37 lines
1.8 KiB
C
37 lines
1.8 KiB
C
// The OS/K Team licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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#define PARITY(v) __builtin_parity(v)
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#define SET_ZF(v) \
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R(RFX) = ((v) == 0 ? (R(RFX)|ZF) : (R(RFX)&~ZF))
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#define SET_SF(v) \
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R(RFX) = ((long)(v) < 0 ? (R(RFX)|SF) : (R(RFX)&~SF))
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#define SET_PF(v) \
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R(RFX) = (PARITY(v) == 1 ? (R(RFX)|PF) : (R(RFX)&~PF))
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#define SET_ZSF(v) \
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SET_ZF(v); \
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SET_SF(v)
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#define SET_ZSPF(v) \
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SET_ZF(v); \
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SET_SF(v); \
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SET_PF(v)
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#define COMPARE(v1, v2) \
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ulong _u1 = (ulong)v1, _u2 = (ulong)v2; \
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long _s1 = (long)v1, _s2 = (long)v2; \
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\
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if (_u1 < _u2) R(RFX) |= CF; \
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else R(RFX) &= ~CF; \
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\
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if ( ((_s1 < 0) && (_s1 > LONG_MAX + _s2)) \
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|| ((_s2 > 0) && (_s1 < LONG_MIN + _s2)) ) \
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R(RFX) |= OF; \
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else R(RFX) &= ~OF; \
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SET_ZSF(_u1 - _u2);
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