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Pierre-Etienne Meunier  
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 More options Nov 12 2006, 9:45 am
Newsgroups: fa.caml
From: Pierre-Etienne Meunier <pierreetienne.meun...@ens-lyon.fr>
Date: Sun, 12 Nov 2006 14:45:12 UTC
Local: Sun, Nov 12 2006 9:45 am
Subject: [Caml-list] Bytecode object files structure
Hi,

I'm trying to decrypt .cmo files produced by simple programs, such as
1+1;;
or
print_string "string";;
or
List.length [1;2;3;4;5];;

According to the source of Ocaml, there's something called the
"cmo_magic_number", systematically written at the beginning of all .cmo
files. Does it have a real function for executing the programs, or is it just
a way to make sure the file contains ocaml bytecode ?

Then, there's the address of what seems to be the last bytecode instruction.
Then, the bytecode instructions, as documented in opcodes.ml.

After that, I can't understand anything : there vaguely seems to be some
information related to linking or so... What is the precise structure of this
part ? Is there some kind of a bytecode assembler ?

Thanks,
P.E. Meunier (pierreetienne.meun...@ens-lyon.fr)

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