/**
* Called on the EMT for the VCpu.
*
* @returns VBox status code.
*
* @param pVM The VM handle.
* @param idCpu The ID of the CPU context.
* @param pAddress The address.
* @param fReadOnly Whether returning a read-only page is fine or not.
* @param ppvR3Ptr Where to return the address.
*/
static DECLCALLBACK(int) dbgfR3AddrToVolatileR3PtrOnVCpu(PVM pVM, VMCPUID idCpu, PDBGFADDRESS pAddress, bool fReadOnly, void **ppvR3Ptr)
{
Assert(idCpu == VMMGetCpuId(pVM));
int rc;
if (pAddress->fFlags & DBGFADDRESS_FLAGS_HMA)
{
rc = VERR_NOT_SUPPORTED; /** @todo create some dedicated errors for this stuff. */
/** @todo this may assert, create a debug version of this which doesn't. */
if (MMHyperIsInsideArea(pVM, pAddress->FlatPtr))
{
void *pv = MMHyperRCToCC(pVM, (RTRCPTR)pAddress->FlatPtr);
if (pv)
{
*ppvR3Ptr = pv;
rc = VINF_SUCCESS;
}
}
}
else
{
/*
* This is a tad ugly, but it gets the job done.
*/
PGMPAGEMAPLOCK Lock;
if (pAddress->fFlags & DBGFADDRESS_FLAGS_PHYS)
{
if (fReadOnly)
rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, pAddress->FlatPtr, (void const **)ppvR3Ptr, &Lock);
else
rc = PGMPhysGCPhys2CCPtr(pVM, pAddress->FlatPtr, ppvR3Ptr, &Lock);
}
else
{
PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
if (fReadOnly)
rc = PGMPhysGCPtr2CCPtrReadOnly(pVCpu, pAddress->FlatPtr, (void const **)ppvR3Ptr, &Lock);
else
rc = PGMPhysGCPtr2CCPtr(pVCpu, pAddress->FlatPtr, ppvR3Ptr, &Lock);
}
if (RT_SUCCESS(rc))
PGMPhysReleasePageMappingLock(pVM, &Lock);
}
return rc;
}
/**
* Checks if an address is in the HMA or not.
* @returns true if it's inside the HMA.
* @returns flase if it's not inside the HMA.
* @param pVM The VM handle.
* @param FlatPtr The address in question.
*/
DECLINLINE(bool) dbgfR3IsHMA(PVM pVM, RTGCUINTPTR FlatPtr)
{
return MMHyperIsInsideArea(pVM, FlatPtr);
}
/**
* Find symbol by address (nearest).
*
* @returns VBox status.
* @param pVM VM handle.
* @param Address Address.
* @param poffDisplacement Where to store the symbol displacement from Address.
* @param pSymbol Where to store the symbol info.
*/
VMMR3DECL(int) DBGFR3SymbolByAddr(PVM pVM, RTGCUINTPTR Address, PRTGCINTPTR poffDisplacement, PDBGFSYMBOL pSymbol)
{
/*
* Lazy init.
*/
if (!pVM->dbgf.s.fSymInited)
{
int rc = dbgfR3SymLazyInit(pVM);
if (RT_FAILURE(rc))
return rc;
}
/*
* Look it up.
*/
#ifdef HAVE_DBGHELP
char achBuffer[sizeof(IMAGEHLP_SYMBOL64) + DBGF_SYMBOL_NAME_LENGTH * sizeof(TCHAR) + sizeof(ULONG64)];
PIMAGEHLP_SYMBOL64 pSym = (PIMAGEHLP_SYMBOL64)&achBuffer[0];
pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
pSym->MaxNameLength = DBGF_SYMBOL_NAME_LENGTH;
if (SymGetSymFromAddr64(pVM, Address, (PDWORD64)poffDisplacement, pSym))
{
pSymbol->Value = (RTGCUINTPTR)pSym->Address;
pSymbol->cb = pSym->Size;
pSymbol->fFlags = pSym->Flags;
strcpy(pSymbol->szName, pSym->Name);
return VINF_SUCCESS;
}
//return win32Error(pVM);
#else
PDBGFSYM pSym = dbgfR3SymbolGetAddr(pVM, Address);
if (pSym)
{
pSymbol->Value = pSym->Core.Key;
pSymbol->cb = pSym->Core.KeyLast - pSym->Core.Key + 1;
pSymbol->fFlags = 0;
pSymbol->szName[0] = '\0';
strncat(pSymbol->szName, pSym->szName, sizeof(pSymbol->szName) - 1);
if (poffDisplacement)
*poffDisplacement = Address - pSymbol->Value;
return VINF_SUCCESS;
}
#endif
/*
* Try PDM.
*/
if (MMHyperIsInsideArea(pVM, Address))
{
char szModName[64];
RTRCPTR RCPtrMod;
char szNearSym1[260];
RTRCPTR RCPtrNearSym1;
char szNearSym2[260];
RTRCPTR RCPtrNearSym2;
int rc = PDMR3LdrQueryRCModFromPC(pVM, Address,
&szModName[0], sizeof(szModName), &RCPtrMod,
&szNearSym1[0], sizeof(szNearSym1), &RCPtrNearSym1,
&szNearSym2[0], sizeof(szNearSym2), &RCPtrNearSym2);
if (RT_SUCCESS(rc) && szNearSym1[0])
{
pSymbol->Value = RCPtrNearSym1;
pSymbol->cb = RCPtrNearSym2 > RCPtrNearSym1 ? RCPtrNearSym2 - RCPtrNearSym1 : 0;
pSymbol->fFlags = 0;
pSymbol->szName[0] = '\0';
strncat(pSymbol->szName, szNearSym1, sizeof(pSymbol->szName) - 1);
if (poffDisplacement)
*poffDisplacement = Address - pSymbol->Value;
return VINF_SUCCESS;
}
}
return VERR_SYMBOL_NOT_FOUND;
}