Thank you Ian, You have answered most of my question. What materials are stored in GOT? Any documents describe it in a simple/clear/brief way? :-) regards, George --- Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > Lin George <george4academic@xxxxxxxxx> writes: > > > Do you mean -fpic and -fPIC will make GOT and PLT > > different? If yes, what are the differences? > > I quote the documentation about -fPIC: > > If supported for the target machine, emit > position-independent > code, suitable for dynamic linking and avoiding > any limit on the > size of the global offset table. This option > makes a difference > on the m68k, PowerPC and SPARC. > > The difference is that with -fPIC there is no limit > on the size of the > GOT. The precise details depend on the platform. > > Ian > > > --- Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > > > > > Lin George <george4academic@xxxxxxxxx> writes: > > > > > > > Could you provide a little more information > > > please? I > > > > mean what is the different things generated by > > > -fpic > > > > and -fPIC in a shared library? > > > > > > To make the code position independent and to > permit > > > the executable to > > > override symbols defined in the shared library, > all > > > global variables > > > are accessed via a table of addresses (the > Global > > > Offset Table, or > > > GOT) and all functions are called via a table of > > > branches (the > > > Procedure Linkage Table, or PLT). The dynamic > > > linker initializes the > > > GOT and PLT at runtime. The precise details > depend > > > on the platform. > > > > > > Ian > > > > > > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam > protection around > > http://mail.yahoo.com > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
