mirror of https://github.com/bsnes-emu/bsnes.git
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
struct Flags {
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union {
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uint8_t data = 0;
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BitField<uint8_t, 7> n;
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BitField<uint8_t, 6> v;
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BitField<uint8_t, 5> p;
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BitField<uint8_t, 4> b;
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BitField<uint8_t, 3> h;
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BitField<uint8_t, 2> i;
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BitField<uint8_t, 1> z;
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BitField<uint8_t, 0> c;
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};
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inline operator uint() const { return data; }
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inline auto& operator =(uint value) { return data = value, *this; }
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inline auto& operator&=(uint value) { return data &= value, *this; }
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inline auto& operator|=(uint value) { return data |= value, *this; }
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inline auto& operator^=(uint value) { return data ^= value, *this; }
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};
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struct Register {
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union {
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uint16_t w = 0;
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BitField<uint16_t, 0, 7> l;
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BitField<uint16_t, 8, 15> h;
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};
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inline operator uint() const { return w; }
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inline auto operator=(const Register& value) { w = value.w; }
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inline auto operator++(int) { uint value = w++; return value; }
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inline auto operator--(int) { uint value = w--; return value; }
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inline auto& operator++() { return ++w, *this; }
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inline auto& operator--() { return --w, *this; }
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inline auto& operator =(uint value) { return w = value, *this; }
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inline auto& operator&=(uint value) { return w &= value, *this; }
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inline auto& operator|=(uint value) { return w |= value, *this; }
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inline auto& operator^=(uint value) { return w ^= value, *this; }
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inline auto& operator+=(uint value) { return w += value, *this; }
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inline auto& operator-=(uint value) { return w -= value, *this; }
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};
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struct Registers {
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Register pc;
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union {
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uint16_t ya;
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struct { uint8_t order_lsb2(a, y); };
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};
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uint8_t x, s;
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Flags p;
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};
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