Returning pointers from relocated code should work (even if it's not a great idea).

examples/overlay/overlay.c

@@ -29,7 +29,12 @@
  Breaking things { with comments!
  */
 
-void test(int arg1, int arg2) {
+const char *test(int arg1, int arg2) {
+    return "Pointers from a swapped bank is probably a bad idea.";
+}
+
+int test2(int arg1, int arg2) {
+    return 1;
 }
 
 

tools/overlay/src/overlay.c

@@ -171,13 +171,22 @@ void parseCFile(char *filename, char *targetFile, FILE *trampoline, char *trampo
 						// Now go backwards and look for a space.
 						start = b;
 						while (*start != ' ') start--;
-						*start++ = 0;
+						// Are they returning a pointer?
+						found = false;
+						if (*(start+1) == '*') {
+							found = true;
+							++start;
+							*start++ = 0;
+						} else {
+							*start++ = 0;
+							found = false;
+						}
 						// Yank the function name out.
 						*b = 0;
 						temp = strdup(start);
 						*b = '(';
 						// Write out new function definition.
-						fprintf(out, "%s FAR%d_%s {\n", buffer, 8, start);
+						fprintf(out, "%s%sFAR%d_%s {\n", buffer, found ? "*" : " ", 8, start);
 						// Create trampoline macro.
 						fprintf(trampoline, "#define %s(...)  ({  \\\n"
 											"\t\tunsigned char ___mmu = (unsigned char)*(volatile unsigned char *)%#06x;  \\\n"