From: Xavier Leroy <xavier.leroy@inria.fr>
To: Richard Zidlicky <rz@linux-m68k.org>
Cc: sven.luther@wanadoo.fr, caml-list@inria.fr
Subject: Re: [Caml-list] Native compiler support for m68k?
Date: Tue, 26 Aug 2003 15:43:18 +0200 [thread overview]
Message-ID: <20030826154318.A28532@pauillac.inria.fr> (raw)
In-Reply-To: <20030824200539.GA1118@linux-m68k.org>; from rz@linux-m68k.org on Sun, Aug 24, 2003 at 10:05:39PM +0200
> ok, I got 2.0.4 working for m68k-linux, not very hard.
> Speed is quite impressive, fib is faster than gcc code ?!
Sure: gcc passes all parameters on the stack, ocamlopt passes the
first ones in registers.
> One thing that I need to verify is the interaction of the native
> compiler and the strange m68k-linux ABI which is different from
> SUN or BSD. The unusual part of m68k-linux ABI is that functions
> returning pointer return their value in register a0, while integer
> types are retuned in d0.
>
> How does the code generated by the native compiler interact
> with c-ABI functions?
C functions that can be called by Caml code must be declared with
return type "value", which is "long". So, the C compiler will arrange
for the result to be in D0, which is where ocamlopt-generated code
expects to find it.
- Xavier Leroy
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next prev parent reply other threads:[~2003-08-26 13:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20030820104917.GB6782@linux-m68k.org>
2003-08-20 12:32 ` Xavier Leroy
2003-08-20 17:46 ` Gleb N. Semenov
2003-08-21 14:56 ` Xavier Leroy
2003-08-21 19:32 ` Daniel M. Albro
2003-08-24 20:05 ` Richard Zidlicky
2003-08-26 13:43 ` Xavier Leroy [this message]
2003-08-30 9:59 ` Richard Zidlicky
2003-09-05 21:58 ` Richard Zidlicky
2003-09-06 0:53 ` Byron Hale
2003-09-06 10:01 ` Benjamin Geer
2003-09-07 13:37 ` David MENTRE
2003-09-08 9:52 ` Damien Doligez
2003-09-08 20:36 ` [Caml-list] GC Question Christophe Raffalli
2003-09-09 9:32 ` Pierre Weis
2003-09-09 10:40 ` Christophe Raffalli
2003-09-11 15:04 ` Xavier Leroy
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