Am Freitag, den 27.11.2009, 22:01 +1100 schrieb Benjamin Herrenschmidt: 

On Fri, 2009-11-27 at 09:59 +0100, Stefani Seibold wrote:

quoted

The PPC architecture is unable to debug applications using hardware
floating point, because it would not save the floating point registers.

After returning from the debugger, the contents of register was
modified. This patch fix this bug.

I'm not sure what problem you are trying to fix... debugging FP apps
works just fine afaik. You don't need to flush the FP state into the
thread when delivering the SIGTRAP. If you have a signal handler, that
will be done for you by the signal code before laying out the signal
frame. If you are using ptrace, you should be using the appropriate
ptrace calls to retrieve the FP state and they should do the right thing
to.

Aeh... Forget it! Thank you for the support.

Stefani