Browse thread
[Caml-list] ocamlopt, and generated ASM
-
Jonathan Roewen
-
Stephane Glondu
- Stephane Glondu
- Jonathan Roewen
-
Stephane Glondu
[
Home
]
[ Index:
by date
|
by threads
]
[ Message by date: previous | next ] [ Message in thread: previous | next ] [ Thread: previous | next ]
[ Message by date: previous | next ] [ Message in thread: previous | next ] [ Thread: previous | next ]
| Date: | -- (:) |
| From: | Jonathan Roewen <jonathan.roewen@g...> |
| Subject: | Re: [Caml-list] ocamlopt, and generated ASM |
Nevermind. As always, I find the problem -after- mailing the list ;-) On 7/27/05, Stephane Glondu <Stephane.Glondu@crans.org> wrote: > Jonathan Roewen wrote: > > I'm having some esoteric problems with my operating system project, > > and it randomly halting (i.e.: the hlt instruction issued with > > interrupts off). I've tried grepping the ocaml sources, but to no > > avail. > > > > Could someone who has some in-depth knowledge of the code gneretor for > > ocamlopt explain where these hlt instructions come from, and more > > importantly, where abouts they are generated? > > Where are these hlt exactly? In the asm file generated from the .ml > file? In the startup code? In the runtime library? The string "hlt" > doesn't seem to appear in ocaml (at least in version 3.08.3) source > code, so it seems very weird (even though possible) that this > instruction is generated by the compiler... Moreover, you usually need > to be in privilege level 0 (in kernel mode) to execute that > instruction, and there are not many ocamlopt-generated programmes run > in kernel mode... Maybe it is at a place which is not expected to be > reached in "normal" programme execution (such as after a call to > exit()). Are you sure this hlt comes from the ocamlopt generated code? > > > Perhaps ocaml 3.08.2 has some interesting bugs I'm not aware of? > > Actually, I'm working with version 3.08.3. But still, I would be > interested if you found out the problem. > > > -- > > Stephane Glondu. >