| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| * vim: set ts=8 sts=4 et sw=4 tw=99: |
| * 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 */ |