hardware watchpoints for ppc

[Wolfgang Schmieder]

Hello,

is there anybody who knows how I can set hardware watchpoints on ppc boards ? 
I have a mpc855 board running a multithreaded application. It appears that 
one thread (always the same thread) has a corrupted stack (always at the same 
address). I guess I need to set a hardware watchpoint in a remote debugging 
session to find the piece of code which is corrupting the stack.

There is one gdb mailing list thread about "supporting hw break/watch for 
embedded ppc", which makes me think that there is at least a patch or 
workaround available to set hardware watchpoints on a ppc board.

Thanks,

Wolfgang