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Re: [PATCH] swapcontext vs libpthread, round 9

Joerg Sonnenberger <> wrote:

> I still object to adding _UC_TLSBASE to ports that don't need it. This
> can be done entire in userland, so no kernel change should be required
> or done.

For now all ports implement swapcontext() by doing a system call. My
patch fixes a bug while keeping the system call based implementation.

Further work could make swapcontext() purely userland on ports where it
is possible. I think the patch I propose do not prevent doing so. It
even makes it easier since it introduces a libc stub for setcontext(),
which can be overriden. 

If we cannot settle on that, we need to core to make a decision.

Emmanuel Dreyfus

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