signal_get_user_stack
void signal_get_user_stack(addr_t address, stack_t* stack);
signal_get_user_stack(frame->usr_sp, &signalFrameData->context.uc_stack);
signal_get_user_stack(frame->sp, &signalFrameData->context.uc_stack);
signal_get_user_stack(frame->sp, &signalFrameData->context.uc_stack);
signal_get_user_stack(frame->user_sp, &signalFrameData->context.uc_stack);
signal_get_user_stack(frame->user_sp, &signalFrameData->context.uc_stack);