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assembler/assembler.h

@@ -35,11 +35,15 @@ extern int labelCount;
 //
 void trim(char *s);
 
+void toUpperCase(char *string);
+
+void toLowerCase(char *string);
+
 // Look up a label by name; returns -1 if not found.
 int lookupLabel(const char *name);
 
 // Add a label to the table
-void addLabel(const char *name, int address);
+int addLabel(const char *name, int address);
 
 //
 // Parse a register string (e.g., "R0", "R1", etc.) and return it's number.