[Valgrind-users] Using Valgrind for monitoring MMIO Access

[Matthew T. <mat...@sy...>]

Hello,
 
I am investigating using valgrind for tracking MMIO access.
 
Is it possible to configure valgrind to display reads and
writes to memory locations if they can be determined?  For
example, debugging a XFree86 driver by looking at what what
is written to different parts of memory.
 
Obviously with instrumentation this would appear to be possible,
but I am wondering if there is a valgrind skin that allows you
to do something like...
 
   valgrind --skin=memwatch --region=000a0000-000c0000 X
 
And consequently understand all the reads and writes (and
possibly execution) of data and code in the BIOS.
 
Looking forward to replies (and am more than willing to be a
guinea pig!).
 
Regards,
 
Matthew