Simon Glass b2e16a85a1 Add trace library ...

Add a library which supports tracing of execution using built-in gcc
features and a microsecond timer. This can be used to record a list of
function which are executed, along with a timestamp for each. Later
this information can be sent to the host for processing.

Signed-off-by: Simon Glass <sjg@chromium.org>

2013-06-26 10:16:41 -04:00

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