;
437	pLookupRec->pSet = pRegSet;
438	pLookupRec->pDesc = &paRegisters[iDesc];
439	pLookupRec->pAlias = pCurAlias;
440	pLookupRec->pSubField = NULL;
441	pLookupRec++;
442	}
443	}
444	Assert(pLookupRec == &pRegSet->paLookupRecs[pRegSet->cLookupRecs]);
445
446	if (RT_SUCCESS(rc))
447	{
448	/*
449	* Insert the record into the register set string space and optionally into
450	* the CPU register set cache.
451	*/
452	DBGF_REG_DB_LOCK_WRITE(pVM);
453
454	bool fInserted = RTStrSpaceInsert(&pVM->dbgf.s.RegSetSpace, &pRegSet->Core);
455	if (fInserted)
456	{
457	pVM->dbgf.s.cRegs += pRegSet->cDescs;
458	if (enmType == DBGFREGSETTYPE_CPU)
459	{
460	if (pRegSet->cDescs > DBGFREG_ALL_COUNT)
461	pVM->dbgf.s.cRegs -= pRegSet->cDescs - DBGFREG_ALL_COUNT;
462	if (!strcmp(pszPrefix, "cpu"))
463	pVM->aCpus[iInstance].dbgf.s.pGuestRegSet = pRegSet;
464	else
465	pVM->aCpus[iInstance].dbgf.s.pHyperRegSet = pRegSet;
466	}
467
468	PDBGFREGLOOKUP paLookupRecs = pRegSet->paLookupRecs;
469	uint32_t iLookupRec = pRegSet->cLookupRecs;
470	while (iLookupRec-- > 0)
471	{
472	bool fInserted2 = RTStrSpaceInsert(&pVM->dbgf.s.RegSpace, &paLookupRecs[iLookupRec].Core);
473	AssertMsg(fInserted2, ("'%s'", paLookupRecs[iLookupRec].Core.pszString));
474	}
475
476	DBGF_REG_DB_UNLOCK_WRITE(pVM);
477	return VINF_SUCCESS;
478	}
479
480	DBGF_REG_DB_UNLOCK_WRITE(pVM);
481	rc = VERR_DUPLICATE;
482	}
483
484	/*
485	* Bail out.
486	*/
487	for (uint32_t i = 0; i < pRegSet->cLookupRecs; i++)
488	MMR3HeapFree((char *)pRegSet->paLookupRecs[i].Core.pszString);
489	MMR3HeapFree(pRegSet);
490
491	return rc;
492	}
493
494
495	/**
496	* Registers a set of registers for a CPU.
497	*
498	* @returns VBox status code.
499	* @param pVM The VM handle.
500	* @param pVCpu The virtual CPU handle.
501	* @param paRegisters The register descriptors.
502	* @param fGuestRegs Set if it's the guest registers, clear if
503	* hypervisor registers.
504	*/
505	VMMR3_INT_DECL(int) DBGFR3RegRegisterCpu(PVM pVM, PVMCPU pVCpu, PCDBGFREGDESC paRegisters, bool fGuestRegs)
506	{
507	if (!pVM->dbgf.s.fRegDbInitialized)
508	{
509	int rc = dbgfR3RegInit(pVM);
510	if (RT_FAILURE(rc))
511	return rc;
512	}
513
514	return dbgfR3RegRegisterCommon(pVM, paRegisters, DBGFREGSETTYPE_CPU, pVCpu, fGuestRegs ? "cpu" : "hypercpu", pVCpu->idCpu);
515	}
516
517
518	/**
519	* Registers a set of registers for a device.
520	*
521	* @returns VBox status code.
522	* @param enmReg The register identifier.
523	* @param enmType The register type. This is for sort out
524	* aliases. Pass DBGFREGVALTYPE_INVALID to get
525	* the standard name.
526	*/
527	VMMR3DECL(int) DBGFR3RegRegisterDevice(PVM pVM, PCDBGFREGDESC paRegisters, PPDMDEVINS pDevIns, const char *pszPrefix, uint32_t iInstance)
528	{
529	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
530	AssertPtrReturn(paRegisters, VERR_INVALID_POINTER);
531	AssertPtrReturn(pDevIns, VERR_INVALID_POINTER);
532	AssertPtrReturn(pszPrefix, VERR_INVALID_POINTER);
533
534	return dbgfR3RegRegisterCommon(pVM, paRegisters, DBGFREGSETTYPE_DEVICE, pDevIns, pszPrefix, iInstance);
535	}
536
537
538	/**
539	* Clears the register value variable.
540	*
541	* @param pValue The variable to clear.
542	*/
543	DECLINLINE(void) dbgfR3RegValClear(PDBGFREGVAL pValue)
544	{
545	pValue->au64[0] = 0;
546	pValue->au64[1] = 0;
547	}
548
549
550	/**
551	* Sets a 80-bit floating point variable to a 64-bit unsigned interger value.
552	*
553	* @param pValue The value.
554	* @param u64 The integer value.
555	*/
556	DECLINLINE(void) dbgfR3RegValR80SetU64(PDBGFREGVAL pValue, uint64_t u64)
557	{
558	/** @todo fixme */
559	pValue->r80.s.fSign = 0;
560	pValue->r80.s.uExponent = 16383;
561	pValue->r80.s.u64Mantissa = u64;
562	}
563
564
565	/**
566	* Sets a 80-bit floating point variable to a 64-bit unsigned interger value.
567	*
568	* @param pValue The value.
569	* @param u128 The integer value.
570	*/
571	DECLINLINE(void) dbgfR3RegValR80SetU128(PDBGFREGVAL pValue, RTUINT128U u128)
572	{
573	/** @todo fixme */
574	pValue->r80.s.fSign = 0;
575	pValue->r80.s.uExponent = 16383;
576	pValue->r80.s.u64Mantissa = u128.s.Lo;
577	}
578
579
580	/**
581	* Get a 80-bit floating point variable as a 64-bit unsigned integer.
582	*
583	* @returns 64-bit unsigned integer.
584	* @param pValue The value.
585	*/
586	DECLINLINE(uint64_t) dbgfR3RegValR80GetU64(PCDBGFREGVAL pValue)
587	{
588	/** @todo stupid, stupid MSC. */
589	return pValue->r80.s.u64Mantissa;
590	}
591
592
593	/**
594	* Get a 80-bit floating point variable as a 128-bit unsigned integer.
595	*
596	* @returns 128-bit unsigned integer.
597	* @param pValue The value.
598	*/
599	DECLINLINE(RTUINT128U) dbgfR3RegValR80GetU128(PCDBGFREGVAL pValue)
600	{
601	/** @todo stupid, stupid MSC. */
602	RTUINT128U uRet;
603	#if 0
604	uRet.s.Lo = (uint64_t)InVal.lrd;
605	uRet.s.Hi = (uint64_t)InVal.lrd / _4G / _4G;
606	#else
607	uRet.s.Lo = pValue->r80.s.u64Mantissa;
608	uRet.s.Hi = 0;
609	#endif
610	return uRet;
611	}
612
613
614	/**
615	* Performs a cast between register value types.
616	*
617	* @retval VINF_SUCCESS
618	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
619	* @retval VINF_DBGF_TRUNCATED_REGISTER
620	* @retval VERR_DBGF_UNSUPPORTED_CAST
621	*
622	* @param pValue The value to cast (input + output).
623	* @param enmFromType The input value.
624	* @param enmToType The desired output value.
625	*/
626	static int dbgfR3RegValCast(PDBGFREGVAL pValue, DBGFREGVALTYPE enmFromType, DBGFREGVALTYPE enmToType)
627	{
628	DBGFREGVAL const InVal = *pValue;
629	dbgfR3RegValClear(pValue);
630
631	/* Note! No default cases here as gcc warnings about missing enum values
632	are desired. */
633	switch (enmFromType)
634	{
635	case DBGFREGVALTYPE_U8:
636	switch (enmToType)
637	{
638	case DBGFREGVALTYPE_U8: pValue->u8 = InVal.u8; return VINF_SUCCESS;
639	case DBGFREGVALTYPE_U16: pValue->u16 = InVal.u8; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
640	case DBGFREGVALTYPE_U32: pValue->u32 = InVal.u8; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
641	case DBGFREGVALTYPE_U64: pValue->u64 = InVal.u8; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
642	case DBGFREGVALTYPE_U128: pValue->u128.s.Lo = InVal.u8; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
643	case DBGFREGVALTYPE_R80: dbgfR3RegValR80SetU64(pValue, InVal.u8); return VINF_DBGF_ZERO_EXTENDED_REGISTER;
644	case DBGFREGVALTYPE_DTR: return VERR_DBGF_UNSUPPORTED_CAST;
645
646	case DBGFREGVALTYPE_32BIT_HACK:
647	case DBGFREGVALTYPE_END:
648	case DBGFREGVALTYPE_INVALID:
649	break;
650	}
651	break;
652
653	case DBGFREGVALTYPE_U16:
654	switch (enmToType)
655	{
656	case DBGFREGVALTYPE_U8: pValue->u8 = InVal.u16; return VINF_DBGF_TRUNCATED_REGISTER;
657	case DBGFREGVALTYPE_U16: pValue->u16 = InVal.u16; return VINF_SUCCESS;
658	case DBGFREGVALTYPE_U32: pValue->u32 = InVal.u16; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
659	case DBGFREGVALTYPE_U64: pValue->u64 = InVal.u16; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
660	case DBGFREGVALTYPE_U128: pValue->u128.s.Lo = InVal.u16; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
661	case DBGFREGVALTYPE_R80: dbgfR3RegValR80SetU64(pValue, InVal.u16); return VINF_DBGF_ZERO_EXTENDED_REGISTER;
662	case DBGFREGVALTYPE_DTR: return VERR_DBGF_UNSUPPORTED_CAST;
663
664	case DBGFREGVALTYPE_32BIT_HACK:
665	case DBGFREGVALTYPE_END:
666	case DBGFREGVALTYPE_INVALID:
667	break;
668	}
669	break;
670
671	case DBGFREGVALTYPE_U32:
672	switch (enmToType)
673	{
674	case DBGFREGVALTYPE_U8: pValue->u8 = InVal.u32; return VINF_DBGF_TRUNCATED_REGISTER;
675	case DBGFREGVALTYPE_U16: pValue->u16 = InVal.u32; return VINF_DBGF_TRUNCATED_REGISTER;
676	case DBGFREGVALTYPE_U32: pValue->u32 = InVal.u32; return VINF_SUCCESS;
677	case DBGFREGVALTYPE_U64: pValue->u64 = InVal.u32; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
678	case DBGFREGVALTYPE_U128: pValue->u128.s.Lo = InVal.u32; return VINF_DBGF_ZERO_EXTENDED_REGISTER;
679	case DBGFREGVALTYPE_R80: dbgfR3RegValR80SetU64(pValue, InVal.u32); return VINF_DBGF_ZERO_EXTENDED_REGISTER;
680	case DBGFREGVALTYPE_DTR: return VERR_DBGF_UNSUPPORTED_CAST;
681
682	case DBGFREGVALTYPE_32BIT_HACK:
683	case DBGFREGVALTYPE_END:
684	case DBGFREGVALTYPE_INVALID:
685	break;
686	}
687	break;
688
689	case DBGFREGVALTYPE_U64:
690	switch (enmToType)
691	{
692	case DBGFREGVALTYPE_U8: pValue->u8 = InVal.u64; return VINF_DBGF_TRUNCATED_REGISTER;
693	case DBGFREGVALTYPE_U16: pValue->u16 = InVal.u64; return VINF_DBGF_TRUNCATED_REGISTER;
694	case DBGFREGVALTYPE_U32: pValue->u32 = InVal.u64; return VINF_DBGF_TRUNCATED_REGISTER;
695	case DBGFREGVALTYPE_U64: pValue->u64 = InVal.u64; return VINF_SUCCESS;
696	case DBGFREGVALTYPE_U128: pValue->u128.s.Lo = InVal.u64; return VINF_DBGF_TRUNCATED_REGISTER;
697	case DBGFREGVALTYPE_R80: dbgfR3RegValR80SetU64(pValue, InVal.u64); return VINF_DBGF_TRUNCATED_REGISTER;
698	case DBGFREGVALTYPE_DTR: return VERR_DBGF_UNSUPPORTED_CAST;
699
700	case DBGFREGVALTYPE_32BIT_HACK:
701	case DBGFREGVALTYPE_END:
702	case DBGFREGVALTYPE_INVALID:
703	break;
704	}
705	break;
706
707	case DBGFREGVALTYPE_U128:
708	switch (enmToType)
709	{
710	case DBGFREGVALTYPE_U8: pValue->u8 = InVal.u128.s.Lo; return VINF_DBGF_TRUNCATED_REGISTER;
711	case DBGFREGVALTYPE_U16: pValue->u16 = InVal.u128.s.Lo; return VINF_DBGF_TRUNCATED_REGISTER;
712	case DBGFREGVALTYPE_U32: pValue->u32 = InVal.u128.s.Lo; return VINF_DBGF_TRUNCATED_REGISTER;
713	case DBGFREGVALTYPE_U64: pValue->u64 = InVal.u128.s.Lo; return VINF_DBGF_TRUNCATED_REGISTER;
714	case DBGFREGVALTYPE_U128: pValue->u128 = InVal.u128; return VINF_SUCCESS;
715	case DBGFREGVALTYPE_R80: dbgfR3RegValR80SetU128(pValue, InVal.u128); return VINF_DBGF_TRUNCATED_REGISTER;
716	case DBGFREGVALTYPE_DTR: return VERR_DBGF_UNSUPPORTED_CAST;
717
718	case DBGFREGVALTYPE_32BIT_HACK:
719	case DBGFREGVALTYPE_END:
720	case DBGFREGVALTYPE_INVALID:
721	break;
722	}
723	break;
724
725	case DBGFREGVALTYPE_R80:
726	switch (enmToType)
727	{
728	case DBGFREGVALTYPE_U8: pValue->u8 = (uint8_t )dbgfR3RegValR80GetU64(&InVal); return VINF_DBGF_TRUNCATED_REGISTER;
729	case DBGFREGVALTYPE_U16: pValue->u16 = (uint16_t)dbgfR3RegValR80GetU64(&InVal); return VINF_DBGF_TRUNCATED_REGISTER;
730	case DBGFREGVALTYPE_U32: pValue->u32 = (uint32_t)dbgfR3RegValR80GetU64(&InVal); return VINF_DBGF_TRUNCATED_REGISTER;
731	case DBGFREGVALTYPE_U64: pValue->u64 = (uint64_t)dbgfR3RegValR80GetU64(&InVal); return VINF_DBGF_TRUNCATED_REGISTER;
732	case DBGFREGVALTYPE_U128: pValue->u128 = dbgfR3RegValR80GetU128(&InVal); return VINF_DBGF_TRUNCATED_REGISTER;
733	case DBGFREGVALTYPE_R80: pValue->r80 = InVal.r80; return VINF_SUCCESS;
734	case DBGFREGVALTYPE_DTR: return VERR_DBGF_UNSUPPORTED_CAST;
735
736	case DBGFREGVALTYPE_32BIT_HACK:
737	case DBGFREGVALTYPE_END:
738	case DBGFREGVALTYPE_INVALID:
739	break;
740	}
741	break;
742
743	case DBGFREGVALTYPE_DTR:
744	switch (enmToType)
745	{
746	case DBGFREGVALTYPE_U8: pValue->u8 = InVal.dtr.u64Base; return VINF_DBGF_TRUNCATED_REGISTER;
747	case DBGFREGVALTYPE_U16: pValue->u16 = InVal.dtr.u64Base; return VINF_DBGF_TRUNCATED_REGISTER;
748	case DBGFREGVALTYPE_U32: pValue->u32 = InVal.dtr.u64Base; return VINF_DBGF_TRUNCATED_REGISTER;
749	case DBGFREGVALTYPE_U64: pValue->u64 = InVal.dtr.u64Base; return VINF_DBGF_TRUNCATED_REGISTER;
750	case DBGFREGVALTYPE_U128: pValue->u128.s.Lo = InVal.dtr.u64Base; return VINF_DBGF_TRUNCATED_REGISTER;
751	case DBGFREGVALTYPE_R80: dbgfR3RegValR80SetU64(pValue, InVal.dtr.u64Base); return VINF_DBGF_TRUNCATED_REGISTER;
752	case DBGFREGVALTYPE_DTR: pValue->dtr = InVal.dtr; return VINF_SUCCESS;
753
754	case DBGFREGVALTYPE_32BIT_HACK:
755	case DBGFREGVALTYPE_END:
756	case DBGFREGVALTYPE_INVALID:
757	break;
758	}
759	break;
760
761	case DBGFREGVALTYPE_INVALID:
762	case DBGFREGVALTYPE_END:
763	case DBGFREGVALTYPE_32BIT_HACK:
764	break;
765	}
766
767	AssertMsgFailed(("%d / %d\n", enmFromType, enmToType));
768	return VERR_DBGF_UNSUPPORTED_CAST;
769	}
770
771
772	/**
773	* Worker for the CPU register queries.
774	*
775	* @returns VBox status code.
776	* @retval VINF_SUCCESS
777	* @retval VERR_INVALID_VM_HANDLE
778	* @retval VERR_INVALID_CPU_ID
779	* @retval VERR_DBGF_REGISTER_NOT_FOUND
780	* @retval VERR_DBGF_UNSUPPORTED_CAST
781	* @retval VINF_DBGF_TRUNCATED_REGISTER
782	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
783	*
784	* @param pVM The VM handle.
785	* @param idCpu The virtual CPU ID.
786	* @param enmReg The register to query.
787	* @param enmType The desired return type.
788	* @param fGuestRegs Query guest CPU registers if set (true),
789	* hypervisor CPU registers if clear (false).
790	* @param pValue Where to return the register value.
791	*/
792	static DECLCALLBACK(int) dbgfR3RegCpuQueryWorkerOnCpu(PVM pVM, VMCPUID idCpu, DBGFREG enmReg, DBGFREGVALTYPE enmType,
793	bool fGuestRegs, PDBGFREGVAL pValue)
794	{
795	int rc = VINF_SUCCESS;
796	DBGF_REG_DB_LOCK_READ(pVM);
797
798	/*
799	* Look up the register set of the specified CPU.
800	*/
801	PDBGFREGSET pSet = fGuestRegs
802	? pVM->aCpus[idCpu].dbgf.s.pGuestRegSet
803	: pVM->aCpus[idCpu].dbgf.s.pHyperRegSet;
804	if (RT_LIKELY(pSet))
805	{
806	/*
807	* Look up the register and get the register value.
808	*/
809	if (RT_LIKELY(pSet->cDescs > (size_t)enmReg))
810	{
811	PCDBGFREGDESC pDesc = &pSet->paDescs[enmReg];
812
813	pValue->au64[0] = pValue->au64[1] = 0;
814	rc = pDesc->pfnGet(pSet->uUserArg.pv, pDesc, pValue);
815	if (RT_SUCCESS(rc))
816	{
817	/*
818	* Do the cast if the desired return type doesn't match what
819	* the getter returned.
820	*/
821	if (pDesc->enmType == enmType)
822	rc = VINF_SUCCESS;
823	else
824	rc = dbgfR3RegValCast(pValue, pDesc->enmType, enmType);
825	}
826	}
827	else
828	rc = VERR_DBGF_REGISTER_NOT_FOUND;
829	}
830	else
831	rc = VERR_INVALID_CPU_ID;
832
833	DBGF_REG_DB_UNLOCK_READ(pVM);
834	return rc;
835	}
836
837
838	/**
839	* Internal worker for the CPU register query functions.
840	*
841	* @returns VBox status code.
842	* @retval VINF_SUCCESS
843	* @retval VERR_INVALID_VM_HANDLE
844	* @retval VERR_INVALID_CPU_ID
845	* @retval VERR_DBGF_REGISTER_NOT_FOUND
846	* @retval VERR_DBGF_UNSUPPORTED_CAST
847	* @retval VINF_DBGF_TRUNCATED_REGISTER
848	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
849	*
850	* @param pVM The VM handle.
851	* @param idCpu The virtual CPU ID. Can be OR'ed with
852	* DBGFREG_HYPER_VMCPUID.
853	* @param enmReg The register to query.
854	* @param enmType The desired return type.
855	* @param pValue Where to return the register value.
856	*/
857	static int dbgfR3RegCpuQueryWorker(PVM pVM, VMCPUID idCpu, DBGFREG enmReg, DBGFREGVALTYPE enmType, PDBGFREGVAL pValue)
858	{
859	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
860	AssertMsgReturn(enmReg >= DBGFREG_AL && enmReg <= DBGFREG_END, ("%d\n", enmReg), VERR_INVALID_PARAMETER);
861
862	bool const fGuestRegs = !(idCpu & DBGFREG_HYPER_VMCPUID);
863	idCpu &= ~DBGFREG_HYPER_VMCPUID;
864	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
865
866	return VMR3ReqCallWait(pVM, idCpu, (PFNRT)dbgfR3RegCpuQueryWorkerOnCpu, 6,
867	pVM, idCpu, enmReg, enmType, fGuestRegs, pValue);
868	}
869
870
871	/**
872	* Queries a 8-bit CPU register value.
873	*
874	* @retval VINF_SUCCESS
875	* @retval VERR_INVALID_VM_HANDLE
876	* @retval VERR_INVALID_CPU_ID
877	* @retval VERR_DBGF_REGISTER_NOT_FOUND
878	* @retval VERR_DBGF_UNSUPPORTED_CAST
879	* @retval VINF_DBGF_TRUNCATED_REGISTER
880	*
881	* @param pVM The VM handle.
882	* @param idCpu The target CPU ID. Can be OR'ed with
883	* DBGFREG_HYPER_VMCPUID.
884	* @param enmReg The register that's being queried.
885	* @param pu8 Where to store the register value.
886	*/
887	VMMR3DECL(int) DBGFR3RegCpuQueryU8(PVM pVM, VMCPUID idCpu, DBGFREG enmReg, uint8_t *pu8)
888	{
889	DBGFREGVAL Value;
890	int rc = dbgfR3RegCpuQueryWorker(pVM, idCpu, enmReg, DBGFREGVALTYPE_U8, &Value);
891	if (RT_SUCCESS(rc))
892	*pu8 = Value.u8;
893	else
894	*pu8 = 0;
895	return rc;
896	}
897
898
899	/**
900	* Queries a 16-bit CPU register value.
901	*
902	* @retval VINF_SUCCESS
903	* @retval VERR_INVALID_VM_HANDLE
904	* @retval VERR_INVALID_CPU_ID
905	* @retval VERR_DBGF_REGISTER_NOT_FOUND
906	* @retval VERR_DBGF_UNSUPPORTED_CAST
907	* @retval VINF_DBGF_TRUNCATED_REGISTER
908	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
909	*
910	* @param pVM The VM handle.
911	* @param idCpu The target CPU ID. Can be OR'ed with
912	* DBGFREG_HYPER_VMCPUID.
913	* @param enmReg The register that's being queried.
914	* @param pu16 Where to store the register value.
915	*/
916	VMMR3DECL(int) DBGFR3RegCpuQueryU16(PVM pVM, VMCPUID idCpu, DBGFREG enmReg, uint16_t *pu16)
917	{
918	DBGFREGVAL Value;
919	int rc = dbgfR3RegCpuQueryWorker(pVM, idCpu, enmReg, DBGFREGVALTYPE_U16, &Value);
920	if (RT_SUCCESS(rc))
921	*pu16 = Value.u16;
922	else
923	*pu16 = 0;
924	return rc;
925	}
926
927
928	/**
929	* Queries a 32-bit CPU register value.
930	*
931	* @retval VINF_SUCCESS
932	* @retval VERR_INVALID_VM_HANDLE
933	* @retval VERR_INVALID_CPU_ID
934	* @retval VERR_DBGF_REGISTER_NOT_FOUND
935	* @retval VERR_DBGF_UNSUPPORTED_CAST
936	* @retval VINF_DBGF_TRUNCATED_REGISTER
937	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
938	*
939	* @param pVM The VM handle.
940	* @param idCpu The target CPU ID. Can be OR'ed with
941	* DBGFREG_HYPER_VMCPUID.
942	* @param enmReg The register that's being queried.
943	* @param pu32 Where to store the register value.
944	*/
945	VMMR3DECL(int) DBGFR3RegCpuQueryU32(PVM pVM, VMCPUID idCpu, DBGFREG enmReg, uint32_t *pu32)
946	{
947	DBGFREGVAL Value;
948	int rc = dbgfR3RegCpuQueryWorker(pVM, idCpu, enmReg, DBGFREGVALTYPE_U32, &Value);
949	if (RT_SUCCESS(rc))
950	*pu32 = Value.u32;
951	else
952	*pu32 = 0;
953	return rc;
954	}
955
956
957	/**
958	* Queries a 64-bit CPU register value.
959	*
960	* @retval VINF_SUCCESS
961	* @retval VERR_INVALID_VM_HANDLE
962	* @retval VERR_INVALID_CPU_ID
963	* @retval VERR_DBGF_REGISTER_NOT_FOUND
964	* @retval VERR_DBGF_UNSUPPORTED_CAST
965	* @retval VINF_DBGF_TRUNCATED_REGISTER
966	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
967	*
968	* @param pVM The VM handle.
969	* @param idCpu The target CPU ID. Can be OR'ed with
970	* DBGFREG_HYPER_VMCPUID.
971	* @param enmReg The register that's being queried.
972	* @param pu64 Where to store the register value.
973	*/
974	VMMR3DECL(int) DBGFR3RegCpuQueryU64(PVM pVM, VMCPUID idCpu, DBGFREG enmReg, uint64_t *pu64)
975	{
976	DBGFREGVAL Value;
977	int rc = dbgfR3RegCpuQueryWorker(pVM, idCpu, enmReg, DBGFREGVALTYPE_U64, &Value);
978	if (RT_SUCCESS(rc))
979	*pu64 = Value.u64;
980	else
981	*pu64 = 0;
982	return rc;
983	}
984
985	#if 0 /* rewrite / remove */
986
987	/**
988	* Wrapper around CPUMQueryGuestMsr for dbgfR3RegCpuQueryBatchWorker.
989	*
990	* @retval VINF_SUCCESS
991	* @retval VERR_DBGF_REGISTER_NOT_FOUND
992	*
993	* @param pVCpu The current CPU.
994	* @param pReg The where to store the register value and
995	* size.
996	* @param idMsr The MSR to get.
997	*/
998	static void dbgfR3RegGetMsrBatch(PVMCPU pVCpu, PDBGFREGENTRY pReg, uint32_t idMsr)
999	{
1000	pReg->enmType = DBGFREGVALTYPE_U64;
1001	int rc = CPUMQueryGuestMsr(pVCpu, idMsr, &pReg->Val.u64);
1002	if (RT_FAILURE(rc))
1003	{
1004	AssertMsg(rc == VERR_CPUM_RAISE_GP_0, ("%Rrc\n", rc));
1005	pReg->Val.u64 = 0;
1006	}
1007	}
1008
1009
1010	static DECLCALLBACK(int) dbgfR3RegCpuQueryBatchWorker(PVM pVM, VMCPUID idCpu, PDBGFREGENTRY paRegs, size_t cRegs)
1011	{
1012	#if 0
1013	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1014	PCCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1015
1016	PDBGFREGENTRY pReg = paRegs - 1;
1017	while (cRegs-- > 0)
1018	{
1019	pReg++;
1020	pReg->Val.au64[0] = 0;
1021	pReg->Val.au64[1] = 0;
1022
1023	DBGFREG const enmReg = pReg->enmReg;
1024	AssertMsgReturn(enmReg >= 0 && enmReg <= DBGFREG_END, ("%d (%#x)\n", enmReg, enmReg), VERR_DBGF_REGISTER_NOT_FOUND);
1025	if (enmReg != DBGFREG_END)
1026	{
1027	PCDBGFREGDESC pDesc = &g_aDbgfRegDescs[enmReg];
1028	if (!pDesc->pfnGet)
1029	{
1030	PCRTUINT128U pu = (PCRTUINT128U)((uintptr_t)pCtx + pDesc->offCtx);
1031	pReg->enmType = pDesc->enmType;
1032	switch (pDesc->enmType)
1033	{
1034	case DBGFREGVALTYPE_U8: pReg->Val.u8 = pu->au8[0]; break;
1035	case DBGFREGVALTYPE_U16: pReg->Val.u16 = pu->au16[0]; break;
1036	case DBGFREGVALTYPE_U32: pReg->Val.u32 = pu->au32[0]; break;
1037	case DBGFREGVALTYPE_U64: pReg->Val.u64 = pu->au64[0]; break;
1038	case DBGFREGVALTYPE_U128:
1039	pReg->Val.au64[0] = pu->au64[0];
1040	pReg->Val.au64[1] = pu->au64[1];
1041	break;
1042	case DBGFREGVALTYPE_R80:
1043	pReg->Val.au64[0] = pu->au64[0];
1044	pReg->Val.au16[5] = pu->au16[5];
1045	break;
1046	default:
1047	AssertMsgFailedReturn(("%s %d\n", pDesc->pszName, pDesc->enmType), VERR_INTERNAL_ERROR_3);
1048	}
1049	}
1050	else
1051	{
1052	int rc = pDesc->pfnGet(pVCpu, pDesc, pCtx, &pReg->Val.u);
1053	if (RT_FAILURE(rc))
1054	return rc;
1055	}
1056	}
1057	}
1058	return VINF_SUCCESS;
1059	#else
1060	return VERR_NOT_IMPLEMENTED;
1061	#endif
1062	}
1063
1064
1065	/**
1066	* Query a batch of registers.
1067	*
1068	* @retval VINF_SUCCESS
1069	* @retval VERR_INVALID_VM_HANDLE
1070	* @retval VERR_INVALID_CPU_ID
1071	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1072	*
1073	* @param pVM The VM handle.
1074	* @param idCpu The target CPU ID. Can be OR'ed with
1075	* DBGFREG_HYPER_VMCPUID.
1076	* @param paRegs Pointer to an array of @a cRegs elements. On
1077	* input the enmReg members indicates which
1078	* registers to query. On successful return the
1079	* other members are set. DBGFREG_END can be used
1080	* as a filler.
1081	* @param cRegs The number of entries in @a paRegs.
1082	*/
1083	VMMR3DECL(int) DBGFR3RegCpuQueryBatch(PVM pVM, VMCPUID idCpu, PDBGFREGENTRY paRegs, size_t cRegs)
1084	{
1085	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1086	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
1087	if (!cRegs)
1088	return VINF_SUCCESS;
1089	AssertReturn(cRegs < _1M, VERR_OUT_OF_RANGE);
1090	AssertPtrReturn(paRegs, VERR_INVALID_POINTER);
1091	size_t iReg = cRegs;
1092	while (iReg-- > 0)
1093	{
1094	DBGFREG enmReg = paRegs[iReg].enmReg;
1095	AssertMsgReturn(enmReg < DBGFREG_END && enmReg >= DBGFREG_AL, ("%d (%#x)", enmReg, enmReg), VERR_DBGF_REGISTER_NOT_FOUND);
1096	}
1097
1098	return VMR3ReqCallWait(pVM, idCpu, (PFNRT)dbgfR3RegCpuQueryBatchWorker, 4, pVM, idCpu, paRegs, cRegs);
1099	}
1100
1101
1102	/**
1103	* Query all registers for a Virtual CPU.
1104	*
1105	* @retval VINF_SUCCESS
1106	* @retval VERR_INVALID_VM_HANDLE
1107	* @retval VERR_INVALID_CPU_ID
1108	*
1109	* @param pVM The VM handle.
1110	* @param idCpu The target CPU ID. Can be OR'ed with
1111	* DBGFREG_HYPER_VMCPUID.
1112	* @param paRegs Pointer to an array of @a cRegs elements.
1113	* These will be filled with the CPU register
1114	* values. Overflowing entries will be set to
1115	* DBGFREG_END. The returned registers can be
1116	* accessed by using the DBGFREG values as index.
1117	* @param cRegs The number of entries in @a paRegs. The
1118	* recommended value is DBGFREG_ALL_COUNT.
1119	*/
1120	VMMR3DECL(int) DBGFR3RegCpuQueryAll(PVM pVM, VMCPUID idCpu, PDBGFREGENTRY paRegs, size_t cRegs)
1121	{
1122	/*
1123	* Validate input.
1124	*/
1125	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1126	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
1127	if (!cRegs)
1128	return VINF_SUCCESS;
1129	AssertReturn(cRegs < _1M, VERR_OUT_OF_RANGE);
1130	AssertPtrReturn(paRegs, VERR_INVALID_POINTER);
1131
1132	/*
1133	* Convert it into a batch query (lazy bird).
1134	*/
1135	unsigned iReg = 0;
1136	while (iReg < cRegs && iReg < DBGFREG_ALL_COUNT)
1137	{
1138	paRegs[iReg].enmReg = (DBGFREG)iReg;
1139	iReg++;
1140	}
1141	while (iReg < cRegs)
1142	paRegs[iReg++].enmReg = DBGFREG_END;
1143
1144	return VMR3ReqCallWait(pVM, idCpu, (PFNRT)dbgfR3RegCpuQueryBatchWorker, 4, pVM, idCpu, paRegs, cRegs);
1145	}
1146
1147	#endif /* rewrite or remove? */
1148
1149	/**
1150	* Gets the name of a register.
1151	*
1152	* @returns Pointer to read-only register name (lower case). NULL if the
1153	* parameters are invalid.
1154	*
1155	* @param pVM The VM handle.
1156	* @param enmReg The register identifier.
1157	* @param enmType The register type. This is for sort out
1158	* aliases. Pass DBGFREGVALTYPE_INVALID to get
1159	* the standard name.
1160	*/
1161	VMMR3DECL(const char *) DBGFR3RegCpuName(PVM pVM, DBGFREG enmReg, DBGFREGVALTYPE enmType)
1162	{
1163	AssertReturn(enmReg >= DBGFREG_AL && enmReg < DBGFREG_END, NULL);
1164	AssertReturn(enmType >= DBGFREGVALTYPE_INVALID && enmType < DBGFREGVALTYPE_END, NULL);
1165	VM_ASSERT_VALID_EXT_RETURN(pVM, NULL);
1166
1167	PCDBGFREGSET pSet = pVM->aCpus[0].dbgf.s.pGuestRegSet;
1168	if (RT_UNLIKELY(!pSet))
1169	return NULL;
1170
1171	PCDBGFREGDESC pDesc = &pSet->paDescs[enmReg];
1172	PCDBGFREGALIAS pAlias = pDesc->paAliases;
1173	if ( pAlias
1174	&& pDesc->enmType != enmType
1175	&& enmType != DBGFREGVALTYPE_INVALID)
1176	{
1177	while (pAlias->pszName)
1178	{
1179	if (pAlias->enmType == enmType)
1180	return pAlias->pszName;
1181	pAlias++;
1182	}
1183	}
1184
1185	return pDesc->pszName;
1186	}
1187
1188
1189	/**
1190	* Fold the string to lower case and copy it into the destination buffer.
1191	*
1192	* @returns Number of folder characters, -1 on overflow.
1193	* @param pszSrc The source string.
1194	* @param cchSrc How much to fold and copy.
1195	* @param pszDst The output buffer.
1196	* @param cbDst The size of the output buffer.
1197	*/
1198	static ssize_t dbgfR3RegCopyToLower(const char pszSrc, size_t cchSrc, char pszDst, size_t cbDst)
1199	{
1200	ssize_t cchFolded = 0;
1201	char ch;
1202	while (cchSrc-- > 0 && (ch = *pszSrc++))
1203	{
1204	if (RT_UNLIKELY(cbDst <= 1))
1205	return -1;
1206	cbDst--;
1207
1208	char chLower = RT_C_TO_LOWER(ch);
1209	cchFolded += chLower != ch;
1210	*pszDst++ = chLower;
1211	}
1212	if (RT_UNLIKELY(!cbDst))
1213	return -1;
1214	*pszDst = '\0';
1215	return cchFolded;
1216	}
1217
1218
1219	/**
1220	* Resolves the register name.
1221	*
1222	* @returns Lookup record.
1223	* @param pVM The VM handle.
1224	* @param idDefCpu The default CPU ID set.
1225	* @param pszReg The register name.
1226	* @param fGuestRegs Default to guest CPU registers if set, the
1227	* hypervisor CPU registers if clear.
1228	*/
1229	static PCDBGFREGLOOKUP dbgfR3RegResolve(PVM pVM, VMCPUID idDefCpu, const char *pszReg, bool fGuestRegs)
1230	{
1231	DBGF_REG_DB_LOCK_READ(pVM);
1232
1233	/* Try looking up the name without any case folding or cpu prefixing. */
1234	PCDBGFREGLOOKUP pLookupRec = (PCDBGFREGLOOKUP)RTStrSpaceGet(&pVM->dbgf.s.RegSpace, pszReg);
1235	if (!pLookupRec)
1236	{
1237	char szName[DBGF_REG_MAX_NAME * 4 + 16];
1238
1239	/* Lower case it and try again. */
1240	ssize_t cchFolded = dbgfR3RegCopyToLower(pszReg, RTSTR_MAX, szName, sizeof(szName) - DBGF_REG_MAX_NAME);
1241	if (cchFolded > 0)
1242	pLookupRec = (PCDBGFREGLOOKUP)RTStrSpaceGet(&pVM->dbgf.s.RegSpace, szName);
1243	if ( !pLookupRec
1244	&& cchFolded >= 0
1245	&& idDefCpu != VMCPUID_ANY)
1246	{
1247	/* Prefix it with the specified CPU set. */
1248	size_t cchCpuSet = RTStrPrintf(szName, sizeof(szName), fGuestRegs ? "cpu%u." : "hypercpu%u.", idDefCpu);
1249	dbgfR3RegCopyToLower(pszReg, RTSTR_MAX, &szName[cchCpuSet], sizeof(szName) - cchCpuSet);
1250	pLookupRec = (PCDBGFREGLOOKUP)RTStrSpaceGet(&pVM->dbgf.s.RegSpace, szName);
1251	}
1252	}
1253
1254	DBGF_REG_DB_UNLOCK_READ(pVM);
1255	return pLookupRec;
1256	}
1257
1258
1259	/**
1260	* On CPU worker for the register queries, used by dbgfR3RegNmQueryWorker and
1261	* dbgfR3RegPrintfCbFormatNormal.
1262	*
1263	* @returns VBox status code.
1264	*
1265	* @param pVM The VM handle.
1266	* @param pLookupRec The register lookup record.
1267	* @param enmType The desired return type.
1268	* @param pValue Where to return the register value.
1269	* @param penmType Where to store the register value type.
1270	* Optional.
1271	*/
1272	static DECLCALLBACK(int) dbgfR3RegNmQueryWorkerOnCpu(PVM pVM, PCDBGFREGLOOKUP pLookupRec, DBGFREGVALTYPE enmType,
1273	PDBGFREGVAL pValue, PDBGFREGVALTYPE penmType)
1274	{
1275	PCDBGFREGDESC pDesc = pLookupRec->pDesc;
1276	PCDBGFREGSET pSet = pLookupRec->pSet;
1277	PCDBGFREGSUBFIELD pSubField = pLookupRec->pSubField;
1278	DBGFREGVALTYPE enmValueType = pDesc->enmType;
1279	int rc;
1280
1281	/*
1282	* Get the register or sub-field value.
1283	*/
1284	dbgfR3RegValClear(pValue);
1285	if (!pSubField)
1286	{
1287	rc = pDesc->pfnGet(pSet->uUserArg.pv, pDesc, pValue);
1288	if ( pLookupRec->pAlias
1289	&& pLookupRec->pAlias->enmType != enmValueType
1290	&& RT_SUCCESS(rc))
1291	{
1292	rc = dbgfR3RegValCast(pValue, enmValueType, pLookupRec->pAlias->enmType);
1293	enmValueType = pLookupRec->pAlias->enmType;
1294	}
1295	}
1296	else
1297	{
1298	if (pSubField->pfnGet)
1299	{
1300	rc = pSubField->pfnGet(pSet->uUserArg.pv, pSubField, &pValue->u128);
1301	enmValueType = DBGFREGVALTYPE_U128;
1302	}
1303	else
1304	{
1305	rc = pDesc->pfnGet(pSet->uUserArg.pv, pDesc, pValue);
1306	if ( pLookupRec->pAlias
1307	&& pLookupRec->pAlias->enmType != enmValueType
1308	&& RT_SUCCESS(rc))
1309	{
1310	rc = dbgfR3RegValCast(pValue, enmValueType, pLookupRec->pAlias->enmType);
1311	enmValueType = pLookupRec->pAlias->enmType;
1312	}
1313	if (RT_SUCCESS(rc))
1314	{
1315	rc = dbgfR3RegValCast(pValue, enmValueType, DBGFREGVALTYPE_U128);
1316	if (RT_SUCCESS(rc))
1317	{
1318	RTUInt128AssignShiftLeft(&pValue->u128, -pSubField->iFirstBit);
1319	RTUInt128AssignAndNFirstBits(&pValue->u128, pSubField->cBits);
1320	if (pSubField->cShift)
1321	RTUInt128AssignShiftLeft(&pValue->u128, pSubField->cShift);
1322	}
1323	}
1324	}
1325	if (RT_SUCCESS(rc))
1326	{
1327	unsigned const cBits = pSubField->cBits + pSubField->cShift;
1328	if (cBits <= 8)
1329	enmValueType = DBGFREGVALTYPE_U8;
1330	else if (cBits <= 16)
1331	enmValueType = DBGFREGVALTYPE_U16;
1332	else if (cBits <= 32)
1333	enmValueType = DBGFREGVALTYPE_U32;
1334	else if (cBits <= 64)
1335	enmValueType = DBGFREGVALTYPE_U64;
1336	else
1337	enmValueType = DBGFREGVALTYPE_U128;
1338	rc = dbgfR3RegValCast(pValue, DBGFREGVALTYPE_U128, enmValueType);
1339	}
1340	}
1341	if (RT_SUCCESS(rc))
1342	{
1343	/*
1344	* Do the cast if the desired return type doesn't match what
1345	* the getter returned.
1346	*/
1347	if ( enmValueType == enmType
1348	\|\| enmType == DBGFREGVALTYPE_END)
1349	{
1350	rc = VINF_SUCCESS;
1351	if (penmType)
1352	*penmType = enmValueType;
1353	}
1354	else
1355	{
1356	rc = dbgfR3RegValCast(pValue, enmValueType, enmType);
1357	if (penmType)
1358	*penmType = RT_SUCCESS(rc) ? enmType : enmValueType;
1359	}
1360	}
1361
1362	return rc;
1363	}
1364
1365
1366	/**
1367	* Worker for the register queries.
1368	*
1369	* @returns VBox status code.
1370	* @retval VINF_SUCCESS
1371	* @retval VERR_INVALID_VM_HANDLE
1372	* @retval VERR_INVALID_CPU_ID
1373	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1374	* @retval VERR_DBGF_UNSUPPORTED_CAST
1375	* @retval VINF_DBGF_TRUNCATED_REGISTER
1376	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
1377	*
1378	* @param pVM The VM handle.
1379	* @param idDefCpu The virtual CPU ID for the default CPU register
1380	* set. Can be OR'ed with DBGFREG_HYPER_VMCPUID.
1381	* @param pszReg The register to query.
1382	* @param enmType The desired return type.
1383	* @param pValue Where to return the register value.
1384	* @param penmType Where to store the register value type.
1385	* Optional.
1386	*/
1387	static int dbgfR3RegNmQueryWorker(PVM pVM, VMCPUID idDefCpu, const char *pszReg, DBGFREGVALTYPE enmType,
1388	PDBGFREGVAL pValue, PDBGFREGVALTYPE penmType)
1389	{
1390	/*
1391	* Validate input.
1392	*/
1393	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1394	AssertReturn((idDefCpu & ~DBGFREG_HYPER_VMCPUID) < pVM->cCpus \|\| idDefCpu == VMCPUID_ANY, VERR_INVALID_CPU_ID);
1395	AssertPtrReturn(pszReg, VERR_INVALID_POINTER);
1396
1397	Assert(enmType > DBGFREGVALTYPE_INVALID && enmType <= DBGFREGVALTYPE_END);
1398	AssertPtr(pValue);
1399
1400	/*
1401	* Resolve the register and call the getter on the relevant CPU.
1402	*/
1403	bool const fGuestRegs = !(idDefCpu & DBGFREG_HYPER_VMCPUID) && idDefCpu != VMCPUID_ANY;
1404	PCDBGFREGLOOKUP pLookupRec = dbgfR3RegResolve(pVM, idDefCpu, pszReg, fGuestRegs);
1405	if (pLookupRec)
1406	{
1407	if (pLookupRec->pSet->enmType == DBGFREGSETTYPE_CPU)
1408	idDefCpu = pLookupRec->pSet->uUserArg.pVCpu->idCpu;
1409	else if (idDefCpu != VMCPUID_ANY)
1410	idDefCpu &= ~DBGFREG_HYPER_VMCPUID;
1411	return VMR3ReqCallWait(pVM, idDefCpu, (PFNRT)dbgfR3RegNmQueryWorkerOnCpu, 5, pVM, pLookupRec, enmType, pValue, penmType);
1412	}
1413	return VERR_DBGF_REGISTER_NOT_FOUND;
1414	}
1415
1416
1417	/**
1418	* Queries a descriptor table register value.
1419	*
1420	* @retval VINF_SUCCESS
1421	* @retval VERR_INVALID_VM_HANDLE
1422	* @retval VERR_INVALID_CPU_ID
1423	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1424	*
1425	* @param pVM The VM handle.
1426	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1427	* applicable. Can be OR'ed with
1428	* DBGFREG_HYPER_VMCPUID.
1429	* @param pszReg The register that's being queried. Except for
1430	* CPU registers, this must be on the form
1431	* "set.reg[.sub]".
1432	* @param pValue Where to store the register value.
1433	* @param penmType Where to store the register value type.
1434	*/
1435	VMMR3DECL(int) DBGFR3RegNmQuery(PVM pVM, VMCPUID idDefCpu, const char *pszReg, PDBGFREGVAL pValue, PDBGFREGVALTYPE penmType)
1436	{
1437	return dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_END, pValue, penmType);
1438	}
1439
1440
1441	/**
1442	* Queries a 8-bit register value.
1443	*
1444	* @retval VINF_SUCCESS
1445	* @retval VERR_INVALID_VM_HANDLE
1446	* @retval VERR_INVALID_CPU_ID
1447	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1448	* @retval VERR_DBGF_UNSUPPORTED_CAST
1449	* @retval VINF_DBGF_TRUNCATED_REGISTER
1450	*
1451	* @param pVM The VM handle.
1452	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1453	* applicable. Can be OR'ed with
1454	* DBGFREG_HYPER_VMCPUID.
1455	* @param pszReg The register that's being queried. Except for
1456	* CPU registers, this must be on the form
1457	* "set.reg[.sub]".
1458	* @param pu8 Where to store the register value.
1459	*/
1460	VMMR3DECL(int) DBGFR3RegNmQueryU8(PVM pVM, VMCPUID idDefCpu, const char pszReg, uint8_t pu8)
1461	{
1462	DBGFREGVAL Value;
1463	int rc = dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_U8, &Value, NULL);
1464	if (RT_SUCCESS(rc))
1465	*pu8 = Value.u8;
1466	else
1467	*pu8 = 0;
1468	return rc;
1469	}
1470
1471
1472	/**
1473	* Queries a 16-bit register value.
1474	*
1475	* @retval VINF_SUCCESS
1476	* @retval VERR_INVALID_VM_HANDLE
1477	* @retval VERR_INVALID_CPU_ID
1478	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1479	* @retval VERR_DBGF_UNSUPPORTED_CAST
1480	* @retval VINF_DBGF_TRUNCATED_REGISTER
1481	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
1482	*
1483	* @param pVM The VM handle.
1484	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1485	* applicable. Can be OR'ed with
1486	* DBGFREG_HYPER_VMCPUID.
1487	* @param pszReg The register that's being queried. Except for
1488	* CPU registers, this must be on the form
1489	* "set.reg[.sub]".
1490	* @param pu16 Where to store the register value.
1491	*/
1492	VMMR3DECL(int) DBGFR3RegNmQueryU16(PVM pVM, VMCPUID idDefCpu, const char pszReg, uint16_t pu16)
1493	{
1494	DBGFREGVAL Value;
1495	int rc = dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_U16, &Value, NULL);
1496	if (RT_SUCCESS(rc))
1497	*pu16 = Value.u16;
1498	else
1499	*pu16 = 0;
1500	return rc;
1501	}
1502
1503
1504	/**
1505	* Queries a 32-bit register value.
1506	*
1507	* @retval VINF_SUCCESS
1508	* @retval VERR_INVALID_VM_HANDLE
1509	* @retval VERR_INVALID_CPU_ID
1510	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1511	* @retval VERR_DBGF_UNSUPPORTED_CAST
1512	* @retval VINF_DBGF_TRUNCATED_REGISTER
1513	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
1514	*
1515	* @param pVM The VM handle.
1516	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1517	* applicable. Can be OR'ed with
1518	* DBGFREG_HYPER_VMCPUID.
1519	* @param pszReg The register that's being queried. Except for
1520	* CPU registers, this must be on the form
1521	* "set.reg[.sub]".
1522	* @param pu32 Where to store the register value.
1523	*/
1524	VMMR3DECL(int) DBGFR3RegNmQueryU32(PVM pVM, VMCPUID idDefCpu, const char pszReg, uint32_t pu32)
1525	{
1526	DBGFREGVAL Value;
1527	int rc = dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_U32, &Value, NULL);
1528	if (RT_SUCCESS(rc))
1529	*pu32 = Value.u32;
1530	else
1531	*pu32 = 0;
1532	return rc;
1533	}
1534
1535
1536	/**
1537	* Queries a 64-bit register value.
1538	*
1539	* @retval VINF_SUCCESS
1540	* @retval VERR_INVALID_VM_HANDLE
1541	* @retval VERR_INVALID_CPU_ID
1542	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1543	* @retval VERR_DBGF_UNSUPPORTED_CAST
1544	* @retval VINF_DBGF_TRUNCATED_REGISTER
1545	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
1546	*
1547	* @param pVM The VM handle.
1548	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1549	* applicable. Can be OR'ed with
1550	* DBGFREG_HYPER_VMCPUID.
1551	* @param pszReg The register that's being queried. Except for
1552	* CPU registers, this must be on the form
1553	* "set.reg[.sub]".
1554	* @param pu64 Where to store the register value.
1555	*/
1556	VMMR3DECL(int) DBGFR3RegNmQueryU64(PVM pVM, VMCPUID idDefCpu, const char pszReg, uint64_t pu64)
1557	{
1558	DBGFREGVAL Value;
1559	int rc = dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_U64, &Value, NULL);
1560	if (RT_SUCCESS(rc))
1561	*pu64 = Value.u64;
1562	else
1563	*pu64 = 0;
1564	return rc;
1565	}
1566
1567
1568	/**
1569	* Queries a 128-bit register value.
1570	*
1571	* @retval VINF_SUCCESS
1572	* @retval VERR_INVALID_VM_HANDLE
1573	* @retval VERR_INVALID_CPU_ID
1574	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1575	* @retval VERR_DBGF_UNSUPPORTED_CAST
1576	* @retval VINF_DBGF_TRUNCATED_REGISTER
1577	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
1578	*
1579	* @param pVM The VM handle.
1580	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1581	* applicable. Can be OR'ed with
1582	* DBGFREG_HYPER_VMCPUID.
1583	* @param pszReg The register that's being queried. Except for
1584	* CPU registers, this must be on the form
1585	* "set.reg[.sub]".
1586	* @param pu128 Where to store the register value.
1587	*/
1588	VMMR3DECL(int) DBGFR3RegNmQueryU128(PVM pVM, VMCPUID idDefCpu, const char *pszReg, PRTUINT128U pu128)
1589	{
1590	DBGFREGVAL Value;
1591	int rc = dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_U128, &Value, NULL);
1592	if (RT_SUCCESS(rc))
1593	*pu128 = Value.u128;
1594	else
1595	pu128->s.Hi = pu128->s.Lo = 0;
1596	return rc;
1597	}
1598
1599
1600	#if 0
1601	/**
1602	* Queries a long double register value.
1603	*
1604	* @retval VINF_SUCCESS
1605	* @retval VERR_INVALID_VM_HANDLE
1606	* @retval VERR_INVALID_CPU_ID
1607	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1608	* @retval VERR_DBGF_UNSUPPORTED_CAST
1609	* @retval VINF_DBGF_TRUNCATED_REGISTER
1610	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
1611	*
1612	* @param pVM The VM handle.
1613	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1614	* applicable. Can be OR'ed with
1615	* DBGFREG_HYPER_VMCPUID.
1616	* @param pszReg The register that's being queried. Except for
1617	* CPU registers, this must be on the form
1618	* "set.reg[.sub]".
1619	* @param plrd Where to store the register value.
1620	*/
1621	VMMR3DECL(int) DBGFR3RegNmQueryLrd(PVM pVM, VMCPUID idDefCpu, const char pszReg, long double plrd)
1622	{
1623	DBGFREGVAL Value;
1624	int rc = dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_R80, &Value, NULL);
1625	if (RT_SUCCESS(rc))
1626	*plrd = Value.lrd;
1627	else
1628	*plrd = 0;
1629	return rc;
1630	}
1631	#endif
1632
1633
1634	/**
1635	* Queries a descriptor table register value.
1636	*
1637	* @retval VINF_SUCCESS
1638	* @retval VERR_INVALID_VM_HANDLE
1639	* @retval VERR_INVALID_CPU_ID
1640	* @retval VERR_DBGF_REGISTER_NOT_FOUND
1641	* @retval VERR_DBGF_UNSUPPORTED_CAST
1642	* @retval VINF_DBGF_TRUNCATED_REGISTER
1643	* @retval VINF_DBGF_ZERO_EXTENDED_REGISTER
1644	*
1645	* @param pVM The VM handle.
1646	* @param idDefCpu The default target CPU ID, VMCPUID_ANY if not
1647	* applicable. Can be OR'ed with
1648	* DBGFREG_HYPER_VMCPUID.
1649	* @param pszReg The register that's being queried. Except for
1650	* CPU registers, this must be on the form
1651	* "set.reg[.sub]".
1652	* @param pu64Base Where to store the register base value.
1653	* @param pu32Limit Where to store the register limit value.
1654	*/
1655	VMMR3DECL(int) DBGFR3RegNmQueryXdtr(PVM pVM, VMCPUID idDefCpu, const char pszReg, uint64_t pu64Base, uint32_t *pu32Limit)
1656	{
1657	DBGFREGVAL Value;
1658	int rc = dbgfR3RegNmQueryWorker(pVM, idDefCpu, pszReg, DBGFREGVALTYPE_DTR, &Value, NULL);
1659	if (RT_SUCCESS(rc))
1660	{
1661	*pu64Base = Value.dtr.u64Base;
1662	*pu32Limit = Value.dtr.u32Limit;
1663	}
1664	else
1665	{
1666	*pu64Base = 0;
1667	*pu32Limit = 0;
1668	}
1669	return rc;
1670	}
1671
1672
1673	/// @todo VMMR3DECL(int) DBGFR3RegNmQueryBatch(PVM pVM,VMCPUID idDefCpu, DBGFREGENTRYNM paRegs, size_t cRegs);
1674
1675
1676	/**
1677	* Gets the number of registers returned by DBGFR3RegNmQueryAll.
1678	*
1679	* @returns VBox status code.
1680	* @param pVM The VM handle.
1681	* @param pcRegs Where to return the register count.
1682	*/
1683	VMMR3DECL(int) DBGFR3RegNmQueryAllCount(PVM pVM, size_t *pcRegs)
1684	{
1685	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1686	*pcRegs = pVM->dbgf.s.cRegs;
1687	return VINF_SUCCESS;
1688	}
1689
1690
1691	/**
1692	* Pad register entries.
1693	*
1694	* @param paRegs The output array.
1695	* @param cRegs The size of the output array.
1696	* @param iReg The first register to pad.
1697	* @param cRegsToPad The number of registers to pad.
1698	*/
1699	static void dbgfR3RegNmQueryAllPadEntries(PDBGFREGENTRYNM paRegs, size_t cRegs, size_t iReg, size_t cRegsToPad)
1700	{
1701	if (iReg < cRegs)
1702	{
1703	size_t iEndReg = iReg + cRegsToPad;
1704	if (iEndReg > cRegs)
1705	iEndReg = cRegs;
1706	while (iReg < iEndReg)
1707	{
1708	paRegs[iReg].pszName = NULL;
1709	paRegs[iReg].enmType = DBGFREGVALTYPE_END;
1710	dbgfR3RegValClear(&paRegs[iReg].Val);
1711	iReg++;
1712	}
1713	}
1714	}
1715
1716
1717	/**
1718	* Query all registers in a set.
1719	*
1720	* @param pSet The set.
1721	* @param cRegsToQuery The number of registers to query.
1722	* @param paRegs The output array.
1723	* @param cRegs The size of the output array.
1724	*/
1725	static void dbgfR3RegNmQueryAllInSet(PCDBGFREGSET pSet, size_t cRegsToQuery, PDBGFREGENTRYNM paRegs, size_t cRegs)
1726	{
1727	int rc = VINF_SUCCESS;
1728
1729	if (cRegsToQuery > pSet->cDescs)
1730	cRegsToQuery = pSet->cDescs;
1731	if (cRegsToQuery > cRegs)
1732	cRegsToQuery = cRegs;
1733
1734	for (size_t iReg = 0; iReg < cRegsToQuery; iReg++)
1735	{
1736	paRegs[iReg].enmType = pSet->paDescs[iReg].enmType;
1737	paRegs[iReg].pszName = pSet->paLookupRecs[iReg].Core.pszString;
1738	dbgfR3RegValClear(&paRegs[iReg].Val);
1739	int rc2 = pSet->paDescs[iReg].pfnGet(pSet->uUserArg.pv, &pSet->paDescs[iReg], &paRegs[iReg].Val);
1740	AssertRCSuccess(rc2);
1741	if (RT_FAILURE(rc2))
1742	dbgfR3RegValClear(&paRegs[iReg].Val);
1743	}
1744	}
1745
1746
1747	/**
1748	* @callback_method_impl{FNRTSTRSPACECALLBACK, Worker used by
1749	* dbgfR3RegNmQueryAllWorker}
1750	*/
1751	static DECLCALLBACK(int) dbgfR3RegNmQueryAllEnum(PRTSTRSPACECORE pStr, void *pvUser)
1752	{
1753	PCDBGFREGSET pSet = (PCDBGFREGSET)pStr;
1754	if (pSet->enmType != DBGFREGSETTYPE_CPU)
1755	{
1756	PDBGFR3REGNMQUERYALLARGS pArgs = (PDBGFR3REGNMQUERYALLARGS)pvUser;
1757	if (pArgs->iReg < pArgs->cRegs)
1758	dbgfR3RegNmQueryAllInSet(pSet, pSet->cDescs, &pArgs->paRegs[pArgs->iReg], pArgs->cRegs - pArgs->iReg);
1759	pArgs->iReg += pSet->cDescs;
1760	}
1761
1762	return 0;
1763	}
1764
1765
1766	/**
1767	* @callback_method_impl{FNVMMEMTRENDEZVOUS, Worker used by DBGFR3RegNmQueryAll}
1768	*/
1769	static DECLCALLBACK(VBOXSTRICTRC) dbgfR3RegNmQueryAllWorker(PVM pVM, PVMCPU pVCpu, void *pvUser)
1770	{
1771	PDBGFR3REGNMQUERYALLARGS pArgs = (PDBGFR3REGNMQUERYALLARGS)pvUser;
1772	PDBGFREGENTRYNM paRegs = pArgs->paRegs;
1773	size_t const cRegs = pArgs->cRegs;
1774
1775	DBGF_REG_DB_LOCK_READ(pVM);
1776
1777	/*
1778	* My guest CPU registers.
1779	*/
1780	size_t iCpuReg = pVCpu->idCpu * DBGFREG_ALL_COUNT;
1781	if (pVCpu->dbgf.s.pGuestRegSet)
1782	{
1783	if (iCpuReg < cRegs)
1784	dbgfR3RegNmQueryAllInSet(pVCpu->dbgf.s.pGuestRegSet, DBGFREG_ALL_COUNT, &paRegs[iCpuReg], cRegs - iCpuReg);
1785	}
1786	else
1787	dbgfR3RegNmQueryAllPadEntries(paRegs, cRegs, iCpuReg, DBGFREG_ALL_COUNT);
1788
1789	/*
1790	* My hypervisor CPU registers.
1791	*/
1792	iCpuReg = pVM->cCpus * DBGFREG_ALL_COUNT + pVCpu->idCpu * DBGFREG_ALL_COUNT;
1793	if (pVCpu->dbgf.s.pHyperRegSet)
1794	{
1795	if (iCpuReg < cRegs)
1796	dbgfR3RegNmQueryAllInSet(pVCpu->dbgf.s.pHyperRegSet, DBGFREG_ALL_COUNT, &paRegs[iCpuReg], cRegs - iCpuReg);
1797	}
1798	else
1799	dbgfR3RegNmQueryAllPadEntries(paRegs, cRegs, iCpuReg, DBGFREG_ALL_COUNT);
1800
1801	/*
1802	* The primary CPU does all the other registers.
1803	*/
1804	if (pVCpu->idCpu == 0)
1805	{
1806	pArgs->iReg = pVM->cCpus * DBGFREG_ALL_COUNT * 2;
1807	RTStrSpaceEnumerate(&pVM->dbgf.s.RegSetSpace, dbgfR3RegNmQueryAllEnum, pArgs);
1808	dbgfR3RegNmQueryAllPadEntries(paRegs, cRegs, pArgs->iReg, cRegs);
1809	}
1810
1811	DBGF_REG_DB_UNLOCK_READ(pVM);
1812	return VINF_SUCCESS; /* Ignore errors. */
1813	}
1814
1815
1816	/**
1817	* Queries all register.
1818	*
1819	* @returns VBox status code.
1820	* @param pVM The VM handle.
1821	* @param paRegs The output register value array. The register
1822	* name string is read only and shall not be freed
1823	* or modified.
1824	* @param cRegs The number of entries in @a paRegs. The
1825	* correct size can be obtained by calling
1826	* DBGFR3RegNmQueryAllCount.
1827	*/
1828	VMMR3DECL(int) DBGFR3RegNmQueryAll(PVM pVM, PDBGFREGENTRYNM paRegs, size_t cRegs)
1829	{
1830	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1831	AssertPtrReturn(paRegs, VERR_INVALID_POINTER);
1832	AssertReturn(cRegs > 0, VERR_OUT_OF_RANGE);
1833
1834	DBGFR3REGNMQUERYALLARGS Args;
1835	Args.paRegs = paRegs;
1836	Args.cRegs = cRegs;
1837
1838	return VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE, dbgfR3RegNmQueryAllWorker, &Args);
1839	}
1840
1841
1842	VMMR3DECL(int) DBGFR3RegNmSet(PVM pVM, VMCPUID idDefCpu, const char *pszReg, PCDBGFREGVAL pValue, DBGFREGVALTYPE enmType)
1843	{
1844	return VERR_NOT_IMPLEMENTED;
1845	}
1846
1847
1848	/**
1849	* Internal worker for DBGFR3RegFormatValue, cbTmp is sufficent.
1850	*
1851	* @copydoc DBGFR3RegFormatValue
1852	*/
1853	DECLINLINE(ssize_t) dbgfR3RegFormatValueInt(char *pszTmp, size_t cbTmp, PCDBGFREGVAL pValue, DBGFREGVALTYPE enmType,
1854	unsigned uBase, signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
1855	{
1856	switch (enmType)
1857	{
1858	case DBGFREGVALTYPE_U8:
1859	return RTStrFormatU8(pszTmp, cbTmp, pValue->u8, uBase, cchWidth, cchPrecision, fFlags);
1860	case DBGFREGVALTYPE_U16:
1861	return RTStrFormatU16(pszTmp, cbTmp, pValue->u16, uBase, cchWidth, cchPrecision, fFlags);
1862	case DBGFREGVALTYPE_U32:
1863	return RTStrFormatU32(pszTmp, cbTmp, pValue->u32, uBase, cchWidth, cchPrecision, fFlags);
1864	case DBGFREGVALTYPE_U64:
1865	return RTStrFormatU64(pszTmp, cbTmp, pValue->u64, uBase, cchWidth, cchPrecision, fFlags);
1866	case DBGFREGVALTYPE_U128:
1867	return RTStrFormatU128(pszTmp, cbTmp, &pValue->u128, uBase, cchWidth, cchPrecision, fFlags);
1868	case DBGFREGVALTYPE_R80:
1869	return RTStrFormatR80u2(pszTmp, cbTmp, &pValue->r80, cchWidth, cchPrecision, fFlags);
1870	case DBGFREGVALTYPE_DTR:
1871	{
1872	ssize_t cch = RTStrFormatU64(pszTmp, cbTmp, pValue->dtr.u64Base,
1873	16, 2+16, 0, RTSTR_F_SPECIAL \| RTSTR_F_ZEROPAD);
1874	AssertReturn(cch > 0, VERR_INTERNAL_ERROR_4);
1875	pszTmp[cch++] = ':';
1876	cch += RTStrFormatU64(&pszTmp[cch], cbTmp - cch, pValue->dtr.u32Limit,
1877	16, 4, 0, RTSTR_F_ZEROPAD \| RTSTR_F_32BIT);
1878	return cch;
1879	}
1880
1881	case DBGFREGVALTYPE_32BIT_HACK:
1882	case DBGFREGVALTYPE_END:
1883	case DBGFREGVALTYPE_INVALID:
1884	break;
1885	/* no default, want gcc warnings */
1886	}
1887
1888	RTStrPrintf(pszTmp, cbTmp, "!enmType=%d!", enmType);
1889	return VERR_INTERNAL_ERROR_5;
1890	}
1891
1892
1893
1894	/**
1895	* Format a register value, extended version.
1896	*
1897	* @returns The number of bytes returned, VERR_BUFFER_OVERFLOW on failure.
1898	* @param pszBuf The output buffer.
1899	* @param cbBuf The size of the output buffer.
1900	* @param pValue The value to format.
1901	* @param enmType The value type.
1902	* @param uBase The base (ignored if not applicable).
1903	* @param cchWidth The width if RTSTR_F_WIDTH is set, otherwise
1904	* ignored.
1905	* @param cchPrecision The width if RTSTR_F_PRECISION is set, otherwise
1906	* ignored.
1907	* @param fFlags String formatting flags, RTSTR_F_XXX.
1908	*/
1909	VMMDECL(ssize_t) DBGFR3RegFormatValueEx(char *pszBuf, size_t cbBuf, PCDBGFREGVAL pValue, DBGFREGVALTYPE enmType,
1910	unsigned uBase, signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
1911	{
1912	/*
1913	* Format to temporary buffer using worker shared with dbgfR3RegPrintfCbFormatNormal.
1914	*/
1915	char szTmp[160];
1916	ssize_t cchOutput = dbgfR3RegFormatValueInt(szTmp, sizeof(szTmp), pValue, enmType, uBase, cchWidth, cchPrecision, fFlags);
1917	if (cchOutput > 0)
1918	{
1919	if ((size_t)cchOutput < cbBuf)
1920	memcpy(pszBuf, szTmp, cchOutput + 1);
1921	else
1922	{
1923	if (cbBuf)
1924	{
1925	memcpy(pszBuf, szTmp, cbBuf - 1);
1926	pszBuf[cbBuf - 1] = '\0';
1927	}
1928	cchOutput = VERR_BUFFER_OVERFLOW;
1929	}
1930	}
1931	return cchOutput;
1932	}
1933
1934
1935	/**
1936	* Format a register value as hexadecimal and with default width according to
1937	* the type.
1938	*
1939	* @returns The number of bytes returned, VERR_BUFFER_OVERFLOW on failure.
1940	* @param pszBuf The output buffer.
1941	* @param cbBuf The size of the output buffer.
1942	* @param pValue The value to format.
1943	* @param enmType The value type.
1944	* @param fSpecial Same as RTSTR_F_SPECIAL.
1945	*/
1946	VMMDECL(ssize_t) DBGFR3RegFormatValue(char *pszBuf, size_t cbBuf, PCDBGFREGVAL pValue, DBGFREGVALTYPE enmType, bool fSpecial)
1947	{
1948	int cchWidth = 0;
1949	switch (enmType)
1950	{
1951	case DBGFREGVALTYPE_U8: cchWidth = 2 + fSpecial*2; break;
1952	case DBGFREGVALTYPE_U16: cchWidth = 4 + fSpecial*2; break;
1953	case DBGFREGVALTYPE_U32: cchWidth = 8 + fSpecial*2; break;
1954	case DBGFREGVALTYPE_U64: cchWidth = 16 + fSpecial*2; break;
1955	case DBGFREGVALTYPE_U128: cchWidth = 32 + fSpecial*2; break;
1956	case DBGFREGVALTYPE_R80: cchWidth = 0; break;
1957	case DBGFREGVALTYPE_DTR: cchWidth = 16+1+4 + fSpecial*2; break;
1958
1959	case DBGFREGVALTYPE_32BIT_HACK:
1960	case DBGFREGVALTYPE_END:
1961	case DBGFREGVALTYPE_INVALID:
1962	break;
1963	/* no default, want gcc warnings */
1964	}
1965	uint32_t fFlags = RTSTR_F_ZEROPAD;
1966	if (fSpecial)
1967	fFlags \|= RTSTR_F_SPECIAL;
1968	if (cchWidth != 0)
1969	fFlags \|= RTSTR_F_WIDTH;
1970	return DBGFR3RegFormatValueEx(pszBuf, cbBuf, pValue, enmType, 16, cchWidth, 0, fFlags);
1971	}
1972
1973
1974	/**
1975	* Format a register using special hacks as well as sub-field specifications
1976	* (the latter isn't implemented yet).
1977	*/
1978	static size_t
1979	dbgfR3RegPrintfCbFormatField(PDBGFR3REGPRINTFARGS pThis, PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
1980	PCDBGFREGLOOKUP pLookupRec, int cchWidth, int cchPrecision, unsigned fFlags)
1981	{
1982	char szTmp[160];
1983
1984	/*
1985	* Retrieve the register value.
1986	*/
1987	DBGFREGVAL Value;
1988	DBGFREGVALTYPE enmType;
1989	int rc = dbgfR3RegNmQueryWorkerOnCpu(pThis->pVM, pLookupRec, DBGFREGVALTYPE_END, &Value, &enmType);
1990	if (RT_FAILURE(rc))
1991	{
1992	PCRTSTATUSMSG pErr = RTErrGet(rc);
1993	if (pErr)
1994	return pfnOutput(pvArgOutput, pErr->pszDefine, strlen(pErr->pszDefine));
1995	return pfnOutput(pvArgOutput, szTmp, RTStrPrintf(szTmp, sizeof(szTmp), "rc=%d", rc));
1996	}
1997
1998	char *psz = szTmp;
1999
2000	/*
2001	* Special case: Format eflags.
2002	*/
2003	if ( pLookupRec->pSet->enmType == DBGFREGSETTYPE_CPU
2004	&& pLookupRec->pDesc->enmReg == DBGFREG_RFLAGS
2005	&& pLookupRec->pSubField == NULL)
2006	{
2007	rc = dbgfR3RegValCast(&Value, enmType, DBGFREGVALTYPE_U32);
2008	AssertRC(rc);
2009	uint32_t const efl = Value.u32;
2010
2011	/* the iopl */
2012	psz += RTStrPrintf(psz, sizeof(szTmp) / 2, "iopl=%u ", X86_EFL_GET_IOPL(efl));
2013
2014	/* add flags */
2015	static const struct
2016	{
2017	const char *pszSet;
2018	const char *pszClear;
2019	uint32_t fFlag;
2020	} aFlags[] =
2021	{
2022	{ "vip",NULL, X86_EFL_VIP },
2023	{ "vif",NULL, X86_EFL_VIF },
2024	{ "ac", NULL, X86_EFL_AC },
2025	{ "vm", NULL, X86_EFL_VM },
2026	{ "rf", NULL, X86_EFL_RF },
2027	{ "nt", NULL, X86_EFL_NT },
2028	{ "ov", "nv", X86_EFL_OF },
2029	{ "dn", "up", X86_EFL_DF },
2030	{ "ei", "di", X86_EFL_IF },
2031	{ "tf", NULL, X86_EFL_TF },
2032	{ "ng", "pl", X86_EFL_SF },
2033	{ "zr", "nz", X86_EFL_ZF },
2034	{ "ac", "na", X86_EFL_AF },
2035	{ "po", "pe", X86_EFL_PF },
2036	{ "cy", "nc", X86_EFL_CF },
2037	};
2038	for (unsigned i = 0; i < RT_ELEMENTS(aFlags); i++)
2039	{
2040	const char *pszAdd = aFlags[i].fFlag & efl ? aFlags[i].pszSet : aFlags[i].pszClear;
2041	if (pszAdd)
2042	{
2043	psz++ = pszAdd++;
2044	psz++ = pszAdd++;
2045	if (*pszAdd)
2046	psz++ = pszAdd++;
2047	*psz++ = ' ';
2048	}
2049	}
2050
2051	/* drop trailing space */
2052	psz--;
2053	}
2054	else
2055	{
2056	/*
2057	* General case.
2058	*/
2059	AssertMsgFailed(("Not implemented: %s\n", pLookupRec->Core.pszString));
2060	return pfnOutput(pvArgOutput, pLookupRec->Core.pszString, pLookupRec->Core.cchString);
2061	}
2062
2063	/* Output the string. */
2064	return pfnOutput(pvArgOutput, szTmp, psz - &szTmp[0]);
2065	}
2066
2067
2068	/**
2069	* Formats a register having parsed up to the register name.
2070	*/
2071	static size_t
2072	dbgfR3RegPrintfCbFormatNormal(PDBGFR3REGPRINTFARGS pThis, PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
2073	PCDBGFREGLOOKUP pLookupRec, unsigned uBase, int cchWidth, int cchPrecision, unsigned fFlags)
2074	{
2075	char szTmp[160];
2076
2077	/*
2078	* Get the register value.
2079	*/
2080	DBGFREGVAL Value;
2081	DBGFREGVALTYPE enmType;
2082	int rc = dbgfR3RegNmQueryWorkerOnCpu(pThis->pVM, pLookupRec, DBGFREGVALTYPE_END, &Value, &enmType);
2083	if (RT_FAILURE(rc))
2084	{
2085	PCRTSTATUSMSG pErr = RTErrGet(rc);
2086	if (pErr)
2087	return pfnOutput(pvArgOutput, pErr->pszDefine, strlen(pErr->pszDefine));
2088	return pfnOutput(pvArgOutput, szTmp, RTStrPrintf(szTmp, sizeof(szTmp), "rc=%d", rc));
2089	}
2090
2091	/*
2092	* Format the value.
2093	*/
2094	ssize_t cchOutput = dbgfR3RegFormatValueInt(szTmp, sizeof(szTmp), &Value, enmType, uBase, cchWidth, cchPrecision, fFlags);
2095	if (RT_UNLIKELY(cchOutput <= 0))
2096	{
2097	AssertFailed();
2098	return pfnOutput(pvArgOutput, "internal-error", sizeof("internal-error") - 1);
2099	}
2100	return pfnOutput(pvArgOutput, szTmp, cchOutput);
2101	}
2102
2103
2104	/**
2105	* @callback_method_impl{FNSTRFORMAT}
2106	*/
2107	static DECLCALLBACK(size_t)
2108	dbgfR3RegPrintfCbFormat(void pvArg, PFNRTSTROUTPUT pfnOutput, void pvArgOutput,
2109	const char *ppszFormat, va_list pArgs, int cchWidth,
2110	int cchPrecision, unsigned fFlags, char chArgSize)
2111	{
2112	/*
2113	* Parse the format type and hand the job to the appropriate worker.
2114	*/
2115	PDBGFR3REGPRINTFARGS pThis = (PDBGFR3REGPRINTFARGS)pvArg;
2116	const char pszFormat = ppszFormat;
2117	if ( pszFormat[0] != 'V'
2118	\|\| pszFormat[1] != 'R')
2119	{
2120	AssertMsgFailed(("'%s'\n", pszFormat));
2121	return 0;
2122	}
2123	unsigned offCurly = 2;
2124	if (pszFormat[offCurly] != '{')
2125	{
2126	AssertMsgReturn(pszFormat[offCurly], ("'%s'\n", pszFormat), 0);
2127	offCurly++;
2128	AssertMsgReturn(pszFormat[offCurly] == '{', ("'%s'\n", pszFormat), 0);
2129	}
2130	const char *pachReg = &pszFormat[offCurly + 1];
2131
2132	/*
2133	* The end and length of the register.
2134	*/
2135	const char *pszEnd = strchr(pachReg, '}');
2136	AssertMsgReturn(pszEnd, ("Missing closing curly bracket: '%s'\n", pszFormat), 0);
2137	size_t const cchReg = pszEnd - pachReg;
2138
2139	/*
2140	* Look up the register - same as dbgfR3RegResolve, except for locking and
2141	* input string termination.
2142	*/
2143	/* Try looking up the name without any case folding or cpu prefixing. */
2144	PCDBGFREGLOOKUP pLookupRec = (PCDBGFREGLOOKUP)RTStrSpaceGetN(&pThis->pVM->dbgf.s.RegSpace, pachReg, cchReg);
2145	if (!pLookupRec)
2146	{
2147	/* Lower case it and try again. */
2148	char szName[DBGF_REG_MAX_NAME * 4 + 16];
2149	ssize_t cchFolded = dbgfR3RegCopyToLower(pachReg, cchReg, szName, sizeof(szName) - DBGF_REG_MAX_NAME);
2150	if (cchFolded > 0)
2151	pLookupRec = (PCDBGFREGLOOKUP)RTStrSpaceGet(&pThis->pVM->dbgf.s.RegSpace, szName);
2152	if ( !pLookupRec
2153	&& cchFolded >= 0
2154	&& pThis->idCpu != VMCPUID_ANY)
2155	{
2156	/* Prefix it with the specified CPU set. */
2157	size_t cchCpuSet = RTStrPrintf(szName, sizeof(szName), pThis->fGuestRegs ? "cpu%u." : "hypercpu%u.", pThis->idCpu);
2158	dbgfR3RegCopyToLower(pachReg, cchReg, &szName[cchCpuSet], sizeof(szName) - cchCpuSet);
2159	pLookupRec = (PCDBGFREGLOOKUP)RTStrSpaceGet(&pThis->pVM->dbgf.s.RegSpace, szName);
2160	}
2161	}
2162	AssertMsgReturn(pLookupRec, ("'%s'\n", pszFormat), 0);
2163	AssertMsgReturn( pLookupRec->pSet->enmType != DBGFREGSETTYPE_CPU
2164	\|\| pLookupRec->pSet->uUserArg.pVCpu->idCpu == pThis->idCpu,
2165	("'%s' idCpu=%u, pSet/cpu=%u\n", pszFormat, pThis->idCpu, pLookupRec->pSet->uUserArg.pVCpu->idCpu),
2166	0);
2167
2168	/*
2169	* Commit the parsed format string. Up to this point it is nice to know
2170	* what register lookup failed and such, so we've delayed comitting.
2171	*/
2172	*ppszFormat = pszEnd + 1;
2173
2174	/*
2175	* Call the responsible worker.
2176	*/
2177	switch (pszFormat[offCurly - 1])
2178	{
2179	case 'R': /* %VR{} */
2180	case 'X': /* %VRX{} */
2181	return dbgfR3RegPrintfCbFormatNormal(pThis, pfnOutput, pvArgOutput, pLookupRec,
2182	16, cchWidth, cchPrecision, fFlags);
2183	case 'U':
2184	return dbgfR3RegPrintfCbFormatNormal(pThis, pfnOutput, pvArgOutput, pLookupRec,
2185	10, cchWidth, cchPrecision, fFlags);
2186	case 'O':
2187	return dbgfR3RegPrintfCbFormatNormal(pThis, pfnOutput, pvArgOutput, pLookupRec,
2188	8, cchWidth, cchPrecision, fFlags);
2189	case 'B':
2190	return dbgfR3RegPrintfCbFormatNormal(pThis, pfnOutput, pvArgOutput, pLookupRec,
2191	2, cchWidth, cchPrecision, fFlags);
2192	case 'F':
2193	return dbgfR3RegPrintfCbFormatField(pThis, pfnOutput, pvArgOutput, pLookupRec, cchWidth, cchPrecision, fFlags);
2194	default:
2195	AssertFailed();
2196	return 0;
2197	}
2198	}
2199
2200
2201
2202	/**
2203	* @callback_method_impl{FNRTSTROUTPUT}
2204	*/
2205	static DECLCALLBACK(size_t)
2206	dbgfR3RegPrintfCbOutput(void pvArg, const char pachChars, size_t cbChars)
2207	{
2208	PDBGFR3REGPRINTFARGS pArgs = (PDBGFR3REGPRINTFARGS)pvArg;
2209	size_t cbToCopy = cbChars;
2210	if (cbToCopy >= pArgs->cchLeftBuf)
2211	{
2212	if (RT_SUCCESS(pArgs->rc))
2213	pArgs->rc = VERR_BUFFER_OVERFLOW;
2214	cbToCopy = pArgs->cchLeftBuf;
2215	}
2216	if (cbToCopy > 0)
2217	{
2218	memcpy(&pArgs->pszBuf[pArgs->offBuf], pachChars, cbToCopy);
2219	pArgs->offBuf += cbToCopy;
2220	pArgs->cchLeftBuf -= cbToCopy;
2221	pArgs->pszBuf[pArgs->offBuf] = '\0';
2222	}
2223	return cbToCopy;
2224	}
2225
2226
2227	/**
2228	* On CPU worker for the register formatting, used by DBGFR3RegPrintfV.
2229	*
2230	* @returns VBox status code.
2231	*
2232	* @param pArgs The argument package and state.
2233	*/
2234	static DECLCALLBACK(int) dbgfR3RegPrintfWorkerOnCpu(PDBGFR3REGPRINTFARGS pArgs)
2235	{
2236	DBGF_REG_DB_LOCK_READ(pArgs->pVM);
2237	RTStrFormatV(dbgfR3RegPrintfCbOutput, pArgs, dbgfR3RegPrintfCbFormat, pArgs, pArgs->pszFormat, pArgs->va);
2238	DBGF_REG_DB_UNLOCK_READ(pArgs->pVM);
2239	return pArgs->rc;
2240	}
2241
2242
2243	/**
2244	* Format a registers.
2245	*
2246	* This is restricted to registers from one CPU, that specified by @a idCpu.
2247	*
2248	* @returns VBox status code.
2249	* @param pVM The VM handle.
2250	* @param idCpu The CPU ID of any CPU registers that may be
2251	* printed, pass VMCPUID_ANY if not applicable.
2252	* @param pszBuf The output buffer.
2253	* @param cbBuf The size of the output buffer.
2254	* @param pszFormat The format string. Register names are given by
2255	* %VR{name}, they take no arguments.
2256	* @param va Other format arguments.
2257	*/
2258	VMMR3DECL(int) DBGFR3RegPrintfV(PVM pVM, VMCPUID idCpu, char pszBuf, size_t cbBuf, const char pszFormat, va_list va)
2259	{
2260	AssertPtrReturn(pszBuf, VERR_INVALID_POINTER);
2261	AssertReturn(cbBuf > 0, VERR_BUFFER_OVERFLOW);
2262	*pszBuf = '\0';
2263
2264	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2265	AssertReturn((idCpu & ~DBGFREG_HYPER_VMCPUID) < pVM->cCpus \|\| idCpu == VMCPUID_ANY, VERR_INVALID_CPU_ID);
2266	AssertPtrReturn(pszFormat, VERR_INVALID_POINTER);
2267
2268	/*
2269	* Set up an argument package and execute the formatting on the
2270	* specified CPU.
2271	*/
2272	DBGFR3REGPRINTFARGS Args;
2273	Args.pVM = pVM;
2274	Args.idCpu = idCpu != VMCPUID_ANY ? idCpu & ~DBGFREG_HYPER_VMCPUID : idCpu;
2275	Args.fGuestRegs = idCpu != VMCPUID_ANY && !(idCpu & DBGFREG_HYPER_VMCPUID);
2276	Args.pszBuf = pszBuf;
2277	Args.pszFormat = pszFormat;
2278	va_copy(Args.va, va);
2279	Args.offBuf = 0;
2280	Args.cchLeftBuf = cbBuf - 1;
2281	Args.rc = VINF_SUCCESS;
2282	int rc = VMR3ReqCallWait(pVM, Args.idCpu, (PFNRT)dbgfR3RegPrintfWorkerOnCpu, 1, &Args);
2283	va_end(Args.va);
2284	return rc;
2285	}
2286
2287
2288	/**
2289	* Format a registers.
2290	*
2291	* This is restricted to registers from one CPU, that specified by @a idCpu.
2292	*
2293	* @returns VBox status code.
2294	* @param pVM The VM handle.
2295	* @param idCpu The CPU ID of any CPU registers that may be
2296	* printed, pass VMCPUID_ANY if not applicable.
2297	* @param pszBuf The output buffer.
2298	* @param cbBuf The size of the output buffer.
2299	* @param pszFormat The format string. Register names are given by
2300	* %VR{name}, %VRU{name}, %VRO{name} and
2301	* %VRB{name}, which are hexadecimal, (unsigned)
2302	* decimal, octal and binary representation. None
2303	* of these types takes any arguments.
2304	* @param ... Other format arguments.
2305	*/
2306	VMMR3DECL(int) DBGFR3RegPrintf(PVM pVM, VMCPUID idCpu, char pszBuf, size_t cbBuf, const char pszFormat, ...)
2307	{
2308	va_list va;
2309	va_start(va, pszFormat);
2310	int rc = DBGFR3RegPrintfV(pVM, idCpu, pszBuf, cbBuf, pszFormat, va);
2311	va_end(va);
2312	return rc;
2313	}
2314

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source: vbox/trunk/src/VBox/VMM/VMMR3/DBGFReg.cpp@ 37423

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