Re: [Caml-list] OCaml and SGX

[Ivana Vukotic <ivanatodvuk@gmail.com>]

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Dear Nicolas,

The call to caml_startup can be find in Enclave/Enclave.c

Best regards,
Ivana

On Thu, Oct 11, 2018 at 1:59 PM Nicolás Ojeda Bär <
nicolas.ojeda.bar@lexifi.com> wrote:

> Dear Ivana,
>
> There doesn't seem to be any call to caml_startup in the code you posted.
>
> Regards,
> Nicolás
> On Thu, Oct 11, 2018 at 1:52 PM Ivana Vukotic <ivanatodvuk@gmail.com>
> wrote:
> >
> > Dera Nicolas,
> >
> > Thank you for your suggestion!
> >
> > Actually I already posted the same question with code on the github:
> > https://github.com/intel/linux-sgx/issues/315
> >
> >
> > Best,
> > Ivana
> >
> >
> > On Thu, Oct 11, 2018 at 1:42 PM Nicolás Ojeda Bär <
> nicolas.ojeda.bar@lexifi.com> wrote:
> >>
> >> Dear Ivana,
> >>
> >> You may get more people willing to help if you put up the simple
> >> example somewhere publicly accessible, such as github.
> >>
> >> Best wishes,
> >> Nicolás
> >> On Tue, Oct 9, 2018 at 6:23 PM Ivana Vukotic <ivanatodvuk@gmail.com>
> wrote:
> >> >
> >> > Hi,
> >> >
> >> > We are trying to run some OCaml code within an Intel SGX enclave.
> >> >
> >> > This OCaml code is called by a C wrapper using the method described
> >> > here:  https://caml.inria.fr/pub/docs/manual-ocaml/intfc.html
> >> >
> >> > Because Intel SGX doesn't support the entire standard C library, we
> had
> >> > to create ocalls for the functions that are used by ocamlrun but not
> >> > supported by SGX.  Using the functionalities provided by Intel SGX, we
> >> > managed to create an .so library containing our OCaml code along with
> >> > the C wrapper.  This .so library is what is meant to run in an SGX
> >> > enclave (we so far only implemented the ocalls that we needed, and not
> >> > all missing functionalities from ocamlrun).
> >> >
> >> > Our problem is now that when we call caml_startup from within our C
> >> > wrapper (in order to start the OCaml code), the code seem to simply
> call
> >> > 'exit' and stop there.  Does anyone know why this call to caml_startup
> >> > would call 'exit'?
> >> >
> >> > We managed to create a simple example, which I can forward to anyone
> interested
> >> > to take a look (unfortunately mailing list has a limited attachment
> and I can not
> >> >  send it).
> >> >
> >> > Please note that we use ocaml 4.06.1 and gcc 7.3.0
> >> >
> >> > Best,
> >> >
> >> > Ivana
>

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