Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 812 insertions, 0 deletions

diff --git a/js/src/jit/mips64/MacroAssembler-mips64.h b/js/src/jit/mips64/MacroAssembler-mips64.h
new file mode 100644
index 0000000000..b6581a761a
--- /dev/null
+++ b/js/src/jit/mips64/MacroAssembler-mips64.h
@@ -0,0 +1,812 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_mips64_MacroAssembler_mips64_h
+#define jit_mips64_MacroAssembler_mips64_h
+
+#include "jit/mips-shared/MacroAssembler-mips-shared.h"
+#include "jit/MoveResolver.h"
+#include "vm/BytecodeUtil.h"
+#include "wasm/WasmTypes.h"
+
+namespace js {
+namespace jit {
+
+enum LiFlags {
+  Li64 = 0,
+  Li48 = 1,
+};
+
+struct ImmShiftedTag : public ImmWord {
+  explicit ImmShiftedTag(JSValueShiftedTag shtag) : ImmWord((uintptr_t)shtag) {}
+
+  explicit ImmShiftedTag(JSValueType type)
+      : ImmWord(uintptr_t(JSValueShiftedTag(JSVAL_TYPE_TO_SHIFTED_TAG(type)))) {
+  }
+};
+
+struct ImmTag : public Imm32 {
+  ImmTag(JSValueTag mask) : Imm32(int32_t(mask)) {}
+};
+
+static constexpr ValueOperand JSReturnOperand{JSReturnReg};
+
+static const int defaultShift = 3;
+static_assert(1 << defaultShift == sizeof(JS::Value),
+              "The defaultShift is wrong");
+
+// See documentation for ScratchTagScope and ScratchTagScopeRelease in
+// MacroAssembler-x64.h.
+
+class ScratchTagScope : public SecondScratchRegisterScope {
+ public:
+  ScratchTagScope(MacroAssembler& masm, const ValueOperand&)
+      : SecondScratchRegisterScope(masm) {}
+};
+
+class ScratchTagScopeRelease {
+  ScratchTagScope* ts_;
+
+ public:
+  explicit ScratchTagScopeRelease(ScratchTagScope* ts) : ts_(ts) {
+    ts_->release();
+  }
+  ~ScratchTagScopeRelease() { ts_->reacquire(); }
+};
+
+class MacroAssemblerMIPS64 : public MacroAssemblerMIPSShared {
+ public:
+  using MacroAssemblerMIPSShared::ma_b;
+  using MacroAssemblerMIPSShared::ma_cmp_set;
+  using MacroAssemblerMIPSShared::ma_ld;
+  using MacroAssemblerMIPSShared::ma_li;
+  using MacroAssemblerMIPSShared::ma_load;
+  using MacroAssemblerMIPSShared::ma_ls;
+  using MacroAssemblerMIPSShared::ma_sd;
+  using MacroAssemblerMIPSShared::ma_ss;
+  using MacroAssemblerMIPSShared::ma_store;
+  using MacroAssemblerMIPSShared::ma_subTestOverflow;
+
+  void ma_li(Register dest, CodeLabel* label);
+  void ma_li(Register dest, ImmWord imm);
+  void ma_liPatchable(Register dest, ImmPtr imm);
+  void ma_liPatchable(Register dest, ImmWord imm, LiFlags flags = Li48);
+
+  // Negate
+  void ma_dnegu(Register rd, Register rs);
+
+  // Shift operations
+  void ma_dsll(Register rd, Register rt, Imm32 shift);
+  void ma_dsrl(Register rd, Register rt, Imm32 shift);
+  void ma_dsra(Register rd, Register rt, Imm32 shift);
+  void ma_dror(Register rd, Register rt, Imm32 shift);
+  void ma_drol(Register rd, Register rt, Imm32 shift);
+
+  void ma_dsll(Register rd, Register rt, Register shift);
+  void ma_dsrl(Register rd, Register rt, Register shift);
+  void ma_dsra(Register rd, Register rt, Register shift);
+  void ma_dror(Register rd, Register rt, Register shift);
+  void ma_drol(Register rd, Register rt, Register shift);
+
+  void ma_dins(Register rt, Register rs, Imm32 pos, Imm32 size);
+  void ma_dext(Register rt, Register rs, Imm32 pos, Imm32 size);
+
+  // doubleword swap bytes
+  void ma_dsbh(Register rd, Register rt);
+  void ma_dshd(Register rd, Register rt);
+
+  void ma_dctz(Register rd, Register rs);
+
+  // load
+  void ma_load(Register dest, Address address, LoadStoreSize size = SizeWord,
+               LoadStoreExtension extension = SignExtend);
+
+  // store
+  void ma_store(Register data, Address address, LoadStoreSize size = SizeWord,
+                LoadStoreExtension extension = SignExtend);
+
+  // arithmetic based ops
+  // add
+  void ma_daddu(Register rd, Register rs, Imm32 imm);
+  void ma_daddu(Register rd, Register rs);
+  void ma_daddu(Register rd, Imm32 imm);
+  void ma_addTestOverflow(Register rd, Register rs, Register rt,
+                          Label* overflow);
+  void ma_addTestOverflow(Register rd, Register rs, Imm32 imm, Label* overflow);
+
+  // subtract
+  void ma_dsubu(Register rd, Register rs, Imm32 imm);
+  void ma_dsubu(Register rd, Register rs);
+  void ma_dsubu(Register rd, Imm32 imm);
+  void ma_subTestOverflow(Register rd, Register rs, Register rt,
+                          Label* overflow);
+
+  // multiplies.  For now, there are only few that we care about.
+  void ma_dmult(Register rs, Imm32 imm);
+
+  // stack
+  void ma_pop(Register r);
+  void ma_push(Register r);
+
+  void branchWithCode(InstImm code, Label* label, JumpKind jumpKind);
+  // branches when done from within mips-specific code
+  void ma_b(Register lhs, ImmWord imm, Label* l, Condition c,
+            JumpKind jumpKind = LongJump);
+  void ma_b(Register lhs, Address addr, Label* l, Condition c,
+            JumpKind jumpKind = LongJump);
+  void ma_b(Address addr, Imm32 imm, Label* l, Condition c,
+            JumpKind jumpKind = LongJump);
+  void ma_b(Address addr, ImmGCPtr imm, Label* l, Condition c,
+            JumpKind jumpKind = LongJump);
+  void ma_b(Address addr, Register rhs, Label* l, Condition c,
+            JumpKind jumpKind = LongJump) {
+    MOZ_ASSERT(rhs != ScratchRegister);
+    ma_load(ScratchRegister, addr, SizeDouble);
+    ma_b(ScratchRegister, rhs, l, c, jumpKind);
+  }
+
+  void ma_bal(Label* l, DelaySlotFill delaySlotFill = FillDelaySlot);
+
+  // fp instructions
+  void ma_lid(FloatRegister dest, double value);
+
+  void ma_mv(FloatRegister src, ValueOperand dest);
+  void ma_mv(ValueOperand src, FloatRegister dest);
+
+  void ma_ls(FloatRegister ft, Address address);
+  void ma_ld(FloatRegister ft, Address address);
+  void ma_sd(FloatRegister ft, Address address);
+  void ma_ss(FloatRegister ft, Address address);
+
+  void ma_pop(FloatRegister f);
+  void ma_push(FloatRegister f);
+
+  void ma_cmp_set(Register dst, Register lhs, ImmWord imm, Condition c);
+  void ma_cmp_set(Register dst, Register lhs, ImmPtr imm, Condition c);
+
+  // These functions abstract the access to high part of the double precision
+  // float register. They are intended to work on both 32 bit and 64 bit
+  // floating point coprocessor.
+  void moveToDoubleHi(Register src, FloatRegister dest) { as_mthc1(src, dest); }
+  void moveFromDoubleHi(FloatRegister src, Register dest) {
+    as_mfhc1(dest, src);
+  }
+
+  void moveToDouble(Register src, FloatRegister dest) { as_dmtc1(src, dest); }
+  void moveFromDouble(FloatRegister src, Register dest) { as_dmfc1(dest, src); }
+};
+
+class MacroAssembler;
+
+class MacroAssemblerMIPS64Compat : public MacroAssemblerMIPS64 {
+ public:
+  using MacroAssemblerMIPS64::call;
+
+  MacroAssemblerMIPS64Compat() {}
+
+  void convertBoolToInt32(Register source, Register dest);
+  void convertInt32ToDouble(Register src, FloatRegister dest);
+  void convertInt32ToDouble(const Address& src, FloatRegister dest);
+  void convertInt32ToDouble(const BaseIndex& src, FloatRegister dest);
+  void convertUInt32ToDouble(Register src, FloatRegister dest);
+  void convertUInt32ToFloat32(Register src, FloatRegister dest);
+  void convertDoubleToFloat32(FloatRegister src, FloatRegister dest);
+  void convertDoubleToInt32(FloatRegister src, Register dest, Label* fail,
+                            bool negativeZeroCheck = true);
+  void convertFloat32ToInt32(FloatRegister src, Register dest, Label* fail,
+                             bool negativeZeroCheck = true);
+
+  void convertFloat32ToDouble(FloatRegister src, FloatRegister dest);
+  void convertInt32ToFloat32(Register src, FloatRegister dest);
+  void convertInt32ToFloat32(const Address& src, FloatRegister dest);
+
+  void movq(Register rs, Register rd);
+
+  void computeScaledAddress(const BaseIndex& address, Register dest);
+
+  void computeEffectiveAddress(const Address& address, Register dest) {
+    ma_daddu(dest, address.base, Imm32(address.offset));
+  }
+
+  void computeEffectiveAddress(const BaseIndex& address, Register dest);
+
+  void j(Label* dest) { ma_b(dest); }
+
+  void mov(Register src, Register dest) { as_ori(dest, src, 0); }
+  void mov(ImmWord imm, Register dest) { ma_li(dest, imm); }
+  void mov(ImmPtr imm, Register dest) {
+    mov(ImmWord(uintptr_t(imm.value)), dest);
+  }
+  void mov(CodeLabel* label, Register dest) { ma_li(dest, label); }
+  void mov(Register src, Address dest) { MOZ_CRASH("NYI-IC"); }
+  void mov(Address src, Register dest) { MOZ_CRASH("NYI-IC"); }
+
+  void writeDataRelocation(const Value& val) {
+    // Raw GC pointer relocations and Value relocations both end up in
+    // TraceOneDataRelocation.
+    if (val.isGCThing()) {
+      gc::Cell* cell = val.toGCThing();
+      if (cell && gc::IsInsideNursery(cell)) {
+        embedsNurseryPointers_ = true;
+      }
+      dataRelocations_.writeUnsigned(currentOffset());
+    }
+  }
+
+  void branch(JitCode* c) {
+    BufferOffset bo = m_buffer.nextOffset();
+    addPendingJump(bo, ImmPtr(c->raw()), RelocationKind::JITCODE);
+    ma_liPatchable(ScratchRegister, ImmPtr(c->raw()));
+    as_jr(ScratchRegister);
+    as_nop();
+  }
+  void branch(const Register reg) {
+    as_jr(reg);
+    as_nop();
+  }
+  void nop() { as_nop(); }
+  void ret() {
+    ma_pop(ra);
+    as_jr(ra);
+    as_nop();
+  }
+  inline void retn(Imm32 n);
+  void push(Imm32 imm) {
+    ma_li(ScratchRegister, imm);
+    ma_push(ScratchRegister);
+  }
+  void push(ImmWord imm) {
+    ma_li(ScratchRegister, imm);
+    ma_push(ScratchRegister);
+  }
+  void push(ImmGCPtr imm) {
+    ma_li(ScratchRegister, imm);
+    ma_push(ScratchRegister);
+  }
+  void push(const Address& address) {
+    loadPtr(address, ScratchRegister);
+    ma_push(ScratchRegister);
+  }
+  void push(Register reg) { ma_push(reg); }
+  void push(FloatRegister reg) { ma_push(reg); }
+  void pop(Register reg) { ma_pop(reg); }
+  void pop(FloatRegister reg) { ma_pop(reg); }
+
+  // Emit a branch that can be toggled to a non-operation. On MIPS64 we use
+  // "andi" instruction to toggle the branch.
+  // See ToggleToJmp(), ToggleToCmp().
+  CodeOffset toggledJump(Label* label);
+
+  // Emit a "jalr" or "nop" instruction. ToggleCall can be used to patch
+  // this instruction.
+  CodeOffset toggledCall(JitCode* target, bool enabled);
+
+  static size_t ToggledCallSize(uint8_t* code) {
+    // Six instructions used in: MacroAssemblerMIPS64Compat::toggledCall
+    return 6 * sizeof(uint32_t);
+  }
+
+  CodeOffset pushWithPatch(ImmWord imm) {
+    CodeOffset offset = movWithPatch(imm, ScratchRegister);
+    ma_push(ScratchRegister);
+    return offset;
+  }
+
+  CodeOffset movWithPatch(ImmWord imm, Register dest) {
+    CodeOffset offset = CodeOffset(currentOffset());
+    ma_liPatchable(dest, imm, Li64);
+    return offset;
+  }
+  CodeOffset movWithPatch(ImmPtr imm, Register dest) {
+    CodeOffset offset = CodeOffset(currentOffset());
+    ma_liPatchable(dest, imm);
+    return offset;
+  }
+
+  void writeCodePointer(CodeLabel* label) {
+    label->patchAt()->bind(currentOffset());
+    label->setLinkMode(CodeLabel::RawPointer);
+    m_buffer.ensureSpace(sizeof(void*));
+    writeInst(-1);
+    writeInst(-1);
+  }
+
+  void jump(Label* label) { ma_b(label); }
+  void jump(Register reg) {
+    as_jr(reg);
+    as_nop();
+  }
+  void jump(const Address& address) {
+    loadPtr(address, ScratchRegister);
+    as_jr(ScratchRegister);
+    as_nop();
+  }
+
+  void jump(JitCode* code) { branch(code); }
+
+  void jump(ImmPtr ptr) {
+    BufferOffset bo = m_buffer.nextOffset();
+    addPendingJump(bo, ptr, RelocationKind::HARDCODED);
+    ma_jump(ptr);
+  }
+
+  void jump(TrampolinePtr code) { jump(ImmPtr(code.value)); }
+
+  void splitTag(Register src, Register dest) {
+    ma_dsrl(dest, src, Imm32(JSVAL_TAG_SHIFT));
+  }
+
+  void splitTag(const ValueOperand& operand, Register dest) {
+    splitTag(operand.valueReg(), dest);
+  }
+
+  void splitTagForTest(const ValueOperand& value, ScratchTagScope& tag) {
+    splitTag(value, tag);
+  }
+
+  // unboxing code
+  void unboxNonDouble(const ValueOperand& operand, Register dest,
+                      JSValueType type) {
+    unboxNonDouble(operand.valueReg(), dest, type);
+  }
+
+  template <typename T>
+  void unboxNonDouble(T src, Register dest, JSValueType type) {
+    MOZ_ASSERT(type != JSVAL_TYPE_DOUBLE);
+    if (type == JSVAL_TYPE_INT32 || type == JSVAL_TYPE_BOOLEAN) {
+      load32(src, dest);
+      return;
+    }
+    loadPtr(src, dest);
+    unboxNonDouble(dest, dest, type);
+  }
+
+  void unboxNonDouble(Register src, Register dest, JSValueType type) {
+    MOZ_ASSERT(type != JSVAL_TYPE_DOUBLE);
+    if (type == JSVAL_TYPE_INT32 || type == JSVAL_TYPE_BOOLEAN) {
+      ma_sll(dest, src, Imm32(0));
+      return;
+    }
+    MOZ_ASSERT(ScratchRegister != src);
+    mov(ImmWord(JSVAL_TYPE_TO_SHIFTED_TAG(type)), ScratchRegister);
+    as_xor(dest, src, ScratchRegister);
+  }
+
+  template <typename T>
+  void unboxObjectOrNull(const T& src, Register dest) {
+    unboxNonDouble(src, dest, JSVAL_TYPE_OBJECT);
+    static_assert(JS::detail::ValueObjectOrNullBit ==
+                  (uint64_t(0x8) << JSVAL_TAG_SHIFT));
+    ma_dins(dest, zero, Imm32(JSVAL_TAG_SHIFT + 3), Imm32(1));
+  }
+
+  void unboxGCThingForGCBarrier(const Address& src, Register dest) {
+    loadPtr(src, dest);
+    ma_dext(dest, dest, Imm32(0), Imm32(JSVAL_TAG_SHIFT));
+  }
+  void unboxGCThingForGCBarrier(const ValueOperand& src, Register dest) {
+    ma_dext(dest, src.valueReg(), Imm32(0), Imm32(JSVAL_TAG_SHIFT));
+  }
+
+  void unboxInt32(const ValueOperand& operand, Register dest);
+  void unboxInt32(Register src, Register dest);
+  void unboxInt32(const Address& src, Register dest);
+  void unboxInt32(const BaseIndex& src, Register dest);
+  void unboxBoolean(const ValueOperand& operand, Register dest);
+  void unboxBoolean(Register src, Register dest);
+  void unboxBoolean(const Address& src, Register dest);
+  void unboxBoolean(const BaseIndex& src, Register dest);
+  void unboxDouble(const ValueOperand& operand, FloatRegister dest);
+  void unboxDouble(Register src, Register dest);
+  void unboxDouble(const Address& src, FloatRegister dest);
+  void unboxDouble(const BaseIndex& src, FloatRegister dest);
+  void unboxString(const ValueOperand& operand, Register dest);
+  void unboxString(Register src, Register dest);
+  void unboxString(const Address& src, Register dest);
+  void unboxSymbol(const ValueOperand& src, Register dest);
+  void unboxSymbol(Register src, Register dest);
+  void unboxSymbol(const Address& src, Register dest);
+  void unboxBigInt(const ValueOperand& operand, Register dest);
+  void unboxBigInt(Register src, Register dest);
+  void unboxBigInt(const Address& src, Register dest);
+  void unboxObject(const ValueOperand& src, Register dest);
+  void unboxObject(Register src, Register dest);
+  void unboxObject(const Address& src, Register dest);
+  void unboxObject(const BaseIndex& src, Register dest) {
+    unboxNonDouble(src, dest, JSVAL_TYPE_OBJECT);
+  }
+  void unboxValue(const ValueOperand& src, AnyRegister dest, JSValueType type);
+
+  void notBoolean(const ValueOperand& val) {
+    as_xori(val.valueReg(), val.valueReg(), 1);
+  }
+
+  // boxing code
+  void boxDouble(FloatRegister src, const ValueOperand& dest, FloatRegister);
+  void boxNonDouble(JSValueType type, Register src, const ValueOperand& dest);
+
+  // Extended unboxing API. If the payload is already in a register, returns
+  // that register. Otherwise, provides a move to the given scratch register,
+  // and returns that.
+  [[nodiscard]] Register extractObject(const Address& address,
+                                       Register scratch);
+  [[nodiscard]] Register extractObject(const ValueOperand& value,
+                                       Register scratch) {
+    unboxObject(value, scratch);
+    return scratch;
+  }
+  [[nodiscard]] Register extractString(const ValueOperand& value,
+                                       Register scratch) {
+    unboxString(value, scratch);
+    return scratch;
+  }
+  [[nodiscard]] Register extractSymbol(const ValueOperand& value,
+                                       Register scratch) {
+    unboxSymbol(value, scratch);
+    return scratch;
+  }
+  [[nodiscard]] Register extractInt32(const ValueOperand& value,
+                                      Register scratch) {
+    unboxInt32(value, scratch);
+    return scratch;
+  }
+  [[nodiscard]] Register extractBoolean(const ValueOperand& value,
+                                        Register scratch) {
+    unboxBoolean(value, scratch);
+    return scratch;
+  }
+  [[nodiscard]] Register extractTag(const Address& address, Register scratch);
+  [[nodiscard]] Register extractTag(const BaseIndex& address, Register scratch);
+  [[nodiscard]] Register extractTag(const ValueOperand& value,
+                                    Register scratch) {
+    MOZ_ASSERT(scratch != ScratchRegister);
+    splitTag(value, scratch);
+    return scratch;
+  }
+
+  void boolValueToDouble(const ValueOperand& operand, FloatRegister dest);
+  void int32ValueToDouble(const ValueOperand& operand, FloatRegister dest);
+  void loadInt32OrDouble(const Address& src, FloatRegister dest);
+  void loadInt32OrDouble(const BaseIndex& addr, FloatRegister dest);
+  void loadConstantDouble(double dp, FloatRegister dest);
+
+  void boolValueToFloat32(const ValueOperand& operand, FloatRegister dest);
+  void int32ValueToFloat32(const ValueOperand& operand, FloatRegister dest);
+  void loadConstantFloat32(float f, FloatRegister dest);
+
+  void testNullSet(Condition cond, const ValueOperand& value, Register dest);
+
+  void testObjectSet(Condition cond, const ValueOperand& value, Register dest);
+
+  void testUndefinedSet(Condition cond, const ValueOperand& value,
+                        Register dest);
+
+  // higher level tag testing code
+  Address ToPayload(Address value) { return value; }
+
+  template <typename T>
+  void loadUnboxedValue(const T& address, MIRType type, AnyRegister dest) {
+    if (dest.isFloat()) {
+      loadInt32OrDouble(address, dest.fpu());
+    } else {
+      unboxNonDouble(address, dest.gpr(), ValueTypeFromMIRType(type));
+    }
+  }
+
+  void storeUnboxedPayload(ValueOperand value, BaseIndex address, size_t nbytes,
+                           JSValueType type) {
+    switch (nbytes) {
+      case 8:
+        if (type == JSVAL_TYPE_OBJECT) {
+          unboxObjectOrNull(value, SecondScratchReg);
+        } else {
+          unboxNonDouble(value, SecondScratchReg, type);
+        }
+        computeEffectiveAddress(address, ScratchRegister);
+        as_sd(SecondScratchReg, ScratchRegister, 0);
+        return;
+      case 4:
+        store32(value.valueReg(), address);
+        return;
+      case 1:
+        store8(value.valueReg(), address);
+        return;
+      default:
+        MOZ_CRASH("Bad payload width");
+    }
+  }
+
+  void storeUnboxedPayload(ValueOperand value, Address address, size_t nbytes,
+                           JSValueType type) {
+    switch (nbytes) {
+      case 8:
+        if (type == JSVAL_TYPE_OBJECT) {
+          unboxObjectOrNull(value, SecondScratchReg);
+        } else {
+          unboxNonDouble(value, SecondScratchReg, type);
+        }
+        storePtr(SecondScratchReg, address);
+        return;
+      case 4:
+        store32(value.valueReg(), address);
+        return;
+      case 1:
+        store8(value.valueReg(), address);
+        return;
+      default:
+        MOZ_CRASH("Bad payload width");
+    }
+  }
+
+  void boxValue(JSValueType type, Register src, Register dest) {
+    MOZ_ASSERT(src != dest);
+
+    JSValueTag tag = (JSValueTag)JSVAL_TYPE_TO_TAG(type);
+    ma_li(dest, Imm32(tag));
+    ma_dsll(dest, dest, Imm32(JSVAL_TAG_SHIFT));
+    ma_dins(dest, src, Imm32(0), Imm32(JSVAL_TAG_SHIFT));
+  }
+
+  void storeValue(ValueOperand val, Operand dst);
+  void storeValue(ValueOperand val, const BaseIndex& dest);
+  void storeValue(JSValueType type, Register reg, BaseIndex dest);
+  void storeValue(ValueOperand val, const Address& dest);
+  void storeValue(JSValueType type, Register reg, Address dest);
+  void storeValue(const Value& val, Address dest);
+  void storeValue(const Value& val, BaseIndex dest);
+  void storeValue(const Address& src, const Address& dest, Register temp) {
+    loadPtr(src, temp);
+    storePtr(temp, dest);
+  }
+
+  void loadValue(Address src, ValueOperand val);
+  void loadValue(Operand dest, ValueOperand val) {
+    loadValue(dest.toAddress(), val);
+  }
+  void loadValue(const BaseIndex& addr, ValueOperand val);
+
+  void loadUnalignedValue(const Address& src, ValueOperand dest) {
+    loadValue(src, dest);
+  }
+
+  void tagValue(JSValueType type, Register payload, ValueOperand dest);
+
+  void pushValue(ValueOperand val);
+  void popValue(ValueOperand val);
+  void pushValue(const Value& val) {
+    if (val.isGCThing()) {
+      writeDataRelocation(val);
+      movWithPatch(ImmWord(val.asRawBits()), ScratchRegister);
+      push(ScratchRegister);
+    } else {
+      push(ImmWord(val.asRawBits()));
+    }
+  }
+  void pushValue(JSValueType type, Register reg) {
+    boxValue(type, reg, ScratchRegister);
+    push(ScratchRegister);
+  }
+  void pushValue(const Address& addr);
+
+  void handleFailureWithHandlerTail(Label* profilerExitTail);
+
+  /////////////////////////////////////////////////////////////////
+  // Common interface.
+  /////////////////////////////////////////////////////////////////
+ public:
+  // The following functions are exposed for use in platform-shared code.
+
+  inline void incrementInt32Value(const Address& addr);
+
+  void move32(Imm32 imm, Register dest);
+  void move32(Register src, Register dest);
+
+  void movePtr(Register src, Register dest);
+  void movePtr(ImmWord imm, Register dest);
+  void movePtr(ImmPtr imm, Register dest);
+  void movePtr(wasm::SymbolicAddress imm, Register dest);
+  void movePtr(ImmGCPtr imm, Register dest);
+
+  void load8SignExtend(const Address& address, Register dest);
+  void load8SignExtend(const BaseIndex& src, Register dest);
+
+  void load8ZeroExtend(const Address& address, Register dest);
+  void load8ZeroExtend(const BaseIndex& src, Register dest);
+
+  void load16SignExtend(const Address& address, Register dest);
+  void load16SignExtend(const BaseIndex& src, Register dest);
+
+  template <typename S>
+  void load16UnalignedSignExtend(const S& src, Register dest) {
+    ma_load_unaligned(dest, src, SizeHalfWord, SignExtend);
+  }
+
+  void load16ZeroExtend(const Address& address, Register dest);
+  void load16ZeroExtend(const BaseIndex& src, Register dest);
+
+  template <typename S>
+  void load16UnalignedZeroExtend(const S& src, Register dest) {
+    ma_load_unaligned(dest, src, SizeHalfWord, ZeroExtend);
+  }
+
+  void load32(const Address& address, Register dest);
+  void load32(const BaseIndex& address, Register dest);
+  void load32(AbsoluteAddress address, Register dest);
+  void load32(wasm::SymbolicAddress address, Register dest);
+
+  template <typename S>
+  void load32Unaligned(const S& src, Register dest) {
+    ma_load_unaligned(dest, src, SizeWord, SignExtend);
+  }
+
+  void load64(const Address& address, Register64 dest) {
+    loadPtr(address, dest.reg);
+  }
+  void load64(const BaseIndex& address, Register64 dest) {
+    loadPtr(address, dest.reg);
+  }
+
+  template <typename S>
+  void load64Unaligned(const S& src, Register64 dest) {
+    ma_load_unaligned(dest.reg, src, SizeDouble, ZeroExtend);
+  }
+
+  void loadPtr(const Address& address, Register dest);
+  void loadPtr(const BaseIndex& src, Register dest);
+  void loadPtr(AbsoluteAddress address, Register dest);
+  void loadPtr(wasm::SymbolicAddress address, Register dest);
+
+  void loadPrivate(const Address& address, Register dest);
+
+  void loadUnalignedDouble(const wasm::MemoryAccessDesc& access,
+                           const BaseIndex& src, Register temp,
+                           FloatRegister dest);
+  void loadUnalignedFloat32(const wasm::MemoryAccessDesc& access,
+                            const BaseIndex& src, Register temp,
+                            FloatRegister dest);
+
+  void store8(Register src, const Address& address);
+  void store8(Imm32 imm, const Address& address);
+  void store8(Register src, const BaseIndex& address);
+  void store8(Imm32 imm, const BaseIndex& address);
+
+  void store16(Register src, const Address& address);
+  void store16(Imm32 imm, const Address& address);
+  void store16(Register src, const BaseIndex& address);
+  void store16(Imm32 imm, const BaseIndex& address);
+
+  template <typename T>
+  void store16Unaligned(Register src, const T& dest) {
+    ma_store_unaligned(src, dest, SizeHalfWord);
+  }
+
+  void store32(Register src, AbsoluteAddress address);
+  void store32(Register src, const Address& address);
+  void store32(Register src, const BaseIndex& address);
+  void store32(Imm32 src, const Address& address);
+  void store32(Imm32 src, const BaseIndex& address);
+
+  // NOTE: This will use second scratch on MIPS64. Only ARM needs the
+  // implementation without second scratch.
+  void store32_NoSecondScratch(Imm32 src, const Address& address) {
+    store32(src, address);
+  }
+
+  template <typename T>
+  void store32Unaligned(Register src, const T& dest) {
+    ma_store_unaligned(src, dest, SizeWord);
+  }
+
+  void store64(Imm64 imm, Address address) {
+    storePtr(ImmWord(imm.value), address);
+  }
+  void store64(Imm64 imm, const BaseIndex& address) {
+    storePtr(ImmWord(imm.value), address);
+  }
+
+  void store64(Register64 src, Address address) { storePtr(src.reg, address); }
+  void store64(Register64 src, const BaseIndex& address) {
+    storePtr(src.reg, address);
+  }
+
+  template <typename T>
+  void store64Unaligned(Register64 src, const T& dest) {
+    ma_store_unaligned(src.reg, dest, SizeDouble);
+  }
+
+  template <typename T>
+  void storePtr(ImmWord imm, T address);
+  template <typename T>
+  void storePtr(ImmPtr imm, T address);
+  template <typename T>
+  void storePtr(ImmGCPtr imm, T address);
+  void storePtr(Register src, const Address& address);
+  void storePtr(Register src, const BaseIndex& address);
+  void storePtr(Register src, AbsoluteAddress dest);
+
+  void storeUnalignedFloat32(const wasm::MemoryAccessDesc& access,
+                             FloatRegister src, Register temp,
+                             const BaseIndex& dest);
+  void storeUnalignedDouble(const wasm::MemoryAccessDesc& access,
+                            FloatRegister src, Register temp,
+                            const BaseIndex& dest);
+
+  void moveDouble(FloatRegister src, FloatRegister dest) { as_movd(dest, src); }
+
+  void zeroDouble(FloatRegister reg) { moveToDouble(zero, reg); }
+
+  void convertUInt64ToDouble(Register src, FloatRegister dest);
+
+  void breakpoint();
+
+  void checkStackAlignment();
+
+  static void calculateAlignedStackPointer(void** stackPointer);
+
+  // If source is a double, load it into dest. If source is int32,
+  // convert it to double. Else, branch to failure.
+  void ensureDouble(const ValueOperand& source, FloatRegister dest,
+                    Label* failure);
+
+  void cmpPtrSet(Assembler::Condition cond, Address lhs, ImmPtr rhs,
+                 Register dest);
+  void cmpPtrSet(Assembler::Condition cond, Register lhs, Address rhs,
+                 Register dest);
+  void cmpPtrSet(Assembler::Condition cond, Address lhs, Register rhs,
+                 Register dest);
+
+  void cmp32Set(Assembler::Condition cond, Register lhs, Address rhs,
+                Register dest);
+
+  void cmp64Set(Assembler::Condition cond, Register lhs, Imm32 rhs,
+                Register dest) {
+    ma_cmp_set(dest, lhs, rhs, cond);
+  }
+
+ protected:
+  bool buildOOLFakeExitFrame(void* fakeReturnAddr);
+
+  void wasmLoadI64Impl(const wasm::MemoryAccessDesc& access,
+                       Register memoryBase, Register ptr, Register ptrScratch,
+                       Register64 output, Register tmp);
+  void wasmStoreI64Impl(const wasm::MemoryAccessDesc& access, Register64 value,
+                        Register memoryBase, Register ptr, Register ptrScratch,
+                        Register tmp);
+
+ public:
+  void lea(Operand addr, Register dest) {
+    ma_daddu(dest, addr.baseReg(), Imm32(addr.disp()));
+  }
+
+  void abiret() {
+    as_jr(ra);
+    as_nop();
+  }
+
+  void moveFloat32(FloatRegister src, FloatRegister dest) {
+    as_movs(dest, src);
+  }
+
+  void loadWasmGlobalPtr(uint32_t globalDataOffset, Register dest) {
+    loadPtr(Address(WasmTlsReg,
+                    offsetof(wasm::TlsData, globalArea) + globalDataOffset),
+            dest);
+  }
+  void loadWasmPinnedRegsFromTls() {
+    loadPtr(Address(WasmTlsReg, offsetof(wasm::TlsData, memoryBase)), HeapReg);
+  }
+
+  // Instrumentation for entering and leaving the profiler.
+  void profilerEnterFrame(Register framePtr, Register scratch);
+  void profilerExitFrame();
+};
+
+typedef MacroAssemblerMIPS64Compat MacroAssemblerSpecific;
+
+}  // namespace jit
+}  // namespace js
+
+#endif /* jit_mips64_MacroAssembler_mips64_h */