Use the portable intrinsic

include/SDL_assert.h

@@ -50,8 +50,9 @@ on the assertion line and not in some random guts of SDL, and so each
 assert can have unique static variables associated with it.
 */
 
-#if (defined(_MSC_VER) && ((_M_IX86) || (_M_X64)))
-    #define SDL_TriggerBreakpoint() __asm { int 3 }
+#if defined(_MSC_VER)
+#include <intrin.h>
+    #define SDL_TriggerBreakpoint() __debugbreak()
 #elif (defined(__GNUC__) && ((__i386__) || (__x86_64__)))
     #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "int $3\n\t" )
 #elif defined(HAVE_SIGNAL_H)