Thumb2 Backend: Update Code objects with mode, separate Assembler methods for Thumb2

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4911 matching lines @@
   // For kind STUB or ICs, tells whether or not a code object was generated by
   // the optimizing compiler (but it may not be an optimized function).
   bool is_crankshafted();
   inline void set_is_crankshafted(bool value);
 
   // For stubs, tells whether they should always exist, so that they can be
   // called from other stubs.
   inline bool is_pregenerated();
   inline void set_is_pregenerated(bool value);
 
+  inline bool is_thumb_mode();
+
   // [optimizable]: For FUNCTION kind, tells if it is optimizable.
   inline bool optimizable();
   inline void set_optimizable(bool value);
 
   // [has_deoptimization_support]: For FUNCTION kind, tells if it has
   // deoptimization support.
   inline bool has_deoptimization_support();
   inline void set_has_deoptimization_support(bool value);
 
   // [has_debug_break_slots]: For FUNCTION kind, tells if it has
@@ skipping 97 matching lines @@
       KeyedAccessStoreMode store_mode,
       StrictModeFlag strict_mode) {
     return ExtraICStateKeyedAccessStoreMode::encode(store_mode) |
         ExtraICStateStrictMode::encode(strict_mode);
   }
 
   static inline ExtraICState ComputeExtraICState(StubHolder stub_holder) {
     return ExtraICStateStubHolder::encode(stub_holder);
   }
 
+  static inline Flags SetThumbModeInFlags(Flags flag);
+
   // Flags operations.
   static inline Flags ComputeFlags(
       Kind kind,
       InlineCacheState ic_state = UNINITIALIZED,
       ExtraICState extra_ic_state = kNoExtraICState,
       StubType type = NORMAL,
       int argc = -1,
-      InlineCacheHolderFlag holder = OWN_MAP);
+      InlineCacheHolderFlag holder = OWN_MAP,
+      bool thumb_mode = false);
 
   static inline Flags ComputeMonomorphicFlags(
       Kind kind,
       ExtraICState extra_ic_state = kNoExtraICState,
       StubType type = NORMAL,
       int argc = -1,
       InlineCacheHolderFlag holder = OWN_MAP);
 
   static inline InlineCacheState ExtractICStateFromFlags(Flags flags);
   static inline StubType ExtractTypeFromFlags(Flags flags);
@@ skipping 142 matching lines @@
 
   static const int kAllowOSRAtLoopNestingLevelOffset = kFullCodeFlags + 1;
   static const int kProfilerTicksOffset = kAllowOSRAtLoopNestingLevelOffset + 1;
 
   // Flags layout.  BitField<type, shift, size>.
   class ICStateField: public BitField<InlineCacheState, 0, 3> {};
   class TypeField: public BitField<StubType, 3, 3> {};
   class CacheHolderField: public BitField<InlineCacheHolderFlag, 6, 1> {};
   class KindField: public BitField<Kind, 7, 4> {};
   class IsPregeneratedField: public BitField<bool, 11, 1> {};
-  class ExtraICStateField: public BitField<ExtraICState, 12, 5> {};
-  class ExtendedExtraICStateField: public BitField<ExtraICState, 12,
-      PlatformSmiTagging::kSmiValueSize - 12 + 1> {};  // NOLINT
+  class IsThumbModeField: public BitField<bool, 12, 1> {};
+  class ExtraICStateField: public BitField<ExtraICState, 13, 5> {};
+  class ExtendedExtraICStateField: public BitField<ExtraICState, 13,
+      PlatformSmiTagging::kSmiValueSize - 13 + 1> {};  // NOLINT
   STATIC_ASSERT(ExtraICStateField::kShift == ExtendedExtraICStateField::kShift);
 
   // KindSpecificFlags1 layout (STUB and OPTIMIZED_FUNCTION)
   static const int kStackSlotsFirstBit = 0;
   static const int kStackSlotsBitCount = 24;
   static const int kHasFunctionCacheFirstBit =
       kStackSlotsFirstBit + kStackSlotsBitCount;
   static const int kHasFunctionCacheBitCount = 1;
   static const int kMarkedForDeoptimizationFirstBit =
       kStackSlotsFirstBit + kStackSlotsBitCount + 1;
@@ skipping 35 matching lines @@
   class StubMajorKeyField: public BitField<int,
       kStubMajorKeyFirstBit, kStubMajorKeyBits> {};  // NOLINT
 
   // KindSpecificFlags2 layout (FUNCTION)
   class BackEdgeTableOffsetField: public BitField<int,
       kIsCrankshaftedBit + 1, 29> {};  // NOLINT
   class BackEdgesPatchedForOSRField: public BitField<bool,
       kIsCrankshaftedBit + 1 + 29, 1> {};  // NOLINT
 
   // Signed field cannot be encoded using the BitField class.
-  static const int kArgumentsCountShift = 17;
+  static const int kArgumentsCountShift = 18;
   static const int kArgumentsCountMask = ~((1 << kArgumentsCountShift) - 1);
   static const int kArgumentsBits =
       PlatformSmiTagging::kSmiValueSize - Code::kArgumentsCountShift + 1;
   static const int kMaxArguments = (1 << kArgumentsBits) - 1;
 
   // ICs can use either argument count or ExtendedExtraIC, since their storage
   // overlaps.
   STATIC_ASSERT(ExtraICStateField::kShift +
                 ExtraICStateField::kSize + kArgumentsBits ==
                 ExtendedExtraICStateField::kShift +
@@ skipping 4955 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_