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_arm_MoveEmitter_arm_h
michael@0: #define jit_arm_MoveEmitter_arm_h
michael@0: 
michael@0: #include "jit/IonMacroAssembler.h"
michael@0: #include "jit/MoveResolver.h"
michael@0: 
michael@0: namespace js {
michael@0: namespace jit {
michael@0: 
michael@0: class CodeGenerator;
michael@0: 
michael@0: class MoveEmitterARM
michael@0: {
michael@0:     bool inCycle_;
michael@0:     MacroAssemblerARMCompat &masm;
michael@0: 
michael@0:     // Original stack push value.
michael@0:     uint32_t pushedAtStart_;
michael@0: 
michael@0:     // These store stack offsets to spill locations, snapshotting
michael@0:     // codegen->framePushed_ at the time they were allocated. They are -1 if no
michael@0:     // stack space has been allocated for that particular spill.
michael@0:     int32_t pushedAtCycle_;
michael@0:     int32_t pushedAtSpill_;
michael@0: 
michael@0:     // These are registers that are available for temporary use. They may be
michael@0:     // assigned InvalidReg. If no corresponding spill space has been assigned,
michael@0:     // then these registers do not need to be spilled.
michael@0:     Register spilledReg_;
michael@0:     FloatRegister spilledFloatReg_;
michael@0: 
michael@0:     void assertDone();
michael@0:     Register tempReg();
michael@0:     FloatRegister tempFloatReg();
michael@0:     Operand cycleSlot() const;
michael@0:     Operand spillSlot() const;
michael@0:     Operand toOperand(const MoveOperand &operand, bool isFloat) const;
michael@0: 
michael@0:     void emitMove(const MoveOperand &from, const MoveOperand &to);
michael@0:     void emitFloat32Move(const MoveOperand &from, const MoveOperand &to);
michael@0:     void emitDoubleMove(const MoveOperand &from, const MoveOperand &to);
michael@0:     void breakCycle(const MoveOperand &from, const MoveOperand &to, MoveOp::Type type);
michael@0:     void completeCycle(const MoveOperand &from, const MoveOperand &to, MoveOp::Type type);
michael@0:     void emit(const MoveOp &move);
michael@0: 
michael@0:   public:
michael@0:     MoveEmitterARM(MacroAssemblerARMCompat &masm);
michael@0:     ~MoveEmitterARM();
michael@0:     void emit(const MoveResolver &moves);
michael@0:     void finish();
michael@0: };
michael@0: 
michael@0: typedef MoveEmitterARM MoveEmitter;
michael@0: 
michael@0: } // namespace jit
michael@0: } // namespace js
michael@0: 
michael@0: #endif /* jit_arm_MoveEmitter_arm_h */