Emulate MLS on pre-ARMv6T2. Cleaned up thumbee vs. thumb2 confusion.

src/arm/macro-assembler-arm.h

 // Copyright 2012 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_MACRO_ASSEMBLER_ARM_H_
 #define V8_ARM_MACRO_ASSEMBLER_ARM_H_
 
 #include "src/assembler.h"
 #include "src/frames.h"
 #include "src/globals.h"
@@ skipping 99 matching lines @@
 
   void Ret(int drop, Condition cond = al);
 
   // Swap two registers.  If the scratch register is omitted then a slightly
   // less efficient form using xor instead of mov is emitted.
   void Swap(Register reg1,
             Register reg2,
             Register scratch = no_reg,
             Condition cond = al);
 
-
+  void Mls(Register dst, Register src1, Register src2, Register srcA,
+           Condition cond = al);
   void And(Register dst, Register src1, const Operand& src2,
            Condition cond = al);
   void Ubfx(Register dst, Register src, int lsb, int width,
             Condition cond = al);
   void Sbfx(Register dst, Register src, int lsb, int width,
             Condition cond = al);
   // The scratch register is not used for ARMv7.
   // scratch can be the same register as src (in which case it is trashed), but
   // not the same as dst.
   void Bfi(Register dst,
@@ skipping 1482 matching lines @@
 #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_ARM_MACRO_ASSEMBLER_ARM_H_