/**
* Handle registration worker.
* This allocates the structure, initializes the common fields and inserts into the list.
* Upon successful return the we're inside the crit sect and the caller must leave it.
*
* @returns VBox status code.
* @param pUVM The user mode VM handle.
* @param pszName The identifier of the info.
* @param pszDesc The description of the info and any arguments the handler may take.
* @param fFlags The flags.
* @param ppInfo Where to store the created
*/
static int dbgfR3InfoRegister(PUVM pUVM, const char *pszName, const char *pszDesc, uint32_t fFlags, PDBGFINFO *ppInfo)
{
/*
* Validate.
*/
AssertPtrReturn(pszName, VERR_INVALID_POINTER);
AssertReturn(*pszName, VERR_INVALID_PARAMETER);
AssertPtrReturn(pszDesc, VERR_INVALID_POINTER);
AssertMsgReturn(!(fFlags & ~(DBGFINFO_FLAGS_RUN_ON_EMT)), ("fFlags=%#x\n", fFlags), VERR_INVALID_PARAMETER);
/*
* Allocate and initialize.
*/
int rc;
size_t cchName = strlen(pszName) + 1;
PDBGFINFO pInfo = (PDBGFINFO)MMR3HeapAllocU(pUVM, MM_TAG_DBGF_INFO, RT_OFFSETOF(DBGFINFO, szName[cchName]));
if (pInfo)
{
pInfo->enmType = DBGFINFOTYPE_INVALID;
pInfo->fFlags = fFlags;
pInfo->pszDesc = pszDesc;
pInfo->cchName = cchName - 1;
memcpy(pInfo->szName, pszName, cchName);
/* lazy init */
rc = VINF_SUCCESS;
if (!RTCritSectIsInitialized(&pUVM->dbgf.s.InfoCritSect))
rc = dbgfR3InfoInit(pUVM);
if (RT_SUCCESS(rc))
{
/*
* Insert in alphabetical order.
*/
rc = RTCritSectEnter(&pUVM->dbgf.s.InfoCritSect);
AssertRC(rc);
PDBGFINFO pPrev = NULL;
PDBGFINFO pCur;
for (pCur = pUVM->dbgf.s.pInfoFirst; pCur; pPrev = pCur, pCur = pCur->pNext)
if (strcmp(pszName, pCur->szName) < 0)
break;
pInfo->pNext = pCur;
if (pPrev)
pPrev->pNext = pInfo;
else
pUVM->dbgf.s.pInfoFirst = pInfo;
*ppInfo = pInfo;
return VINF_SUCCESS;
}
MMR3HeapFree(pInfo);
}
else
rc = VERR_NO_MEMORY;
return rc;
}
/**
* Duplicates the specified string.
*
* @returns Pointer to the duplicate.
* @returns NULL on failure or when input NULL.
* @param pUVM Pointer to the user mode VM structure.
* @param enmTag Statistics tag. Statistics are collected on a per tag
* basis in addition to a global one. Thus we can easily
* identify how memory is used by the VM. See MM_TAG_*.
* @param psz The string to duplicate. NULL is allowed.
*/
VMMR3DECL(char *) MMR3HeapStrDupU(PUVM pUVM, MMTAG enmTag, const char *psz)
{
if (!psz)
return NULL;
AssertPtr(psz);
size_t cch = strlen(psz) + 1;
char *pszDup = (char *)MMR3HeapAllocU(pUVM, enmTag, cch);
if (pszDup)
memcpy(pszDup, psz, cch);
return pszDup;
}
/**
* Allocating string printf.
*
* @returns Pointer to the string.
* @param pUVM Pointer to the user mode VM structure.
* @param enmTag The statistics tag.
* @param pszFormat The format string.
* @param va Format arguments.
*/
VMMR3DECL(char *) MMR3HeapAPrintfVU(PUVM pUVM, MMTAG enmTag, const char *pszFormat, va_list va)
{
/*
* The lazy bird way.
*/
char *psz;
int cch = RTStrAPrintfV(&psz, pszFormat, va);
if (cch < 0)
return NULL;
Assert(psz[cch] == '\0');
char *pszRet = (char *)MMR3HeapAllocU(pUVM, enmTag, cch + 1);
if (pszRet)
memcpy(pszRet, psz, cch + 1);
RTStrFree(psz);
return pszRet;
}
/**
* Adds the address space to the database.
*
* @returns VBox status code.
* @param pUVM The user mode VM handle.
* @param hDbgAs The address space handle. The reference of the caller
* will NOT be consumed.
* @param ProcId The process id or NIL_RTPROCESS.
*/
VMMR3DECL(int) DBGFR3AsAdd(PUVM pUVM, RTDBGAS hDbgAs, RTPROCESS ProcId)
{
/*
* Input validation.
*/
UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
const char *pszName = RTDbgAsName(hDbgAs);
if (!pszName)
return VERR_INVALID_HANDLE;
uint32_t cRefs = RTDbgAsRetain(hDbgAs);
if (cRefs == UINT32_MAX)
return VERR_INVALID_HANDLE;
/*
* Allocate a tracking node.
*/
int rc = VERR_NO_MEMORY;
PDBGFASDBNODE pDbNode = (PDBGFASDBNODE)MMR3HeapAllocU(pUVM, MM_TAG_DBGF_AS, sizeof(*pDbNode));
if (pDbNode)
{
pDbNode->HandleCore.Key = hDbgAs;
pDbNode->PidCore.Key = ProcId;
pDbNode->NameCore.pszString = pszName;
pDbNode->NameCore.cchString = strlen(pszName);
DBGF_AS_DB_LOCK_WRITE(pUVM);
if (RTStrSpaceInsert(&pUVM->dbgf.s.AsNameSpace, &pDbNode->NameCore))
{
if (RTAvlPVInsert(&pUVM->dbgf.s.AsHandleTree, &pDbNode->HandleCore))
{
DBGF_AS_DB_UNLOCK_WRITE(pUVM);
return VINF_SUCCESS;
}
/* bail out */
RTStrSpaceRemove(&pUVM->dbgf.s.AsNameSpace, pszName);
}
DBGF_AS_DB_UNLOCK_WRITE(pUVM);
MMR3HeapFree(pDbNode);
}
RTDbgAsRelease(hDbgAs);
return rc;
}
/***
* Worker for mmR3UkHeapAlloc that creates and adds a new sub-heap.
*
* @returns Pointer to the new sub-heap.
* @param pHeap The heap
* @param cbSubHeap The size of the sub-heap.
*/
static PMMUKHEAPSUB mmR3UkHeapAddSubHeap(PMMUKHEAP pHeap, size_t cbSubHeap)
{
PMMUKHEAPSUB pSubHeap = (PMMUKHEAPSUB)MMR3HeapAllocU(pHeap->pUVM, MM_TAG_MM/*_UK_HEAP*/, sizeof(*pSubHeap));
if (pSubHeap)
{
pSubHeap->cb = cbSubHeap;
int rc = SUPR3PageAllocEx(pSubHeap->cb >> PAGE_SHIFT, 0, &pSubHeap->pv, &pSubHeap->pvR0, NULL);
if (RT_SUCCESS(rc))
{
rc = RTHeapSimpleInit(&pSubHeap->hSimple, pSubHeap->pv, pSubHeap->cb);
if (RT_SUCCESS(rc))
{
pSubHeap->pNext = pHeap->pSubHeapHead;
pHeap->pSubHeapHead = pSubHeap;
return pSubHeap;
}
/* bail out */
SUPR3PageFreeEx(pSubHeap->pv, pSubHeap->cb >> PAGE_SHIFT);
}
MMR3HeapFree(pSubHeap);
}
return NULL;
}
/**
* Walks the entire stack allocating memory as we walk.
*/
static DECLCALLBACK(int) dbgfR3StackWalkCtxFull(PUVM pUVM, VMCPUID idCpu, PCCPUMCTXCORE pCtxCore, RTDBGAS hAs,
DBGFCODETYPE enmCodeType,
PCDBGFADDRESS pAddrFrame,
PCDBGFADDRESS pAddrStack,
PCDBGFADDRESS pAddrPC,
DBGFRETURNTYPE enmReturnType,
PCDBGFSTACKFRAME *ppFirstFrame)
{
/* alloc first frame. */
PDBGFSTACKFRAME pCur = (PDBGFSTACKFRAME)MMR3HeapAllocZU(pUVM, MM_TAG_DBGF_STACK, sizeof(*pCur));
if (!pCur)
return VERR_NO_MEMORY;
/*
* Initialize the frame.
*/
pCur->pNextInternal = NULL;
pCur->pFirstInternal = pCur;
int rc = VINF_SUCCESS;
if (pAddrPC)
pCur->AddrPC = *pAddrPC;
else if (enmCodeType != DBGFCODETYPE_GUEST)
DBGFR3AddrFromFlat(pUVM, &pCur->AddrPC, pCtxCore->rip);
else
rc = DBGFR3AddrFromSelOff(pUVM, idCpu, &pCur->AddrPC, pCtxCore->cs.Sel, pCtxCore->rip);
if (RT_SUCCESS(rc))
{
if (enmReturnType == DBGFRETURNTYPE_INVALID)
switch (pCur->AddrPC.fFlags & DBGFADDRESS_FLAGS_TYPE_MASK)
{
case DBGFADDRESS_FLAGS_FAR16: pCur->enmReturnType = DBGFRETURNTYPE_NEAR16; break;
case DBGFADDRESS_FLAGS_FAR32: pCur->enmReturnType = DBGFRETURNTYPE_NEAR32; break;
case DBGFADDRESS_FLAGS_FAR64: pCur->enmReturnType = DBGFRETURNTYPE_NEAR64; break;
case DBGFADDRESS_FLAGS_RING0: pCur->enmReturnType = HC_ARCH_BITS == 64 ? DBGFRETURNTYPE_NEAR64 : DBGFRETURNTYPE_NEAR32; break;
default: pCur->enmReturnType = DBGFRETURNTYPE_NEAR32; break; /// @todo 64-bit guests
}
uint64_t fAddrMask;
if (enmCodeType == DBGFCODETYPE_RING0)
fAddrMask = HC_ARCH_BITS == 64 ? UINT64_MAX : UINT32_MAX;
else if (enmCodeType == DBGFCODETYPE_HYPER)
fAddrMask = UINT32_MAX;
else if (DBGFADDRESS_IS_FAR16(&pCur->AddrPC))
fAddrMask = UINT16_MAX;
else if (DBGFADDRESS_IS_FAR32(&pCur->AddrPC))
fAddrMask = UINT32_MAX;
else if (DBGFADDRESS_IS_FAR64(&pCur->AddrPC))
fAddrMask = UINT64_MAX;
else
{
PVMCPU pVCpu = VMMGetCpuById(pUVM->pVM, idCpu);
CPUMMODE CpuMode = CPUMGetGuestMode(pVCpu);
if (CpuMode == CPUMMODE_REAL)
fAddrMask = UINT16_MAX;
else if ( CpuMode == CPUMMODE_PROTECTED
|| !CPUMIsGuestIn64BitCode(pVCpu))
fAddrMask = UINT32_MAX;
else
fAddrMask = UINT64_MAX;
}
if (pAddrStack)
pCur->AddrStack = *pAddrStack;
else if (enmCodeType != DBGFCODETYPE_GUEST)
DBGFR3AddrFromFlat(pUVM, &pCur->AddrStack, pCtxCore->rsp & fAddrMask);
else
rc = DBGFR3AddrFromSelOff(pUVM, idCpu, &pCur->AddrStack, pCtxCore->ss.Sel, pCtxCore->rsp & fAddrMask);
if (pAddrFrame)
pCur->AddrFrame = *pAddrFrame;
else if (enmCodeType != DBGFCODETYPE_GUEST)
DBGFR3AddrFromFlat(pUVM, &pCur->AddrFrame, pCtxCore->rbp & fAddrMask);
else if (RT_SUCCESS(rc))
rc = DBGFR3AddrFromSelOff(pUVM, idCpu, &pCur->AddrFrame, pCtxCore->ss.Sel, pCtxCore->rbp & fAddrMask);
}
else
pCur->enmReturnType = enmReturnType;
/*
* The first frame.
*/
if (RT_SUCCESS(rc))
rc = dbgfR3StackWalk(pUVM, idCpu, hAs, pCur);
if (RT_FAILURE(rc))
{
DBGFR3StackWalkEnd(pCur);
return rc;
}
/*
* The other frames.
*/
DBGFSTACKFRAME Next = *pCur;
while (!(pCur->fFlags & (DBGFSTACKFRAME_FLAGS_LAST | DBGFSTACKFRAME_FLAGS_MAX_DEPTH | DBGFSTACKFRAME_FLAGS_LOOP)))
{
/* try walk. */
rc = dbgfR3StackWalk(pUVM, idCpu, hAs, &Next);
if (RT_FAILURE(rc))
break;
/* add the next frame to the chain. */
PDBGFSTACKFRAME pNext = (PDBGFSTACKFRAME)MMR3HeapAllocU(pUVM, MM_TAG_DBGF_STACK, sizeof(*pNext));
if (!pNext)
{
DBGFR3StackWalkEnd(pCur);
return VERR_NO_MEMORY;
}
*pNext = Next;
pCur->pNextInternal = pNext;
pCur = pNext;
Assert(pCur->pNextInternal == NULL);
/* check for loop */
for (PCDBGFSTACKFRAME pLoop = pCur->pFirstInternal;
pLoop && pLoop != pCur;
pLoop = pLoop->pNextInternal)
if (pLoop->AddrFrame.FlatPtr == pCur->AddrFrame.FlatPtr)
{
pCur->fFlags |= DBGFSTACKFRAME_FLAGS_LOOP;
break;
}
/* check for insane recursion */
if (pCur->iFrame >= 2048)
pCur->fFlags |= DBGFSTACKFRAME_FLAGS_MAX_DEPTH;
}
*ppFirstFrame = pCur->pFirstInternal;
return rc;
}
