> But it will be easier to make a "bridge" like this one : "asm code" ->
> "C code"->"Ocaml code" ?

Yes, very much easier.

> ld -o test gas.o test.o truc_main.o -L/usr/lib/ocaml/3.09.2/ -lasmrun
> -lm -ldl
>
> /usr/lib/ocaml/3.09.2//libasmrun.a(ints.o): In function
> `caml_int64_of_string':
> (.text+0xb4b): undefined reference to `__udivdi3'
>
> Does anyone has a solution ?

Use "gcc" instead of "ld" for the final linking step.

- Xavier Leroy