Chethan Palakshamurthy <pchethan@xxxxxxxxx> writes: >>> 1. Does the dynamic linker map the physical pages for .data segments >>> such that GOT is at a fixed offset from code in logical address space? >>> is this true? >> >>Yes, it has to do this or it wouldn't be possible to find the GOT. > > So, this method of paging is what makes it possible to share code > pages across processes? Several sources online(/books) mention that > PIC is the one which make code sharing across processes possible. I would not say that it's the method of paging that makes that possible. That is merely a detail in how the GOT is implemented. The GOT makes sharing possible because it separates the final address of the variable from the code. Thus the code can be shared even though the address of the variable will be different in different processes. Ian
