Adds vstm, vldm to ARM simulator, assembler, disassembler

runtime/vm/constants_arm.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_CONSTANTS_ARM_H_
 #define VM_CONSTANTS_ARM_H_
 
 namespace dart {
 
 // We support both VFPv3-D16 and VFPv3-D32 profiles, but currently only one at
@@ skipping 468 matching lines @@
             ((Bits(4, 4) & 0xd) == 1));
   }
 
   // Test for VFP load and store instructions of type 6.
   inline bool IsVFPLoadStore() const {
     ASSERT(ConditionField() != kSpecialCondition);
     ASSERT(TypeField() == 6);
     return ((Bits(20, 5) & 0x12) == 0x10) && (Bits(9, 3) == 5);
   }
 
+  // Test for VFP multiple load and store instructions of type 6.
+  inline bool IsVFPMultipleLoadStore() const {
+    ASSERT(ConditionField() != kSpecialCondition);
+    ASSERT(TypeField() == 6);
+    int32_t puw = (PUField() << 1) | Bit(21);  // don't care about D bit
+    return (Bits(9, 3) == 5) && ((puw == 2) || (puw == 3) || (puw == 5));
+  }
+
   // Special accessors that test for existence of a value.
   inline bool HasS()    const { return SField() == 1; }
   inline bool HasB()    const { return BField() == 1; }
   inline bool HasW()    const { return WField() == 1; }
   inline bool HasL()    const { return LField() == 1; }
   inline bool HasSign() const { return SignField() == 1; }
   inline bool HasH()    const { return HField() == 1; }
   inline bool HasLink() const { return LinkField() == 1; }
 
   // Instructions are read out of a code stream. The only way to get a
   // reference to an instruction is to convert a pointer. There is no way
   // to allocate or create instances of class Instr.
   // Use the At(pc) function to create references to Instr.
   static Instr* At(uword pc) { return reinterpret_cast<Instr*>(pc); }
   Instr* Next() { return this + kInstrSize; }
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_ARM_H_