/**
* Worker for DBGFR3SelQueryInfo that calls into SELM.
*/
static DECLCALLBACK(int) dbgfR3SelQueryInfo(PVM pVM, VMCPUID idCpu, RTSEL Sel, uint32_t fFlags, PDBGFSELINFO pSelInfo)
{
/*
* Make the query.
*/
int rc;
if (!(fFlags & DBGFSELQI_FLAGS_DT_SHADOW))
{
PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
VMCPU_ASSERT_EMT(pVCpu);
rc = SELMR3GetSelectorInfo(pVM, pVCpu, Sel, pSelInfo);
/*
* 64-bit mode HACKS for making data and stack selectors wide open when
* queried. This is voodoo magic.
*/
if (fFlags & DBGFSELQI_FLAGS_DT_ADJ_64BIT_MODE)
{
/* Expand 64-bit data and stack selectors. The check is a bit bogus... */
if ( RT_SUCCESS(rc)
&& (pSelInfo->fFlags & ( DBGFSELINFO_FLAGS_LONG_MODE | DBGFSELINFO_FLAGS_REAL_MODE | DBGFSELINFO_FLAGS_PROT_MODE
| DBGFSELINFO_FLAGS_GATE | DBGFSELINFO_FLAGS_HYPER
| DBGFSELINFO_FLAGS_INVALID | DBGFSELINFO_FLAGS_NOT_PRESENT))
== DBGFSELINFO_FLAGS_LONG_MODE
&& pSelInfo->cbLimit != ~(RTGCPTR)0
&& CPUMIsGuestIn64BitCode(pVCpu, CPUMGetGuestCtxCore(pVCpu)) )
{
pSelInfo->GCPtrBase = 0;
pSelInfo->cbLimit = ~(RTGCPTR)0;
}
else if ( Sel == 0
&& CPUMIsGuestIn64BitCode(pVCpu, CPUMGetGuestCtxCore(pVCpu)))
{
pSelInfo->GCPtrBase = 0;
pSelInfo->cbLimit = ~(RTGCPTR)0;
pSelInfo->Sel = 0;
pSelInfo->SelGate = 0;
pSelInfo->fFlags = DBGFSELINFO_FLAGS_LONG_MODE;
pSelInfo->u.Raw64.Gen.u1Present = 1;
pSelInfo->u.Raw64.Gen.u1Long = 1;
pSelInfo->u.Raw64.Gen.u1DescType = 1;
rc = VINF_SUCCESS;
}
}
}
else
{
if (HWACCMIsEnabled(pVM))
rc = VERR_INVALID_STATE;
else
rc = SELMR3GetShadowSelectorInfo(pVM, Sel, pSelInfo);
}
return rc;
}
/**
* Common worker for DBGFR3StackWalkBeginGuestEx, DBGFR3StackWalkBeginHyperEx,
* DBGFR3StackWalkBeginGuest and DBGFR3StackWalkBeginHyper.
*/
static int dbgfR3StackWalkBeginCommon(PUVM pUVM,
VMCPUID idCpu,
DBGFCODETYPE enmCodeType,
PCDBGFADDRESS pAddrFrame,
PCDBGFADDRESS pAddrStack,
PCDBGFADDRESS pAddrPC,
DBGFRETURNTYPE enmReturnType,
PCDBGFSTACKFRAME *ppFirstFrame)
{
/*
* Validate parameters.
*/
*ppFirstFrame = NULL;
UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
PVM pVM = pUVM->pVM;
VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
if (pAddrFrame)
AssertReturn(DBGFR3AddrIsValid(pUVM, pAddrFrame), VERR_INVALID_PARAMETER);
if (pAddrStack)
AssertReturn(DBGFR3AddrIsValid(pUVM, pAddrStack), VERR_INVALID_PARAMETER);
if (pAddrPC)
AssertReturn(DBGFR3AddrIsValid(pUVM, pAddrPC), VERR_INVALID_PARAMETER);
AssertReturn(enmReturnType >= DBGFRETURNTYPE_INVALID && enmReturnType < DBGFRETURNTYPE_END, VERR_INVALID_PARAMETER);
/*
* Get the CPUM context pointer and pass it on the specified EMT.
*/
RTDBGAS hAs;
PCCPUMCTXCORE pCtxCore;
switch (enmCodeType)
{
case DBGFCODETYPE_GUEST:
pCtxCore = CPUMGetGuestCtxCore(VMMGetCpuById(pVM, idCpu));
hAs = DBGF_AS_GLOBAL;
break;
case DBGFCODETYPE_HYPER:
pCtxCore = CPUMGetHyperCtxCore(VMMGetCpuById(pVM, idCpu));
hAs = DBGF_AS_RC_AND_GC_GLOBAL;
break;
case DBGFCODETYPE_RING0:
pCtxCore = NULL; /* No valid context present. */
hAs = DBGF_AS_R0;
break;
default:
AssertFailedReturn(VERR_INVALID_PARAMETER);
}
return VMR3ReqPriorityCallWaitU(pUVM, idCpu, (PFNRT)dbgfR3StackWalkCtxFull, 10,
pUVM, idCpu, pCtxCore, hAs, enmCodeType,
pAddrFrame, pAddrStack, pAddrPC, enmReturnType, ppFirstFrame);
}