1 //===- subzero/src/IceTargetLoweringX8664.h - lowering for x86-64 -*- C++ -*-=//
2 //
3 //                        The Subzero Code Generator
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 ///
10 /// \file
11 /// \brief Declares the TargetLoweringX8664 class, which implements the
12 /// TargetLowering interface for the X86 64-bit architecture.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef SUBZERO_SRC_ICETARGETLOWERINGX8664_H
17 #define SUBZERO_SRC_ICETARGETLOWERINGX8664_H
18 
19 #include "IceAssemblerX8664.h"
20 #include "IceCfg.h"
21 #include "IceGlobalContext.h"
22 #include "IceInstX8664.h"
23 #include "IceTargetLowering.h"
24 #define X86NAMESPACE X8664
25 #include "IceTargetLoweringX86Base.h"
26 #undef X86NAMESPACE
27 #include "IceTargetLoweringX8664Traits.h"
28 
29 namespace Ice {
30 namespace X8664 {
31 
32 class TargetX8664 final : public X8664::TargetX86Base<X8664::Traits> {
33   TargetX8664() = delete;
34   TargetX8664(const TargetX8664 &) = delete;
35   TargetX8664 &operator=(const TargetX8664 &) = delete;
36 
37 public:
38   ~TargetX8664() = default;
39 
create(Cfg * Func)40   static std::unique_ptr<::Ice::TargetLowering> create(Cfg *Func) {
41     return makeUnique<TargetX8664>(Func);
42   }
43 
createAssembler()44   std::unique_ptr<::Ice::Assembler> createAssembler() const override {
45     const bool EmitAddrSizeOverridePrefix =
46         !NeedSandboxing &&
47         getFlags().getApplicationBinaryInterface() == ABI_PNaCl;
48     return makeUnique<X8664::AssemblerX8664>(EmitAddrSizeOverridePrefix);
49   }
50 
51 protected:
52   void _add_sp(Operand *Adjustment);
53   void _mov_sp(Operand *NewValue);
54   Traits::X86OperandMem *_sandbox_mem_reference(X86OperandMem *Mem);
55   void _sub_sp(Operand *Adjustment);
56   void _link_bp();
57   void _unlink_bp();
58   void _push_reg(Variable *Reg);
59 
60   void initRebasePtr();
61   void initSandbox();
62   bool legalizeOptAddrForSandbox(OptAddr *Addr);
63   void emitSandboxedReturn();
64   void lowerIndirectJump(Variable *JumpTarget);
65   void emitGetIP(CfgNode *Node);
66   Inst *emitCallToTarget(Operand *CallTarget, Variable *ReturnReg) override;
67   Variable *moveReturnValueToRegister(Operand *Value, Type ReturnType) override;
68 
69 private:
70   ENABLE_MAKE_UNIQUE;
71   friend class X8664::TargetX86Base<X8664::Traits>;
72 
TargetX8664(Cfg * Func)73   explicit TargetX8664(Cfg *Func) : TargetX86Base(Func) {}
74 
75   void _push_rbp();
76 
createNaClReadTPSrcOperand()77   Operand *createNaClReadTPSrcOperand() {
78     Variable *TDB = makeReg(IceType_i32);
79     InstCall *Call = makeHelperCall(RuntimeHelper::H_call_read_tp, TDB, 0);
80     lowerCall(Call);
81     return TDB;
82   }
83 };
84 
85 } // end of namespace X8664
86 } // end of namespace Ice
87 
88 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8664_H
89