Add support for Embedded Constant Pools for PPC and Arm

src/ppc/macro-assembler-ppc.h

 // Copyright 2014 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_PPC_MACRO_ASSEMBLER_PPC_H_
 #define V8_PPC_MACRO_ASSEMBLER_PPC_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/frames.h"
@@ skipping 84 matching lines @@
 // MacroAssembler implements a collection of frequently used macros.
 class MacroAssembler : public Assembler {
  public:
   // The isolate parameter can be NULL if the macro assembler should
   // not use isolate-dependent functionality. In this case, it's the
   // responsibility of the caller to never invoke such function on the
   // macro assembler.
   MacroAssembler(Isolate* isolate, void* buffer, int size);
 
 
-  // Returns the size of a call in instructions.
+  // Returns the size of a call in instructions. Note, the value returned is
+  // only valid as long as no entries are added to the constant pool between
+  // checking the call size and emitting the actual call.
   static int CallSize(Register target);
   int CallSize(Address target, RelocInfo::Mode rmode, Condition cond = al);
   static int CallSizeNotPredictableCodeSize(Address target,
                                             RelocInfo::Mode rmode,
                                             Condition cond = al);
 
   // Jump, Call, and Ret pseudo instructions implementing inter-working.
   void Jump(Register target);
   void JumpToJSEntry(Register target);
   void Jump(Address target, RelocInfo::Mode rmode, Condition cond = al,
@@ skipping 1237 matching lines @@
                                                 Label* failure);
 
   void JumpIfNotUniqueNameInstanceType(Register reg, Label* not_unique_name);
 
   void EmitSeqStringSetCharCheck(Register string, Register index,
                                  Register value, uint32_t encoding_mask);
 
   // ---------------------------------------------------------------------------
   // Patching helpers.
 
-  // Retrieve/patch the relocated value (lis/ori pair).
+  // Retrieve/patch the relocated value (lis/ori pair or constant pool load).
   void GetRelocatedValue(Register location, Register result, Register scratch);
   void SetRelocatedValue(Register location, Register scratch,
                          Register new_value);
 
   void ClampUint8(Register output_reg, Register input_reg);
 
   // Saturate a value into 8-bit unsigned integer
   //   if input_value < 0, output_value is 0
   //   if input_value > 255, output_value is 255
   //   otherwise output_value is the (int)input_value (round to nearest)
@@ skipping 68 matching lines @@
     TestJSArrayForAllocationMemento(receiver_reg, scratch_reg,
                                     &no_memento_found);
     beq(memento_found);
     bind(&no_memento_found);
   }
 
   // Jumps to found label if a prototype map has dictionary elements.
   void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0,
                                         Register scratch1, Label* found);
 
+  // Loads the constant pool pointer (kConstantPoolRegister).
+  void LoadConstantPoolPointerRegisterFromCodeTargetAddress(
+      Register code_target_address);
+  void LoadConstantPoolPointerRegister();
+  void LoadConstantPoolPointerRegister(Register base, int code_entry_delta = 0);
+
+  void AbortConstantPoolBuilding() {
+#ifdef DEBUG
+    // Avoid DCHECK(!is_linked()) failure in ~Label()
+    bind(ConstantPoolPosition());
+#endif
+  }
+
  private:
   static const int kSmiShift = kSmiTagSize + kSmiShiftSize;
 
   void CallCFunctionHelper(Register function, int num_reg_arguments,
                            int num_double_arguments);
 
   void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al,
             CRegister cr = cr7);
 
   // Helper functions for generating invokes.
@@ skipping 87 matching lines @@
 #define ACCESS_MASM(masm)    \
   masm->stop(__FILE_LINE__); \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 }
 }  // namespace v8::internal
 
 #endif  // V8_PPC_MACRO_ASSEMBLER_PPC_H_