ALPHA_PSL_USERMODE
if (tfps & ALPHA_PSL_USERMODE) {
user = (framep->tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0;
#define ALPHA_PSL_USERSET ALPHA_PSL_USERMODE
(((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0)
sigframe.uc.uc_mcontext.sc_ps = ALPHA_PSL_USERMODE;
sigframe.sf_sc.sc_ps = ALPHA_PSL_USERMODE;
if (context.sc_ps != ALPHA_PSL_USERMODE)
uc->uc_mcontext.__gregs[_REG_PS] &= ~ALPHA_PSL_USERMODE;