Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 124 insertions, 0 deletions

diff --git a/kernel/arch/arm/nwfpe/single_cpdo.c b/kernel/arch/arm/nwfpe/single_cpdo.c
new file mode 100644
index 000000000..c66981d68
--- /dev/null
+++ b/kernel/arch/arm/nwfpe/single_cpdo.c
@@ -0,0 +1,124 @@
+/*
+    NetWinder Floating Point Emulator
+    (c) Rebel.COM, 1998,1999
+    (c) Philip Blundell, 2001
+
+    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"
+#include "softfloat.h"
+#include "fpopcode.h"
+
+float32 float32_exp(float32 Fm);
+float32 float32_ln(float32 Fm);
+float32 float32_sin(float32 rFm);
+float32 float32_cos(float32 rFm);
+float32 float32_arcsin(float32 rFm);
+float32 float32_arctan(float32 rFm);
+float32 float32_log(float32 rFm);
+float32 float32_tan(float32 rFm);
+float32 float32_arccos(float32 rFm);
+float32 float32_pow(float32 rFn, float32 rFm);
+float32 float32_pol(float32 rFn, float32 rFm);
+
+static float32 float32_rsf(struct roundingData *roundData, float32 rFn, float32 rFm)
+{
+	return float32_sub(roundData, rFm, rFn);
+}
+
+static float32 float32_rdv(struct roundingData *roundData, float32 rFn, float32 rFm)
+{
+	return float32_div(roundData, rFm, rFn);
+}
+
+static float32 (*const dyadic_single[16])(struct roundingData *, float32 rFn, float32 rFm) = {
+	[ADF_CODE >> 20] = float32_add,
+	[MUF_CODE >> 20] = float32_mul,
+	[SUF_CODE >> 20] = float32_sub,
+	[RSF_CODE >> 20] = float32_rsf,
+	[DVF_CODE >> 20] = float32_div,
+	[RDF_CODE >> 20] = float32_rdv,
+	[RMF_CODE >> 20] = float32_rem,
+
+	[FML_CODE >> 20] = float32_mul,
+	[FDV_CODE >> 20] = float32_div,
+	[FRD_CODE >> 20] = float32_rdv,
+};
+
+static float32 float32_mvf(struct roundingData *roundData, float32 rFm)
+{
+	return rFm;
+}
+
+static float32 float32_mnf(struct roundingData *roundData, float32 rFm)
+{
+	return rFm ^ 0x80000000;
+}
+
+static float32 float32_abs(struct roundingData *roundData, float32 rFm)
+{
+	return rFm & 0x7fffffff;
+}
+
+static float32 (*const monadic_single[16])(struct roundingData*, float32 rFm) = {
+	[MVF_CODE >> 20] = float32_mvf,
+	[MNF_CODE >> 20] = float32_mnf,
+	[ABS_CODE >> 20] = float32_abs,
+	[RND_CODE >> 20] = float32_round_to_int,
+	[URD_CODE >> 20] = float32_round_to_int,
+	[SQT_CODE >> 20] = float32_sqrt,
+	[NRM_CODE >> 20] = float32_mvf,
+};
+
+unsigned int SingleCPDO(struct roundingData *roundData, const unsigned int opcode, FPREG * rFd)
+{
+	FPA11 *fpa11 = GET_FPA11();
+	float32 rFm;
+	unsigned int Fm, opc_mask_shift;
+
+	Fm = getFm(opcode);
+	if (CONSTANT_FM(opcode)) {
+		rFm = getSingleConstant(Fm);
+	} else if (fpa11->fType[Fm] == typeSingle) {
+		rFm = fpa11->fpreg[Fm].fSingle;
+	} else {
+		return 0;
+	}
+
+	opc_mask_shift = (opcode & MASK_ARITHMETIC_OPCODE) >> 20;
+	if (!MONADIC_INSTRUCTION(opcode)) {
+		unsigned int Fn = getFn(opcode);
+		float32 rFn;
+
+		if (fpa11->fType[Fn] == typeSingle &&
+		    dyadic_single[opc_mask_shift]) {
+			rFn = fpa11->fpreg[Fn].fSingle;
+			rFd->fSingle = dyadic_single[opc_mask_shift](roundData, rFn, rFm);
+		} else {
+			return 0;
+		}
+	} else {
+		if (monadic_single[opc_mask_shift]) {
+			rFd->fSingle = monadic_single[opc_mask_shift](roundData, rFm);
+		} else {
+			return 0;
+		}
+	}
+
+	return 1;
+}