05a7f14f8d
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10950 a1c6a512-1295-4272-9138-f99709370657
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 1996-1998 Szeredi Miklos
|
|
* Email: mszeredi@inf.bme.hu
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version. See the file COPYING.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#define ADDSUB(r, op, tbl) \
|
|
{ \
|
|
register byte res; \
|
|
register int idx; \
|
|
register int flag; \
|
|
res = RA op; \
|
|
idx = IDXCALC(RA, r, res); \
|
|
RA = res; \
|
|
flag = (RF & ~(AALLF)) | \
|
|
TAB(tbl)[idx]; \
|
|
if(!res) flag |= ZF; \
|
|
RF = flag; \
|
|
}
|
|
|
|
|
|
#define ADD(r) ADDSUB(r, + r, addf_tbl)
|
|
#define ADC(r) ADDSUB(r, + r + (RF & CF), addf_tbl)
|
|
#define SUB(r) ADDSUB(r, - r, subf_tbl)
|
|
#define SBC(r) ADDSUB(r, - r - (RF & CF), subf_tbl)
|
|
|
|
#define AND(r) \
|
|
{ \
|
|
register byte res; \
|
|
register byte flag; \
|
|
res = RA & r; \
|
|
RA = res; \
|
|
flag = (RF & ~(AALLF)) | \
|
|
TAB(orf_tbl)[res] | HF; \
|
|
RF = flag; \
|
|
}
|
|
|
|
|
|
#define XOR(r) \
|
|
{ \
|
|
register byte res; \
|
|
register byte flag; \
|
|
res = RA ^ r; \
|
|
RA = res; \
|
|
flag = (RF & ~(AALLF)) | \
|
|
TAB(orf_tbl)[res]; \
|
|
RF = flag; \
|
|
}
|
|
|
|
|
|
#define OR(r) \
|
|
{ \
|
|
register byte res; \
|
|
register byte flag; \
|
|
res = RA | r; \
|
|
RA = res; \
|
|
flag = (RF & ~(AALLF)) | \
|
|
TAB(orf_tbl)[res]; \
|
|
RF = flag; \
|
|
}
|
|
|
|
|
|
#define CP(r) \
|
|
{ \
|
|
register byte res; \
|
|
register int idx; \
|
|
register int flag; \
|
|
res = RA - r; \
|
|
idx = IDXCALC(RA, r, res); \
|
|
flag = (RF & ~(AALLF)) | \
|
|
TAB(subf_tbl)[idx]; \
|
|
if(!res) flag |= ZF; \
|
|
RF = flag; \
|
|
}
|