On Apr 27, 2006, at 7:05 PM, Qiuker wrote:
Is there much difference from different PIC implement?
They all do exactly the same thing, allow code to be run at different addresses, so they are all identical, or, yeah, they can be totally different from just doing normal codegen and saving the relocs and fixing the code up at runtime, possibly caching the result of the relocation to disk to saving even that cost, or allocating pic related registers, or not allocating such registers, or having those registers always setup in the prologue to having the prologue not set up the registers, to having GOTs and PLTs to having stubs and lazy pointers.
Is it machine related ?
Not usually. More OS related I'd say. Darwin is one flavor, ELF another, SunOS another, AT&T another, HPUX another, AIX another and so on... All the same, yet all different.
