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Message
From: =?big5?q?li=20stephen?=<whli_interqos@y...>
Date: Fri Jan 30 04:28:00 CET 2004
Subject: [openrisc] instruction set problem on openrisc
Hi Marko,
Thank you for the advice.
I put the the statement,#define MAC(x,y), into my source code. But it seems that there is not multiply-accumulate instruction in the asm code. Did I do anything wrong? Can you give more details on it? Thank you very much.
Regards,
Stephen
Marko Mlinar <markom@o...> wrote:
> > One more question, If I want to add custom instruction set e.g.
> > multiply - accumulate in to the openrisc, is there any easy way to make
> > the complier to generate the instruction set except modifying the
> > compiler?
>
> That;s the only way. You have to modify compiler to generate your custom
> insns.
You can also make #define MAC(x,y), which will generate via asm statement
"word 0xblabla" instruction.
Marko
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