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/* -*- 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_mips_shared_MoveEmitter_mips_shared_h
#define jit_mips_shared_MoveEmitter_mips_shared_h
#include "jit/MacroAssembler.h"
#include "jit/MoveResolver.h"
namespace js {
namespace jit {
class MoveEmitterMIPSShared {
protected:
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 = 0) const;
int32_t getAdjustedOffset(const MoveOperand& operand);
Address getAdjustedAddress(const MoveOperand& operand);
void emitMove(const MoveOperand& from, const MoveOperand& to);
void emitInt32Move(const MoveOperand& from, const MoveOperand& to);
void emitFloat32Move(const MoveOperand& from, const MoveOperand& to);
virtual void emitDoubleMove(const MoveOperand& from,
const MoveOperand& to) = 0;
virtual void breakCycle(const MoveOperand& from, const MoveOperand& to,
MoveOp::Type type, uint32_t slot) = 0;
virtual void completeCycle(const MoveOperand& from, const MoveOperand& to,
MoveOp::Type type, uint32_t slot) = 0;
void emit(const MoveOp& move);
public:
MoveEmitterMIPSShared(MacroAssembler& masm)
: inCycle_(0),
masm(masm),
pushedAtStart_(masm.framePushed()),
pushedAtCycle_(-1),
pushedAtSpill_(-1),
spilledReg_(InvalidReg),
spilledFloatReg_(InvalidFloatReg) {}
~MoveEmitterMIPSShared() { assertDone(); }
void emit(const MoveResolver& moves);
void finish();
void setScratchRegister(Register reg) {}
};
} // namespace jit
} // namespace js
#endif /* jit_mips_shared_MoveEmitter_mips_shared_h */