[deliverable/linux.git] / arch / arm / nwfpe / fpa11.inl

/*
    NetWinder Floating Point Emulator
    (c) Rebel.COM, 1998,1999

    Direct questions, comments to Scott Bambrough <scottb@netwinder.org>

    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.

    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.
*/

#include "fpa11.h"

/* Read and write floating point status register */
static inline unsigned int readFPSR(void)
{
	FPA11 *fpa11 = GET_FPA11();
	return (fpa11->fpsr);
}

static inline void writeFPSR(FPSR reg)
{
	FPA11 *fpa11 = GET_FPA11();
	/* the sysid byte in the status register is readonly */
	fpa11->fpsr = (fpa11->fpsr & MASK_SYSID) | (reg & ~MASK_SYSID);
}

/* Read and write floating point control register */
static inline FPCR readFPCR(void)
{
	FPA11 *fpa11 = GET_FPA11();
	/* clear SB, AB and DA bits before returning FPCR */
	return (fpa11->fpcr & ~MASK_RFC);
}

static inline void writeFPCR(FPCR reg)
{
	FPA11 *fpa11 = GET_FPA11();
	fpa11->fpcr &= ~MASK_WFC;		/* clear SB, AB and DA bits */
	fpa11->fpcr |= (reg & MASK_WFC);	/* write SB, AB and DA bits */
}
Commit	Line	Data
1da177e4 LT	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 */
38598105	25	static inline unsigned int readFPSR(void)
1da177e4 LT	26	{
	27	FPA11 *fpa11 = GET_FPA11();
	28	return (fpa11->fpsr);
	29	}
	30
38598105	31	static inline void writeFPSR(FPSR reg)
1da177e4 LT	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 */
38598105	39	static inline FPCR readFPCR(void)
1da177e4 LT	40	{
	41	FPA11 *fpa11 = GET_FPA11();
	42	/* clear SB, AB and DA bits before returning FPCR */
	43	return (fpa11->fpcr & ~MASK_RFC);
	44	}
	45
38598105	46	static inline void writeFPCR(FPCR reg)
1da177e4 LT	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	}