From: Frederic Marmond <fmarmond@eprocess.fr>
To: fmarmond@eprocess.fr
Cc: linux-assembly@vger.kernel.org
Subject: Re: question on assembly on SH4 (linux portage)
Date: Thu, 11 Dec 2003 08:43:37 +0100 [thread overview]
Message-ID: <3FD82029.3070806@eprocess.fr> (raw)
In-Reply-To: <3FD48669.9030203@eprocess.fr>
Well, it seems nobody works on SH4 here? ;)
For information in the archives, opcodes for SH4/SH5 can be found here.
http://www.superh.com/documentation/documents.php?id=17
For self-answering (if anybody wants to switch from x86 to sh4 one day):
BSR and BSRF are for relative jumps, we can use JSR for absolute jumps.
Integration in a C/C++ prog is pretty easy, just have to know that a JSR
needs a indirection (mov.l function_to_call_ptr,rx; jsr @rx) (instead
of: bsr function_to_call)
After few hours working on SH4 assembly, it is not too complexe and
powerfull enough to make it fun to code!
Fred
Frederic Marmond wrote:
> Hi,
> I'm working on a SH4 portage, and I have a problem in a function.
> Using a BSR, we seems to be limited to a 12bits jump.
> How may I call a far subroutine?
>
> thanks for help...
>
> Fred
>
>
prev parent reply other threads:[~2003-12-11 7:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-08 14:10 question on assembly on SH4 (linux portage) Frederic Marmond
2003-12-11 7:43 ` Frederic Marmond [this message]
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