MipsJITInfo.h revision 864f66085cd9543070ef01b9f7371c110ecd7898 
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
23namespace llvm {
24class MipsTargetMachine;
25
26class MipsJITInfo : public TargetJITInfo {
27
28  bool IsPIC;
29
30  public:
31    explicit MipsJITInfo() :
32      IsPIC(false) {}
33
34    /// replaceMachineCodeForFunction - Make it so that calling the function
35    /// whose machine code is at OLD turns into a call to NEW, perhaps by
36    /// overwriting OLD with a branch to NEW.  This is used for self-modifying
37    /// code.
38    ///
39    virtual void replaceMachineCodeForFunction(void *Old, void *New);
40
41    // getStubLayout - Returns the size and alignment of the largest call stub
42    // on Mips.
43    virtual StubLayout getStubLayout();
44
45    /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a
46    /// small native function that simply calls the function at the specified
47    /// address.
48    virtual void *emitFunctionStub(const Function *F, void *Fn,
49                                   JITCodeEmitter &JCE);
50
51    /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
52    virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
53
54    /// relocate - Before the JIT can run a block of code that has been emitted,
55    /// it must rewrite the code to contain the actual addresses of any
56    /// referenced global symbols.
57    virtual void relocate(void *Function, MachineRelocation *MR,
58                          unsigned NumRelocs, unsigned char *GOTBase);
59
60    /// Initialize - Initialize internal stage for the function being JITted.
61    void Initialize(const MachineFunction &MF, bool isPIC) {
62      IsPIC = isPIC;
63    }
64
65};
66}
67
68#endif
69