TRAPF_USERMODE
if (TRAPF_USERMODE(tf)) {
printtrap(vector, tf, 1, TRAPF_USERMODE(tf));
user = TRAPF_USERMODE(tf) ? 1 : 0;
printtrap(vector, tf, 0, TRAPF_USERMODE(tf));
#define CLKF_USERMODE(cf) (TRAPF_USERMODE(&(cf)->cf_tf))