1 files changed, 83 insertions, 0 deletions

diff --git a/arch/mips/math-emu/ieee754dp.h b/arch/mips/math-emu/ieee754dp.h
new file mode 100644
index 000000000000..a37370dae232
--- /dev/null
+++ b/arch/mips/math-emu/ieee754dp.h
@@ -0,0 +1,83 @@
+/*
+ * IEEE754 floating point
+ * double precision internal header file
+ */
+/*
+ * MIPS floating point support
+ * Copyright (C) 1994-2000 Algorithmics Ltd.
+ * http://www.algor.co.uk
+ *
+ * ########################################################################
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.,
+ *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * ########################################################################
+ */
+
+
+#include "ieee754int.h"
+
+#define assert(expr) ((void)0)
+
+/* 3bit extended double precision sticky right shift */
+#define XDPSRS(v,rs)    \
+  ((rs > (DP_MBITS+3))?1:((v) >> (rs)) | ((v) << (64-(rs)) != 0))
+
+#define XDPSRSX1() \
+  (xe++, (xm = (xm >> 1) | (xm & 1)))
+
+#define XDPSRS1(v)      \
+  (((v) >> 1) | ((v) & 1))
+
+/* convert denormal to normalized with extended exponent */
+#define DPDNORMx(m,e) \
+  while( (m >> DP_MBITS) == 0) { m <<= 1; e--; }
+#define DPDNORMX        DPDNORMx(xm,xe)
+#define DPDNORMY        DPDNORMx(ym,ye)
+
+static __inline ieee754dp builddp(int s, int bx, u64 m)
+{
+        ieee754dp r;
+
+        assert((s) == 0 || (s) == 1);
+        assert((bx) >= DP_EMIN - 1 + DP_EBIAS
+               && (bx) <= DP_EMAX + 1 + DP_EBIAS);
+        assert(((m) >> DP_MBITS) == 0);
+
+        r.parts.sign = s;
+        r.parts.bexp = bx;
+        r.parts.mant = m;
+        return r;
+}
+
+extern int ieee754dp_isnan(ieee754dp);
+extern int ieee754dp_issnan(ieee754dp);
+extern int ieee754si_xcpt(int, const char *, ...);
+extern s64 ieee754di_xcpt(s64, const char *, ...);
+extern ieee754dp ieee754dp_xcpt(ieee754dp, const char *, ...);
+extern ieee754dp ieee754dp_nanxcpt(ieee754dp, const char *, ...);
+extern ieee754dp ieee754dp_bestnan(ieee754dp, ieee754dp);
+extern ieee754dp ieee754dp_format(int, int, u64);
+
+
+#define DPNORMRET2(s,e,m,name,a0,a1) \
+{ \
+    ieee754dp V = ieee754dp_format(s,e,m); \
+    if(TSTX()) \
+      return ieee754dp_xcpt(V,name,a0,a1); \
+    else \
+      return V; \
+}
+
+#define DPNORMRET1(s,e,m,name,a0)  DPNORMRET2(s,e,m,name,a0,a0)