FPCSR_C_MASK
excbits = (fsr & FPCSR_C_MASK) >> FPCSR_C_SHIFT;
excbits = (fsr & FPCSR_C_MASK) >> FPCSR_C_SHIFT;
excbits = (fsr & FPCSR_C_MASK) >> FPCSR_C_SHIFT;
fsr &= ~FPCSR_C_MASK;
p->p_md.md_regs->fsr &= ~FPCSR_C_MASK;