kernelbase: Implement DebugBreak() for ARM64EC.

dlls/kernelbase/debug.c

@@ -120,13 +120,14 @@ BOOL WINAPI DECLSPEC_HOTPATCH DebugActiveProcessStop( DWORD pid )
  */
 #ifdef __i386__
 __ASM_STDCALL_FUNC( DebugBreak, 0, "jmp " __ASM_STDCALL("DbgBreakPoint", 0) )
+#elif defined(__aarch64__)
+__ASM_GLOBAL_FUNC( DebugBreak, "brk #0xf000; ret" )
+#elif defined(__arm64ec__)
+void __attribute__((naked)) WINAPI DebugBreak(void) { asm( "brk #0xf000; ret" ); }
 #elif defined(__x86_64__)
 __ASM_GLOBAL_FUNC( DebugBreak, "jmp " __ASM_NAME("DbgBreakPoint") )
-#else
-void WINAPI DebugBreak(void)
-{
-    DbgBreakPoint();
-}
+#elif defined(__arm__)
+__ASM_GLOBAL_FUNC( DebugBreak, "udf #0xfe; bx lr" )
 #endif