Calling RecoverHandle on the wrong address is bad, so don't, for now. (see #33)

Samples/SystemExtension/SystemExtension.r

@@ -4,6 +4,6 @@ type 'INIT' {
 	RETRO68_CODE_TYPE
 };
 
-resource 'INIT' (128) {
+resource 'INIT' (128, locked) {
 	dontBreakAtEntry, $$read("SystemExtension.flt");
 };

Samples/WDEF/wdef.r

@@ -1,3 +1,3 @@
-data 'WDEF' (129) {
+data 'WDEF' (129, locked) {
     $$read("WDEF")
 };

libretro/relocate.c

@@ -232,6 +232,16 @@ void Retro68Relocate()
 	else
 	{
 		data_displacement = displacement;
+#if 0
+        // find the beginning of the current code resource and lock it.
+        // this crashes with some implementations of the memory manager
+        // if we guess wrong, so let's don't for now.
+        // Therefore, all Retro68-compiled code resources have to be locked,
+        // or they might get relocated as soon as the global variables are
+        // relocated below.
+        // TODO: figure out a way to reliably determine the offset from the
+        //       start of the resource (to pass it from Elf2Mac, probably).
+
 		{
 			uint8_t *orig_rsrc_start;
 			GET_VIRTUAL_ADDRESS(orig_rsrc_start, _rsrc_start);
@@ -245,7 +255,7 @@ void Retro68Relocate()
 				rState->codeHandle = h;  
 			}
 		}
-		
+#endif	
 		// Allocate BSS section (uninitialized/zero-initialized global data)
 		if(!rState->bssPtr)
 		{