Rick Mann writes: > Hi. I've seen a lot of GOT-related questions, and there are .got > sections...what's GOT? It's kinda hard to search for in Google. A global offset table provides information for address calculation. Position-independent object files (executable and shared object files) have this table in their data segment. When the system creates the memory image for an object file, the table entries are relocated to reflect the absolute virtual addresses as assigned for an individual process. Because data segments are private for each process, the table entries can change?unlike text segments, which multiple processes share. Assembly language examples below show the explicit notation needed for position-independent code. name@ GOT ( %ebx ) This expression denotes an% e b x-relative reference to the global offset table entry for the symbol name. The% e b x register contains the absolute address of the global offset table, as explained below. name@ GOTOFF ( %ebx ) This expression denotes an% e b x-relative reference to the symbol name. Again,% e b x holds the global offset table address. Note this expression references name, not the global offset table entry for name. System V Application Binary Interface - Intel386? Architecture Processor Supplement, Fourth Edition http://www.caldera.com/developers/devspecs/abi386-4.pdf
