OVERLAY SYMBOL TABLE ESTABLISHING AND SEARCHING METHOD AND DEVICE, AND PROGRAM MODULATION SYSTEM

Disclosed are an overlay symbol table establishing and searching method and device, and a program modulation system. The overlay symbol table establishing method comprises: establishing an address relationship table of a VMA and an LMA, the address relationship table comprising a core identity; determining whether mapping is correct, this determination step comprising determining whether core information corresponding to an image of a global code section corresponding to a code section matches the core identity in the address relationship table; and establishing a blockvector block list, the blockvector block list comprising a blockvector core identity. In this application, during program debugging, the corresponding block information and corresponding symtable_and_line information can be searched for according to the core identity, so that after establishing of a blockvector list, correct symbols can be displayed while the block is acquired, thereby avoiding the debugging error caused by debugging the progra