ARM: add AArch32 support and new vcvt instructions

src/arm/constants-arm.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ARM_CONSTANTS_ARM_H_
 #define V8_ARM_CONSTANTS_ARM_H_
 
 // ARM EABI is required.
 #if defined(__arm__) && !defined(__ARM_EABI__)
 #error ARM EABI support is required.
@@ skipping 338 matching lines @@
   kDoublePrecision = 1
 };
 
 
 // VFP FPSCR constants.
 enum VFPConversionMode {
   kFPSCRRounding = 0,
   kDefaultRoundToZero = 1
 };
 
+enum VCVTRoundingMode {
+  kVcvtTiesToAway = 0,
+  kVcvtTiesToEven = 1,
+  kVcvtTowardPlusInfinity = 2,
+  kVcvtTowardMinusInfinity = 3
+};
+
+
+enum VCVTDataType {
+  kVcvtUnsigned = 0,
+  kVcvtSigned = 1
+};
+
+
 // This mask does not include the "inexact" or "input denormal" cumulative
 // exceptions flags, because we usually don't want to check for it.
 const uint32_t kVFPExceptionMask = 0xf;
 const uint32_t kVFPInvalidOpExceptionBit = 1 << 0;
 const uint32_t kVFPOverflowExceptionBit = 1 << 2;
 const uint32_t kVFPUnderflowExceptionBit = 1 << 3;
 const uint32_t kVFPInexactExceptionBit = 1 << 4;
 const uint32_t kVFPFlushToZeroMask = 1 << 24;
 const uint32_t kVFPDefaultNaNModeControlBit = 1 << 25;
 
@@ skipping 372 matching lines @@
   static int Number(const char* name, bool* is_double);
 
  private:
   static const char* names_[kNumVFPRegisters];
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_CONSTANTS_ARM_H_