[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [avr-gcc-list] eicall & EIND

From: Dusan Ferbas
Subject: Re: [avr-gcc-list] eicall & EIND
Date: Wed, 02 Jul 2008 12:13:26 +0200

Hi Tristan,

thanks for reply.

Gcc can generate code for bootloader.
But I am not sure if eicall does not require EIND to be filled with ones.
Spec (AVR_instr_doc0856.pdf) is saying, that EIND is concatenated with Z (r30, r31),
so EIND=1 should be sufficient.

But when call 0x1f800 is compiled for ATmega128, all "unused" MS bits are filled with ones.

Can I look at your patch what is it about (support for eicall) ?


At 11:27 2.7.2008, Tristan Gingold wrote:
On Jul 2, 2008, at 11:14 AM, Dusan Ferbas wrote:

Hi Tristan,

I noticed a notice about eicall support.
(2008-06-26  Tristan Gingold  <address@hidden> Add support for
avr6 instructions: eijmp, eicall)

Can you point me to some link/resource/advice ?

This is a patch for avrtest (not yet committed) - and avrtest doesn't
support bootloader.

I have not fully followed your issue.  But from what I understand gcc
can't generate code
for 256x bootloader.

Dusan Ferbas

reply via email to

[Prev in Thread] Current Thread [Next in Thread]