Re: [openrisc] Jump instructions

["Damjan Lampret" <lampret@opencores.org>]

Most likely a mistake in the manual, I'd say. Afterall I mentioned I need to
update the manual.

regards,
Damjan

----- Original Message -----
From: "Carlos Sanchez de La Lama" <csanchez@teisa.unican.es>
To: <openrisc@opencores.org>
Sent: Friday, January 24, 2003 4:59 PM
Subject: [openrisc] Jump instructions


> Hello!
>
> The OpenRISC 1000 Architecture Manual states that in "jump" and "jump and
> link" instructions (l.j/l.jal) the immediate offset is added to the
address
> of the delay slot to obtain the jump destination adress. However, the
or1ksim
> simulator and or1200 verilog code seem to perform this addition to the
> address of the jump instruction itself.
>
> GCC calculates jump addresses in the latter way, and code generated runs
> correctly on or1ksim and or1200, so I think that is the right way and what
> manual says is wrong. Please confirm that this is correct.
>
> Best regards,
>
> Carlos Sanchez de La Lama <csanchez@teisa.unican.es>
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