Port-powerpc archive

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

Temporary GPR mapping



Hi All !!!

    This is a query regarding the temporary mapping of the GPR's (specific to 603e).
    It has been mentioned in the 603e manual that when TGPR (14 th ) bit in the
    MSR  is set it makes a duplicate copy of GPR0 - GPR3 and TGPR0 - TGPR3
    are made available and any operations made on GPR0-3 is done on TGPR0-3.

    But it also has been mentioned that these are to be used in TLB miss routines.
    My query is realted to this i.e whether these registers can be made available only
    during the processing of any exception by just setting the TGPR bit in MSR or
    is it specific to TBL exceptions only.

regards
karan
 

-- 
***************************************************************************

When the going gets tough...
        The tough get going.

***************************************************************************
 
begin:vcard 
n:KHANNA;KARAN
x-mozilla-html:TRUE
org:C-DOT;CDOS(OS)
adr:;;;;;;
version:2.1
email;internet:karan%cdotd.ernet.in@localhost,karan_khanna%www.com@localhost
title:R.E.
note:room no:-831
x-mozilla-cpt:;0
fn:KARAN KHANNA
end:vcard


Home | Main Index | Thread Index | Old Index