Merge "ART: Allow to compile interpret-only mips64 files"

8 files changed, 1598 insertions, 0 deletions

diff --git a/compiler/utils/assembler.cc b/compiler/utils/assembler.cc
index 6834512..5340dd3 100644
--- a/compiler/utils/assembler.cc
+++ b/compiler/utils/assembler.cc
@@ -23,6 +23,7 @@
 #include "arm/assembler_thumb2.h"
 #include "arm64/assembler_arm64.h"
 #include "mips/assembler_mips.h"
+#include "mips64/assembler_mips64.h"
 #include "x86/assembler_x86.h"
 #include "x86_64/assembler_x86_64.h"
 #include "globals.h"
@@ -115,6 +116,8 @@ Assembler* Assembler::Create(InstructionSet instruction_set) {
       return new arm64::Arm64Assembler();
     case kMips:
       return new mips::MipsAssembler();
+    case kMips64:
+      return new mips64::Mips64Assembler();
     case kX86:
       return new x86::X86Assembler();
     case kX86_64:
diff --git a/compiler/utils/assembler.h b/compiler/utils/assembler.h
index 134dda4..923ecdb 100644
--- a/compiler/utils/assembler.h
+++ b/compiler/utils/assembler.h
@@ -47,6 +47,9 @@ namespace arm64 {
 namespace mips {
   class MipsAssembler;
 }
+namespace mips64 {
+  class Mips64Assembler;
+}
 namespace x86 {
   class X86Assembler;
 }
@@ -120,6 +123,7 @@ class Label {
   friend class arm::Thumb2Assembler;
   friend class arm64::Arm64Assembler;
   friend class mips::MipsAssembler;
+  friend class mips64::Mips64Assembler;
   friend class x86::X86Assembler;
   friend class x86_64::X86_64Assembler;
 
diff --git a/compiler/utils/managed_register.h b/compiler/utils/managed_register.h
index bfb2829..bb62bca 100644
--- a/compiler/utils/managed_register.h
+++ b/compiler/utils/managed_register.h
@@ -30,6 +30,9 @@ class Arm64ManagedRegister;
 namespace mips {
 class MipsManagedRegister;
 }
+namespace mips64 {
+class Mips64ManagedRegister;
+}
 
 namespace x86 {
 class X86ManagedRegister;
@@ -54,6 +57,7 @@ class ManagedRegister {
   arm::ArmManagedRegister AsArm() const;
   arm64::Arm64ManagedRegister AsArm64() const;
   mips::MipsManagedRegister AsMips() const;
+  mips64::Mips64ManagedRegister AsMips64() const;
   x86::X86ManagedRegister AsX86() const;
   x86_64::X86_64ManagedRegister AsX86_64() const;
 
diff --git a/compiler/utils/mips64/assembler_mips64.cc b/compiler/utils/mips64/assembler_mips64.cc
new file mode 100644
index 0000000..233ae7d
--- /dev/null
+++ b/compiler/utils/mips64/assembler_mips64.cc
@@ -0,0 +1,1036 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "assembler_mips64.h"
+
+#include "base/casts.h"
+#include "entrypoints/quick/quick_entrypoints.h"
+#include "memory_region.h"
+#include "thread.h"
+
+namespace art {
+namespace mips64 {
+
+void Mips64Assembler::Emit(int32_t value) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  buffer_.Emit<int32_t>(value);
+}
+
+void Mips64Assembler::EmitR(int opcode, GpuRegister rs, GpuRegister rt, GpuRegister rd,
+                            int shamt, int funct) {
+  CHECK_NE(rs, kNoGpuRegister);
+  CHECK_NE(rt, kNoGpuRegister);
+  CHECK_NE(rd, kNoGpuRegister);
+  int32_t encoding = opcode << kOpcodeShift |
+                     static_cast<int32_t>(rs) << kRsShift |
+                     static_cast<int32_t>(rt) << kRtShift |
+                     static_cast<int32_t>(rd) << kRdShift |
+                     shamt << kShamtShift |
+                     funct;
+  Emit(encoding);
+}
+
+void Mips64Assembler::EmitI(int opcode, GpuRegister rs, GpuRegister rt, uint16_t imm) {
+  CHECK_NE(rs, kNoGpuRegister);
+  CHECK_NE(rt, kNoGpuRegister);
+  int32_t encoding = opcode << kOpcodeShift |
+                     static_cast<int32_t>(rs) << kRsShift |
+                     static_cast<int32_t>(rt) << kRtShift |
+                     imm;
+  Emit(encoding);
+}
+
+void Mips64Assembler::EmitJ(int opcode, int address) {
+  int32_t encoding = opcode << kOpcodeShift |
+                     address;
+  Emit(encoding);
+}
+
+void Mips64Assembler::EmitFR(int opcode, int fmt, FpuRegister ft, FpuRegister fs, FpuRegister fd,
+int funct) {
+  CHECK_NE(ft, kNoFpuRegister);
+  CHECK_NE(fs, kNoFpuRegister);
+  CHECK_NE(fd, kNoFpuRegister);
+  int32_t encoding = opcode << kOpcodeShift |
+                     fmt << kFmtShift |
+                     static_cast<int32_t>(ft) << kFtShift |
+                     static_cast<int32_t>(fs) << kFsShift |
+                     static_cast<int32_t>(fd) << kFdShift |
+                     funct;
+  Emit(encoding);
+}
+
+void Mips64Assembler::EmitFI(int opcode, int fmt, FpuRegister rt, uint16_t imm) {
+  CHECK_NE(rt, kNoFpuRegister);
+  int32_t encoding = opcode << kOpcodeShift |
+                     fmt << kFmtShift |
+                     static_cast<int32_t>(rt) << kRtShift |
+                     imm;
+  Emit(encoding);
+}
+
+void Mips64Assembler::EmitBranch(GpuRegister rt, GpuRegister rs, Label* label, bool equal) {
+  int offset;
+  if (label->IsBound()) {
+    offset = label->Position() - buffer_.Size();
+  } else {
+    // Use the offset field of the branch instruction for linking the sites.
+    offset = label->position_;
+    label->LinkTo(buffer_.Size());
+  }
+  if (equal) {
+    Beq(rt, rs, (offset >> 2) & kBranchOffsetMask);
+  } else {
+    Bne(rt, rs, (offset >> 2) & kBranchOffsetMask);
+  }
+}
+
+void Mips64Assembler::EmitJump(Label* label, bool link) {
+  int offset;
+  if (label->IsBound()) {
+    offset = label->Position() - buffer_.Size();
+  } else {
+    // Use the offset field of the jump instruction for linking the sites.
+    offset = label->position_;
+    label->LinkTo(buffer_.Size());
+  }
+  if (link) {
+    Jal((offset >> 2) & kJumpOffsetMask);
+  } else {
+    J((offset >> 2) & kJumpOffsetMask);
+  }
+}
+
+int32_t Mips64Assembler::EncodeBranchOffset(int offset, int32_t inst, bool is_jump) {
+  CHECK_ALIGNED(offset, 4);
+  CHECK(IsInt(POPCOUNT(kBranchOffsetMask), offset)) << offset;
+
+  // Properly preserve only the bits supported in the instruction.
+  offset >>= 2;
+  if (is_jump) {
+    offset &= kJumpOffsetMask;
+    return (inst & ~kJumpOffsetMask) | offset;
+  } else {
+    offset &= kBranchOffsetMask;
+    return (inst & ~kBranchOffsetMask) | offset;
+  }
+}
+
+int Mips64Assembler::DecodeBranchOffset(int32_t inst, bool is_jump) {
+  // Sign-extend, then left-shift by 2.
+  if (is_jump) {
+    return (((inst & kJumpOffsetMask) << 6) >> 4);
+  } else {
+    return (((inst & kBranchOffsetMask) << 16) >> 14);
+  }
+}
+
+void Mips64Assembler::Bind(Label* label, bool is_jump) {
+  CHECK(!label->IsBound());
+  int bound_pc = buffer_.Size();
+  while (label->IsLinked()) {
+    int32_t position = label->Position();
+    int32_t next = buffer_.Load<int32_t>(position);
+    int32_t offset = is_jump ? bound_pc - position : bound_pc - position - 4;
+    int32_t encoded = Mips64Assembler::EncodeBranchOffset(offset, next, is_jump);
+    buffer_.Store<int32_t>(position, encoded);
+    label->position_ = Mips64Assembler::DecodeBranchOffset(next, is_jump);
+  }
+  label->BindTo(bound_pc);
+}
+
+void Mips64Assembler::Add(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x20);
+}
+
+void Mips64Assembler::Addi(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x8, rs, rt, imm16);
+}
+
+void Mips64Assembler::Addu(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x21);
+}
+
+void Mips64Assembler::Addiu(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x9, rs, rt, imm16);
+}
+
+void Mips64Assembler::Daddiu(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x19, rs, rt, imm16);
+}
+
+void Mips64Assembler::Sub(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x22);
+}
+
+void Mips64Assembler::Subu(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x23);
+}
+
+void Mips64Assembler::Mult(GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, static_cast<GpuRegister>(0), 0, 0x18);
+}
+
+void Mips64Assembler::Multu(GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, static_cast<GpuRegister>(0), 0, 0x19);
+}
+
+void Mips64Assembler::Div(GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, static_cast<GpuRegister>(0), 0, 0x1a);
+}
+
+void Mips64Assembler::Divu(GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, static_cast<GpuRegister>(0), 0, 0x1b);
+}
+
+void Mips64Assembler::And(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x24);
+}
+
+void Mips64Assembler::Andi(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0xc, rs, rt, imm16);
+}
+
+void Mips64Assembler::Or(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x25);
+}
+
+void Mips64Assembler::Ori(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0xd, rs, rt, imm16);
+}
+
+void Mips64Assembler::Xor(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x26);
+}
+
+void Mips64Assembler::Xori(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0xe, rs, rt, imm16);
+}
+
+void Mips64Assembler::Nor(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x27);
+}
+
+void Mips64Assembler::Sll(GpuRegister rd, GpuRegister rs, int shamt) {
+  EmitR(0, rs, static_cast<GpuRegister>(0), rd, shamt, 0x00);
+}
+
+void Mips64Assembler::Srl(GpuRegister rd, GpuRegister rs, int shamt) {
+  EmitR(0, rs, static_cast<GpuRegister>(0), rd, shamt, 0x02);
+}
+
+void Mips64Assembler::Sra(GpuRegister rd, GpuRegister rs, int shamt) {
+  EmitR(0, rs, static_cast<GpuRegister>(0), rd, shamt, 0x03);
+}
+
+void Mips64Assembler::Sllv(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x04);
+}
+
+void Mips64Assembler::Srlv(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x06);
+}
+
+void Mips64Assembler::Srav(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x07);
+}
+
+void Mips64Assembler::Lb(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x20, rs, rt, imm16);
+}
+
+void Mips64Assembler::Lh(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x21, rs, rt, imm16);
+}
+
+void Mips64Assembler::Lw(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x23, rs, rt, imm16);
+}
+
+void Mips64Assembler::Ld(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x37, rs, rt, imm16);
+}
+
+void Mips64Assembler::Lbu(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x24, rs, rt, imm16);
+}
+
+void Mips64Assembler::Lhu(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x25, rs, rt, imm16);
+}
+
+void Mips64Assembler::Lui(GpuRegister rt, uint16_t imm16) {
+  EmitI(0xf, static_cast<GpuRegister>(0), rt, imm16);
+}
+
+void Mips64Assembler::Mfhi(GpuRegister rd) {
+  EmitR(0, static_cast<GpuRegister>(0), static_cast<GpuRegister>(0), rd, 0, 0x10);
+}
+
+void Mips64Assembler::Mflo(GpuRegister rd) {
+  EmitR(0, static_cast<GpuRegister>(0), static_cast<GpuRegister>(0), rd, 0, 0x12);
+}
+
+void Mips64Assembler::Sb(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x28, rs, rt, imm16);
+}
+
+void Mips64Assembler::Sh(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x29, rs, rt, imm16);
+}
+
+void Mips64Assembler::Sw(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x2b, rs, rt, imm16);
+}
+
+void Mips64Assembler::Sd(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x3f, rs, rt, imm16);
+}
+
+void Mips64Assembler::Slt(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x2a);
+}
+
+void Mips64Assembler::Sltu(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  EmitR(0, rs, rt, rd, 0, 0x2b);
+}
+
+void Mips64Assembler::Slti(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0xa, rs, rt, imm16);
+}
+
+void Mips64Assembler::Sltiu(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0xb, rs, rt, imm16);
+}
+
+void Mips64Assembler::Beq(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x4, rs, rt, imm16);
+  Nop();
+}
+
+void Mips64Assembler::Bne(GpuRegister rt, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x5, rs, rt, imm16);
+  Nop();
+}
+
+void Mips64Assembler::J(uint32_t address) {
+  EmitJ(0x2, address);
+  Nop();
+}
+
+void Mips64Assembler::Jal(uint32_t address) {
+  EmitJ(0x2, address);
+  Nop();
+}
+
+void Mips64Assembler::Jr(GpuRegister rs) {
+  EmitR(0, rs, static_cast<GpuRegister>(0), static_cast<GpuRegister>(0), 0, 0x09);  // Jalr zero, rs
+  Nop();
+}
+
+void Mips64Assembler::Jalr(GpuRegister rs) {
+  EmitR(0, rs, static_cast<GpuRegister>(0), RA, 0, 0x09);
+  Nop();
+}
+
+void Mips64Assembler::AddS(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x10, ft, fs, fd, 0x0);
+}
+
+void Mips64Assembler::SubS(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x10, ft, fs, fd, 0x1);
+}
+
+void Mips64Assembler::MulS(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x10, ft, fs, fd, 0x2);
+}
+
+void Mips64Assembler::DivS(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x10, ft, fs, fd, 0x3);
+}
+
+void Mips64Assembler::AddD(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x11, static_cast<FpuRegister>(ft), static_cast<FpuRegister>(fs),
+         static_cast<FpuRegister>(fd), 0x0);
+}
+
+void Mips64Assembler::SubD(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x11, static_cast<FpuRegister>(ft), static_cast<FpuRegister>(fs),
+         static_cast<FpuRegister>(fd), 0x1);
+}
+
+void Mips64Assembler::MulD(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x11, static_cast<FpuRegister>(ft), static_cast<FpuRegister>(fs),
+         static_cast<FpuRegister>(fd), 0x2);
+}
+
+void Mips64Assembler::DivD(FpuRegister fd, FpuRegister fs, FpuRegister ft) {
+  EmitFR(0x11, 0x11, static_cast<FpuRegister>(ft), static_cast<FpuRegister>(fs),
+         static_cast<FpuRegister>(fd), 0x3);
+}
+
+void Mips64Assembler::MovS(FpuRegister fd, FpuRegister fs) {
+  EmitFR(0x11, 0x10, static_cast<FpuRegister>(0), fs, fd, 0x6);
+}
+
+void Mips64Assembler::MovD(FpuRegister fd, FpuRegister fs) {
+  EmitFR(0x11, 0x11, static_cast<FpuRegister>(0), static_cast<FpuRegister>(fs),
+         static_cast<FpuRegister>(fd), 0x6);
+}
+
+void Mips64Assembler::Mfc1(GpuRegister rt, FpuRegister fs) {
+  EmitFR(0x11, 0x00, static_cast<FpuRegister>(rt), fs, static_cast<FpuRegister>(0), 0x0);
+}
+
+void Mips64Assembler::Mtc1(FpuRegister ft, GpuRegister rs) {
+  EmitFR(0x11, 0x04, ft, static_cast<FpuRegister>(rs), static_cast<FpuRegister>(0), 0x0);
+}
+
+void Mips64Assembler::Lwc1(FpuRegister ft, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x31, rs, static_cast<GpuRegister>(ft), imm16);
+}
+
+void Mips64Assembler::Ldc1(FpuRegister ft, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x35, rs, static_cast<GpuRegister>(ft), imm16);
+}
+
+void Mips64Assembler::Swc1(FpuRegister ft, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x39, rs, static_cast<GpuRegister>(ft), imm16);
+}
+
+void Mips64Assembler::Sdc1(FpuRegister ft, GpuRegister rs, uint16_t imm16) {
+  EmitI(0x3d, rs, static_cast<GpuRegister>(ft), imm16);
+}
+
+void Mips64Assembler::Break() {
+  EmitR(0, static_cast<GpuRegister>(0), static_cast<GpuRegister>(0),
+        static_cast<GpuRegister>(0), 0, 0xD);
+}
+
+void Mips64Assembler::Nop() {
+  EmitR(0x0, static_cast<GpuRegister>(0), static_cast<GpuRegister>(0),
+        static_cast<GpuRegister>(0), 0, 0x0);
+}
+
+void Mips64Assembler::Move(GpuRegister rt, GpuRegister rs) {
+  EmitI(0x19, rs, rt, 0);   // Daddiu
+}
+
+void Mips64Assembler::Clear(GpuRegister rt) {
+  EmitR(0, static_cast<GpuRegister>(0), static_cast<GpuRegister>(0), rt, 0, 0x20);
+}
+
+void Mips64Assembler::Not(GpuRegister rt, GpuRegister rs) {
+  EmitR(0, static_cast<GpuRegister>(0), rs, rt, 0, 0x27);
+}
+
+void Mips64Assembler::Mul(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  Mult(rs, rt);
+  Mflo(rd);
+}
+
+void Mips64Assembler::Div(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  Div(rs, rt);
+  Mflo(rd);
+}
+
+void Mips64Assembler::Rem(GpuRegister rd, GpuRegister rs, GpuRegister rt) {
+  Div(rs, rt);
+  Mfhi(rd);
+}
+
+void Mips64Assembler::AddConstant64(GpuRegister rt, GpuRegister rs, int32_t value) {
+  CHECK((value >= -32768) && (value <= 32766));
+  Daddiu(rt, rs, value);
+}
+
+void Mips64Assembler::LoadImmediate64(GpuRegister rt, int32_t value) {
+  CHECK((value >= -32768) && (value <= 32766));
+  Daddiu(rt, ZERO, value);
+}
+
+void Mips64Assembler::LoadFromOffset(LoadOperandType type, GpuRegister reg, GpuRegister base,
+                                     int32_t offset) {
+  switch (type) {
+    case kLoadSignedByte:
+      Lb(reg, base, offset);
+      break;
+    case kLoadUnsignedByte:
+      Lbu(reg, base, offset);
+      break;
+    case kLoadSignedHalfword:
+      Lh(reg, base, offset);
+      break;
+    case kLoadUnsignedHalfword:
+      Lhu(reg, base, offset);
+      break;
+    case kLoadWord:
+      Lw(reg, base, offset);
+      break;
+    case kLoadDoubleword:
+      // TODO: alignment issues ???
+      Ld(reg, base, offset);
+      break;
+    default:
+      LOG(FATAL) << "UNREACHABLE";
+  }
+}
+
+void Mips64Assembler::LoadFpuFromOffset(LoadOperandType type, FpuRegister reg, GpuRegister base,
+                                        int32_t offset) {
+  CHECK((offset >= -32768) && (offset <= 32766));
+  switch (type) {
+    case kLoadWord:
+      Lwc1(reg, base, offset);
+      break;
+    case kLoadDoubleword:
+      // TODO: alignment issues ???
+      Ldc1(reg, base, offset);
+      break;
+    default:
+      LOG(FATAL) << "UNREACHABLE";
+  }
+}
+
+void Mips64Assembler::EmitLoad(ManagedRegister m_dst, GpuRegister src_register, int32_t src_offset,
+                               size_t size) {
+  Mips64ManagedRegister dst = m_dst.AsMips64();
+  if (dst.IsNoRegister()) {
+    CHECK_EQ(0u, size) << dst;
+  } else if (dst.IsGpuRegister()) {
+    if (size == 4) {
+      CHECK_EQ(4u, size) << dst;
+      LoadFromOffset(kLoadWord, dst.AsGpuRegister(), src_register, src_offset);
+    } else if (size == 8) {
+      CHECK_EQ(8u, size) << dst;
+      LoadFromOffset(kLoadDoubleword, dst.AsGpuRegister(), src_register, src_offset);
+    } else {
+      UNIMPLEMENTED(FATAL) << "We only support Load() of size 4 and 8";
+    }
+  } else if (dst.IsFpuRegister()) {
+    if (size == 4) {
+      CHECK_EQ(4u, size) << dst;
+      LoadFpuFromOffset(kLoadWord, dst.AsFpuRegister(), src_register, src_offset);
+    } else if (size == 8) {
+      CHECK_EQ(8u, size) << dst;
+      LoadFpuFromOffset(kLoadDoubleword, dst.AsFpuRegister(), src_register, src_offset);
+    } else {
+      UNIMPLEMENTED(FATAL) << "We only support Load() of size 4 and 8";
+    }
+  }
+}
+
+void Mips64Assembler::StoreToOffset(StoreOperandType type, GpuRegister reg, GpuRegister base,
+                                    int32_t offset) {
+  switch (type) {
+    case kStoreByte:
+      Sb(reg, base, offset);
+      break;
+    case kStoreHalfword:
+      Sh(reg, base, offset);
+      break;
+    case kStoreWord:
+      Sw(reg, base, offset);
+      break;
+    case kStoreDoubleword:
+      // TODO: alignment issues ???
+      Sd(reg, base, offset);
+      break;
+    default:
+      LOG(FATAL) << "UNREACHABLE";
+  }
+}
+
+void Mips64Assembler::StoreFpuToOffset(StoreOperandType type, FpuRegister reg, GpuRegister base,
+                                       int32_t offset) {
+  switch (type) {
+    case kStoreWord:
+      Swc1(reg, base, offset);
+      break;
+    case kStoreDoubleword:
+      Sdc1(reg, base, offset);
+      break;
+    default:
+      LOG(FATAL) << "UNREACHABLE";
+  }
+}
+
+constexpr size_t kFramePointerSize = 8;
+
+void Mips64Assembler::BuildFrame(size_t frame_size, ManagedRegister method_reg,
+                                 const std::vector<ManagedRegister>& callee_save_regs,
+                                 const ManagedRegisterEntrySpills& entry_spills) {
+  CHECK_ALIGNED(frame_size, kStackAlignment);
+
+  // Increase frame to required size.
+  IncreaseFrameSize(frame_size);
+
+  // Push callee saves and return address
+  int stack_offset = frame_size - kFramePointerSize;
+  StoreToOffset(kStoreDoubleword, RA, SP, stack_offset);
+  for (int i = callee_save_regs.size() - 1; i >= 0; --i) {
+    stack_offset -= kFramePointerSize;
+    GpuRegister reg = callee_save_regs.at(i).AsMips64().AsGpuRegister();
+    StoreToOffset(kStoreDoubleword, reg, SP, stack_offset);
+  }
+
+  // Write out Method*.
+  StoreToOffset(kStoreWord, method_reg.AsMips64().AsGpuRegister(), SP, 0);
+
+  // Write out entry spills.
+  int32_t offset = frame_size + sizeof(StackReference<mirror::ArtMethod>);
+  for (size_t i = 0; i < entry_spills.size(); ++i) {
+    Mips64ManagedRegister reg = entry_spills.at(i).AsMips64();
+    ManagedRegisterSpill spill = entry_spills.at(i);
+    int32_t size = spill.getSize();
+    if (reg.IsNoRegister()) {
+      // only increment stack offset.
+      offset += size;
+    } else if (reg.IsFpuRegister()) {
+      StoreFpuToOffset((size == 4) ? kStoreWord : kStoreDoubleword, reg.AsFpuRegister(), SP, offset);
+      offset += size;
+    } else if (reg.IsGpuRegister()) {
+      StoreToOffset((size == 4) ? kStoreWord : kStoreDoubleword, reg.AsGpuRegister(), SP, offset);
+      offset += size;
+    }
+  }
+}
+
+void Mips64Assembler::RemoveFrame(size_t frame_size,
+                                  const std::vector<ManagedRegister>& callee_save_regs) {
+  CHECK_ALIGNED(frame_size, kStackAlignment);
+
+  // Pop callee saves and return address
+  int stack_offset = frame_size - (callee_save_regs.size() * kFramePointerSize) - kFramePointerSize;
+  for (size_t i = 0; i < callee_save_regs.size(); ++i) {
+    GpuRegister reg = callee_save_regs.at(i).AsMips64().AsGpuRegister();
+    LoadFromOffset(kLoadDoubleword, reg, SP, stack_offset);
+    stack_offset += kFramePointerSize;
+  }
+  LoadFromOffset(kLoadDoubleword, RA, SP, stack_offset);
+
+  // Decrease frame to required size.
+  DecreaseFrameSize(frame_size);
+
+  // Then jump to the return address.
+  Jr(RA);
+}
+
+void Mips64Assembler::IncreaseFrameSize(size_t adjust) {
+  CHECK_ALIGNED(adjust, kStackAlignment);
+  AddConstant64(SP, SP, -adjust);
+}
+
+void Mips64Assembler::DecreaseFrameSize(size_t adjust) {
+  CHECK_ALIGNED(adjust, kStackAlignment);
+  AddConstant64(SP, SP, adjust);
+}
+
+void Mips64Assembler::Store(FrameOffset dest, ManagedRegister msrc, size_t size) {
+  Mips64ManagedRegister src = msrc.AsMips64();
+  if (src.IsNoRegister()) {
+    CHECK_EQ(0u, size);
+  } else if (src.IsGpuRegister()) {
+    CHECK(size == 4 || size == 8) << size;
+    if (size == 8) {
+      StoreToOffset(kStoreDoubleword, src.AsGpuRegister(), SP, dest.Int32Value());
+    } else if (size == 4) {
+      StoreToOffset(kStoreWord, src.AsGpuRegister(), SP, dest.Int32Value());
+    } else {
+      UNIMPLEMENTED(FATAL) << "We only support Store() of size 4 and 8";
+    }
+  } else if (src.IsFpuRegister()) {
+    CHECK(size == 4 || size == 8) << size;
+    if (size == 8) {
+      StoreFpuToOffset(kStoreDoubleword, src.AsFpuRegister(), SP, dest.Int32Value());
+    } else if (size == 4) {
+      StoreFpuToOffset(kStoreWord, src.AsFpuRegister(), SP, dest.Int32Value());
+    } else {
+      UNIMPLEMENTED(FATAL) << "We only support Store() of size 4 and 8";
+    }
+  }
+}
+
+void Mips64Assembler::StoreRef(FrameOffset dest, ManagedRegister msrc) {
+  Mips64ManagedRegister src = msrc.AsMips64();
+  CHECK(src.IsGpuRegister());
+  StoreToOffset(kStoreWord, src.AsGpuRegister(), SP, dest.Int32Value());
+}
+
+void Mips64Assembler::StoreRawPtr(FrameOffset dest, ManagedRegister msrc) {
+  Mips64ManagedRegister src = msrc.AsMips64();
+  CHECK(src.IsGpuRegister());
+  StoreToOffset(kStoreDoubleword, src.AsGpuRegister(), SP, dest.Int32Value());
+}
+
+void Mips64Assembler::StoreImmediateToFrame(FrameOffset dest, uint32_t imm,
+                                            ManagedRegister mscratch) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  LoadImmediate64(scratch.AsGpuRegister(), imm);
+  StoreToOffset(kStoreWord, scratch.AsGpuRegister(), SP, dest.Int32Value());
+}
+
+void Mips64Assembler::StoreImmediateToThread64(ThreadOffset<8> dest, uint32_t imm,
+                                               ManagedRegister mscratch) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  LoadImmediate64(scratch.AsGpuRegister(), imm);
+  StoreToOffset(kStoreDoubleword, scratch.AsGpuRegister(), S1, dest.Int32Value());
+}
+
+void Mips64Assembler::StoreStackOffsetToThread64(ThreadOffset<8> thr_offs,
+                                                 FrameOffset fr_offs,
+                                                 ManagedRegister mscratch) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  AddConstant64(scratch.AsGpuRegister(), SP, fr_offs.Int32Value());
+  StoreToOffset(kStoreDoubleword, scratch.AsGpuRegister(), S1, thr_offs.Int32Value());
+}
+
+void Mips64Assembler::StoreStackPointerToThread64(ThreadOffset<8> thr_offs) {
+  StoreToOffset(kStoreDoubleword, SP, S1, thr_offs.Int32Value());
+}
+
+void Mips64Assembler::StoreSpanning(FrameOffset dest, ManagedRegister msrc,
+                                    FrameOffset in_off, ManagedRegister mscratch) {
+  Mips64ManagedRegister src = msrc.AsMips64();
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  StoreToOffset(kStoreDoubleword, src.AsGpuRegister(), SP, dest.Int32Value());
+  LoadFromOffset(kLoadDoubleword, scratch.AsGpuRegister(), SP, in_off.Int32Value());
+  StoreToOffset(kStoreDoubleword, scratch.AsGpuRegister(), SP, dest.Int32Value() + 8);
+}
+
+void Mips64Assembler::Load(ManagedRegister mdest, FrameOffset src, size_t size) {
+  return EmitLoad(mdest, SP, src.Int32Value(), size);
+}
+
+void Mips64Assembler::LoadFromThread64(ManagedRegister mdest, ThreadOffset<8> src, size_t size) {
+  return EmitLoad(mdest, S1, src.Int32Value(), size);
+}
+
+void Mips64Assembler::LoadRef(ManagedRegister mdest, FrameOffset src) {
+  Mips64ManagedRegister dest = mdest.AsMips64();
+  CHECK(dest.IsGpuRegister());
+  LoadFromOffset(kLoadWord, dest.AsGpuRegister(), SP, src.Int32Value());
+}
+
+void Mips64Assembler::LoadRef(ManagedRegister mdest, ManagedRegister base,
+                            MemberOffset offs) {
+  Mips64ManagedRegister dest = mdest.AsMips64();
+  CHECK(dest.IsGpuRegister() && dest.IsGpuRegister());
+  LoadFromOffset(kLoadWord, dest.AsGpuRegister(),
+                 base.AsMips64().AsGpuRegister(), offs.Int32Value());
+  if (kPoisonHeapReferences) {
+    Subu(dest.AsGpuRegister(), ZERO, dest.AsGpuRegister());
+  }
+}
+
+void Mips64Assembler::LoadRawPtr(ManagedRegister mdest, ManagedRegister base,
+                               Offset offs) {
+  Mips64ManagedRegister dest = mdest.AsMips64();
+  CHECK(dest.IsGpuRegister() && dest.IsGpuRegister()) << dest;
+  LoadFromOffset(kLoadDoubleword, dest.AsGpuRegister(),
+                 base.AsMips64().AsGpuRegister(), offs.Int32Value());
+}
+
+void Mips64Assembler::LoadRawPtrFromThread64(ManagedRegister mdest,
+                                         ThreadOffset<8> offs) {
+  Mips64ManagedRegister dest = mdest.AsMips64();
+  CHECK(dest.IsGpuRegister());
+  LoadFromOffset(kLoadDoubleword, dest.AsGpuRegister(), S1, offs.Int32Value());
+}
+
+void Mips64Assembler::SignExtend(ManagedRegister /*mreg*/, size_t /*size*/) {
+  UNIMPLEMENTED(FATAL) << "no sign extension necessary for mips";
+}
+
+void Mips64Assembler::ZeroExtend(ManagedRegister /*mreg*/, size_t /*size*/) {
+  UNIMPLEMENTED(FATAL) << "no zero extension necessary for mips";
+}
+
+void Mips64Assembler::Move(ManagedRegister mdest, ManagedRegister msrc, size_t size) {
+  Mips64ManagedRegister dest = mdest.AsMips64();
+  Mips64ManagedRegister src = msrc.AsMips64();
+  if (!dest.Equals(src)) {
+    if (dest.IsGpuRegister()) {
+      CHECK(src.IsGpuRegister()) << src;
+      Move(dest.AsGpuRegister(), src.AsGpuRegister());
+    } else if (dest.IsFpuRegister()) {
+      CHECK(src.IsFpuRegister()) << src;
+      if (size == 4) {
+        MovS(dest.AsFpuRegister(), src.AsFpuRegister());
+      } else if (size == 8) {
+        MovD(dest.AsFpuRegister(), src.AsFpuRegister());
+      } else {
+        UNIMPLEMENTED(FATAL) << "We only support Copy() of size 4 and 8";
+      }
+    }
+  }
+}
+
+void Mips64Assembler::CopyRef(FrameOffset dest, FrameOffset src,
+                              ManagedRegister mscratch) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  LoadFromOffset(kLoadWord, scratch.AsGpuRegister(), SP, src.Int32Value());
+  StoreToOffset(kStoreWord, scratch.AsGpuRegister(), SP, dest.Int32Value());
+}
+
+void Mips64Assembler::CopyRawPtrFromThread64(FrameOffset fr_offs,
+                                             ThreadOffset<8> thr_offs,
+                                             ManagedRegister mscratch) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  LoadFromOffset(kLoadDoubleword, scratch.AsGpuRegister(), S1, thr_offs.Int32Value());
+  StoreToOffset(kStoreDoubleword, scratch.AsGpuRegister(), SP, fr_offs.Int32Value());
+}
+
+void Mips64Assembler::CopyRawPtrToThread64(ThreadOffset<8> thr_offs,
+                                           FrameOffset fr_offs,
+                                           ManagedRegister mscratch) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  LoadFromOffset(kLoadDoubleword, scratch.AsGpuRegister(),
+                 SP, fr_offs.Int32Value());
+  StoreToOffset(kStoreDoubleword, scratch.AsGpuRegister(),
+                S1, thr_offs.Int32Value());
+}
+
+void Mips64Assembler::Copy(FrameOffset dest, FrameOffset src,
+                           ManagedRegister mscratch, size_t size) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  CHECK(size == 4 || size == 8) << size;
+  if (size == 4) {
+    LoadFromOffset(kLoadWord, scratch.AsGpuRegister(), SP, src.Int32Value());
+    StoreToOffset(kStoreWord, scratch.AsGpuRegister(), SP, dest.Int32Value());
+  } else if (size == 8) {
+    LoadFromOffset(kLoadDoubleword, scratch.AsGpuRegister(), SP, src.Int32Value());
+    StoreToOffset(kStoreDoubleword, scratch.AsGpuRegister(), SP, dest.Int32Value());
+  } else {
+    UNIMPLEMENTED(FATAL) << "We only support Copy() of size 4 and 8";
+  }
+}
+
+void Mips64Assembler::Copy(FrameOffset dest, ManagedRegister src_base, Offset src_offset,
+                         ManagedRegister mscratch, size_t size) {
+  GpuRegister scratch = mscratch.AsMips64().AsGpuRegister();
+  CHECK(size == 4 || size == 8) << size;
+  if (size == 4) {
+    LoadFromOffset(kLoadWord, scratch, src_base.AsMips64().AsGpuRegister(),
+                   src_offset.Int32Value());
+    StoreToOffset(kStoreWord, scratch, SP, dest.Int32Value());
+  } else if (size == 8) {
+    LoadFromOffset(kLoadDoubleword, scratch, src_base.AsMips64().AsGpuRegister(),
+                   src_offset.Int32Value());
+    StoreToOffset(kStoreDoubleword, scratch, SP, dest.Int32Value());
+  } else {
+    UNIMPLEMENTED(FATAL) << "We only support Copy() of size 4 and 8";
+  }
+}
+
+void Mips64Assembler::Copy(ManagedRegister dest_base, Offset dest_offset, FrameOffset src,
+                         ManagedRegister mscratch, size_t size) {
+  GpuRegister scratch = mscratch.AsMips64().AsGpuRegister();
+  CHECK(size == 4 || size == 8) << size;
+  if (size == 4) {
+    LoadFromOffset(kLoadWord, scratch, SP, src.Int32Value());
+    StoreToOffset(kStoreWord, scratch, dest_base.AsMips64().AsGpuRegister(),
+                  dest_offset.Int32Value());
+  } else if (size == 8) {
+    LoadFromOffset(kLoadDoubleword, scratch, SP, src.Int32Value());
+    StoreToOffset(kStoreDoubleword, scratch, dest_base.AsMips64().AsGpuRegister(),
+                  dest_offset.Int32Value());
+  } else {
+    UNIMPLEMENTED(FATAL) << "We only support Copy() of size 4 and 8";
+  }
+}
+
+void Mips64Assembler::Copy(FrameOffset /*dest*/, FrameOffset /*src_base*/, Offset /*src_offset*/,
+                         ManagedRegister /*mscratch*/, size_t /*size*/) {
+  UNIMPLEMENTED(FATAL) << "no mips64 implementation";
+}
+
+void Mips64Assembler::Copy(ManagedRegister dest, Offset dest_offset,
+                         ManagedRegister src, Offset src_offset,
+                         ManagedRegister mscratch, size_t size) {
+  GpuRegister scratch = mscratch.AsMips64().AsGpuRegister();
+  CHECK(size == 4 || size == 8) << size;
+  if (size == 4) {
+    LoadFromOffset(kLoadWord, scratch, src.AsMips64().AsGpuRegister(), src_offset.Int32Value());
+    StoreToOffset(kStoreWord, scratch, dest.AsMips64().AsGpuRegister(), dest_offset.Int32Value());
+  } else if (size == 8) {
+    LoadFromOffset(kLoadDoubleword, scratch, src.AsMips64().AsGpuRegister(),
+                   src_offset.Int32Value());
+    StoreToOffset(kStoreDoubleword, scratch, dest.AsMips64().AsGpuRegister(),
+                  dest_offset.Int32Value());
+  } else {
+    UNIMPLEMENTED(FATAL) << "We only support Copy() of size 4 and 8";
+  }
+}
+
+void Mips64Assembler::Copy(FrameOffset /*dest*/, Offset /*dest_offset*/, FrameOffset /*src*/, Offset
+/*src_offset*/,
+                         ManagedRegister /*mscratch*/, size_t /*size*/) {
+  UNIMPLEMENTED(FATAL) << "no mips64 implementation";
+}
+
+void Mips64Assembler::MemoryBarrier(ManagedRegister) {
+  UNIMPLEMENTED(FATAL) << "no mips64 implementation";
+}
+
+void Mips64Assembler::CreateHandleScopeEntry(ManagedRegister mout_reg,
+                                    FrameOffset handle_scope_offset,
+                                    ManagedRegister min_reg, bool null_allowed) {
+  Mips64ManagedRegister out_reg = mout_reg.AsMips64();
+  Mips64ManagedRegister in_reg = min_reg.AsMips64();
+  CHECK(in_reg.IsNoRegister() || in_reg.IsGpuRegister()) << in_reg;
+  CHECK(out_reg.IsGpuRegister()) << out_reg;
+  if (null_allowed) {
+    Label null_arg;
+    // Null values get a handle scope entry value of 0.  Otherwise, the handle scope entry is
+    // the address in the handle scope holding the reference.
+    // e.g. out_reg = (handle == 0) ? 0 : (SP+handle_offset)
+    if (in_reg.IsNoRegister()) {
+      LoadFromOffset(kLoadWord, out_reg.AsGpuRegister(),
+                     SP, handle_scope_offset.Int32Value());
+      in_reg = out_reg;
+    }
+    if (!out_reg.Equals(in_reg)) {
+      LoadImmediate64(out_reg.AsGpuRegister(), 0);
+    }
+    EmitBranch(in_reg.AsGpuRegister(), ZERO, &null_arg, true);
+    AddConstant64(out_reg.AsGpuRegister(), SP, handle_scope_offset.Int32Value());
+    Bind(&null_arg, false);
+  } else {
+    AddConstant64(out_reg.AsGpuRegister(), SP, handle_scope_offset.Int32Value());
+  }
+}
+
+void Mips64Assembler::CreateHandleScopeEntry(FrameOffset out_off,
+                                    FrameOffset handle_scope_offset,
+                                    ManagedRegister mscratch,
+                                    bool null_allowed) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  if (null_allowed) {
+    Label null_arg;
+    LoadFromOffset(kLoadWord, scratch.AsGpuRegister(), SP,
+                   handle_scope_offset.Int32Value());
+    // Null values get a handle scope entry value of 0.  Otherwise, the handle scope entry is
+    // the address in the handle scope holding the reference.
+    // e.g. scratch = (scratch == 0) ? 0 : (SP+handle_scope_offset)
+    EmitBranch(scratch.AsGpuRegister(), ZERO, &null_arg, true);
+    AddConstant64(scratch.AsGpuRegister(), SP, handle_scope_offset.Int32Value());
+    Bind(&null_arg, false);
+  } else {
+    AddConstant64(scratch.AsGpuRegister(), SP, handle_scope_offset.Int32Value());
+  }
+  StoreToOffset(kStoreDoubleword, scratch.AsGpuRegister(), SP, out_off.Int32Value());
+}
+
+// Given a handle scope entry, load the associated reference.
+void Mips64Assembler::LoadReferenceFromHandleScope(ManagedRegister mout_reg,
+                                          ManagedRegister min_reg) {
+  Mips64ManagedRegister out_reg = mout_reg.AsMips64();
+  Mips64ManagedRegister in_reg = min_reg.AsMips64();
+  CHECK(out_reg.IsGpuRegister()) << out_reg;
+  CHECK(in_reg.IsGpuRegister()) << in_reg;
+  Label null_arg;
+  if (!out_reg.Equals(in_reg)) {
+    LoadImmediate64(out_reg.AsGpuRegister(), 0);
+  }
+  EmitBranch(in_reg.AsGpuRegister(), ZERO, &null_arg, true);
+  LoadFromOffset(kLoadDoubleword, out_reg.AsGpuRegister(),
+                 in_reg.AsGpuRegister(), 0);
+  Bind(&null_arg, false);
+}
+
+void Mips64Assembler::VerifyObject(ManagedRegister /*src*/, bool /*could_be_null*/) {
+  // TODO: not validating references
+}
+
+void Mips64Assembler::VerifyObject(FrameOffset /*src*/, bool /*could_be_null*/) {
+  // TODO: not validating references
+}
+
+void Mips64Assembler::Call(ManagedRegister mbase, Offset offset, ManagedRegister mscratch) {
+  Mips64ManagedRegister base = mbase.AsMips64();
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(base.IsGpuRegister()) << base;
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  LoadFromOffset(kLoadDoubleword, scratch.AsGpuRegister(),
+                 base.AsGpuRegister(), offset.Int32Value());
+  Jalr(scratch.AsGpuRegister());
+  // TODO: place reference map on call
+}
+
+void Mips64Assembler::Call(FrameOffset base, Offset offset, ManagedRegister mscratch) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  CHECK(scratch.IsGpuRegister()) << scratch;
+  // Call *(*(SP + base) + offset)
+  LoadFromOffset(kLoadWord, scratch.AsGpuRegister(),
+                 SP, base.Int32Value());
+  LoadFromOffset(kLoadDoubleword, scratch.AsGpuRegister(),
+                 scratch.AsGpuRegister(), offset.Int32Value());
+  Jalr(scratch.AsGpuRegister());
+  // TODO: place reference map on call
+}
+
+void Mips64Assembler::CallFromThread64(ThreadOffset<8> /*offset*/, ManagedRegister /*mscratch*/) {
+  UNIMPLEMENTED(FATAL) << "no mips64 implementation";
+}
+
+void Mips64Assembler::GetCurrentThread(ManagedRegister tr) {
+  Move(tr.AsMips64().AsGpuRegister(), S1);
+}
+
+void Mips64Assembler::GetCurrentThread(FrameOffset offset,
+                                     ManagedRegister /*mscratch*/) {
+  StoreToOffset(kStoreDoubleword, S1, SP, offset.Int32Value());
+}
+
+void Mips64Assembler::ExceptionPoll(ManagedRegister mscratch, size_t stack_adjust) {
+  Mips64ManagedRegister scratch = mscratch.AsMips64();
+  Mips64ExceptionSlowPath* slow = new Mips64ExceptionSlowPath(scratch, stack_adjust);
+  buffer_.EnqueueSlowPath(slow);
+  LoadFromOffset(kLoadDoubleword, scratch.AsGpuRegister(),
+                 S1, Thread::ExceptionOffset<8>().Int32Value());
+  EmitBranch(scratch.AsGpuRegister(), ZERO, slow->Entry(), false);
+}
+
+void Mips64ExceptionSlowPath::Emit(Assembler* sasm) {
+  Mips64Assembler* sp_asm = down_cast<Mips64Assembler*>(sasm);
+#define __ sp_asm->
+  __ Bind(&entry_, false);
+  if (stack_adjust_ != 0) {  // Fix up the frame.
+    __ DecreaseFrameSize(stack_adjust_);
+  }
+  // Pass exception object as argument
+  // Don't care about preserving A0 as this call won't return
+  __ Move(A0, scratch_.AsGpuRegister());
+  // Set up call to Thread::Current()->pDeliverException
+  __ LoadFromOffset(kLoadDoubleword, T9, S1,
+                    QUICK_ENTRYPOINT_OFFSET(4, pDeliverException).Int32Value());
+  __ Jr(T9);
+  // Call never returns
+  __ Break();
+#undef __
+}
+
+}  // namespace mips64
+}  // namespace art
diff --git a/compiler/utils/mips64/assembler_mips64.h b/compiler/utils/mips64/assembler_mips64.h
new file mode 100644
index 0000000..36e74d7
--- /dev/null
+++ b/compiler/utils/mips64/assembler_mips64.h
@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_COMPILER_UTILS_MIPS64_ASSEMBLER_MIPS64_H_
+#define ART_COMPILER_UTILS_MIPS64_ASSEMBLER_MIPS64_H_
+
+#include <vector>
+
+#include "base/macros.h"
+#include "constants_mips64.h"
+#include "globals.h"
+#include "managed_register_mips64.h"
+#include "utils/assembler.h"
+#include "offsets.h"
+#include "utils.h"
+
+namespace art {
+namespace mips64 {
+
+enum LoadOperandType {
+  kLoadSignedByte,
+  kLoadUnsignedByte,
+  kLoadSignedHalfword,
+  kLoadUnsignedHalfword,
+  kLoadWord,
+  kLoadDoubleword
+};
+
+enum StoreOperandType {
+  kStoreByte,
+  kStoreHalfword,
+  kStoreWord,
+  kStoreDoubleword
+};
+
+class Mips64Assembler FINAL : public Assembler {
+ public:
+  Mips64Assembler() {}
+  virtual ~Mips64Assembler() {}
+
+  // Emit Machine Instructions.
+  void Add(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Addi(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Addu(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Addiu(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Daddiu(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Sub(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Subu(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Mult(GpuRegister rs, GpuRegister rt);
+  void Multu(GpuRegister rs, GpuRegister rt);
+  void Div(GpuRegister rs, GpuRegister rt);
+  void Divu(GpuRegister rs, GpuRegister rt);
+
+  void And(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Andi(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Or(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Ori(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Xor(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Xori(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Nor(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+
+  void Sll(GpuRegister rd, GpuRegister rs, int shamt);
+  void Srl(GpuRegister rd, GpuRegister rs, int shamt);
+  void Sra(GpuRegister rd, GpuRegister rs, int shamt);
+  void Sllv(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Srlv(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Srav(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+
+  void Lb(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Lh(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Lw(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Ld(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Lbu(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Lhu(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Lui(GpuRegister rt, uint16_t imm16);
+  void Mfhi(GpuRegister rd);
+  void Mflo(GpuRegister rd);
+
+  void Sb(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Sh(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Sw(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Sd(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+
+  void Slt(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Sltu(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Slti(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Sltiu(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+
+  void Beq(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void Bne(GpuRegister rt, GpuRegister rs, uint16_t imm16);
+  void J(uint32_t address);
+  void Jal(uint32_t address);
+  void Jr(GpuRegister rs);
+  void Jalr(GpuRegister rs);
+
+  void AddS(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void SubS(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void MulS(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void DivS(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void AddD(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void SubD(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void MulD(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void DivD(FpuRegister fd, FpuRegister fs, FpuRegister ft);
+  void MovS(FpuRegister fd, FpuRegister fs);
+  void MovD(FpuRegister fd, FpuRegister fs);
+
+  void Mfc1(GpuRegister rt, FpuRegister fs);
+  void Mtc1(FpuRegister ft, GpuRegister rs);
+  void Lwc1(FpuRegister ft, GpuRegister rs, uint16_t imm16);
+  void Ldc1(FpuRegister ft, GpuRegister rs, uint16_t imm16);
+  void Swc1(FpuRegister ft, GpuRegister rs, uint16_t imm16);
+  void Sdc1(FpuRegister ft, GpuRegister rs, uint16_t imm16);
+
+  void Break();
+  void Nop();
+  void Move(GpuRegister rt, GpuRegister rs);
+  void Clear(GpuRegister rt);
+  void Not(GpuRegister rt, GpuRegister rs);
+  void Mul(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Div(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+  void Rem(GpuRegister rd, GpuRegister rs, GpuRegister rt);
+
+  void AddConstant64(GpuRegister rt, GpuRegister rs, int32_t value);
+  void LoadImmediate64(GpuRegister rt, int32_t value);
+
+  void EmitLoad(ManagedRegister m_dst, GpuRegister src_register, int32_t src_offset, size_t size);
+  void LoadFromOffset(LoadOperandType type, GpuRegister reg, GpuRegister base, int32_t offset);
+  void LoadFpuFromOffset(LoadOperandType type, FpuRegister reg, GpuRegister base, int32_t offset);
+  void StoreToOffset(StoreOperandType type, GpuRegister reg, GpuRegister base, int32_t offset);
+  void StoreFpuToOffset(StoreOperandType type, FpuRegister reg, GpuRegister base, int32_t offset);
+
+  // Emit data (e.g. encoded instruction or immediate) to the instruction stream.
+  void Emit(int32_t value);
+  void EmitBranch(GpuRegister rt, GpuRegister rs, Label* label, bool equal);
+  void EmitJump(Label* label, bool link);
+  void Bind(Label* label, bool is_jump);
+
+  //
+  // Overridden common assembler high-level functionality
+  //
+
+  // Emit code that will create an activation on the stack
+  void BuildFrame(size_t frame_size, ManagedRegister method_reg,
+                  const std::vector<ManagedRegister>& callee_save_regs,
+                  const ManagedRegisterEntrySpills& entry_spills) OVERRIDE;
+
+  // Emit code that will remove an activation from the stack
+  void RemoveFrame(size_t frame_size,
+                   const std::vector<ManagedRegister>& callee_save_regs) OVERRIDE;
+
+  void IncreaseFrameSize(size_t adjust) OVERRIDE;
+  void DecreaseFrameSize(size_t adjust) OVERRIDE;
+
+  // Store routines
+  void Store(FrameOffset offs, ManagedRegister msrc, size_t size) OVERRIDE;
+  void StoreRef(FrameOffset dest, ManagedRegister msrc) OVERRIDE;
+  void StoreRawPtr(FrameOffset dest, ManagedRegister msrc) OVERRIDE;
+
+  void StoreImmediateToFrame(FrameOffset dest, uint32_t imm, ManagedRegister mscratch) OVERRIDE;
+
+  void StoreImmediateToThread64(ThreadOffset<8> dest, uint32_t imm,
+                                ManagedRegister mscratch) OVERRIDE;
+
+  void StoreStackOffsetToThread64(ThreadOffset<8> thr_offs, FrameOffset fr_offs,
+                                  ManagedRegister mscratch) OVERRIDE;
+
+  void StoreStackPointerToThread64(ThreadOffset<8> thr_offs) OVERRIDE;
+
+  void StoreSpanning(FrameOffset dest, ManagedRegister msrc, FrameOffset in_off,
+                     ManagedRegister mscratch) OVERRIDE;
+
+  // Load routines
+  void Load(ManagedRegister mdest, FrameOffset src, size_t size) OVERRIDE;
+
+  void LoadFromThread64(ManagedRegister mdest, ThreadOffset<8> src, size_t size) OVERRIDE;
+
+  void LoadRef(ManagedRegister dest, FrameOffset  src) OVERRIDE;
+
+  void LoadRef(ManagedRegister mdest, ManagedRegister base, MemberOffset offs) OVERRIDE;
+
+  void LoadRawPtr(ManagedRegister mdest, ManagedRegister base, Offset offs) OVERRIDE;
+
+  void LoadRawPtrFromThread64(ManagedRegister mdest, ThreadOffset<8> offs) OVERRIDE;
+
+  // Copying routines
+  void Move(ManagedRegister mdest, ManagedRegister msrc, size_t size) OVERRIDE;
+
+  void CopyRawPtrFromThread64(FrameOffset fr_offs, ThreadOffset<8> thr_offs,
+                              ManagedRegister mscratch) OVERRIDE;
+
+  void CopyRawPtrToThread64(ThreadOffset<8> thr_offs, FrameOffset fr_offs,
+                            ManagedRegister mscratch) OVERRIDE;
+
+  void CopyRef(FrameOffset dest, FrameOffset src, ManagedRegister mscratch) OVERRIDE;
+
+  void Copy(FrameOffset dest, FrameOffset src, ManagedRegister mscratch, size_t size) OVERRIDE;
+
+  void Copy(FrameOffset dest, ManagedRegister src_base, Offset src_offset, ManagedRegister mscratch,
+            size_t size) OVERRIDE;
+
+  void Copy(ManagedRegister dest_base, Offset dest_offset, FrameOffset src,
+            ManagedRegister mscratch, size_t size) OVERRIDE;
+
+  void Copy(FrameOffset dest, FrameOffset src_base, Offset src_offset, ManagedRegister mscratch,
+            size_t size) OVERRIDE;
+
+  void Copy(ManagedRegister dest, Offset dest_offset, ManagedRegister src, Offset src_offset,
+            ManagedRegister mscratch, size_t size) OVERRIDE;
+
+  void Copy(FrameOffset dest, Offset dest_offset, FrameOffset src, Offset src_offset,
+            ManagedRegister mscratch, size_t size) OVERRIDE;
+
+  void MemoryBarrier(ManagedRegister) OVERRIDE;
+
+  // Sign extension
+  void SignExtend(ManagedRegister mreg, size_t size) OVERRIDE;
+
+  // Zero extension
+  void ZeroExtend(ManagedRegister mreg, size_t size) OVERRIDE;
+
+  // Exploit fast access in managed code to Thread::Current()
+  void GetCurrentThread(ManagedRegister tr) OVERRIDE;
+  void GetCurrentThread(FrameOffset dest_offset, ManagedRegister mscratch) OVERRIDE;
+
+  // Set up out_reg to hold a Object** into the handle scope, or to be NULL if the
+  // value is null and null_allowed. in_reg holds a possibly stale reference
+  // that can be used to avoid loading the handle scope entry to see if the value is
+  // NULL.
+  void CreateHandleScopeEntry(ManagedRegister out_reg, FrameOffset handlescope_offset,
+                              ManagedRegister in_reg, bool null_allowed) OVERRIDE;
+
+  // Set up out_off to hold a Object** into the handle scope, or to be NULL if the
+  // value is null and null_allowed.
+  void CreateHandleScopeEntry(FrameOffset out_off, FrameOffset handlescope_offset, ManagedRegister
+                              mscratch, bool null_allowed) OVERRIDE;
+
+  // src holds a handle scope entry (Object**) load this into dst
+  void LoadReferenceFromHandleScope(ManagedRegister dst, ManagedRegister src) OVERRIDE;
+
+  // Heap::VerifyObject on src. In some cases (such as a reference to this) we
+  // know that src may not be null.
+  void VerifyObject(ManagedRegister src, bool could_be_null) OVERRIDE;
+  void VerifyObject(FrameOffset src, bool could_be_null) OVERRIDE;
+
+  // Call to address held at [base+offset]
+  void Call(ManagedRegister base, Offset offset, ManagedRegister mscratch) OVERRIDE;
+  void Call(FrameOffset base, Offset offset, ManagedRegister mscratch) OVERRIDE;
+  void CallFromThread64(ThreadOffset<8> offset, ManagedRegister mscratch) OVERRIDE;
+
+  // Generate code to check if Thread::Current()->exception_ is non-null
+  // and branch to a ExceptionSlowPath if it is.
+  void ExceptionPoll(ManagedRegister mscratch, size_t stack_adjust) OVERRIDE;
+
+ private:
+  void EmitR(int opcode, GpuRegister rs, GpuRegister rt, GpuRegister rd, int shamt, int funct);
+  void EmitI(int opcode, GpuRegister rs, GpuRegister rt, uint16_t imm);
+  void EmitJ(int opcode, int address);
+  void EmitFR(int opcode, int fmt, FpuRegister ft, FpuRegister fs, FpuRegister fd, int funct);
+  void EmitFI(int opcode, int fmt, FpuRegister rt, uint16_t imm);
+
+  int32_t EncodeBranchOffset(int offset, int32_t inst, bool is_jump);
+  int DecodeBranchOffset(int32_t inst, bool is_jump);
+
+  DISALLOW_COPY_AND_ASSIGN(Mips64Assembler);
+};
+
+// Slowpath entered when Thread::Current()->_exception is non-null
+class Mips64ExceptionSlowPath FINAL : public SlowPath {
+ public:
+  explicit Mips64ExceptionSlowPath(Mips64ManagedRegister scratch, size_t stack_adjust)
+      : scratch_(scratch), stack_adjust_(stack_adjust) {}
+  virtual void Emit(Assembler *sp_asm) OVERRIDE;
+ private:
+  const Mips64ManagedRegister scratch_;
+  const size_t stack_adjust_;
+};
+
+}  // namespace mips64
+}  // namespace art
+
+#endif  // ART_COMPILER_UTILS_MIPS64_ASSEMBLER_MIPS64_H_
diff --git a/compiler/utils/mips64/constants_mips64.h b/compiler/utils/mips64/constants_mips64.h
new file mode 100644
index 0000000..8b7697c
--- /dev/null
+++ b/compiler/utils/mips64/constants_mips64.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_
+#define ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_
+
+#include <iosfwd>
+
+#include "arch/mips64/registers_mips64.h"
+#include "base/logging.h"
+#include "base/macros.h"
+#include "globals.h"
+
+namespace art {
+namespace mips64 {
+
+// Constants used for the decoding or encoding of the individual fields of instructions.
+enum InstructionFields {
+  kOpcodeShift = 26,
+  kOpcodeBits = 6,
+  kRsShift = 21,
+  kRsBits = 5,
+  kRtShift = 16,
+  kRtBits = 5,
+  kRdShift = 11,
+  kRdBits = 5,
+  kShamtShift = 6,
+  kShamtBits = 5,
+  kFunctShift = 0,
+  kFunctBits = 6,
+
+  kFmtShift = 21,
+  kFmtBits = 5,
+  kFtShift = 16,
+  kFtBits = 5,
+  kFsShift = 11,
+  kFsBits = 5,
+  kFdShift = 6,
+  kFdBits = 5,
+
+  kBranchOffsetMask = 0x0000ffff,
+  kJumpOffsetMask = 0x03ffffff,
+};
+
+enum ScaleFactor {
+  TIMES_1 = 0,
+  TIMES_2 = 1,
+  TIMES_4 = 2,
+  TIMES_8 = 3
+};
+
+class Instr {
+ public:
+  static const uint32_t kBreakPointInstruction = 0x0000000D;
+
+  bool IsBreakPoint() {
+    return ((*reinterpret_cast<const uint32_t*>(this)) & 0xFC0000CF) == kBreakPointInstruction;
+  }
+
+  // Instructions are read out of a code stream. The only way to get a
+  // reference to an instruction is to convert a pointer. There is no way
+  // to allocate or create instances of class Instr.
+  // Use the At(pc) function to create references to Instr.
+  static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); }
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
+};
+
+}  // namespace mips64
+}  // namespace art
+
+#endif  // ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_
diff --git a/compiler/utils/mips64/managed_register_mips64.cc b/compiler/utils/mips64/managed_register_mips64.cc
new file mode 100644
index 0000000..dea396e
--- /dev/null
+++ b/compiler/utils/mips64/managed_register_mips64.cc
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "managed_register_mips64.h"
+
+#include "globals.h"
+
+namespace art {
+namespace mips64 {
+
+bool Mips64ManagedRegister::Overlaps(const Mips64ManagedRegister& other) const {
+  if (IsNoRegister() || other.IsNoRegister()) return false;
+  CHECK(IsValidManagedRegister());
+  CHECK(other.IsValidManagedRegister());
+  if (Equals(other)) return true;
+  return false;
+}
+
+void Mips64ManagedRegister::Print(std::ostream& os) const {
+  if (!IsValidManagedRegister()) {
+    os << "No Register";
+  } else if (IsGpuRegister()) {
+    os << "GPU: " << static_cast<int>(AsGpuRegister());
+  } else if (IsFpuRegister()) {
+     os << "FpuRegister: " << static_cast<int>(AsFpuRegister());
+  } else {
+    os << "??: " << RegId();
+  }
+}
+
+std::ostream& operator<<(std::ostream& os, const Mips64ManagedRegister& reg) {
+  reg.Print(os);
+  return os;
+}
+
+}  // namespace mips64
+}  // namespace art
diff --git a/compiler/utils/mips64/managed_register_mips64.h b/compiler/utils/mips64/managed_register_mips64.h
new file mode 100644
index 0000000..924a928
--- /dev/null
+++ b/compiler/utils/mips64/managed_register_mips64.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_COMPILER_UTILS_MIPS64_MANAGED_REGISTER_MIPS64_H_
+#define ART_COMPILER_UTILS_MIPS64_MANAGED_REGISTER_MIPS64_H_
+
+#include "constants_mips64.h"
+#include "utils/managed_register.h"
+
+namespace art {
+namespace mips64 {
+
+const int kNumberOfGpuRegIds = kNumberOfGpuRegisters;
+const int kNumberOfGpuAllocIds = kNumberOfGpuRegisters;
+
+const int kNumberOfFpuRegIds = kNumberOfFpuRegisters;
+const int kNumberOfFpuAllocIds = kNumberOfFpuRegisters;
+
+const int kNumberOfRegIds = kNumberOfGpuRegIds + kNumberOfFpuRegIds;
+const int kNumberOfAllocIds = kNumberOfGpuAllocIds + kNumberOfFpuAllocIds;
+
+// An instance of class 'ManagedRegister' represents a single GPU register (enum
+// Register) or a double precision FP register (enum FpuRegister)
+// 'ManagedRegister::NoRegister()' provides an invalid register.
+// There is a one-to-one mapping between ManagedRegister and register id.
+class Mips64ManagedRegister : public ManagedRegister {
+ public:
+  GpuRegister AsGpuRegister() const {
+    CHECK(IsGpuRegister());
+    return static_cast<GpuRegister>(id_);
+  }
+
+  FpuRegister AsFpuRegister() const {
+    CHECK(IsFpuRegister());
+    return static_cast<FpuRegister>(id_ - kNumberOfGpuRegIds);
+  }
+
+  bool IsGpuRegister() const {
+    CHECK(IsValidManagedRegister());
+    return (0 <= id_) && (id_ < kNumberOfGpuRegIds);
+  }
+
+  bool IsFpuRegister() const {
+    CHECK(IsValidManagedRegister());
+    const int test = id_ - kNumberOfGpuRegIds;
+    return (0 <= test) && (test < kNumberOfFpuRegIds);
+  }
+
+  void Print(std::ostream& os) const;
+
+  // Returns true if the two managed-registers ('this' and 'other') overlap.
+  // Either managed-register may be the NoRegister. If both are the NoRegister
+  // then false is returned.
+  bool Overlaps(const Mips64ManagedRegister& other) const;
+
+  static Mips64ManagedRegister FromGpuRegister(GpuRegister r) {
+    CHECK_NE(r, kNoGpuRegister);
+    return FromRegId(r);
+  }
+
+  static Mips64ManagedRegister FromFpuRegister(FpuRegister r) {
+    CHECK_NE(r, kNoFpuRegister);
+    return FromRegId(r + kNumberOfGpuRegIds);
+  }
+
+ private:
+  bool IsValidManagedRegister() const {
+    return (0 <= id_) && (id_ < kNumberOfRegIds);
+  }
+
+  int RegId() const {
+    CHECK(!IsNoRegister());
+    return id_;
+  }
+
+  int AllocId() const {
+    CHECK(IsValidManagedRegister());
+    CHECK_LT(id_, kNumberOfAllocIds);
+    return id_;
+  }
+
+  int AllocIdLow() const;
+  int AllocIdHigh() const;
+
+  friend class ManagedRegister;
+
+  explicit Mips64ManagedRegister(int reg_id) : ManagedRegister(reg_id) {}
+
+  static Mips64ManagedRegister FromRegId(int reg_id) {
+    Mips64ManagedRegister reg(reg_id);
+    CHECK(reg.IsValidManagedRegister());
+    return reg;
+  }
+};
+
+std::ostream& operator<<(std::ostream& os, const Mips64ManagedRegister& reg);
+
+}  // namespace mips64
+
+inline mips64::Mips64ManagedRegister ManagedRegister::AsMips64() const {
+  mips64::Mips64ManagedRegister reg(id_);
+  CHECK(reg.IsNoRegister() || reg.IsValidManagedRegister());
+  return reg;
+}
+
+}  // namespace art
+
+#endif  // ART_COMPILER_UTILS_MIPS64_MANAGED_REGISTER_MIPS64_H_