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Re: Forgetting return values


Jamie Prescott wrote:
>> From: Adam Nemet <anemet@caviumnetworks.com>

>>> Why is the memory clobber required, and why GCC does not understand to
>>> sync the value to memory when passing the address to a function?
>> Because you never inform GCC that you will use the value at
>> address *NAME.  Try to use "m"(*name) rather than "a1"(name) in the asm.
> 
> That's 'data', not 'name'. But OK, got it. unfortunately, I cannot use "m" since
> that value need to go into a specific register.

This is not appropriate for gcc@, which is for gcc development.

> Any other solution?

Clobber memory, as you discovered.

Andrew.


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