1 files changed, 710 insertions, 0 deletions
diff --git a/js/src/jit/arm/LIR-arm.h b/js/src/jit/arm/LIR-arm.h
new file mode 100644
index 000000000..c498bf28e
--- /dev/null
+++ b/js/src/jit/arm/LIR-arm.h
@@ -0,0 +1,710 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * 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_arm_LIR_arm_h
+#define jit_arm_LIR_arm_h
+
+namespace js {
+namespace jit {
+
+class LBoxFloatingPoint : public LInstructionHelper<2, 1, 1>
+{
+    MIRType type_;
+
+  public:
+    LIR_HEADER(BoxFloatingPoint);
+
+    LBoxFloatingPoint(const LAllocation& in, const LDefinition& temp, MIRType type)
+      : type_(type)
+    {
+        setOperand(0, in);
+        setTemp(0, temp);
+    }
+
+    MIRType type() const {
+        return type_;
+    }
+    const char* extraName() const {
+        return StringFromMIRType(type_);
+    }
+};
+
+class LUnbox : public LInstructionHelper<1, 2, 0>
+{
+  public:
+    LIR_HEADER(Unbox);
+
+    MUnbox* mir() const {
+        return mir_->toUnbox();
+    }
+    const LAllocation* payload() {
+        return getOperand(0);
+    }
+    const LAllocation* type() {
+        return getOperand(1);
+    }
+    const char* extraName() const {
+        return StringFromMIRType(mir()->type());
+    }
+};
+
+class LUnboxFloatingPoint : public LInstructionHelper<1, 2, 0>
+{
+    MIRType type_;
+
+  public:
+    LIR_HEADER(UnboxFloatingPoint);
+
+    static const size_t Input = 0;
+
+    LUnboxFloatingPoint(const LBoxAllocation& input, MIRType type)
+      : type_(type)
+    {
+        setBoxOperand(Input, input);
+    }
+
+    MUnbox* mir() const {
+        return mir_->toUnbox();
+    }
+
+    MIRType type() const {
+        return type_;
+    }
+    const char* extraName() const {
+        return StringFromMIRType(type_);
+    }
+};
+
+// Convert a 32-bit unsigned integer to a double.
+class LWasmUint32ToDouble : public LInstructionHelper<1, 1, 0>
+{
+  public:
+    LIR_HEADER(WasmUint32ToDouble)
+
+    LWasmUint32ToDouble(const LAllocation& input) {
+        setOperand(0, input);
+    }
+};
+
+// Convert a 32-bit unsigned integer to a float32.
+class LWasmUint32ToFloat32 : public LInstructionHelper<1, 1, 0>
+{
+  public:
+    LIR_HEADER(WasmUint32ToFloat32)
+
+    LWasmUint32ToFloat32(const LAllocation& input) {
+        setOperand(0, input);
+    }
+};
+
+class LDivI : public LBinaryMath<1>
+{
+  public:
+    LIR_HEADER(DivI);
+
+    LDivI(const LAllocation& lhs, const LAllocation& rhs,
+          const LDefinition& temp) {
+        setOperand(0, lhs);
+        setOperand(1, rhs);
+        setTemp(0, temp);
+    }
+
+    MDiv* mir() const {
+        return mir_->toDiv();
+    }
+};
+
+class LDivOrModI64 : public LCallInstructionHelper<INT64_PIECES, INT64_PIECES*2, 0>
+{
+  public:
+    LIR_HEADER(DivOrModI64)
+
+    static const size_t Lhs = 0;
+    static const size_t Rhs = INT64_PIECES;
+
+    LDivOrModI64(const LInt64Allocation& lhs, const LInt64Allocation& rhs)
+    {
+        setInt64Operand(Lhs, lhs);
+        setInt64Operand(Rhs, rhs);
+    }
+
+    MBinaryArithInstruction* mir() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        return static_cast<MBinaryArithInstruction*>(mir_);
+    }
+    bool canBeDivideByZero() const {
+        if (mir_->isMod())
+            return mir_->toMod()->canBeDivideByZero();
+        return mir_->toDiv()->canBeDivideByZero();
+    }
+    bool canBeNegativeOverflow() const {
+        if (mir_->isMod())
+            return mir_->toMod()->canBeNegativeDividend();
+        return mir_->toDiv()->canBeNegativeOverflow();
+    }
+    wasm::TrapOffset trapOffset() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        if (mir_->isMod())
+            return mir_->toMod()->trapOffset();
+        return mir_->toDiv()->trapOffset();
+    }
+};
+
+class LUDivOrModI64 : public LCallInstructionHelper<INT64_PIECES, INT64_PIECES*2, 0>
+{
+  public:
+    LIR_HEADER(UDivOrModI64)
+
+    static const size_t Lhs = 0;
+    static const size_t Rhs = INT64_PIECES;
+
+    LUDivOrModI64(const LInt64Allocation& lhs, const LInt64Allocation& rhs)
+    {
+        setInt64Operand(Lhs, lhs);
+        setInt64Operand(Rhs, rhs);
+    }
+
+    MBinaryArithInstruction* mir() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        return static_cast<MBinaryArithInstruction*>(mir_);
+    }
+    bool canBeDivideByZero() const {
+        if (mir_->isMod())
+            return mir_->toMod()->canBeDivideByZero();
+        return mir_->toDiv()->canBeDivideByZero();
+    }
+    bool canBeNegativeOverflow() const {
+        if (mir_->isMod())
+            return mir_->toMod()->canBeNegativeDividend();
+        return mir_->toDiv()->canBeNegativeOverflow();
+    }
+    wasm::TrapOffset trapOffset() const {
+        MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+        if (mir_->isMod())
+            return mir_->toMod()->trapOffset();
+        return mir_->toDiv()->trapOffset();
+    }
+};
+
+// LSoftDivI is a software divide for ARM cores that don't support a hardware
+// divide instruction.
+//
+// It is implemented as a proper C function so it trashes r0, r1, r2 and r3.
+// The call also trashes lr, and has the ability to trash ip. The function also
+// takes two arguments (dividend in r0, divisor in r1). The LInstruction gets
+// encoded such that the divisor and dividend are passed in their apropriate
+// registers and end their life at the start of the instruction by the use of
+// useFixedAtStart. The result is returned in r0 and the other three registers
+// that can be trashed are marked as temps. For the time being, the link
+// register is not marked as trashed because we never allocate to the link
+// register. The FP registers are not trashed.
+class LSoftDivI : public LBinaryMath<3>
+{
+  public:
+    LIR_HEADER(SoftDivI);
+
+    LSoftDivI(const LAllocation& lhs, const LAllocation& rhs,
+              const LDefinition& temp1, const LDefinition& temp2, const LDefinition& temp3) {
+        setOperand(0, lhs);
+        setOperand(1, rhs);
+        setTemp(0, temp1);
+        setTemp(1, temp2);
+        setTemp(2, temp3);
+    }
+
+    MDiv* mir() const {
+        return mir_->toDiv();
+    }
+};
+
+class LDivPowTwoI : public LInstructionHelper<1, 1, 0>
+{
+    const int32_t shift_;
+
+  public:
+    LIR_HEADER(DivPowTwoI)
+
+    LDivPowTwoI(const LAllocation& lhs, int32_t shift)
+      : shift_(shift)
+    {
+        setOperand(0, lhs);
+    }
+
+    const LAllocation* numerator() {
+        return getOperand(0);
+    }
+
+    int32_t shift() {
+        return shift_;
+    }
+
+    MDiv* mir() const {
+        return mir_->toDiv();
+    }
+};
+
+class LModI : public LBinaryMath<1>
+{
+  public:
+    LIR_HEADER(ModI);
+
+    LModI(const LAllocation& lhs, const LAllocation& rhs,
+          const LDefinition& callTemp)
+    {
+        setOperand(0, lhs);
+        setOperand(1, rhs);
+        setTemp(0, callTemp);
+    }
+
+    const LDefinition* callTemp() {
+        return getTemp(0);
+    }
+
+    MMod* mir() const {
+        return mir_->toMod();
+    }
+};
+
+class LSoftModI : public LBinaryMath<4>
+{
+  public:
+    LIR_HEADER(SoftModI);
+
+    LSoftModI(const LAllocation& lhs, const LAllocation& rhs,
+              const LDefinition& temp1, const LDefinition& temp2, const LDefinition& temp3,
+              const LDefinition& callTemp)
+    {
+        setOperand(0, lhs);
+        setOperand(1, rhs);
+        setTemp(0, temp1);
+        setTemp(1, temp2);
+        setTemp(2, temp3);
+        setTemp(3, callTemp);
+    }
+
+    const LDefinition* callTemp() {
+        return getTemp(3);
+    }
+
+    MMod* mir() const {
+        return mir_->toMod();
+    }
+};
+
+class LModPowTwoI : public LInstructionHelper<1, 1, 0>
+{
+    const int32_t shift_;
+
+  public:
+    LIR_HEADER(ModPowTwoI);
+    int32_t shift()
+    {
+        return shift_;
+    }
+
+    LModPowTwoI(const LAllocation& lhs, int32_t shift)
+      : shift_(shift)
+    {
+        setOperand(0, lhs);
+    }
+
+    MMod* mir() const {
+        return mir_->toMod();
+    }
+};
+
+class LModMaskI : public LInstructionHelper<1, 1, 2>
+{
+    const int32_t shift_;
+
+  public:
+    LIR_HEADER(ModMaskI);
+
+    LModMaskI(const LAllocation& lhs, const LDefinition& temp1, const LDefinition& temp2,
+              int32_t shift)
+      : shift_(shift)
+    {
+        setOperand(0, lhs);
+        setTemp(0, temp1);
+        setTemp(1, temp2);
+    }
+
+    int32_t shift() const {
+        return shift_;
+    }
+
+    MMod* mir() const {
+        return mir_->toMod();
+    }
+};
+
+// Takes a tableswitch with an integer to decide.
+class LTableSwitch : public LInstructionHelper<0, 1, 1>
+{
+  public:
+    LIR_HEADER(TableSwitch);
+
+    LTableSwitch(const LAllocation& in, const LDefinition& inputCopy, MTableSwitch* ins) {
+        setOperand(0, in);
+        setTemp(0, inputCopy);
+        setMir(ins);
+    }
+
+    MTableSwitch* mir() const {
+        return mir_->toTableSwitch();
+    }
+
+    const LAllocation* index() {
+        return getOperand(0);
+    }
+    const LDefinition* tempInt() {
+        return getTemp(0);
+    }
+    // This is added to share the same CodeGenerator prefixes.
+    const LDefinition* tempPointer() {
+        return nullptr;
+    }
+};
+
+// Takes a tableswitch with an integer to decide.
+class LTableSwitchV : public LInstructionHelper<0, BOX_PIECES, 2>
+{
+  public:
+    LIR_HEADER(TableSwitchV);
+
+    LTableSwitchV(const LBoxAllocation& input, const LDefinition& inputCopy,
+                  const LDefinition& floatCopy, MTableSwitch* ins)
+    {
+        setBoxOperand(InputValue, input);
+        setTemp(0, inputCopy);
+        setTemp(1, floatCopy);
+        setMir(ins);
+    }
+
+    MTableSwitch* mir() const {
+        return mir_->toTableSwitch();
+    }
+
+    static const size_t InputValue = 0;
+
+    const LDefinition* tempInt() {
+        return getTemp(0);
+    }
+    const LDefinition* tempFloat() {
+        return getTemp(1);
+    }
+    const LDefinition* tempPointer() {
+        return nullptr;
+    }
+};
+
+class LGuardShape : public LInstructionHelper<0, 1, 1>
+{
+  public:
+    LIR_HEADER(GuardShape);
+
+    LGuardShape(const LAllocation& in, const LDefinition& temp) {
+        setOperand(0, in);
+        setTemp(0, temp);
+    }
+    const MGuardShape* mir() const {
+        return mir_->toGuardShape();
+    }
+    const LDefinition* tempInt() {
+        return getTemp(0);
+    }
+};
+
+class LGuardObjectGroup : public LInstructionHelper<0, 1, 1>
+{
+  public:
+    LIR_HEADER(GuardObjectGroup);
+
+    LGuardObjectGroup(const LAllocation& in, const LDefinition& temp) {
+        setOperand(0, in);
+        setTemp(0, temp);
+    }
+    const MGuardObjectGroup* mir() const {
+        return mir_->toGuardObjectGroup();
+    }
+    const LDefinition* tempInt() {
+        return getTemp(0);
+    }
+};
+
+class LMulI : public LBinaryMath<0>
+{
+  public:
+    LIR_HEADER(MulI);
+
+    MMul* mir() {
+        return mir_->toMul();
+    }
+};
+
+class LUDiv : public LBinaryMath<0>
+{
+  public:
+    LIR_HEADER(UDiv);
+
+    MDiv* mir() {
+        return mir_->toDiv();
+    }
+};
+
+class LUMod : public LBinaryMath<0>
+{
+  public:
+    LIR_HEADER(UMod);
+
+    MMod* mir() {
+        return mir_->toMod();
+    }
+};
+
+class LSoftUDivOrMod : public LBinaryMath<3>
+{
+  public:
+    LIR_HEADER(SoftUDivOrMod);
+
+    LSoftUDivOrMod(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp1,
+                   const LDefinition& temp2, const LDefinition& temp3) {
+        setOperand(0, lhs);
+        setOperand(1, rhs);
+        setTemp(0, temp1);
+        setTemp(1, temp2);
+        setTemp(2, temp3);
+    }
+
+    MInstruction* mir() {
+        return mir_->toInstruction();
+    }
+};
+
+class LAsmJSCompareExchangeCallout : public LCallInstructionHelper<1, 4, 2>
+{
+  public:
+    LIR_HEADER(AsmJSCompareExchangeCallout)
+    LAsmJSCompareExchangeCallout(const LAllocation& ptr, const LAllocation& oldval,
+                                 const LAllocation& newval, const LAllocation& tls,
+                                 const LDefinition& temp1, const LDefinition& temp2)
+    {
+        setOperand(0, ptr);
+        setOperand(1, oldval);
+        setOperand(2, newval);
+        setOperand(3, tls);
+        setTemp(0, temp1);
+        setTemp(1, temp2);
+    }
+    const LAllocation* ptr() {
+        return getOperand(0);
+    }
+    const LAllocation* oldval() {
+        return getOperand(1);
+    }
+    const LAllocation* newval() {
+        return getOperand(2);
+    }
+    const LAllocation* tls() {
+        return getOperand(3);
+    }
+
+    const MAsmJSCompareExchangeHeap* mir() const {
+        return mir_->toAsmJSCompareExchangeHeap();
+    }
+};
+
+class LAsmJSAtomicExchangeCallout : public LCallInstructionHelper<1, 3, 2>
+{
+  public:
+    LIR_HEADER(AsmJSAtomicExchangeCallout)
+
+    LAsmJSAtomicExchangeCallout(const LAllocation& ptr, const LAllocation& value,
+                                const LAllocation& tls, const LDefinition& temp1,
+                                const LDefinition& temp2)
+    {
+        setOperand(0, ptr);
+        setOperand(1, value);
+        setOperand(2, tls);
+        setTemp(0, temp1);
+        setTemp(1, temp2);
+    }
+    const LAllocation* ptr() {
+        return getOperand(0);
+    }
+    const LAllocation* value() {
+        return getOperand(1);
+    }
+    const LAllocation* tls() {
+        return getOperand(2);
+    }
+
+    const MAsmJSAtomicExchangeHeap* mir() const {
+        return mir_->toAsmJSAtomicExchangeHeap();
+    }
+};
+
+class LAsmJSAtomicBinopCallout : public LCallInstructionHelper<1, 3, 2>
+{
+  public:
+    LIR_HEADER(AsmJSAtomicBinopCallout)
+    LAsmJSAtomicBinopCallout(const LAllocation& ptr, const LAllocation& value,
+                             const LAllocation& tls, const LDefinition& temp1,
+                             const LDefinition& temp2)
+    {
+        setOperand(0, ptr);
+        setOperand(1, value);
+        setOperand(2, tls);
+        setTemp(0, temp1);
+        setTemp(1, temp2);
+    }
+    const LAllocation* ptr() {
+        return getOperand(0);
+    }
+    const LAllocation* value() {
+        return getOperand(1);
+    }
+    const LAllocation* tls() {
+        return getOperand(2);
+    }
+
+    const MAsmJSAtomicBinopHeap* mir() const {
+        return mir_->toAsmJSAtomicBinopHeap();
+    }
+};
+
+class LWasmTruncateToInt64 : public LCallInstructionHelper<INT64_PIECES, 1, 0>
+{
+  public:
+    LIR_HEADER(WasmTruncateToInt64);
+
+    LWasmTruncateToInt64(const LAllocation& in)
+    {
+        setOperand(0, in);
+    }
+
+    MWasmTruncateToInt64* mir() const {
+        return mir_->toWasmTruncateToInt64();
+    }
+};
+
+class LInt64ToFloatingPointCall: public LCallInstructionHelper<1, INT64_PIECES, 0>
+{
+  public:
+    LIR_HEADER(Int64ToFloatingPointCall);
+
+    MInt64ToFloatingPoint* mir() const {
+        return mir_->toInt64ToFloatingPoint();
+    }
+};
+
+namespace details {
+
+// Base class for the int64 and non-int64 variants.
+template<size_t NumDefs>
+class LWasmUnalignedLoadBase : public details::LWasmLoadBase<NumDefs, 4>
+{
+  public:
+    typedef LWasmLoadBase<NumDefs, 4> Base;
+    explicit LWasmUnalignedLoadBase(const LAllocation& ptr, const LDefinition& ptrCopy,
+                                    const LDefinition& temp1, const LDefinition& temp2,
+                                    const LDefinition& temp3)
+      : Base(ptr)
+    {
+        Base::setTemp(0, ptrCopy);
+        Base::setTemp(1, temp1);
+        Base::setTemp(2, temp2);
+        Base::setTemp(3, temp3);
+    }
+
+    const LDefinition* ptrCopy() {
+        return Base::getTemp(0);
+    }
+};
+
+} // namespace details
+
+class LWasmUnalignedLoad : public details::LWasmUnalignedLoadBase<1>
+{
+  public:
+    explicit LWasmUnalignedLoad(const LAllocation& ptr, const LDefinition& ptrCopy,
+                                const LDefinition& temp1, const LDefinition& temp2,
+                                const LDefinition& temp3)
+      : LWasmUnalignedLoadBase(ptr, ptrCopy, temp1, temp2, temp3)
+    {}
+    LIR_HEADER(WasmUnalignedLoad);
+};
+
+class LWasmUnalignedLoadI64 : public details::LWasmUnalignedLoadBase<INT64_PIECES>
+{
+  public:
+    explicit LWasmUnalignedLoadI64(const LAllocation& ptr, const LDefinition& ptrCopy,
+                                   const LDefinition& temp1, const LDefinition& temp2,
+                                   const LDefinition& temp3)
+      : LWasmUnalignedLoadBase(ptr, ptrCopy, temp1, temp2, temp3)
+    {}
+    LIR_HEADER(WasmUnalignedLoadI64);
+};
+
+namespace details {
+
+// Base class for the int64 and non-int64 variants.
+template<size_t NumOps>
+class LWasmUnalignedStoreBase : public LInstructionHelper<0, NumOps, 2>
+{
+  public:
+    typedef LInstructionHelper<0, NumOps, 2> Base;
+
+    static const uint32_t ValueIndex = 1;
+
+    LWasmUnalignedStoreBase(const LAllocation& ptr, const LDefinition& ptrCopy,
+                            const LDefinition& valueHelper)
+    {
+        Base::setOperand(0, ptr);
+        Base::setTemp(0, ptrCopy);
+        Base::setTemp(1, valueHelper);
+    }
+    MWasmStore* mir() const {
+        return Base::mir_->toWasmStore();
+    }
+    const LDefinition* ptrCopy() {
+        return Base::getTemp(0);
+    }
+    const LDefinition* valueHelper() {
+        return Base::getTemp(1);
+    }
+};
+
+} // namespace details
+
+class LWasmUnalignedStore : public details::LWasmUnalignedStoreBase<2>
+{
+  public:
+    LIR_HEADER(WasmUnalignedStore);
+    LWasmUnalignedStore(const LAllocation& ptr, const LAllocation& value,
+                        const LDefinition& ptrCopy, const LDefinition& valueHelper)
+      : LWasmUnalignedStoreBase(ptr, ptrCopy, valueHelper)
+    {
+        setOperand(1, value);
+    }
+};
+
+class LWasmUnalignedStoreI64 : public details::LWasmUnalignedStoreBase<1 + INT64_PIECES>
+{
+  public:
+    LIR_HEADER(WasmUnalignedStoreI64);
+    LWasmUnalignedStoreI64(const LAllocation& ptr, const LInt64Allocation& value,
+                           const LDefinition& ptrCopy, const LDefinition& valueHelper)
+      : LWasmUnalignedStoreBase(ptr, ptrCopy, valueHelper)
+    {
+        setInt64Operand(1, value);
+    }
+};
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_arm_LIR_arm_h */