1 files changed, 93 insertions, 0 deletions

diff --git a/arch/arm/nwfpe/fpa11.h b/arch/arm/nwfpe/fpa11.h
new file mode 100644
index 000000000000..45cc65426a22
--- /dev/null
+++ b/arch/arm/nwfpe/fpa11.h
@@ -0,0 +1,93 @@
+/*
+    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__
+
+#define GET_FPA11() ((FPA11 *)(&current_thread_info()->fpstate))
+
+/*
+ * The processes registers are always at the very top of the 8K
+ * stack+task struct.  Use the same method as 'current' uses to
+ * reach them.
+ */
+register unsigned long *user_registers asm("sl");
+
+#define GET_USERREG() (user_registers)
+
+#include <linux/config.h>
+#include <linux/thread_info.h>
+
+/* includes */
+#include "fpsr.h"               /* FP control and status register definitions */
+#include "milieu.h"
+#include "softfloat.h"
+
+#define         typeNone                0x00
+#define         typeSingle              0x01
+#define         typeDouble              0x02
+#define         typeExtended            0x03
+
+/*
+ * This must be no more and no less than 12 bytes.
+ */
+typedef union tagFPREG {
+        float32 fSingle;
+        float64 fDouble;
+#ifdef CONFIG_FPE_NWFPE_XP
+        floatx80 fExtended;
+#else
+        int padding[3];
+#endif
+} FPREG;
+
+/*
+ * FPA11 device model.
+ *
+ * This structure is exported to user space.  Do not re-order.
+ * Only add new stuff to the end, and do not change the size of
+ * any element.  Elements of this structure are used by user
+ * space, and must match struct user_fp in include/asm-arm/user.h.
+ * We include the byte offsets below for documentation purposes.
+ *
+ * The size of this structure and FPREG are checked by fpmodule.c
+ * on initialisation.  If the rules have been broken, NWFPE will
+ * not initialise.
+ */
+typedef struct tagFPA11 {
+/*   0 */ FPREG fpreg[8];       /* 8 floating point registers */
+/*  96 */ FPSR fpsr;            /* floating point status register */
+/* 100 */ FPCR fpcr;            /* floating point control register */
+/* 104 */ unsigned char fType[8];       /* type of floating point value held in
+                                           floating point registers.  One of
+                                           none, single, double or extended. */
+/* 112 */ 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 SetRoundingMode(const unsigned int);
+extern void SetRoundingPrecision(const unsigned int);
+extern void nwfpe_init_fpa(union fp_state *fp);
+
+#endif