On Tue, Sep 13, 2005 at 11:28:07AM +0200, Segher Boessenkool wrote: > Especially as the ABI states that the write of the backlink > and the stack pointer update _have_ to be done in one insn.
That's on allocation. Deallocation isn't so critical. You just need to ensure the backchain is written before updating sp. Hmm, on powerpc64-linux you could even alloc up to 288 bytes without an atomic update, since 288 bytes below the current sp is available for use. -- Alan Modra IBM OzLabs - Linux Technology Centre
