MIPS64: Fix hidden bug in relocations for j and jal.

src/mips64/constants-mips64.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_MIPS_CONSTANTS_H_
 #define  V8_MIPS_CONSTANTS_H_
 
 // UNIMPLEMENTED_ macro for MIPS.
 #ifdef DEBUG
 #define UNIMPLEMENTED_MIPS()                                                  \
@@ skipping 264 matching lines @@
 const int  kSaFieldMask  = ((1 << kSaBits) - 1) << kSaShift;
 const int  kFunctionFieldMask = ((1 << kFunctionBits) - 1) << kFunctionShift;
 // Misc masks.
 const int  kHiMask       =   0xffff << 16;
 const int  kLoMask       =   0xffff;
 const int  kSignMask     =   0x80000000;
 const int  kJumpAddrMask = (1 << (kImm26Bits + kImmFieldShift)) - 1;
 const int64_t  kHi16MaskOf64 =   (int64_t)0xffff << 48;
 const int64_t  kSe16MaskOf64 =   (int64_t)0xffff << 32;
 const int64_t  kTh16MaskOf64 =   (int64_t)0xffff << 16;
+const int32_t kJalRawMark = 0x00000000;
+const int32_t kJRawMark = 0xf0000000;
 
 // ----- MIPS Opcodes and Function Fields.
 // We use this presentation to stay close to the table representation in
 // MIPS32 Architecture For Programmers, Volume II: The MIPS32 Instruction Set.
 enum Opcode {
   SPECIAL = 0 << kOpcodeShift,
   REGIMM = 1 << kOpcodeShift,
 
   J = ((0 << 3) + 2) << kOpcodeShift,
   JAL = ((0 << 3) + 3) << kOpcodeShift,
@@ skipping 773 matching lines @@
 // TODO(plind): below should be based on kPointerSize
 // TODO(plind): find all usages and remove the needless instructions for n64.
 const int kCArgsSlotsSize = kCArgSlotCount * Instruction::kInstrSize * 2;
 
 const int kInvalidStackOffset = -1;
 const int kBranchReturnOffset = 2 * Instruction::kInstrSize;
 
 } }   // namespace v8::internal
 
 #endif    // #ifndef V8_MIPS_CONSTANTS_H_