_mpic_read
brr1 = _mpic_read(mpic->reg_type, &mpic->thiscpuregs,
return _mpic_read(type, &mpic->gregs, offset);
return _mpic_read(mpic->reg_type, &mpic->tmregs, offset);
return _mpic_read(mpic->reg_type, &mpic->cpuregs[cpu], reg);
val = _mpic_read(mpic->reg_type, &mpic->isus[isu],
#define mpic_read(b,r) _mpic_read(mpic->reg_type,&(b),(r))