1//===- MipsJITInfo.h - Mips implementation of the JIT interface -*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains the declaration of the MipsJITInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef MIPSJITINFO_H
15#define MIPSJITINFO_H
16
17#include "MipsMachineFunction.h"
18#include "llvm/CodeGen/MachineConstantPool.h"
19#include "llvm/CodeGen/MachineFunction.h"
20#include "llvm/CodeGen/MachineJumpTableInfo.h"
21#include "llvm/Target/TargetJITInfo.h"
22#include "llvm/ADT/DenseMap.h"
23#include "llvm/ADT/SmallVector.h"
24
25namespace llvm {
26class MipsTargetMachine;
27
28class MipsJITInfo : public TargetJITInfo {
29
30  bool IsPIC;
31
32  public:
33    explicit MipsJITInfo() :
34      IsPIC(false) {}
35
36    /// replaceMachineCodeForFunction - Make it so that calling the function
37    /// whose machine code is at OLD turns into a call to NEW, perhaps by
38    /// overwriting OLD with a branch to NEW.  This is used for self-modifying
39    /// code.
40    ///
41    virtual void replaceMachineCodeForFunction(void *Old, void *New);
42
43    // getStubLayout - Returns the size and alignment of the largest call stub
44    // on Mips.
45    virtual StubLayout getStubLayout();
46
47    /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a
48    /// small native function that simply calls the function at the specified
49    /// address.
50    virtual void *emitFunctionStub(const Function* F, void *Fn,
51        JITCodeEmitter &JCE);
52
53    /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
54    virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
55
56    /// relocate - Before the JIT can run a block of code that has been emitted,
57    /// it must rewrite the code to contain the actual addresses of any
58    /// referenced global symbols.
59    virtual void relocate(void *Function, MachineRelocation *MR,
60        unsigned NumRelocs, unsigned char* GOTBase);
61
62    /// Initialize - Initialize internal stage for the function being JITted.
63    void Initialize(const MachineFunction &MF, bool isPIC) {
64      IsPIC = isPIC;
65    }
66
67};
68}
69
70#endif
71