Detected by cppcheck, patch submitted upstream. Change-Id: Ieeec9d2e7e2c22d64c94936958f5a4ff02d3548b
Simplified stack unwinder for ARM. This is port of http://www.mcternan.me.uk/ArmStackUnwinding/ backtrace() is called from UIE() on native targets and from panicf() on both native and ARM RaaA. Change-Id: I8e4b3c02490dd60b30aa372fe842d193b8929ce0