Relocation Procedure
Relocation is typically done in two steps:
- Each object file has various sections like code, data, .bss etc. To combine all the objects to a single executable, the linker merges all sections of similar type into a single section of that type. The linker then assigns run time addresses to each section and each symbol. At this point, the code (functions) and data (global variables) will have unique run time addresses.
- Each section refers to one or more symbols which should be modified so that they point to the correct run time addresses based on information stored in a relocation table in the object file.
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