PowerTAP on MPC8260

manisha gautam manishag at lycos.com
Wed Jan 7 22:42:29 EST 2004

Hi All,

I am using PowerTAP on MPC8260.
I am facing the problem of memory corruption when
a piece of code is run with memory translations enabled.
But that doesn't happen if the memory is not translated.
The following instructions are executed:

stwu r1, 0x20(r1)
mfpsr r0, DSISR
li r0, 0

After the the second instruction is executed, r1 gets
again decremented by 0x20. The contents of (r1)+0x20+0x20 are modified.
Kindly help me. Thanks in advance.


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