Util: Add header for ARM util functions

src/gba/renderers/video-software.c

@@ -8,6 +8,8 @@
 #include "gba/gba.h"
 #include "gba/io.h"
 
+#include "util/arm-algo.h"
+
 #ifdef NDEBUG
 #define VIDEO_CHECKS false
 #else

src/platform/sdl/sw-sdl.c

@@ -6,11 +6,7 @@
 #include "main.h"
 
 #include "gba/supervisor/thread.h"
-
-#if defined(__ARM_NEON)
-void _neon2x(void* dest, void* src, int width, int height);
-void _neon4x(void* dest, void* src, int width, int height);
-#endif
+#include "util/arm-algo.h"
 
 bool GBASDLInit(struct SDLSoftwareRenderer* renderer) {
 #if !SDL_VERSION_ATLEAST(2, 0, 0)

src/util/arm-algo.h

@@ -0,0 +1,18 @@
+/* Copyright (c) 2013-2015 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef ARM_ALGO_H
+#define ARM_ALGO_H
+
+#ifdef __arm__
+void _to16Bit(uint16_t* dest, uint32_t* src, size_t words);
+
+#if defined(__ARM_NEON)
+void _neon2x(void* dest, void* src, int width, int height);
+void _neon4x(void* dest, void* src, int width, int height);
+#endif
+#endif
+
+#endif