michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef jit_shared_CodeGenerator_x86_shared_h
michael@0: #define jit_shared_CodeGenerator_x86_shared_h
michael@0: 
michael@0: #include "jit/shared/CodeGenerator-shared.h"
michael@0: 
michael@0: namespace js {
michael@0: namespace jit {
michael@0: 
michael@0: class OutOfLineBailout;
michael@0: class OutOfLineUndoALUOperation;
michael@0: class MulNegativeZeroCheck;
michael@0: class ModOverflowCheck;
michael@0: class ReturnZero;
michael@0: class OutOfLineTableSwitch;
michael@0: 
michael@0: class CodeGeneratorX86Shared : public CodeGeneratorShared
michael@0: {
michael@0:     friend class MoveResolverX86;
michael@0: 
michael@0:     CodeGeneratorX86Shared *thisFromCtor() {
michael@0:         return this;
michael@0:     }
michael@0: 
michael@0:     template <typename T>
michael@0:     bool bailout(const T &t, LSnapshot *snapshot);
michael@0: 
michael@0:   protected:
michael@0:     // Label for the common return path.
michael@0:     NonAssertingLabel returnLabel_;
michael@0:     NonAssertingLabel deoptLabel_;
michael@0: 
michael@0:     inline Operand ToOperand(const LAllocation &a) {
michael@0:         if (a.isGeneralReg())
michael@0:             return Operand(a.toGeneralReg()->reg());
michael@0:         if (a.isFloatReg())
michael@0:             return Operand(a.toFloatReg()->reg());
michael@0:         return Operand(StackPointer, ToStackOffset(&a));
michael@0:     }
michael@0:     inline Operand ToOperand(const LAllocation *a) {
michael@0:         return ToOperand(*a);
michael@0:     }
michael@0:     inline Operand ToOperand(const LDefinition *def) {
michael@0:         return ToOperand(def->output());
michael@0:     }
michael@0: 
michael@0:     MoveOperand toMoveOperand(const LAllocation *a) const;
michael@0: 
michael@0:     bool bailoutIf(Assembler::Condition condition, LSnapshot *snapshot);
michael@0:     bool bailoutIf(Assembler::DoubleCondition condition, LSnapshot *snapshot);
michael@0:     bool bailoutFrom(Label *label, LSnapshot *snapshot);
michael@0:     bool bailout(LSnapshot *snapshot);
michael@0: 
michael@0:     template <typename T1, typename T2>
michael@0:     bool bailoutCmpPtr(Assembler::Condition c, T1 lhs, T2 rhs, LSnapshot *snapshot) {
michael@0:         masm.cmpPtr(lhs, rhs);
michael@0:         return bailoutIf(c, snapshot);
michael@0:     }
michael@0:     bool bailoutTestPtr(Assembler::Condition c, Register lhs, Register rhs, LSnapshot *snapshot) {
michael@0:         masm.testPtr(lhs, rhs);
michael@0:         return bailoutIf(c, snapshot);
michael@0:     }
michael@0:     template <typename T1, typename T2>
michael@0:     bool bailoutCmp32(Assembler::Condition c, T1 lhs, T2 rhs, LSnapshot *snapshot) {
michael@0:         masm.cmp32(lhs, rhs);
michael@0:         return bailoutIf(c, snapshot);
michael@0:     }
michael@0:     template <typename T1, typename T2>
michael@0:     bool bailoutTest32(Assembler::Condition c, T1 lhs, T2 rhs, LSnapshot *snapshot) {
michael@0:         masm.test32(lhs, rhs);
michael@0:         return bailoutIf(c, snapshot);
michael@0:     }
michael@0: 
michael@0:   protected:
michael@0:     bool generatePrologue();
michael@0:     bool generateAsmJSPrologue(Label *stackOverflowLabe);
michael@0:     bool generateEpilogue();
michael@0:     bool generateOutOfLineCode();
michael@0: 
michael@0:     Operand createArrayElementOperand(Register elements, const LAllocation *index);
michael@0: 
michael@0:     void emitCompare(MCompare::CompareType type, const LAllocation *left, const LAllocation *right);
michael@0: 
michael@0:     // Emits a branch that directs control flow to the true block if |cond| is
michael@0:     // true, and the false block if |cond| is false.
michael@0:     void emitBranch(Assembler::Condition cond, MBasicBlock *ifTrue, MBasicBlock *ifFalse,
michael@0:                     Assembler::NaNCond ifNaN = Assembler::NaN_HandledByCond);
michael@0:     void emitBranch(Assembler::DoubleCondition cond, MBasicBlock *ifTrue, MBasicBlock *ifFalse);
michael@0: 
michael@0:     void testNullEmitBranch(Assembler::Condition cond, const ValueOperand &value,
michael@0:                             MBasicBlock *ifTrue, MBasicBlock *ifFalse)
michael@0:     {
michael@0:         cond = masm.testNull(cond, value);
michael@0:         emitBranch(cond, ifTrue, ifFalse);
michael@0:     }
michael@0:     void testUndefinedEmitBranch(Assembler::Condition cond, const ValueOperand &value,
michael@0:                                  MBasicBlock *ifTrue, MBasicBlock *ifFalse)
michael@0:     {
michael@0:         cond = masm.testUndefined(cond, value);
michael@0:         emitBranch(cond, ifTrue, ifFalse);
michael@0:     }
michael@0: 
michael@0:     bool emitTableSwitchDispatch(MTableSwitch *mir, const Register &index, const Register &base);
michael@0: 
michael@0:   public:
michael@0:     CodeGeneratorX86Shared(MIRGenerator *gen, LIRGraph *graph, MacroAssembler *masm);
michael@0: 
michael@0:   public:
michael@0:     // Instruction visitors.
michael@0:     virtual bool visitDouble(LDouble *ins);
michael@0:     virtual bool visitFloat32(LFloat32 *ins);
michael@0:     virtual bool visitMinMaxD(LMinMaxD *ins);
michael@0:     virtual bool visitAbsD(LAbsD *ins);
michael@0:     virtual bool visitAbsF(LAbsF *ins);
michael@0:     virtual bool visitSqrtD(LSqrtD *ins);
michael@0:     virtual bool visitSqrtF(LSqrtF *ins);
michael@0:     virtual bool visitPowHalfD(LPowHalfD *ins);
michael@0:     virtual bool visitAddI(LAddI *ins);
michael@0:     virtual bool visitSubI(LSubI *ins);
michael@0:     virtual bool visitMulI(LMulI *ins);
michael@0:     virtual bool visitDivI(LDivI *ins);
michael@0:     virtual bool visitDivPowTwoI(LDivPowTwoI *ins);
michael@0:     virtual bool visitDivOrModConstantI(LDivOrModConstantI *ins);
michael@0:     virtual bool visitModI(LModI *ins);
michael@0:     virtual bool visitModPowTwoI(LModPowTwoI *ins);
michael@0:     virtual bool visitBitNotI(LBitNotI *ins);
michael@0:     virtual bool visitBitOpI(LBitOpI *ins);
michael@0:     virtual bool visitShiftI(LShiftI *ins);
michael@0:     virtual bool visitUrshD(LUrshD *ins);
michael@0:     virtual bool visitTestIAndBranch(LTestIAndBranch *test);
michael@0:     virtual bool visitTestDAndBranch(LTestDAndBranch *test);
michael@0:     virtual bool visitTestFAndBranch(LTestFAndBranch *test);
michael@0:     virtual bool visitCompare(LCompare *comp);
michael@0:     virtual bool visitCompareAndBranch(LCompareAndBranch *comp);
michael@0:     virtual bool visitCompareD(LCompareD *comp);
michael@0:     virtual bool visitCompareDAndBranch(LCompareDAndBranch *comp);
michael@0:     virtual bool visitCompareF(LCompareF *comp);
michael@0:     virtual bool visitCompareFAndBranch(LCompareFAndBranch *comp);
michael@0:     virtual bool visitBitAndAndBranch(LBitAndAndBranch *baab);
michael@0:     virtual bool visitNotI(LNotI *comp);
michael@0:     virtual bool visitNotD(LNotD *comp);
michael@0:     virtual bool visitNotF(LNotF *comp);
michael@0:     virtual bool visitMathD(LMathD *math);
michael@0:     virtual bool visitMathF(LMathF *math);
michael@0:     virtual bool visitFloor(LFloor *lir);
michael@0:     virtual bool visitFloorF(LFloorF *lir);
michael@0:     virtual bool visitRound(LRound *lir);
michael@0:     virtual bool visitRoundF(LRoundF *lir);
michael@0:     virtual bool visitGuardShape(LGuardShape *guard);
michael@0:     virtual bool visitGuardObjectType(LGuardObjectType *guard);
michael@0:     virtual bool visitGuardClass(LGuardClass *guard);
michael@0:     virtual bool visitEffectiveAddress(LEffectiveAddress *ins);
michael@0:     virtual bool visitUDivOrMod(LUDivOrMod *ins);
michael@0:     virtual bool visitAsmJSPassStackArg(LAsmJSPassStackArg *ins);
michael@0: 
michael@0:     bool visitForkJoinGetSlice(LForkJoinGetSlice *ins);
michael@0: 
michael@0:     bool visitNegI(LNegI *lir);
michael@0:     bool visitNegD(LNegD *lir);
michael@0:     bool visitNegF(LNegF *lir);
michael@0: 
michael@0:     // Out of line visitors.
michael@0:     bool visitOutOfLineBailout(OutOfLineBailout *ool);
michael@0:     bool visitOutOfLineUndoALUOperation(OutOfLineUndoALUOperation *ool);
michael@0:     bool visitMulNegativeZeroCheck(MulNegativeZeroCheck *ool);
michael@0:     bool visitModOverflowCheck(ModOverflowCheck *ool);
michael@0:     bool visitReturnZero(ReturnZero *ool);
michael@0:     bool visitOutOfLineTableSwitch(OutOfLineTableSwitch *ool);
michael@0:     bool generateInvalidateEpilogue();
michael@0: };
michael@0: 
michael@0: // An out-of-line bailout thunk.
michael@0: class OutOfLineBailout : public OutOfLineCodeBase<CodeGeneratorX86Shared>
michael@0: {
michael@0:     LSnapshot *snapshot_;
michael@0: 
michael@0:   public:
michael@0:     OutOfLineBailout(LSnapshot *snapshot)
michael@0:       : snapshot_(snapshot)
michael@0:     { }
michael@0: 
michael@0:     bool accept(CodeGeneratorX86Shared *codegen);
michael@0: 
michael@0:     LSnapshot *snapshot() const {
michael@0:         return snapshot_;
michael@0:     }
michael@0: };
michael@0: 
michael@0: } // namespace jit
michael@0: } // namespace js
michael@0: 
michael@0: #endif /* jit_shared_CodeGenerator_x86_shared_h */