michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef jit_MoveEmitter_x86_shared_h
michael@0: #define jit_MoveEmitter_x86_shared_h
michael@0: 
michael@0: #if defined(JS_CODEGEN_X86)
michael@0: # include "jit/x86/MacroAssembler-x86.h"
michael@0: #elif defined(JS_CODEGEN_X64)
michael@0: # include "jit/x64/MacroAssembler-x64.h"
michael@0: #else
michael@0: # error "Wrong architecture. Only x86 and x64 should build this file!"
michael@0: #endif
michael@0: #include "jit/MoveResolver.h"
michael@0: 
michael@0: namespace js {
michael@0: namespace jit {
michael@0: 
michael@0: class CodeGenerator;
michael@0: 
michael@0: class MoveEmitterX86
michael@0: {
michael@0:     bool inCycle_;
michael@0:     MacroAssemblerSpecific &masm;
michael@0: 
michael@0:     // Original stack push value.
michael@0:     uint32_t pushedAtStart_;
michael@0: 
michael@0:     // This is a store stack offset for the cycle-break spill slot, snapshotting
michael@0:     // codegen->framePushed_ at the time it is allocated. -1 if not allocated.
michael@0:     int32_t pushedAtCycle_;
michael@0: 
michael@0:     void assertDone();
michael@0:     Address cycleSlot();
michael@0:     Address toAddress(const MoveOperand &operand) const;
michael@0:     Operand toOperand(const MoveOperand &operand) const;
michael@0:     Operand toPopOperand(const MoveOperand &operand) const;
michael@0: 
michael@0:     size_t characterizeCycle(const MoveResolver &moves, size_t i,
michael@0:                              bool *allGeneralRegs, bool *allFloatRegs);
michael@0:     bool maybeEmitOptimizedCycle(const MoveResolver &moves, size_t i,
michael@0:                                  bool allGeneralRegs, bool allFloatRegs, size_t swapCount);
michael@0:     void emitInt32Move(const MoveOperand &from, const MoveOperand &to);
michael@0:     void emitGeneralMove(const MoveOperand &from, const MoveOperand &to);
michael@0:     void emitFloat32Move(const MoveOperand &from, const MoveOperand &to);
michael@0:     void emitDoubleMove(const MoveOperand &from, const MoveOperand &to);
michael@0:     void breakCycle(const MoveOperand &to, MoveOp::Type type);
michael@0:     void completeCycle(const MoveOperand &to, MoveOp::Type type);
michael@0: 
michael@0:   public:
michael@0:     MoveEmitterX86(MacroAssemblerSpecific &masm);
michael@0:     ~MoveEmitterX86();
michael@0:     void emit(const MoveResolver &moves);
michael@0:     void finish();
michael@0: };
michael@0: 
michael@0: typedef MoveEmitterX86 MoveEmitter;
michael@0: 
michael@0: } // ion
michael@0: } // js
michael@0: 
michael@0: #endif /* jit_MoveEmitter_x86_shared_h */