60 lines
1.7 KiB
C++
Executable File
60 lines
1.7 KiB
C++
Executable File
struct flag_t {
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bool n, v, p, b, h, i, z, c;
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inline operator unsigned() const {
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return (n << 7) | (v << 6) | (p << 5) | (b << 4)
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| (h << 3) | (i << 2) | (z << 1) | (c << 0);
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}
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inline unsigned operator=(uint8_t data) {
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n = data & 0x80; v = data & 0x40; p = data & 0x20; b = data & 0x10;
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h = data & 0x08; i = data & 0x04; z = data & 0x02; c = data & 0x01;
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return data;
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}
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inline unsigned operator|=(uint8_t data) { return operator=(operator unsigned() | data); }
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inline unsigned operator^=(uint8_t data) { return operator=(operator unsigned() ^ data); }
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inline unsigned operator&=(uint8_t data) { return operator=(operator unsigned() & data); }
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};
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struct word_t {
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union {
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uint16_t w;
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#ifdef BLARGG_BIG_ENDIAN
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struct { uint8_t h, l; };
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#else
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struct { uint8_t l, h; };
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#endif
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};
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inline operator unsigned() const { return w; }
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inline unsigned operator=(unsigned data) { return w = data; }
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inline unsigned operator++() { return ++w; }
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inline unsigned operator--() { return --w; }
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inline unsigned operator++(int) { unsigned data = w++; return data; }
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inline unsigned operator--(int) { unsigned data = w--; return data; }
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inline unsigned operator+=(unsigned data) { return w += data;; }
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inline unsigned operator-=(unsigned data) { return w -= data;; }
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inline unsigned operator|=(unsigned data) { return w |= data; }
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inline unsigned operator^=(unsigned data) { return w ^= data; }
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inline unsigned operator&=(unsigned data) { return w &= data; }
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};
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struct regs_t {
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word_t pc;
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union {
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uint16_t ya;
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#ifdef BLARGG_BIG_ENDIAN
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struct { uint8_t y, a; };
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#else
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struct { uint8_t a, y; };
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#endif
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};
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uint8_t x, s;
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flag_t p;
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};
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