Hi Tobias,
a short heads-up on your issue: A closer look at elf_load() revealed
that the return value is EE_MEMORY. There is only one branch is
elf_load() which returns this value and that is if the as_area_create()
call fails.
The culprit is the genode.ld linker script. First, we do not allow to
map the page 0, so you have to shift the starting virtual address of the
output sections by at least one page. The SECTIONS section in the linker
script should therefore start with:
. = 0x1000 + SIZEOF_HEADERS;
Second, the /DISCARD/ phony section should read like this:
/DISCARD/ : {
*(*)
}
Without discarding all symbols which are not explicitly included into
any other input sections the linker gets confused and it creates both
the "ro" and "rw" program headers with the same starting virtual address
(in other words they overlap and the elf_load() fails because it tries
to map two address space areas starting from the same virtual address).
I am always puzzled whether some strange behaviour of the GNU Linker is
a bug or a feature :-). I have already encountered a few of those ..
With these two modifications to the genode.ld your test applications
finally load fine.
M.D.
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