diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 61fea294dd..2e6bb59f50 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -545,7 +545,7 @@ set( PLAT_WIN32_SOURCES
 	win32/i_system.cpp
 	win32/st_start.cpp
 	win32/win32video.cpp )
-set( PLAT_SDL_SYSTEM_SOURCES
+set( PLAT_SDL_SOURCES
 	sdl/crashcatcher.c
 	sdl/hardware.cpp
 	sdl/i_cd.cpp
@@ -553,8 +553,7 @@ set( PLAT_SDL_SYSTEM_SOURCES
 	sdl/i_movie.cpp
 	sdl/i_system.cpp
 	sdl/sdlvideo.cpp
-	sdl/st_start.cpp )
-set( PLAT_SDL_SPECIAL_SOURCES
+	sdl/st_start.cpp
 	sdl/i_gui.cpp
 	sdl/i_input.cpp
 	sdl/i_joystick.cpp
@@ -563,39 +562,27 @@ set( PLAT_MAC_SOURCES
 	cocoa/iwadpicker_cocoa.mm
 	cocoa/i_system_cocoa.mm )
 set( PLAT_COCOA_SOURCES
-	cocoa/HID_Config_Utilities.c
-	cocoa/HID_Error_Handler.c
-	cocoa/HID_Name_Lookup.c
-	cocoa/HID_Queue_Utilities.c
-	cocoa/HID_Utilities.c
-	cocoa/IOHIDDevice_.c
-	cocoa/IOHIDElement_.c
-	cocoa/ImmrHIDUtilAddOn.c
+	cocoa/hid/HID_Config_Utilities.c
+	cocoa/hid/HID_Error_Handler.c
+	cocoa/hid/HID_Name_Lookup.c
+	cocoa/hid/HID_Queue_Utilities.c
+	cocoa/hid/HID_Utilities.c
+	cocoa/hid/IOHIDDevice_.c
+	cocoa/hid/IOHIDElement_.c
+	cocoa/hid/ImmrHIDUtilAddOn.c
+	cocoa/critsec.cpp
 	cocoa/i_backend_cocoa.mm
+	cocoa/i_cd.cpp
 	cocoa/i_joystick.cpp
+	cocoa/i_movie.cpp
+	cocoa/st_start.cpp
 	cocoa/i_timer.cpp
 	cocoa/zdoom.icns )
 
-if( APPLE )
-	set( PLAT_SDL_SOURCES ${PLAT_SDL_SYSTEM_SOURCES} "${FMOD_LIBRARY}" )
-
-	if( OSX_COCOA_BACKEND )
-		set( PLAT_MAC_SOURCES ${PLAT_MAC_SOURCES} ${PLAT_COCOA_SOURCES} )
-		add_definitions( -DUSE_NATIVE_COCOA )
-	else( OSX_COCOA_BACKEND )
-		set( PLAT_MAC_SOURCES ${PLAT_MAC_SOURCES} ${PLAT_SDL_SPECIAL_SOURCES} )
-	endif( OSX_COCOA_BACKEND )
-
-	set_source_files_properties( cocoa/zdoom.icns PROPERTIES MACOSX_PACKAGE_LOCATION Resources )
-	set_source_files_properties( "${FMOD_LIBRARY}" PROPERTIES MACOSX_PACKAGE_LOCATION Frameworks )
-else( APPLE )
-	set( PLAT_SDL_SOURCES ${PLAT_SDL_SYSTEM_SOURCES} ${PLAT_SDL_SPECIAL_SOURCES} )
-endif( APPLE )
-
 if( WIN32 )
 	set( SYSTEM_SOURCES_DIR win32 )
 	set( SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} )
-	set( OTHER_SYSTEM_SOURCES ${PLAT_SDL_SOURCES} ${PLAT_MAC_SOURCES} )
+	set( OTHER_SYSTEM_SOURCES ${PLAT_SDL_SOURCES} ${PLAT_MAC_SOURCES} ${PLAT_COCOA_SOURCES} )
 	
 	if( ZD_CMAKE_COMPILER_IS_GNUCXX_COMPATIBLE )
 		# CMake is not set up to compile and link rc files with GCC. :(
@@ -606,15 +593,25 @@ if( WIN32 )
 	else( ZD_CMAKE_COMPILER_IS_GNUCXX_COMPATIBLE )
 		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} win32/zdoom.rc )
 	endif( ZD_CMAKE_COMPILER_IS_GNUCXX_COMPATIBLE )
+elseif( APPLE )
+	if( OSX_COCOA_BACKEND )
+		set( SYSTEM_SOURCES_DIR cocoa )
+		set( SYSTEM_SOURCES ${PLAT_COCOA_SOURCES} )
+		set( OTHER_SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} ${PLAT_SDL_SOURCES} )
+	else( OSX_COCOA_BACKEND )
+		set( SYSTEM_SOURCES_DIR sdl )
+		set( SYSTEM_SOURCES ${PLAT_SDL_SOURCES} )
+		set( OTHER_SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} ${PLAT_COCOA_SOURCES} )
+	endif( OSX_COCOA_BACKEND )
+
+	set( SYSTEM_SOURCES ${SYSTEM_SOURCES} ${PLAT_MAC_SOURCES} "${FMOD_LIBRARY}" )
+
+	set_source_files_properties( cocoa/zdoom.icns PROPERTIES MACOSX_PACKAGE_LOCATION Resources )
+	set_source_files_properties( "${FMOD_LIBRARY}" PROPERTIES MACOSX_PACKAGE_LOCATION Frameworks )
 else( WIN32 )
 	set( SYSTEM_SOURCES_DIR sdl )
 	set( SYSTEM_SOURCES ${PLAT_SDL_SOURCES} )
-	if( APPLE )
-		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} ${PLAT_MAC_SOURCES} )
-		set( OTHER_SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} )
-	else( APPLE )
-		set( OTHER_SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} ${PLAT_MAC_SOURCES} )
-	endif( APPLE )
+	set( OTHER_SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} ${PLAT_MAC_SOURCES} ${PLAT_COCOA_SOURCES} )
 endif( WIN32 )
 
 if( NOT ASM_SOURCES )
@@ -672,11 +669,18 @@ endif( DYN_FLUIDSYNTH )
 # there's generally a new cpp for every header so this file will get changed
 if( WIN32 )
 	set( EXTRA_HEADER_DIRS win32/*.h )
+elseif( APPLE )
+	if( OSX_COCOA_BACKEND )
+		set( EXTRA_HEADER_DIRS cocoa/*.h )
+	else( OSX_COCOA_BACKEND )
+		set( EXTRA_HEADER_DIRS sdl/*.h )
+	endif( OSX_COCOA_BACKEND )
 else( WIN32 )
 	set( EXTRA_HEADER_DIRS sdl/*.h )
 endif( WIN32 )
 file( GLOB HEADER_FILES
 	${EXTRA_HEADER_DIRS}
+	cocoa/*.h
 	fragglescript/*.h
 	g_doom/*.h
 	g_heretic/*.h
diff --git a/src/cocoa/critsec.cpp b/src/cocoa/critsec.cpp
new file mode 100644
index 0000000000..97bc2251c2
--- /dev/null
+++ b/src/cocoa/critsec.cpp
@@ -0,0 +1,62 @@
+/*
+ ** critsec.cpp
+ **
+ **---------------------------------------------------------------------------
+ ** Copyright 2014 Alexey Lysiuk
+ ** All rights reserved.
+ **
+ ** Redistribution and use in source and binary forms, with or without
+ ** modification, are permitted provided that the following conditions
+ ** are met:
+ **
+ ** 1. Redistributions of source code must retain the above copyright
+ **    notice, this list of conditions and the following disclaimer.
+ ** 2. Redistributions in binary form must reproduce the above copyright
+ **    notice, this list of conditions and the following disclaimer in the
+ **    documentation and/or other materials provided with the distribution.
+ ** 3. The name of the author may not be used to endorse or promote products
+ **    derived from this software without specific prior written permission.
+ **
+ ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ **---------------------------------------------------------------------------
+ **
+ */
+
+#include "critsec.h"
+
+// TODO: add error handling
+
+FCriticalSection::FCriticalSection()
+{
+	pthread_mutexattr_t attributes;
+	pthread_mutexattr_init(&attributes);
+	pthread_mutexattr_settype(&attributes, PTHREAD_MUTEX_RECURSIVE);
+
+	pthread_mutex_init(&m_mutex, &attributes);
+
+	pthread_mutexattr_destroy(&attributes);
+}
+
+FCriticalSection::~FCriticalSection()
+{
+	pthread_mutex_destroy(&m_mutex);
+}
+
+void FCriticalSection::Enter()
+{
+	pthread_mutex_lock(&m_mutex);
+}
+
+void FCriticalSection::Leave()
+{
+	pthread_mutex_unlock(&m_mutex);
+}
diff --git a/src/cocoa/critsec.h b/src/cocoa/critsec.h
new file mode 100644
index 0000000000..20c476ae3e
--- /dev/null
+++ b/src/cocoa/critsec.h
@@ -0,0 +1,53 @@
+/*
+ ** critsec.h
+ **
+ **---------------------------------------------------------------------------
+ ** Copyright 2014 Alexey Lysiuk
+ ** All rights reserved.
+ **
+ ** Redistribution and use in source and binary forms, with or without
+ ** modification, are permitted provided that the following conditions
+ ** are met:
+ **
+ ** 1. Redistributions of source code must retain the above copyright
+ **    notice, this list of conditions and the following disclaimer.
+ ** 2. Redistributions in binary form must reproduce the above copyright
+ **    notice, this list of conditions and the following disclaimer in the
+ **    documentation and/or other materials provided with the distribution.
+ ** 3. The name of the author may not be used to endorse or promote products
+ **    derived from this software without specific prior written permission.
+ **
+ ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ **---------------------------------------------------------------------------
+ **
+ */
+
+#ifndef CRITSEC_H
+#define CRITSEC_H
+
+#include <pthread.h>
+
+class FCriticalSection
+{
+public:
+	FCriticalSection();
+	~FCriticalSection();
+
+	void Enter();
+	void Leave();
+
+private:
+	pthread_mutex_t m_mutex;
+
+};
+
+#endif
diff --git a/src/cocoa/dikeys.h b/src/cocoa/dikeys.h
new file mode 120000
index 0000000000..011f85acb9
--- /dev/null
+++ b/src/cocoa/dikeys.h
@@ -0,0 +1 @@
+../sdl/dikeys.h
\ No newline at end of file
diff --git a/src/cocoa/hardware.h b/src/cocoa/hardware.h
new file mode 120000
index 0000000000..4261b94778
--- /dev/null
+++ b/src/cocoa/hardware.h
@@ -0,0 +1 @@
+../sdl/hardware.h
\ No newline at end of file
diff --git a/src/cocoa/HID_Config_Utilities.c b/src/cocoa/hid/HID_Config_Utilities.c
similarity index 100%
rename from src/cocoa/HID_Config_Utilities.c
rename to src/cocoa/hid/HID_Config_Utilities.c
diff --git a/src/cocoa/HID_Error_Handler.c b/src/cocoa/hid/HID_Error_Handler.c
similarity index 100%
rename from src/cocoa/HID_Error_Handler.c
rename to src/cocoa/hid/HID_Error_Handler.c
diff --git a/src/cocoa/HID_Name_Lookup.c b/src/cocoa/hid/HID_Name_Lookup.c
similarity index 100%
rename from src/cocoa/HID_Name_Lookup.c
rename to src/cocoa/hid/HID_Name_Lookup.c
diff --git a/src/cocoa/HID_Queue_Utilities.c b/src/cocoa/hid/HID_Queue_Utilities.c
similarity index 100%
rename from src/cocoa/HID_Queue_Utilities.c
rename to src/cocoa/hid/HID_Queue_Utilities.c
diff --git a/src/cocoa/HID_Utilities.c b/src/cocoa/hid/HID_Utilities.c
similarity index 100%
rename from src/cocoa/HID_Utilities.c
rename to src/cocoa/hid/HID_Utilities.c
diff --git a/src/cocoa/HID_Utilities_External.h b/src/cocoa/hid/HID_Utilities_External.h
similarity index 100%
rename from src/cocoa/HID_Utilities_External.h
rename to src/cocoa/hid/HID_Utilities_External.h
diff --git a/src/cocoa/IOHIDDevice_.c b/src/cocoa/hid/IOHIDDevice_.c
similarity index 100%
rename from src/cocoa/IOHIDDevice_.c
rename to src/cocoa/hid/IOHIDDevice_.c
diff --git a/src/cocoa/IOHIDDevice_.h b/src/cocoa/hid/IOHIDDevice_.h
similarity index 100%
rename from src/cocoa/IOHIDDevice_.h
rename to src/cocoa/hid/IOHIDDevice_.h
diff --git a/src/cocoa/IOHIDElement_.c b/src/cocoa/hid/IOHIDElement_.c
similarity index 100%
rename from src/cocoa/IOHIDElement_.c
rename to src/cocoa/hid/IOHIDElement_.c
diff --git a/src/cocoa/IOHIDElement_.h b/src/cocoa/hid/IOHIDElement_.h
similarity index 100%
rename from src/cocoa/IOHIDElement_.h
rename to src/cocoa/hid/IOHIDElement_.h
diff --git a/src/cocoa/IOHIDLib_.h b/src/cocoa/hid/IOHIDLib_.h
similarity index 100%
rename from src/cocoa/IOHIDLib_.h
rename to src/cocoa/hid/IOHIDLib_.h
diff --git a/src/cocoa/ImmrHIDUtilAddOn.c b/src/cocoa/hid/ImmrHIDUtilAddOn.c
similarity index 100%
rename from src/cocoa/ImmrHIDUtilAddOn.c
rename to src/cocoa/hid/ImmrHIDUtilAddOn.c
diff --git a/src/cocoa/ImmrHIDUtilAddOn.h b/src/cocoa/hid/ImmrHIDUtilAddOn.h
similarity index 100%
rename from src/cocoa/ImmrHIDUtilAddOn.h
rename to src/cocoa/hid/ImmrHIDUtilAddOn.h
diff --git a/src/cocoa/i_backend_cocoa.mm b/src/cocoa/i_backend_cocoa.mm
index 6abf1b7d1f..be2d142764 100644
--- a/src/cocoa/i_backend_cocoa.mm
+++ b/src/cocoa/i_backend_cocoa.mm
@@ -1625,48 +1625,6 @@ const char* I_GetBackEndName()
 extern "C" 
 {
 
-struct SDL_mutex
-{
-	pthread_mutex_t mutex;
-};
-
-
-SDL_mutex* SDL_CreateMutex()
-{
-	pthread_mutexattr_t attributes;
-	pthread_mutexattr_init(&attributes);
-	pthread_mutexattr_settype(&attributes, PTHREAD_MUTEX_RECURSIVE);
-	
-	SDL_mutex* result = new SDL_mutex;
-	
-	if (0 != pthread_mutex_init(&result->mutex, &attributes))
-	{
-		delete result;
-		result = NULL;
-	}
-	
-	pthread_mutexattr_destroy(&attributes);
-	
-	return result;
-}
-
-int SDL_mutexP(SDL_mutex* mutex)
-{
-	return pthread_mutex_lock(&mutex->mutex);
-}
-
-int SDL_mutexV(SDL_mutex* mutex)
-{
-	return pthread_mutex_unlock(&mutex->mutex);
-}
-
-void SDL_DestroyMutex(SDL_mutex* mutex)
-{
-	pthread_mutex_destroy(&mutex->mutex);
-	delete mutex;
-}
-
-
 static timeval s_startTicks;
 
 uint32_t SDL_GetTicks()
diff --git a/src/cocoa/i_cd.cpp b/src/cocoa/i_cd.cpp
new file mode 120000
index 0000000000..5573d7e1e4
--- /dev/null
+++ b/src/cocoa/i_cd.cpp
@@ -0,0 +1 @@
+../sdl/i_cd.cpp
\ No newline at end of file
diff --git a/src/cocoa/i_input.h b/src/cocoa/i_input.h
new file mode 120000
index 0000000000..208b03106f
--- /dev/null
+++ b/src/cocoa/i_input.h
@@ -0,0 +1 @@
+../sdl/i_input.h
\ No newline at end of file
diff --git a/src/cocoa/i_joystick.cpp b/src/cocoa/i_joystick.cpp
index 56db8f815d..234f94c8ee 100644
--- a/src/cocoa/i_joystick.cpp
+++ b/src/cocoa/i_joystick.cpp
@@ -37,7 +37,7 @@
 
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1050
 
-#include "HID_Utilities_External.h"
+#include "hid/HID_Utilities_External.h"
 
 #include "d_event.h"
 #include "doomdef.h"
diff --git a/src/cocoa/i_movie.cpp b/src/cocoa/i_movie.cpp
new file mode 120000
index 0000000000..04258f3e56
--- /dev/null
+++ b/src/cocoa/i_movie.cpp
@@ -0,0 +1 @@
+../sdl/i_movie.cpp
\ No newline at end of file
diff --git a/src/cocoa/i_system.h b/src/cocoa/i_system.h
new file mode 120000
index 0000000000..ced5163114
--- /dev/null
+++ b/src/cocoa/i_system.h
@@ -0,0 +1 @@
+../sdl/i_system.h
\ No newline at end of file
diff --git a/src/cocoa/st_start.cpp b/src/cocoa/st_start.cpp
new file mode 120000
index 0000000000..38ce4fa1c7
--- /dev/null
+++ b/src/cocoa/st_start.cpp
@@ -0,0 +1 @@
+../sdl/st_start.cpp
\ No newline at end of file