Re: [avr-gcc-list] gcrt1.S and the __mcucr__

[Joerg Wunsch]

Kang Tin LAI <address@hidden> wrote:

> Beside of MCRCR and WDTCR, I don't find any code for zeroing the
> bss, this is another causation makes my code die. Section bss is
> supposed to be zeroed by compiler according to language standard.

Well, .bss is zeroed inside section .init4.  The function
__do_clear_bss is taken from libgcc.a, and it will only be linked into
this section if the compiler found that there's actual data in .bss.

This function clears anything from __bss_start through __bss_end, so
if you override these symbols from the linker command line, you should
be able to clear whatever you want.

-- 
J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/
avr-gcc-list at http://avr1.org