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.
> In this case I would also count the guardpage as part of the stack, so
> that the usable stack size is actually reduced by one page?
Yes.
Paolo
