bsnes/higan/processor/v30mz/registers.cpp

auto V30MZ::regb(uint8 modRM) -> uint8& {
  static uint8* p[] = {&r.al, &r.cl, &r.dl, &r.bl, &r.ah, &r.ch, &r.dh, &r.bh};
  return *p[(modRM >> 3) & 7];
}

auto V30MZ::regw(uint8 modRM) -> uint16& {
  static uint16* p[] = {&r.ax, &r.cx, &r.dx, &r.bx, &r.sp, &r.bp, &r.si, &r.di};
  return *p[(modRM >> 3) & 7];
}

auto V30MZ::sreg(uint8 modRM) -> uint16& {
  static uint16* p[] = {&r.es, &r.cs, &r.ss, &r.ds};
  return *p[(modRM >> 3) & 3];
}

V30MZ::Registers::Flags::operator uint16() const {
  return m << 15 | 1 << 14 | 1 << 13 | 1 << 12
       | v << 11 | d << 10 | i <<  9 | b <<  8
       | s <<  7 | z <<  6 | h <<  4 | p <<  2
       | 1 <<  1 | c <<  0;
}

auto V30MZ::Registers::Flags::operator=(uint16 data) {
  m = (uint1)(data >> 15);
  v = (uint1)(data >> 11);
  d = (uint1)(data >> 10);
  i = (uint1)(data >>  9);
  b = (uint1)(data >>  8);
  s = (uint1)(data >>  7);
  z = (uint1)(data >>  6);
  h = (uint1)(data >>  4);
  p = (uint1)(data >>  2);
  c = (uint1)(data >>  0);
  return *this;
}