1/*
2    NetWinder Floating Point Emulator
3    (c) Rebel.COM, 1998,1999
4
5    Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
6
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 2 of the License, or
10    (at your option) any later version.
11
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16
17    You should have received a copy of the GNU General Public License
18    along with this program; if not, write to the Free Software
19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20*/
21
22#include "fpa11.h"
23
24/* Read and write floating point status register */
25static inline unsigned int readFPSR(void)
26{
27	FPA11 *fpa11 = GET_FPA11();
28	return (fpa11->fpsr);
29}
30
31static inline void writeFPSR(FPSR reg)
32{
33	FPA11 *fpa11 = GET_FPA11();
34	/* the sysid byte in the status register is readonly */
35	fpa11->fpsr = (fpa11->fpsr & MASK_SYSID) | (reg & ~MASK_SYSID);
36}
37
38/* Read and write floating point control register */
39static inline FPCR readFPCR(void)
40{
41	FPA11 *fpa11 = GET_FPA11();
42	/* clear SB, AB and DA bits before returning FPCR */
43	return (fpa11->fpcr & ~MASK_RFC);
44}
45
46static inline void writeFPCR(FPCR reg)
47{
48	FPA11 *fpa11 = GET_FPA11();
49	fpa11->fpcr &= ~MASK_WFC;		/* clear SB, AB and DA bits */
50	fpa11->fpcr |= (reg & MASK_WFC);	/* write SB, AB and DA bits */
51}
52