aboutsummaryrefslogtreecommitdiffstats
path: root/lib/Target/Mips/MipsJITInfo.h
blob: ecda3101a0031b668731414b7e258b0a541b45cc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
//===- MipsJITInfo.h - Mips Implementation of the JIT Interface -*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the MipsJITInfo class.
//
//===----------------------------------------------------------------------===//

#ifndef MIPSJITINFO_H
#define MIPSJITINFO_H

#include "MipsMachineFunction.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/Target/TargetJITInfo.h"

namespace llvm {
class MipsTargetMachine;

class MipsJITInfo : public TargetJITInfo {

  bool IsPIC;
  bool IsLittleEndian;

  public:
    explicit MipsJITInfo() :
      IsPIC(false), IsLittleEndian(true) {}

    /// replaceMachineCodeForFunction - Make it so that calling the function
    /// whose machine code is at OLD turns into a call to NEW, perhaps by
    /// overwriting OLD with a branch to NEW.  This is used for self-modifying
    /// code.
    ///
    virtual void replaceMachineCodeForFunction(void *Old, void *New);

    // getStubLayout - Returns the size and alignment of the largest call stub
    // on Mips.
    virtual StubLayout getStubLayout();

    /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a
    /// small native function that simply calls the function at the specified
    /// address.
    virtual void *emitFunctionStub(const Function *F, void *Fn,
                                   JITCodeEmitter &JCE);

    /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
    virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);

    /// relocate - Before the JIT can run a block of code that has been emitted,
    /// it must rewrite the code to contain the actual addresses of any
    /// referenced global symbols.
    virtual void relocate(void *Function, MachineRelocation *MR,
                          unsigned NumRelocs, unsigned char *GOTBase);

    /// Initialize - Initialize internal stage for the function being JITted.
    void Initialize(const MachineFunction &MF, bool isPIC,
                    bool isLittleEndian) {
      IsPIC = isPIC;
      IsLittleEndian = isLittleEndian;
    }

};
}

#endif