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/*
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.
*/
#ifndef __FPA11_H__
#define __FPA11_H__
/* includes */
#include "fpsr.h" /* FP control and status register definitions */
#include "softfloat.h"
/* Need task_struct */
#include <linux/sched.h>
#define typeNone 0x00
#define typeSingle 0x01
#define typeDouble 0x02
#define typeExtended 0x03
typedef union tagFPREG {
float32 fSingle;
float64 fDouble;
floatx80 fExtended;
} FPREG;
/* FPA11 device model */
typedef struct tagFPA11 {
unsigned int *userRegisters;
FPREG fpreg[8]; /* 8 floating point registers */
FPSR fpsr; /* floating point status register */
FPCR fpcr; /* floating point control register */
unsigned char fType[8]; /* type of floating point value held in
floating point registers. One of none
single, double or extended. */
int initflag; /* this is special. The kernel guarantees
to set it to 0 when a thread is launched,
so we can use it to detect whether this
instance of the emulator needs to be
initialised. */
} FPA11;
extern void resetFPA11(void);
extern void SetRoundingMode(const unsigned int);
extern void SetRoundingPrecision(const unsigned int);
#define GET_FPA11() ((FPA11 *)(¤t->thread.fpstate))
#define GET_USERREG() (GET_FPA11()->userRegisters)
#endif
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