Presumably one of the benefits of trace would be to
be able to step back/forth.

Here is an idea on how to represent this in gdb: add a new
thread to the gdb remote protocol. This thread would represent
each instruction in the trace as a call frame in the GDB
"bt" instruction.

No change required to GDB user interfaces :-)

-- 
Øyvind Harboe
US toll free 1-866-980-3434 / International +47 51 63 25 00
http://www.zylin.com/zy1000.html
ARM7 ARM9 ARM11 XScale Cortex
JTAG debugger and flash programmer
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