89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
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/*
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* Copyright (C) 1996-1998 Szeredi Miklos
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* Email: mszeredi@inf.bme.hu
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version. See the file COPYING.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#define ADDSUB(r, op, tbl) \
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{ \
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register byte res; \
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register int idx; \
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register int flag; \
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res = RA op; \
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idx = IDXCALC(RA, r, res); \
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RA = res; \
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flag = (RF & ~(AALLF)) | \
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TAB(tbl)[idx]; \
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if(!res) flag |= ZF; \
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RF = flag; \
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}
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#define ADD(r) ADDSUB(r, + r, addf_tbl)
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#define ADC(r) ADDSUB(r, + r + (RF & CF), addf_tbl)
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#define SUB(r) ADDSUB(r, - r, subf_tbl)
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#define SBC(r) ADDSUB(r, - r - (RF & CF), subf_tbl)
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#define AND(r) \
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{ \
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register byte res; \
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register byte flag; \
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res = RA & r; \
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RA = res; \
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flag = (RF & ~(AALLF)) | \
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TAB(orf_tbl)[res] | HF; \
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RF = flag; \
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}
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#define XOR(r) \
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{ \
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register byte res; \
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register byte flag; \
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res = RA ^ r; \
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RA = res; \
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flag = (RF & ~(AALLF)) | \
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TAB(orf_tbl)[res]; \
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RF = flag; \
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}
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#define OR(r) \
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{ \
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register byte res; \
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register byte flag; \
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res = RA | r; \
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RA = res; \
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flag = (RF & ~(AALLF)) | \
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TAB(orf_tbl)[res]; \
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RF = flag; \
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}
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#define CP(r) \
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{ \
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register byte res; \
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register int idx; \
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register int flag; \
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res = RA - r; \
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idx = IDXCALC(RA, r, res); \
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flag = (RF & ~(AALLF)) | \
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TAB(subf_tbl)[idx]; \
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if(!res) flag |= ZF; \
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RF = flag; \
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}
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