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Message-ID: <477DFFC7.8@frisch.fr>
Date: Fri, 04 Jan 2008 10:43:35 +0100
From: Alain Frisch <alain@frisch.fr>
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To: David LONY <david.lony@pragmadev.com>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Interface between Ocaml and Assembler
References: <477DFF6C.1070409@pragmadev.com>
In-Reply-To: <477DFF6C.1070409@pragmadev.com>
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X-Spam: no; 0.00; frisch:01 frisch:01 ocaml:01 ocaml:01 camlparam:01 wrote:01 caml-list:01 functions:01 macros:01 alain:01 alain:01 callback:02 caml:02 assembler:02 assembler:02 

David LONY wrote:
> Is it possible to interface assembler code with an Ocaml code ? I 
> mean..is it possible to call a Ocaml function from an assembler code by 
> using the asm instruction "call my_function" (gas asm)?

Yes, you can call an OCaml function from assembler using the same method 
as from C, that is through caml_callback* functions (see Section 18.7.1 
in the OCaml manual). However, dealing with the GC properly in assembler 
is tricky: you'll have to reproduce the behavior of the CAMLlocal and 
CAMLparam macros.

-- Alain