in my branch I just added a minimal implementation for the ARM ITM (Instrumentation Trace Macrocell).
it is currently intended to display a trace stream (the projects generated by the GNU ARM Eclipse C/C++ wizards can be configured to forward a trace_printf() stream to ITM, stimulus port 0). as it is now, the ITM implementation is minimal, it just forwards all bytes written to stimulus port 0 to stderr. to simplify testing, for now the device starts as enabled (in real life the debugger should set some bits to enable it). probably some properties should be added, to configure the number of stimulus ports. a mechanism to enable/disable the ITM might also be required. if someone is interested in using it, or possibly improving it, the sources are publicly available in the GNU ARM Eclipse QEMU repository (git://git.code.sf.net/p/gnuarmeclipse/qemu, the gnuarmeclipse-dev branch). regards, Liviu
