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MoveEmitter-loong64.h (2536B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
      2 * vim: set ts=8 sts=2 et sw=2 tw=80:
      3 * This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef jit_loong64_MoveEmitter_loong64_h
      8 #define jit_loong64_MoveEmitter_loong64_h
      9 
     10 #include "jit/MacroAssembler.h"
     11 #include "jit/MoveResolver.h"
     12 
     13 namespace js {
     14 namespace jit {
     15 
     16 class MoveEmitterLOONG64 {
     17  void emitDoubleMove(const MoveOperand& from, const MoveOperand& to);
     18  void breakCycle(const MoveOperand& from, const MoveOperand& to,
     19                  MoveOp::Type type, uint32_t slot);
     20  void completeCycle(const MoveOperand& from, const MoveOperand& to,
     21                     MoveOp::Type type, uint32_t slot);
     22 
     23 protected:
     24  uint32_t inCycle_;
     25  MacroAssembler& masm;
     26 
     27  // Original stack push value.
     28  uint32_t pushedAtStart_;
     29 
     30  // These store stack offsets to spill locations, snapshotting
     31  // codegen->framePushed_ at the time they were allocated. They are -1 if no
     32  // stack space has been allocated for that particular spill.
     33  int32_t pushedAtCycle_;
     34  int32_t pushedAtSpill_;
     35 
     36  // These are registers that are available for temporary use. They may be
     37  // assigned InvalidReg. If no corresponding spill space has been assigned,
     38  // then these registers do not need to be spilled.
     39  Register spilledReg_;
     40  FloatRegister spilledFloatReg_;
     41 
     42  void assertDone();
     43  Register tempReg();
     44  FloatRegister tempFloatReg();
     45  Address cycleSlot(uint32_t slot, uint32_t subslot = 0) const;
     46  int32_t getAdjustedOffset(const MoveOperand& operand);
     47  Address getAdjustedAddress(const MoveOperand& operand);
     48 
     49  void emitMove(const MoveOperand& from, const MoveOperand& to);
     50  void emitInt32Move(const MoveOperand& from, const MoveOperand& to);
     51  void emitFloat32Move(const MoveOperand& from, const MoveOperand& to);
     52  void emit(const MoveOp& move);
     53 
     54 public:
     55  explicit MoveEmitterLOONG64(MacroAssembler& masm)
     56      : inCycle_(0),
     57        masm(masm),
     58        pushedAtStart_(masm.framePushed()),
     59        pushedAtCycle_(-1),
     60        pushedAtSpill_(-1),
     61        spilledReg_(InvalidReg),
     62        spilledFloatReg_(InvalidFloatReg) {}
     63 
     64  ~MoveEmitterLOONG64() { assertDone(); }
     65 
     66  void emit(const MoveResolver& moves);
     67  void finish();
     68  void setScratchRegister(Register reg) {}
     69 };
     70 
     71 typedef MoveEmitterLOONG64 MoveEmitter;
     72 
     73 }  // namespace jit
     74 }  // namespace js
     75 
     76 #endif /* jit_loong64_MoveEmitter_loong64_h */