1 files changed, 90 insertions, 0 deletions

diff --git a/arch/arm/nwfpe/fpopcode.c b/arch/arm/nwfpe/fpopcode.c
new file mode 100644
index 000000000000..4c9f5703148c
--- /dev/null
+++ b/arch/arm/nwfpe/fpopcode.c
@@ -0,0 +1,90 @@
+/*
+    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.
+*/
+
+#include <linux/config.h>
+#include "fpa11.h"
+#include "softfloat.h"
+#include "fpopcode.h"
+#include "fpsr.h"
+#include "fpmodule.h"
+#include "fpmodule.inl"
+
+#ifdef CONFIG_FPE_NWFPE_XP
+const floatx80 floatx80Constant[] = {
+        {0x0000, 0x0000000000000000ULL},        /* extended 0.0 */
+        {0x3fff, 0x8000000000000000ULL},        /* extended 1.0 */
+        {0x4000, 0x8000000000000000ULL},        /* extended 2.0 */
+        {0x4000, 0xc000000000000000ULL},        /* extended 3.0 */
+        {0x4001, 0x8000000000000000ULL},        /* extended 4.0 */
+        {0x4001, 0xa000000000000000ULL},        /* extended 5.0 */
+        {0x3ffe, 0x8000000000000000ULL},        /* extended 0.5 */
+        {0x4002, 0xa000000000000000ULL}         /* extended 10.0 */
+};
+#endif
+
+const float64 float64Constant[] = {
+        0x0000000000000000ULL,  /* double 0.0 */
+        0x3ff0000000000000ULL,  /* double 1.0 */
+        0x4000000000000000ULL,  /* double 2.0 */
+        0x4008000000000000ULL,  /* double 3.0 */
+        0x4010000000000000ULL,  /* double 4.0 */
+        0x4014000000000000ULL,  /* double 5.0 */
+        0x3fe0000000000000ULL,  /* double 0.5 */
+        0x4024000000000000ULL   /* double 10.0 */
+};
+
+const float32 float32Constant[] = {
+        0x00000000,             /* single 0.0 */
+        0x3f800000,             /* single 1.0 */
+        0x40000000,             /* single 2.0 */
+        0x40400000,             /* single 3.0 */
+        0x40800000,             /* single 4.0 */
+        0x40a00000,             /* single 5.0 */
+        0x3f000000,             /* single 0.5 */
+        0x41200000              /* single 10.0 */
+};
+
+/* condition code lookup table
+ index into the table is test code: EQ, NE, ... LT, GT, AL, NV
+ bit position in short is condition code: NZCV */
+static const unsigned short aCC[16] = {
+        0xF0F0,                 // EQ == Z set
+        0x0F0F,                 // NE
+        0xCCCC,                 // CS == C set
+        0x3333,                 // CC
+        0xFF00,                 // MI == N set
+        0x00FF,                 // PL
+        0xAAAA,                 // VS == V set
+        0x5555,                 // VC
+        0x0C0C,                 // HI == C set && Z clear
+        0xF3F3,                 // LS == C clear || Z set
+        0xAA55,                 // GE == (N==V)
+        0x55AA,                 // LT == (N!=V)
+        0x0A05,                 // GT == (!Z && (N==V))
+        0xF5FA,                 // LE == (Z || (N!=V))
+        0xFFFF,                 // AL always
+        0                       // NV
+};
+
+unsigned int checkCondition(const unsigned int opcode, const unsigned int ccodes)
+{
+        return (aCC[opcode >> 28] >> (ccodes >> 28)) & 1;
+}