TADDR
DacGetTargetVtForHostVt(LPCVOID vtHost, bool throwEx)
{
PVOID* host;
ULONG* targ;
ULONG i;
// The host vtable table exactly parallels the
// target vtable table, so just iterate to a match
// return the matching entry.
host = &g_dacHostVtPtrs.Thread;
targ = &g_dacGlobals.Thread__vtAddr;
for (i = 0; i < sizeof(g_dacHostVtPtrs) / sizeof(PVOID); i++)
{
if (*host == vtHost)
{
return *targ + DacGlobalBase();
}
host++;
targ++;
}
if (throwEx)
{
DacError(E_INVALIDARG);
}
return 0;
}
PWSTR DacGetVtNameW(TADDR targetVtable)
{
PWSTR pszRet = NULL;
ULONG *targ = &g_dacGlobals.Thread__vtAddr;
ULONG *targStart = targ;
for (ULONG i = 0; i < sizeof(g_dacHostVtPtrs) / sizeof(PVOID); i++)
{
if (targetVtable == (*targ + DacGlobalBase()))
{
pszRet = (PWSTR) *(g_dacVtStrings + (targ - targStart));
}
targ++;
}
return pszRet;
}
HRESULT
DacVirtualUnwind(DWORD threadId, PT_CONTEXT context, PT_KNONVOLATILE_CONTEXT_POINTERS contextPointers)
{
if (!g_dacImpl)
{
DacError(E_UNEXPECTED);
UNREACHABLE();
}
// The DAC code doesn't use these context pointers but zero them out to be safe.
if (contextPointers != NULL)
{
memset(contextPointers, 0, sizeof(T_KNONVOLATILE_CONTEXT_POINTERS));
}
HRESULT hr = S_OK;
#ifdef FEATURE_DATATARGET4
ReleaseHolder<ICorDebugDataTarget4> dt;
hr = g_dacImpl->m_pTarget->QueryInterface(IID_ICorDebugDataTarget4, (void **)&dt);
if (SUCCEEDED(hr))
{
hr = dt->VirtualUnwind(threadId, sizeof(CONTEXT), (BYTE*)context);
}
else
#endif
{
SIZE_T baseAddress = DacGlobalBase();
if (baseAddress == 0 || !PAL_VirtualUnwindOutOfProc(context, contextPointers, baseAddress, DacReadAllAdapter))
{
hr = E_FAIL;
}
}
return hr;
}
