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kern: implement KUserPointer (and test with QueryMemory) in advance of svc dev

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This commit is contained in:
Michael Scire
2020-02-20 09:05:01 -08:00
parent 9f9593e05f
commit efae01c165
17 changed files with 460 additions and 72 deletions
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31
libraries/libmesosphere/include/mesosphere/kern_k_handle_table.hpp
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@@ -26,6 +26,9 @@ namespace ams::kern {
return util::BitPack32{handle};
}
class KProcess;
class KThread;
class KHandleTable {
NON_COPYABLE(KHandleTable);
NON_MOVEABLE(KHandleTable);
@@ -125,6 +128,19 @@ namespace ams::kern {
template<typename T = KAutoObject>
ALWAYS_INLINE KScopedAutoObject<T> GetObject(ams::svc::Handle handle) const {
MESOSPHERE_ASSERT_THIS();
/* Handle pseudo-handles. */
if constexpr (std::is_same<T, KProcess>::value) {
if (handle == ams::svc::PseudoHandle::CurrentProcess) {
return GetCurrentProcessPointer();
}
} else if constexpr (std::is_same<T, KThread>::value) {
if (handle == ams::svc::PseudoHandle::CurrentThread) {
return GetCurrentThreadPointer();
}
}
/* Lock and look up in table. */
KScopedDisableDispatch dd;
KScopedSpinLock lk(this->lock);
@@ -139,6 +155,21 @@ namespace ams::kern {
ALWAYS_INLINE KScopedAutoObject<T> GetObjectForIpc(ams::svc::Handle handle) const {
static_assert(!std::is_base_of<KInterruptEvent, T>::value);
/* Handle pseudo-handles. */
if constexpr (std::is_same<T, KProcess>::value) {
if (handle == ams::svc::PseudoHandle::CurrentProcess) {
return GetCurrentProcessPointer();
}
} else if constexpr (std::is_same<T, KThread>::value) {
if (handle == ams::svc::PseudoHandle::CurrentThread) {
return GetCurrentThreadPointer();
}
}
/* Lock and look up in table. */
KScopedDisableDispatch dd;
KScopedSpinLock lk(this->lock);
KAutoObject *obj = this->GetObjectImpl(handle);
if (obj->DynamicCast<KInterruptEvent *>() != nullptr) {
return nullptr;