From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 16 Apr 2005 15:20:36 -0700
Subject: Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
---
 arch/ppc/math-emu/soft-fp.h | 104 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 arch/ppc/math-emu/soft-fp.h

(limited to 'arch/ppc/math-emu/soft-fp.h')

diff --git a/arch/ppc/math-emu/soft-fp.h b/arch/ppc/math-emu/soft-fp.h
new file mode 100644
index 000000000000..cca39598f873
--- /dev/null
+++ b/arch/ppc/math-emu/soft-fp.h
@@ -0,0 +1,104 @@
+#ifndef SOFT_FP_H
+#define SOFT_FP_H
+
+#include "sfp-machine.h"
+
+#define _FP_WORKBITS		3
+#define _FP_WORK_LSB		((_FP_W_TYPE)1 << 3)
+#define _FP_WORK_ROUND		((_FP_W_TYPE)1 << 2)
+#define _FP_WORK_GUARD		((_FP_W_TYPE)1 << 1)
+#define _FP_WORK_STICKY		((_FP_W_TYPE)1 << 0)
+
+#ifndef FP_RND_NEAREST
+# define FP_RND_NEAREST		0
+# define FP_RND_ZERO		1
+# define FP_RND_PINF		2
+# define FP_RND_MINF		3
+#ifndef FP_ROUNDMODE
+# define FP_ROUNDMODE		FP_RND_NEAREST
+#endif
+#endif
+
+#define _FP_ROUND_NEAREST(wc, X)			\
+({  int __ret = 0;					\
+    int __frac = _FP_FRAC_LOW_##wc(X) & 15;		\
+    if (__frac & 7) {					\
+      __ret = EFLAG_INEXACT;				\
+      if ((__frac & 7) != _FP_WORK_ROUND)		\
+        _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND);		\
+      else if (__frac & _FP_WORK_LSB)			\
+        _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND);		\
+    }							\
+    __ret;						\
+})
+
+#define _FP_ROUND_ZERO(wc, X)				\
+({  int __ret = 0;					\
+    if (_FP_FRAC_LOW_##wc(X) & 7)			\
+      __ret = EFLAG_INEXACT;				\
+    __ret;						\
+})
+
+#define _FP_ROUND_PINF(wc, X)				\
+({  int __ret = EFLAG_INEXACT;				\
+    if (!X##_s && (_FP_FRAC_LOW_##wc(X) & 7))		\
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB);		\
+    else __ret = 0;					\
+    __ret;						\
+})
+
+#define _FP_ROUND_MINF(wc, X)				\
+({  int __ret = EFLAG_INEXACT;				\
+    if (X##_s && (_FP_FRAC_LOW_##wc(X) & 7))		\
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB);		\
+    else __ret = 0;					\
+    __ret;						\
+})
+
+#define _FP_ROUND(wc, X)			\
+({	int __ret = 0;				\
+	switch (FP_ROUNDMODE)			\
+	{					\
+	  case FP_RND_NEAREST:			\
+	    __ret |= _FP_ROUND_NEAREST(wc,X);	\
+	    break;				\
+	  case FP_RND_ZERO:			\
+	    __ret |= _FP_ROUND_ZERO(wc,X);	\
+	    break;				\
+	  case FP_RND_PINF:			\
+	    __ret |= _FP_ROUND_PINF(wc,X);	\
+	    break;				\
+	  case FP_RND_MINF:			\
+	    __ret |= _FP_ROUND_MINF(wc,X);	\
+	    break;				\
+	};					\
+	__ret;					\
+})
+
+#define FP_CLS_NORMAL		0
+#define FP_CLS_ZERO		1
+#define FP_CLS_INF		2
+#define FP_CLS_NAN		3
+
+#define _FP_CLS_COMBINE(x,y)	(((x) << 2) | (y))
+
+#include "op-1.h"
+#include "op-2.h"
+#include "op-4.h"
+#include "op-common.h"
+
+/* Sigh.  Silly things longlong.h needs.  */
+#define UWtype		_FP_W_TYPE
+#define W_TYPE_SIZE	_FP_W_TYPE_SIZE
+
+typedef int SItype __attribute__((mode(SI)));
+typedef int DItype __attribute__((mode(DI)));
+typedef unsigned int USItype __attribute__((mode(SI)));
+typedef unsigned int UDItype __attribute__((mode(DI)));
+#if _FP_W_TYPE_SIZE == 32
+typedef unsigned int UHWtype __attribute__((mode(HI)));
+#elif _FP_W_TYPE_SIZE == 64
+typedef USItype UHWtype;
+#endif
+
+#endif
-- 
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