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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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_MoveEmitter_arm_h
#define jit_arm_MoveEmitter_arm_h
#include "jit/MacroAssembler.h"
#include "jit/MoveResolver.h"
namespace js {
namespace jit {
class MoveEmitterARM
{
uint32_t inCycle_;
MacroAssembler& masm;
// Original stack push value.
uint32_t pushedAtStart_;
// These store stack offsets to spill locations, snapshotting
// codegen->framePushed_ at the time they were allocated. They are -1 if no
// stack space has been allocated for that particular spill.
int32_t pushedAtCycle_;
int32_t pushedAtSpill_;
// These are registers that are available for temporary use. They may be
// assigned InvalidReg. If no corresponding spill space has been assigned,
// then these registers do not need to be spilled.
Register spilledReg_;
FloatRegister spilledFloatReg_;
void assertDone();
Register tempReg();
FloatRegister tempFloatReg();
Address cycleSlot(uint32_t slot, uint32_t subslot) const;
Address spillSlot() const;
Address toAddress(const MoveOperand& operand) const;
void emitMove(const MoveOperand& from, const MoveOperand& to);
void emitFloat32Move(const MoveOperand& from, const MoveOperand& to);
void emitDoubleMove(const MoveOperand& from, const MoveOperand& to);
void breakCycle(const MoveOperand& from, const MoveOperand& to,
MoveOp::Type type, uint32_t slot);
void completeCycle(const MoveOperand& from, const MoveOperand& to,
MoveOp::Type type, uint32_t slot);
void emit(const MoveOp& move);
public:
MoveEmitterARM(MacroAssembler& masm);
~MoveEmitterARM();
void emit(const MoveResolver& moves);
void finish();
void setScratchRegister(Register reg) {}
};
typedef MoveEmitterARM MoveEmitter;
} // namespace jit
} // namespace js
#endif /* jit_arm_MoveEmitter_arm_h */
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