Customizing C startup code for powerpc-eabi embedded system

[Jeffi Edward.J]

Hi,

I have customized C startup code for my powerpc-eabi embedded system. The
execution starts from _start and I have added code to initialize all
hardware, copying .data from LMA to VMA, clearing .bss sectiuon, etc. When I
branch to main() function, the application crashes. The control doesn't even
reach first statement in main.

When I searched in google, I found that main intermally calls __eabi() which
in turn calls __init(). What sort of initialization is done inside __init()
function? When I stepped into main() through debugger, the crash occurs when
brctl instruction is executed. I couldn't understand the cause of the
problem. Should I customize __init() called from __eabi() for my
application? Please suggest.

Thanks and regards,
Jeffi

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