METHOD FOR UTILIZING LEGACY SHARED LIBRARIES ON VM-LESS EMBEDDED SYSTEMS

摘要

A method for using the existing shared library in an embedded system not having a virtual memory is provided to operate the existing shared library correctly by modifying the value of a GOT item when the context is changed between application program processes. A method for using the existing shared library in an embedded system not having a virtual memory comprises the following steps of: assigning one memory area for a shared library GOT(Global Offset Table)(S10); arranging the GOT of the shared library to a fixed location from an area in which a shared library code is loaded, so that each process using the shared library can share the memory area(S20); and modifying the global variable of the shared library GOT when the context switching is performed between processes, so that the global variable of the shared library GOT can have a valid physical memory address always(S30).