MIPS: Sharing of descriptor arrays.

src/mips/macro-assembler-mips.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 1382 matching lines @@
 
   void ClampDoubleToUint8(Register result_reg,
                           DoubleRegister input_reg,
                           DoubleRegister temp_double_reg);
 
 
   void LoadInstanceDescriptors(Register map,
                                Register descriptors,
                                Register scratch);
   void EnumLength(Register dst, Register map);
+  void NumberOfOwnDescriptors(Register dst, Register map);
 
+  template<typename Field>
+  void DecodeField(Register reg) {
+    static const int shift = Field::kShift;
+    static const int mask = (Field::kMask >> shift) << kSmiTagSize;
+    srl(reg, reg, shift);
+    And(reg, reg, Operand(mask));
+  }
 
   // Activation support.
   void EnterFrame(StackFrame::Type type);
   void LeaveFrame(StackFrame::Type type);
 
   // Patch the relocated value (lui/ori pair).
   void PatchRelocatedValue(Register li_location,
                            Register scratch,
                            Register new_value);
   // Get the relocatad value (loaded data) from the lui/ori pair.
@@ skipping 122 matching lines @@
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_