x86_read_cr2
addr_t cr2 = x86_read_cr2();
signalFrameData->context.uc_mcontext.xregs.state.new_format.fault_address = x86_read_cr2();
signalFrameData->context.uc_mcontext.fpu.fp_fxsave.fault_address = x86_read_cr2();
addr_t cr2 = x86_read_cr2();