gcc on an OS less system

["Viswanathan Sankararam" <vishu27 at cox dot net>]

Hi,
    I have an installation of the gnupro tools for xscale. I am trying to
run C++ programs on a system which has no OS. From what I understand, I have
to write a linker script that corresponds to my system and also rewirte the
crt0.S from newlib to do the initialization for my system. I also understand
that I need to provide some OS stubs so that the libc.a functions do not
call the already build in system calls.
    The question is how will I override the system calls that come with
libc.a with my implementation of the syscalls. Do I just remove syscalls.o
from the archive and add mine. Would that work?

Also is there any thing else that I would need to do the get the C++
programs to work on this bare system.

One more thing. What is the difference between newlib and libgloss. Does
newlib use libgloss or are they two separate C library implementations and I
dont have to deal with libgloss if I am going to use newlib.

I would really appreciate your help.

Thanks
Vish


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