patch-2.2.18 linux/arch/arm/nwfpe/fpa11.h

• Lines: 62
• Date: Fri Sep 15 23:28:37 2000
• Orig file: v2.2.17/arch/arm/nwfpe/fpa11.h
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/arch/arm/nwfpe/fpa11.h linux/arch/arm/nwfpe/fpa11.h
@@ -0,0 +1,61 @@
+/*
+    NetWinder Floating Point Emulator
+    (c) Corel Computer Corporation, 1998
+    
+    Direct questions, comments to Scott Bambrough <scottb@corelcomputer.com>
+
+    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"
+
+#define		typeNone		0x00
+#define		typeSingle		0x01
+#define		typeDouble		0x02
+#define		typeExtended		0x03
+
+typedef struct tagFPREG {
+   unsigned int fType;
+   union {
+      float32  fSingle;
+      float64  fDouble;
+      floatx80 fExtended;
+   } fValue;
+} FPREG;
+
+/* FPA11 device model */
+typedef struct tagFPA11 {
+  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. */
+  FPREG fpreg[8];		/* 8 floating point registers */
+  FPSR fpsr;			/* floating point status register */
+  FPCR fpcr;			/* floating point control register */
+} FPA11;
+
+extern void resetFPA11(void);
+extern void SetRoundingMode(const unsigned int);
+extern void SetRoundingPrecision(const unsigned int);
+
+extern FPA11 *fpa11;
+
+#endif