VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMInternal.h@ 20588

Last change on this file since 20588 was 20545, checked in by vboxsync, 16 years ago

VMM: Instrumented the setjump code with stack usage statistics (only 32-bit and stack switching version atm).

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1/* $Id: VMMInternal.h 20545 2009-06-13 23:56:48Z vboxsync $ */
2/** @file
3 * VMM - Internal header file.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18 * Clara, CA 95054 USA or visit http://www.sun.com if you need
19 * additional information or have any questions.
20 */
21
22#ifndef ___VMMInternal_h
23#define ___VMMInternal_h
24
25#include <VBox/cdefs.h>
26#include <VBox/stam.h>
27#include <VBox/log.h>
28#include <iprt/critsect.h>
29
30
31#if !defined(IN_VMM_R3) && !defined(IN_VMM_R0) && !defined(IN_VMM_RC)
32# error "Not in VMM! This is an internal header!"
33#endif
34
35
36/** @defgroup grp_vmm_int Internals
37 * @ingroup grp_vmm
38 * @internal
39 * @{
40 */
41
42/** @def VBOX_WITH_RC_RELEASE_LOGGING
43 * Enables RC release logging. */
44#define VBOX_WITH_RC_RELEASE_LOGGING
45
46/** @def VBOX_WITH_R0_LOGGING
47 * Enables Ring-0 logging (non-release).
48 *
49 * Ring-0 logging isn't 100% safe yet (thread id reuse / process exit cleanup),
50 * so you have to sign up here by adding your defined(DEBUG_<userid>) to the
51 * #if, or by adding VBOX_WITH_R0_LOGGING to your LocalConfig.kmk.
52 *
53 * You might also wish to enable the AssertMsg1/2 overrides in VMMR0.cpp when
54 * enabling this.
55 */
56#if defined(DEBUG_sandervl) || defined(DEBUG_frank) || defined(DOXYGEN_RUNNING)
57# define VBOX_WITH_R0_LOGGING
58#endif
59
60/** @def VBOX_STRICT_VMM_STACK
61 * Enables VMM stack guard pages to catch stack over- and underruns. */
62#if defined(VBOX_STRICT) || defined(DOXYGEN_RUNNING)
63# define VBOX_STRICT_VMM_STACK
64#endif
65
66
67/**
68 * Converts a VMM pointer into a VM pointer.
69 * @returns Pointer to the VM structure the VMM is part of.
70 * @param pVMM Pointer to VMM instance data.
71 */
72#define VMM2VM(pVMM) ( (PVM)((char*)pVMM - pVMM->offVM) )
73
74
75/**
76 * Switcher function, HC to RC.
77 *
78 * @param pVM The VM handle.
79 * @returns Return code indicating the action to take.
80 */
81typedef DECLASMTYPE(int) FNVMMSWITCHERHC(PVM pVM);
82/** Pointer to switcher function. */
83typedef FNVMMSWITCHERHC *PFNVMMSWITCHERHC;
84
85/**
86 * Switcher function, RC to HC.
87 *
88 * @param rc VBox status code.
89 */
90typedef DECLASMTYPE(void) FNVMMSWITCHERRC(int rc);
91/** Pointer to switcher function. */
92typedef FNVMMSWITCHERRC *PFNVMMSWITCHERRC;
93
94
95/**
96 * The ring-0 logger instance wrapper.
97 *
98 * We need to be able to find the VM handle from the logger instance, so we wrap
99 * it in this structure.
100 */
101typedef struct VMMR0LOGGER
102{
103 /** Pointer to the VM handle. */
104 R0PTRTYPE(PVM) pVM;
105 /** Size of the allocated logger instance (Logger). */
106 uint32_t cbLogger;
107 /** Flag indicating whether we've create the logger Ring-0 instance yet. */
108 bool fCreated;
109 /** Flag indicating whether we've disabled flushing (world switch) or not. */
110 bool fFlushingDisabled;
111 /** Flag indicating whether we've registered the instance already. */
112 bool fRegistered;
113 bool a8Alignment;
114#if HC_ARCH_BITS == 32
115 uint32_t u32Alignment;
116#endif
117 /** The ring-0 logger instance. This extends beyond the size. */
118 RTLOGGER Logger;
119} VMMR0LOGGER;
120/** Pointer to a ring-0 logger instance wrapper. */
121typedef VMMR0LOGGER *PVMMR0LOGGER;
122
123
124/**
125 * Jump buffer for the setjmp/longjmp like constructs used to
126 * quickly 'call' back into Ring-3.
127 */
128typedef struct VMMR0JMPBUF
129{
130 /** Traditional jmp_buf stuff
131 * @{ */
132#if HC_ARCH_BITS == 32
133 uint32_t ebx;
134 uint32_t esi;
135 uint32_t edi;
136 uint32_t ebp;
137 uint32_t esp;
138 uint32_t eip;
139 uint32_t u32Padding;
140#endif
141#if HC_ARCH_BITS == 64
142 uint64_t rbx;
143# ifdef RT_OS_WINDOWS
144 uint64_t rsi;
145 uint64_t rdi;
146# endif
147 uint64_t rbp;
148 uint64_t r12;
149 uint64_t r13;
150 uint64_t r14;
151 uint64_t r15;
152 uint64_t rsp;
153 uint64_t rip;
154#endif
155 /** @} */
156
157 /** Flag that indicates that we've done a ring-3 call. */
158 bool fInRing3Call;
159 /** The number of bytes we've saved. */
160 uint32_t cbSavedStack;
161 /** Pointer to the buffer used to save the stack.
162 * This is assumed to be 8KB. */
163 RTR0PTR pvSavedStack;
164 /** Esp we we match against esp on resume to make sure the stack wasn't relocated. */
165 RTHCUINTREG SpCheck;
166 /** The esp we should resume execution with after the restore. */
167 RTHCUINTREG SpResume;
168 /** ESP/RSP at the time of the jump to ring 3. */
169 RTHCUINTREG SavedEsp;
170 /** EBP/RBP at the time of the jump to ring 3. */
171 RTHCUINTREG SavedEbp;
172
173 /** Stats: Max amount of stack used. */
174 uint32_t cbUsedMax;
175 /** Stats: Average stack usage. (Avg = cbUsedTotal / cUsedTotal) */
176 uint32_t cbUsedAvg;
177 /** Stats: Total amount of stack used. */
178 uint64_t cbUsedTotal;
179 /** Stats: Number of stack usages. */
180 uint64_t cUsedTotal;
181} VMMR0JMPBUF;
182/** Pointer to a ring-0 jump buffer. */
183typedef VMMR0JMPBUF *PVMMR0JMPBUF;
184
185
186/**
187 * VMM Data (part of VM)
188 */
189typedef struct VMM
190{
191 /** Offset to the VM structure.
192 * See VMM2VM(). */
193 RTINT offVM;
194
195 /** @name World Switcher and Related
196 * @{
197 */
198 /** Size of the core code. */
199 RTUINT cbCoreCode;
200 /** Physical address of core code. */
201 RTHCPHYS HCPhysCoreCode;
202 /** Pointer to core code ring-3 mapping - contiguous memory.
203 * At present this only means the context switcher code. */
204 RTR3PTR pvCoreCodeR3;
205 /** Pointer to core code ring-0 mapping - contiguous memory.
206 * At present this only means the context switcher code. */
207 RTR0PTR pvCoreCodeR0;
208 /** Pointer to core code guest context mapping. */
209 RTRCPTR pvCoreCodeRC;
210 RTRCPTR pRCPadding0; /**< Alignment padding */
211#ifdef VBOX_WITH_NMI
212 /** The guest context address of the APIC (host) mapping. */
213 RTRCPTR GCPtrApicBase;
214 RTRCPTR pRCPadding1; /**< Alignment padding */
215#endif
216 /** The current switcher.
217 * This will be set before the VMM is fully initialized. */
218 VMMSWITCHER enmSwitcher;
219 /** Flag to disable the switcher permanently (VMX) (boolean) */
220 bool fSwitcherDisabled;
221 /** Array of offsets to the different switchers within the core code. */
222 RTUINT aoffSwitchers[VMMSWITCHER_MAX];
223
224 /** Resume Guest Execution. See CPUMGCResumeGuest(). */
225 RTRCPTR pfnCPUMRCResumeGuest;
226 /** Resume Guest Execution in V86 mode. See CPUMGCResumeGuestV86(). */
227 RTRCPTR pfnCPUMRCResumeGuestV86;
228 /** Call Trampoline. See vmmGCCallTrampoline(). */
229 RTRCPTR pfnCallTrampolineRC;
230 /** Guest to host switcher entry point. */
231 RCPTRTYPE(PFNVMMSWITCHERRC) pfnGuestToHostRC;
232 /** Host to guest switcher entry point. */
233 R0PTRTYPE(PFNVMMSWITCHERHC) pfnHostToGuestR0;
234 /** @} */
235
236 /** @name Logging
237 * @{
238 */
239 /** Size of the allocated logger instance (pRCLoggerRC/pRCLoggerR3). */
240 uint32_t cbRCLogger;
241 /** Pointer to the RC logger instance - RC Ptr.
242 * This is NULL if logging is disabled. */
243 RCPTRTYPE(PRTLOGGERRC) pRCLoggerRC;
244 /** Pointer to the GC logger instance - R3 Ptr.
245 * This is NULL if logging is disabled. */
246 R3PTRTYPE(PRTLOGGERRC) pRCLoggerR3;
247 /** Pointer to the GC release logger instance - R3 Ptr. */
248 R3PTRTYPE(PRTLOGGERRC) pRCRelLoggerR3;
249 /** Pointer to the GC release logger instance - RC Ptr. */
250 RCPTRTYPE(PRTLOGGERRC) pRCRelLoggerRC;
251 /** Size of the allocated release logger instance (pRCRelLoggerRC/pRCRelLoggerR3).
252 * This may differ from cbRCLogger. */
253 uint32_t cbRCRelLogger;
254 /** @} */
255
256 /** The EMT yield timer. */
257 PTMTIMERR3 pYieldTimer;
258 /** The period to the next timeout when suspended or stopped.
259 * This is 0 when running. */
260 uint32_t cYieldResumeMillies;
261 /** The EMT yield timer interval (milliseconds). */
262 uint32_t cYieldEveryMillies;
263 /** The timestamp of the previous yield. (nano) */
264 uint64_t u64LastYield;
265
266 /** Critical section.
267 * Use for synchronizing all VCPUs
268 */
269 RTCRITSECT CritSectSync;
270
271 /** Buffer for storing the standard assertion message for a ring-0 assertion.
272 * Used for saving the assertion message text for the release log and guru
273 * meditation dump. */
274 char szRing0AssertMsg1[512];
275 /** Buffer for storing the custom message for a ring-0 assertion. */
276 char szRing0AssertMsg2[256];
277
278 /** Number of VMMR0_DO_RUN_GC calls. */
279 STAMCOUNTER StatRunRC;
280
281 /** Statistics for each of the RC/R0 return codes.
282 * @{ */
283 STAMCOUNTER StatRZRetNormal;
284 STAMCOUNTER StatRZRetInterrupt;
285 STAMCOUNTER StatRZRetInterruptHyper;
286 STAMCOUNTER StatRZRetGuestTrap;
287 STAMCOUNTER StatRZRetRingSwitch;
288 STAMCOUNTER StatRZRetRingSwitchInt;
289 STAMCOUNTER StatRZRetExceptionPrivilege;
290 STAMCOUNTER StatRZRetStaleSelector;
291 STAMCOUNTER StatRZRetIRETTrap;
292 STAMCOUNTER StatRZRetEmulate;
293 STAMCOUNTER StatRZRetIOBlockEmulate;
294 STAMCOUNTER StatRZRetPatchEmulate;
295 STAMCOUNTER StatRZRetIORead;
296 STAMCOUNTER StatRZRetIOWrite;
297 STAMCOUNTER StatRZRetMMIORead;
298 STAMCOUNTER StatRZRetMMIOWrite;
299 STAMCOUNTER StatRZRetMMIOPatchRead;
300 STAMCOUNTER StatRZRetMMIOPatchWrite;
301 STAMCOUNTER StatRZRetMMIOReadWrite;
302 STAMCOUNTER StatRZRetLDTFault;
303 STAMCOUNTER StatRZRetGDTFault;
304 STAMCOUNTER StatRZRetIDTFault;
305 STAMCOUNTER StatRZRetTSSFault;
306 STAMCOUNTER StatRZRetPDFault;
307 STAMCOUNTER StatRZRetCSAMTask;
308 STAMCOUNTER StatRZRetSyncCR3;
309 STAMCOUNTER StatRZRetMisc;
310 STAMCOUNTER StatRZRetPatchInt3;
311 STAMCOUNTER StatRZRetPatchPF;
312 STAMCOUNTER StatRZRetPatchGP;
313 STAMCOUNTER StatRZRetPatchIretIRQ;
314 STAMCOUNTER StatRZRetRescheduleREM;
315 STAMCOUNTER StatRZRetToR3;
316 STAMCOUNTER StatRZRetTimerPending;
317 STAMCOUNTER StatRZRetInterruptPending;
318 STAMCOUNTER StatRZRetCallHost;
319 STAMCOUNTER StatRZRetPATMDuplicateFn;
320 STAMCOUNTER StatRZRetPGMChangeMode;
321 STAMCOUNTER StatRZRetEmulHlt;
322 STAMCOUNTER StatRZRetPendingRequest;
323 STAMCOUNTER StatRZCallPDMLock;
324 STAMCOUNTER StatRZCallLogFlush;
325 STAMCOUNTER StatRZCallPDMQueueFlush;
326 STAMCOUNTER StatRZCallPGMPoolGrow;
327 STAMCOUNTER StatRZCallPGMMapChunk;
328 STAMCOUNTER StatRZCallPGMAllocHandy;
329 STAMCOUNTER StatRZCallRemReplay;
330 STAMCOUNTER StatRZCallVMSetError;
331 STAMCOUNTER StatRZCallVMSetRuntimeError;
332 STAMCOUNTER StatRZCallPGMLock;
333 /** @} */
334} VMM;
335/** Pointer to VMM. */
336typedef VMM *PVMM;
337
338
339/**
340 * VMMCPU Data (part of VMCPU)
341 */
342typedef struct VMMCPU
343{
344 /** Offset to the VMCPU structure.
345 * See VMM2VMCPU(). */
346 RTINT offVMCPU;
347
348 /** The last RC/R0 return code. */
349 int32_t iLastGZRc;
350
351 /** VMM stack, pointer to the top of the stack in R3.
352 * Stack is allocated from the hypervisor heap and is page aligned
353 * and always writable in RC. */
354 R3PTRTYPE(uint8_t *) pbEMTStackR3;
355 /** Pointer to the bottom of the stack - needed for doing relocations. */
356 RCPTRTYPE(uint8_t *) pbEMTStackRC;
357 /** Pointer to the bottom of the stack - needed for doing relocations. */
358 RCPTRTYPE(uint8_t *) pbEMTStackBottomRC;
359
360#ifdef LOG_ENABLED
361 /** Pointer to the R0 logger instance - R3 Ptr.
362 * This is NULL if logging is disabled. */
363 R3PTRTYPE(PVMMR0LOGGER) pR0LoggerR3;
364 /** Pointer to the R0 logger instance - R0 Ptr.
365 * This is NULL if logging is disabled. */
366 R0PTRTYPE(PVMMR0LOGGER) pR0LoggerR0;
367#endif
368
369 /** @name CallHost
370 * @{ */
371 /** The pending operation. */
372 VMMCALLHOST enmCallHostOperation;
373 /** The result of the last operation. */
374 int32_t rcCallHost;
375#if HC_ARCH_BITS == 32
376 uint32_t padding;
377#endif
378 /** The argument to the operation. */
379 uint64_t u64CallHostArg;
380 /** The Ring-0 jmp buffer. */
381 VMMR0JMPBUF CallHostR0JmpBuf;
382 /** @} */
383
384} VMMCPU;
385/** Pointer to VMMCPU. */
386typedef VMMCPU *PVMMCPU;
387
388
389/**
390 * The VMMGCEntry() codes.
391 */
392typedef enum VMMGCOPERATION
393{
394 /** Do GC module init. */
395 VMMGC_DO_VMMGC_INIT = 1,
396
397 /** The first Trap testcase. */
398 VMMGC_DO_TESTCASE_TRAP_FIRST = 0x0dead000,
399 /** Trap 0 testcases, uArg selects the variation. */
400 VMMGC_DO_TESTCASE_TRAP_0 = VMMGC_DO_TESTCASE_TRAP_FIRST,
401 /** Trap 1 testcases, uArg selects the variation. */
402 VMMGC_DO_TESTCASE_TRAP_1,
403 /** Trap 2 testcases, uArg selects the variation. */
404 VMMGC_DO_TESTCASE_TRAP_2,
405 /** Trap 3 testcases, uArg selects the variation. */
406 VMMGC_DO_TESTCASE_TRAP_3,
407 /** Trap 4 testcases, uArg selects the variation. */
408 VMMGC_DO_TESTCASE_TRAP_4,
409 /** Trap 5 testcases, uArg selects the variation. */
410 VMMGC_DO_TESTCASE_TRAP_5,
411 /** Trap 6 testcases, uArg selects the variation. */
412 VMMGC_DO_TESTCASE_TRAP_6,
413 /** Trap 7 testcases, uArg selects the variation. */
414 VMMGC_DO_TESTCASE_TRAP_7,
415 /** Trap 8 testcases, uArg selects the variation. */
416 VMMGC_DO_TESTCASE_TRAP_8,
417 /** Trap 9 testcases, uArg selects the variation. */
418 VMMGC_DO_TESTCASE_TRAP_9,
419 /** Trap 0a testcases, uArg selects the variation. */
420 VMMGC_DO_TESTCASE_TRAP_0A,
421 /** Trap 0b testcases, uArg selects the variation. */
422 VMMGC_DO_TESTCASE_TRAP_0B,
423 /** Trap 0c testcases, uArg selects the variation. */
424 VMMGC_DO_TESTCASE_TRAP_0C,
425 /** Trap 0d testcases, uArg selects the variation. */
426 VMMGC_DO_TESTCASE_TRAP_0D,
427 /** Trap 0e testcases, uArg selects the variation. */
428 VMMGC_DO_TESTCASE_TRAP_0E,
429 /** The last trap testcase (exclusive). */
430 VMMGC_DO_TESTCASE_TRAP_LAST,
431 /** Testcase for checking interrupt forwarding. */
432 VMMGC_DO_TESTCASE_HYPER_INTERRUPT,
433 /** Switching testing and profiling stub. */
434 VMMGC_DO_TESTCASE_NOP,
435 /** Testcase for checking interrupt masking.. */
436 VMMGC_DO_TESTCASE_INTERRUPT_MASKING,
437 /** Switching testing and profiling stub. */
438 VMMGC_DO_TESTCASE_HWACCM_NOP,
439
440 /** The usual 32-bit hack. */
441 VMMGC_DO_32_BIT_HACK = 0x7fffffff
442} VMMGCOPERATION;
443
444
445RT_C_DECLS_BEGIN
446
447#ifdef IN_RING3
448int vmmR3SwitcherInit(PVM pVM);
449void vmmR3SwitcherRelocate(PVM pVM, RTGCINTPTR offDelta);
450#endif /* IN_RING3 */
451
452#ifdef IN_RING0
453/**
454 * World switcher assembly routine.
455 * It will call VMMGCEntry().
456 *
457 * @returns return code from VMMGCEntry().
458 * @param pVM The VM in question.
459 * @param uArg See VMMGCEntry().
460 * @internal
461 */
462DECLASM(int) vmmR0WorldSwitch(PVM pVM, unsigned uArg);
463
464/**
465 * Callback function for vmmR0CallHostSetJmp.
466 *
467 * @returns VBox status code.
468 * @param pVM The VM handle.
469 */
470typedef DECLCALLBACK(int) FNVMMR0SETJMP(PVM pVM, PVMCPU pVCpu);
471/** Pointer to FNVMMR0SETJMP(). */
472typedef FNVMMR0SETJMP *PFNVMMR0SETJMP;
473
474/**
475 * The setjmp variant used for calling Ring-3.
476 *
477 * This differs from the normal setjmp in that it will resume VMMR0CallHost if we're
478 * in the middle of a ring-3 call. Another differences is the function pointer and
479 * argument. This has to do with resuming code and the stack frame of the caller.
480 *
481 * @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallHostLongJmp.
482 * @param pJmpBuf The jmp_buf to set.
483 * @param pfn The function to be called when not resuming..
484 * @param pVM The argument of that function.
485 */
486DECLASM(int) vmmR0CallHostSetJmp(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMP pfn, PVM pVM, PVMCPU pVCpu);
487
488/**
489 * Callback function for vmmR0CallHostSetJmpEx.
490 *
491 * @returns VBox status code.
492 * @param pvUser The user argument.
493 */
494typedef DECLCALLBACK(int) FNVMMR0SETJMPEX(void *pvUser);
495/** Pointer to FNVMMR0SETJMP(). */
496typedef FNVMMR0SETJMPEX *PFNVMMR0SETJMPEX;
497
498/**
499 * Same as vmmR0CallHostSetJmp except for the function signature.
500 *
501 * @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallHostLongJmp.
502 * @param pJmpBuf The jmp_buf to set.
503 * @param pfn The function to be called when not resuming..
504 * @param pvUser The argument of that function.
505 */
506DECLASM(int) vmmR0CallHostSetJmpEx(PVMMR0JMPBUF pJmpBuf, PFNVMMR0SETJMPEX pfn, void *pvUser);
507
508
509/**
510 * Worker for VMMR0CallHost.
511 * This will save the stack and registers.
512 *
513 * @returns rc.
514 * @param pJmpBuf Pointer to the jump buffer.
515 * @param rc The return code.
516 */
517DECLASM(int) vmmR0CallHostLongJmp(PVMMR0JMPBUF pJmpBuf, int rc);
518
519/**
520 * Internal R0 logger worker: Logger wrapper.
521 */
522VMMR0DECL(void) vmmR0LoggerWrapper(const char *pszFormat, ...);
523
524/**
525 * Internal R0 logger worker: Flush logger.
526 *
527 * @param pLogger The logger instance to flush.
528 * @remark This function must be exported!
529 */
530VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger);
531
532#endif /* IN_RING0 */
533#ifdef IN_RC
534
535/**
536 * Internal GC logger worker: Logger wrapper.
537 */
538VMMRCDECL(void) vmmGCLoggerWrapper(const char *pszFormat, ...);
539
540/**
541 * Internal GC release logger worker: Logger wrapper.
542 */
543VMMRCDECL(void) vmmGCRelLoggerWrapper(const char *pszFormat, ...);
544
545/**
546 * Internal GC logger worker: Flush logger.
547 *
548 * @returns VINF_SUCCESS.
549 * @param pLogger The logger instance to flush.
550 * @remark This function must be exported!
551 */
552VMMRCDECL(int) vmmGCLoggerFlush(PRTLOGGERRC pLogger);
553
554/** @name Trap testcases and related labels.
555 * @{ */
556DECLASM(void) vmmGCEnableWP(void);
557DECLASM(void) vmmGCDisableWP(void);
558DECLASM(int) vmmGCTestTrap3(void);
559DECLASM(int) vmmGCTestTrap8(void);
560DECLASM(int) vmmGCTestTrap0d(void);
561DECLASM(int) vmmGCTestTrap0e(void);
562DECLASM(int) vmmGCTestTrap0e_FaultEIP(void); /**< a label */
563DECLASM(int) vmmGCTestTrap0e_ResumeEIP(void); /**< a label */
564/** @} */
565
566#endif /* IN_RC */
567
568RT_C_DECLS_END
569
570/** @} */
571
572#endif
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