moved xsemaphore to xthread.d

add typed guest pointer template
add X_KSPINLOCK, rework spinlock functions.
rework irql related code, use irql on pcr instead of on XThread
add guest linked list helper functions
renamed ProcessInfoBlock to X_KPROCESS
assigned names to many kernel structure fields

src/xenia/guest_pointers.h

@@ -0,0 +1,51 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2020 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GUEST_POINTERS_H_
+#define XENIA_GUEST_POINTERS_H_
+
+namespace xe {
+template <typename TBase, typename TAdj, size_t offset>
+struct ShiftedPointer {
+  using this_type = ShiftedPointer<TBase, TAdj, offset>;
+  TBase* m_base;
+  inline TBase* operator->() { return m_base; }
+
+  inline TBase& operator*() { return *m_base; }
+  inline this_type& operator=(TBase* base) {
+    m_base = base;
+    return *this;
+  }
+
+  inline this_type& operator=(this_type other) {
+    m_base = other.m_base;
+    return *this;
+  }
+
+  TAdj* GetAdjacent() {
+    return reinterpret_cast<TAdj*>(
+        &reinterpret_cast<uint8_t*>(m_base)[-static_cast<ptrdiff_t>(offset)]);
+  }
+};
+
+template <typename T>
+struct TypedGuestPointer {
+  xe::be<uint32_t> m_ptr;
+  inline TypedGuestPointer<T>& operator=(uint32_t ptr) {
+    m_ptr = ptr;
+    return *this;
+  }
+  inline bool operator==(uint32_t ptr) const { return m_ptr == ptr; }
+  inline bool operator!=(uint32_t ptr) const { return m_ptr != ptr; }
+  // use value directly, no endian swap needed
+  inline bool operator!() const { return !m_ptr.value; }
+};
+}  // namespace xe
+
+#endif  // XENIA_GUEST_POINTERS_H_