+/*-----------------------------------------------------------------*/
+/* canOverlayLocals - returns true if the local variables can overlayed */
+/*-----------------------------------------------------------------*/
+static bool canOverlayLocals (eBBlock **ebbs, int count)
+{
+ int i;
+ /* if staticAuto is in effect or the current function
+ being compiled is reentrant or the overlay segment
+ is empty or no overlay option is in effect then */
+ if (options.noOverlay ||
+ options.stackAuto ||
+ (currFunc &&
+ (IS_RENT(currFunc->etype) ||
+ IS_ISR(currFunc->etype))) ||
+ elementsInSet(overlay->syms) == 0)
+
+ return FALSE;
+
+ /* otherwise do thru the blocks and see if there
+ any function calls if found then return false */
+ for (i = 0; i < count ; i++ ) {
+ iCode *ic;
+
+ for (ic = ebbs[i]->sch; ic ; ic = ic->next)
+ if (ic && ( ic->op == CALL || ic->op == PCALL))
+ return FALSE;
+ }
+
+ /* no function calls found return TRUE */
+ return TRUE;
+}
+
+/*-----------------------------------------------------------------*/
+/* doOverlays - move the overlay segment to appropriate location */
+/*-----------------------------------------------------------------*/
+void doOverlays( eBBlock **ebbs, int count)
+{
+ /* check if the parameters and local variables
+ of this function can be put in the overlay segment
+ This check is essentially to see if the function
+ calls any other functions if yes then we cannot
+ overlay */
+ if (canOverlayLocals(ebbs,count))
+ /* if we can then put the parameters &
+ local variables in the overlay set */
+ overlay2Set();
+ else
+ /* otherwise put them into data where
+ they belong */
+ overlay2data();
+}
+