diff --git a/src/xenia/base/mutex.h b/src/xenia/base/mutex.h
index 61d7eca74..2b72b97f1 100644
--- a/src/xenia/base/mutex.h
+++ b/src/xenia/base/mutex.h
@@ -10,82 +10,16 @@
 #ifndef XENIA_BASE_MUTEX_H_
 #define XENIA_BASE_MUTEX_H_
 
-#include <atomic>
 #include <mutex>
-#include <type_traits>
-
-#include "xenia/base/platform_win.h"
 
 namespace xe {
 
-// This type should be interchangable with std::mutex, only it provides the
-// ability to resume threads that hold the lock when the debugger needs it.
-class mutex {
- public:
-  mutex(int _Flags = 0) noexcept {
-    _Mtx_init_in_situ(_Mymtx(), _Flags | _Mtx_try);
-  }
+// This exists to allow us to swap the mutex implementation with one that
+// we can mess with in the debugger (such as allowing the debugger to ignore
+// locks while all threads are suspended). std::mutex should not be used.
 
-  ~mutex() noexcept { _Mtx_destroy_in_situ(_Mymtx()); }
-
-  mutex(const mutex&) = delete;
-  mutex& operator=(const mutex&) = delete;
-
-  void lock() {
-    _Mtx_lock(_Mymtx());
-    holding_thread_ = ::GetCurrentThread();
-  }
-
-  bool try_lock() {
-    if (_Mtx_trylock(_Mymtx()) == _Thrd_success) {
-      holding_thread_ = ::GetCurrentThread();
-      return true;
-    }
-    return false;
-  }
-
-  void lock_as_debugger() {
-    if (_Mtx_trylock(_Mymtx()) == _Thrd_success) {
-      // Nothing holding it.
-      return;
-    }
-    // Resume the thread holding it, which will unlock and suspend itself.
-    debugger_waiting_ = true;
-    ResumeThread(holding_thread_);
-    lock();
-    debugger_waiting_ = false;
-  }
-
-  void unlock() {
-    bool debugger_waiting = debugger_waiting_;
-    _Mtx_unlock(_Mymtx());
-    if (debugger_waiting) {
-      SuspendThread(nullptr);
-    }
-  }
-
-  typedef void* native_handle_type;
-
-  native_handle_type native_handle() { return (_Mtx_getconcrtcs(_Mymtx())); }
-
- private:
-  std::aligned_storage<_Mtx_internal_imp_size,
-                       _Mtx_internal_imp_alignment>::type _Mtx_storage;
-  HANDLE holding_thread_ = nullptr;
-  bool debugger_waiting_ = false;
-
-  _Mtx_t _Mymtx() noexcept { return (reinterpret_cast<_Mtx_t>(&_Mtx_storage)); }
-};
-
-class recursive_mutex : public mutex {
- public:
-  recursive_mutex() : mutex(_Mtx_recursive) {}
-
-  bool try_lock() noexcept { return mutex::try_lock(); }
-
-  recursive_mutex(const recursive_mutex&) = delete;
-  recursive_mutex& operator=(const recursive_mutex&) = delete;
-};
+using mutex = std::mutex;
+using recursive_mutex = std::recursive_mutex;
 
 }  // namespace xe
 
diff --git a/src/xenia/cpu/hir/hir_builder.cc b/src/xenia/cpu/hir/hir_builder.cc
index 000a5ce10..1a3c21168 100644
--- a/src/xenia/cpu/hir/hir_builder.cc
+++ b/src/xenia/cpu/hir/hir_builder.cc
@@ -9,6 +9,7 @@
 
 #include "xenia/cpu/hir/hir_builder.h"
 
+#include <cstdarg>
 #include <cstring>
 
 #include "xenia/base/assert.h"
diff --git a/src/xenia/cpu/mmio_handler.cc b/src/xenia/cpu/mmio_handler.cc
index 95f5a2e54..1f38be10b 100644
--- a/src/xenia/cpu/mmio_handler.cc
+++ b/src/xenia/cpu/mmio_handler.cc
@@ -13,6 +13,7 @@
 #include "xenia/base/byte_order.h"
 #include "xenia/base/math.h"
 #include "xenia/base/memory.h"
+#include "xenia/base/platform_win.h"
 
 namespace BE {
 #include <beaengine/BeaEngine.h>
diff --git a/src/xenia/cpu/mmio_handler_win.cc b/src/xenia/cpu/mmio_handler_win.cc
index cff291977..ebe8f81fe 100644
--- a/src/xenia/cpu/mmio_handler_win.cc
+++ b/src/xenia/cpu/mmio_handler_win.cc
@@ -9,7 +9,7 @@
 
 #include "xenia/cpu/mmio_handler.h"
 
-#include "xenia/base/platform.h"
+#include "xenia/base/platform_win.h"
 #include "xenia/profiling.h"
 
 namespace xe {
diff --git a/src/xenia/kernel/objects/xnotify_listener.cc b/src/xenia/kernel/objects/xnotify_listener.cc
index 70e8367c9..7700d6793 100644
--- a/src/xenia/kernel/objects/xnotify_listener.cc
+++ b/src/xenia/kernel/objects/xnotify_listener.cc
@@ -9,6 +9,7 @@
 
 #include "xenia/kernel/objects/xnotify_listener.h"
 
+#include "xenia/base/platform_win.h"
 #include "xenia/kernel/kernel_state.h"
 
 namespace xe {
diff --git a/src/xenia/kernel/objects/xnotify_listener.h b/src/xenia/kernel/objects/xnotify_listener.h
index 53372b42f..1f18e0048 100644
--- a/src/xenia/kernel/objects/xnotify_listener.h
+++ b/src/xenia/kernel/objects/xnotify_listener.h
@@ -17,6 +17,8 @@
 #include "xenia/kernel/xobject.h"
 #include "xenia/xbox.h"
 
+typedef void* HANDLE;
+
 namespace xe {
 namespace kernel {
 
diff --git a/src/xenia/ui/loop_win.h b/src/xenia/ui/loop_win.h
index c9732378f..236aaa13a 100644
--- a/src/xenia/ui/loop_win.h
+++ b/src/xenia/ui/loop_win.h
@@ -15,7 +15,7 @@
 #include <thread>
 
 #include "xenia/base/mutex.h"
-#include "xenia/base/platform.h"
+#include "xenia/base/platform_win.h"
 #include "xenia/base/threading.h"
 #include "xenia/ui/loop.h"
 
diff --git a/src/xenia/vfs/devices/host_path_entry.cc b/src/xenia/vfs/devices/host_path_entry.cc
index ec013c40c..1d238187f 100644
--- a/src/xenia/vfs/devices/host_path_entry.cc
+++ b/src/xenia/vfs/devices/host_path_entry.cc
@@ -12,6 +12,7 @@
 #include "xenia/base/logging.h"
 #include "xenia/base/mapped_memory.h"
 #include "xenia/base/math.h"
+#include "xenia/base/platform_win.h"
 #include "xenia/base/string.h"
 #include "xenia/vfs/devices/host_path_file.h"
 
diff --git a/src/xenia/vfs/devices/host_path_file.cc b/src/xenia/vfs/devices/host_path_file.cc
index 07fa83f7e..9eef179da 100644
--- a/src/xenia/vfs/devices/host_path_file.cc
+++ b/src/xenia/vfs/devices/host_path_file.cc
@@ -9,6 +9,7 @@
 
 #include "xenia/vfs/devices/host_path_file.h"
 
+#include "xenia/base/platform_win.h"
 #include "xenia/vfs/devices/host_path_entry.h"
 
 namespace xe {
diff --git a/src/xenia/vfs/devices/host_path_file.h b/src/xenia/vfs/devices/host_path_file.h
index e26eddb21..5b3374d1c 100644
--- a/src/xenia/vfs/devices/host_path_file.h
+++ b/src/xenia/vfs/devices/host_path_file.h
@@ -14,6 +14,8 @@
 
 #include "xenia/kernel/objects/xfile.h"
 
+typedef void* HANDLE;
+
 namespace xe {
 namespace vfs {