A missing PPC405 instruction

Hi All,

I was unable find a description of a PPC405 instruction "blrl". It
looks like a branch, but I never found it in the
manuals like UG11. The instruction use can be found in e.g.
edk_root/sw/lib/bsp/xilkernel_v4_00_a/src/syscall/arch/ppc405/
mksyscall.S

Thanks,
Andrew

<andrew.nesterov@softhome.net> wrote in message 
news:8b7189ef-d727-4366-b86d-6fa35c88848e@c65g2000hsa.googlegroups.com...
> Hi All,
>
> I was unable find a description of a PPC405 instruction "blrl". It
> looks like a branch, but I never found it in the
> manuals like UG11. The instruction use can be found in e.g.
> edk_root/sw/lib/bsp/xilkernel_v4_00_a/src/syscall/arch/ppc405/
> mksyscall.S
>
> Thanks,
> Andrew
>

Google says:
branch to the contents of the link register.

Scott

On Jul 30, 8:19 am, "Not Really Me"
<sc...@validatedQWERTYsoftware.XYZZY.com> wrote:
> <andrew.neste...@softhome.net> wrote in message
>
> news:8b7189ef-d727-4366-b86d-6fa35c88848e@c65g2000hsa.googlegroups.com...
>
> > Hi All,
>
> > I was unable find a description of a PPC405 instruction "blrl". It
> > looks like a branch, but I never found it in the
> > manuals like UG11. The instruction use can be found in e.g.
> > edk_root/sw/lib/bsp/xilkernel_v4_00_a/src/syscall/arch/ppc405/
> > mksyscall.S
>
> > Thanks,
> > Andrew
>
> Google says:
> branch to the contents of the link register.
>
> Scott

Thanks Scott.

I have to apologize here, after doing a search of the pdf (that same
UG11) I found the acronym. It is in fact a simplified form
of bclrl, and means Branch to Link Register and Link. I actually knew
that there are simplified mnemonics are utilized along
with complete ones in the PPC, but apparently my experience is short
so far. The problem's solved.

Thanks again,
Andrew

"Not Really Me" <scott@validatedQWERTYsoftware.XYZZY.com> wrote in message 
news:6fbf2pFad9r9U1@mid.individual.net...
>
> <andrew.nesterov@softhome.net> wrote in message 
> news:8b7189ef-d727-4366-b86d-6fa35c88848e@c65g2000hsa.googlegroups.com...
>> Hi All,
>>
>> I was unable find a description of a PPC405 instruction "blrl". It
>> looks like a branch, but I never found it in the
>> manuals like UG11. The instruction use can be found in e.g.
>> edk_root/sw/lib/bsp/xilkernel_v4_00_a/src/syscall/arch/ppc405/
>> mksyscall.S
>>
>> Thanks,
>> Andrew
>>
>
> Google says:
> branch to the contents of the link register.
>


As does the Xilinx PowerPC processor reference guide.

--
Regards,
Richard.

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