Carlos E. R. wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
Content-ID: <alpine.LNX.2.00.1307232026060.5519@minas-tirith.valinor>
El 2013-07-23 a las 12:08 -0400, Cristian Rodríguez escribió:
It uses 64 bit pointers which require twice as much space, so yeah it is likely that some programs will use a lot more ram.
I forgot pointers.
Doesn't code use short or relative pointers?
No, not compiler generated code.
There is something called "x32 abi" , which is an x86_64 implementation with 32 bit pointers, so far, no distribution has been released officially using this ABI model.
I don't know in Linux, but in MsDos you could choose the model of your code,
Linux uses the flat memory model: http://en.wikipedia.org/wiki/Flat_memory_model
and there were several possibilities of code size, data size, etc. Pointers could be absolute or relative. The segment register could be fixed and play with normal registers only (in theory the
DOS ran in real mode, Linux runs in protected mode. In protected mode, you have access to the full 32bit address space, and the segment registers are more or less disabled, except FS and GS. -- Per Jessen, Zürich (24.2°C) http://www.dns24.ch/ - free DNS hosting, made in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org