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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_arm64_MoveEmitter_arm64_h
#define jit_arm64_MoveEmitter_arm64_h
#include "jit/arm64/Assembler-arm64.h"
#include "jit/MacroAssembler.h"
#include "jit/MoveResolver.h"
namespace js {
namespace jit {
class CodeGenerator;
class MoveEmitterARM64
{
bool 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_;
void assertDone() {
MOZ_ASSERT(!inCycle_);
}
MemOperand cycleSlot();
MemOperand toMemOperand(const MoveOperand& operand) const;
ARMRegister toARMReg32(const MoveOperand& operand) const {
MOZ_ASSERT(operand.isGeneralReg());
return ARMRegister(operand.reg(), 32);
}
ARMRegister toARMReg64(const MoveOperand& operand) const {
if (operand.isGeneralReg())
return ARMRegister(operand.reg(), 64);
else
return ARMRegister(operand.base(), 64);
}
ARMFPRegister toFPReg(const MoveOperand& operand, MoveOp::Type t) const {
MOZ_ASSERT(operand.isFloatReg());
return ARMFPRegister(operand.floatReg().encoding(), t == MoveOp::FLOAT32 ? 32 : 64);
}
void emitFloat32Move(const MoveOperand& from, const MoveOperand& to);
void emitDoubleMove(const MoveOperand& from, const MoveOperand& to);
void emitInt32Move(const MoveOperand& from, const MoveOperand& to);
void emitGeneralMove(const MoveOperand& from, const MoveOperand& to);
void emitMove(const MoveOp& move);
void breakCycle(const MoveOperand& from, const MoveOperand& to, MoveOp::Type type);
void completeCycle(const MoveOperand& from, const MoveOperand& to, MoveOp::Type type);
public:
MoveEmitterARM64(MacroAssembler& masm)
: inCycle_(false),
masm(masm),
pushedAtStart_(masm.framePushed()),
pushedAtCycle_(-1),
pushedAtSpill_(-1)
{ }
~MoveEmitterARM64() {
assertDone();
}
void emit(const MoveResolver& moves);
void finish();
void setScratchRegister(Register reg) {}
};
typedef MoveEmitterARM64 MoveEmitter;
} // namespace jit
} // namespace js
#endif /* jit_arm64_MoveEmitter_arm64_h */
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