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From: <john.gill@quadrics.com>
To: <Piotr.Palka@ascen.pl>, <gcc-help@gcc.gnu.org>
Subject: RE: new asembler command for AVR port
Date: Wed, 21 Jun 2006 15:44:00 -0000	[thread overview]
Message-ID: <30062B7EA51A9045B9F605FAAC1B4F62170EDC@exch01.quadrics.com> (raw)

Two ways maybe:

1: Change binutils. Get hold of binutils source tree and take a look
avr.h. For the binutils-2.15 this looks like:  

./binutils-2.15/include/opcode/avr.h 

Assembler commands are defined 
in the macro AVR_INSN in terms of 16bit opcode, avr port etc. This header shows which
bits of the opcode space are unused.

2: You may be able to just hack an opcode together by just using the gas .hword command
to define your new insn?
eg. In C,

asm volatile (".hword 0xB00B\n");

or in asm in text section.

	.hword 0xB00B


Cheers 

John
-----Original Message-----
From: Piotr Palka [mailto:Piotr.Palka@ascen.pl]
Sent: 21 June 2006 16:24
To: 
Subject: new asembler command for AVR port


Hello, 

I need to add one asembler command to AVR port. It could be anything.
Maybe somebody can tell me how to do that? Which file/s I need to change? Do
I need to change some files in binutils?
I think this is quite easy to do.

Thanks in advance.

Best regards,
Piotr Pałka

             reply	other threads:[~2006-06-21 15:44 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-06-21 15:44 john.gill [this message]
  -- strict thread matches above, loose matches on Subject: below --
2006-06-21 15:23 Piotr Pałka

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