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@xxxxxxxx]
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
