In article <[EMAIL PROTECTED]> you write: > >I need to look into it a bit more, and figure out exactly what FreeBSD does >and doesn't do with this.
Everything you need to know is in /usr/src/sys/kern/imgact_elf.c: /* We support three types of branding -- (1) the ELF EI_OSABI field * that SCO added to the ELF spec, (2) FreeBSD 3.x's traditional string * branding w/in the ELF header, and (3) path of the `interp_path' * field. We should also look for an ".note.ABI-tag" ELF section now * in all Linux ELF binaries, FreeBSD 4.1+, and some NetBSD ones. */ There's a table of the supported ABIs which is scanned when executing an ELF binary. On the first scan an ABI is found if either the OSABI field matches (number 1 above) or if the second eight bytes of the ELF header match (which used to be "FreeBSD" instead of nulls as is usual) (number 2 above). On the second scan an ABI is found if the file's .interp section matches (number 3 above). Tony.