Re: [Qemu-devel] [PATCH 1/6] oslib-posix: add helpers for stack alloc and free

[Peter Lieven]

Am 04.07.2016 um 12:34 schrieb Paolo Bonzini:
> On 04/07/2016 12:25, Peter Lieven wrote:
> > > No, you just pass the stack and the runtime takes care of initializing
> > > the two stack pointers:
> > >
> > >       uc.uc_link = &old_uc;
> > >       uc.uc_stack.ss_sp = co->stack;
> > >       uc.uc_stack.ss_size = stack_size;
> > >       uc.uc_stack.ss_flags = 0;
> > So, you would basically copy the if/elif part from allocatestack.c ?
> Yes, but note that _STACK_GROWS_{DOWN,UP} and
> NEED_SEPARATE_REGISTER_STACK are glibc-specific.  You need to use
> HOST_IA64 and HOST_HPPA.

Is HOST_HPPA the only supported target where the stack grows up?

Peter