On Tue, 27 Nov 2001, Florian Lohoff wrote: > > It's not the same, sorry -- for sections you would need to handle ones > > marked ALLOC in flags. Of these you need to load ones of type PROGBITS > > and zero-fill ones of type NOBITS. Others may be discarded. For Linux > > you may actually skip NOBITS as well, as the head code zero-fills common > > sections itself, but handling them is saner IMO. > > This is mostly what i do - As the ext2 code loads in the whole file > as a chunk i am loading it after the booloader - Then copy it to the > end of the first 8Megs (Which is the minimum memory on a decstation) > and then copy the chunks marked PROGBITS to their final location. That's ugly -- isn't there a possibility to read a file on a block-by-block basis? > > But it's not marked as allocatable, so it does not belong to the run-time > > image. See also the "System V Application Binary Interface, Edition 4.1", > > chapter 4 for sections and 5 for segments. > > ;) I am no elf god by far - I was just in the need of a bootloader so > i looked in the elf headers and collected the bits i thought were > usefull. Neither am I, but come on -- the ELF format is next to trivial to handle and the spec is just a few pages -- the relevant part of chapter 5 fits in three pages. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
