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