aboutsummaryrefslogtreecommitdiffstats
path: root/include/llvm/Object/Binary.h
blob: 9be2fbe08371bb46eab3ffebe21d19778774ca69 (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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
//===- Binary.h - A generic binary file -------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the Binary class.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_OBJECT_BINARY_H
#define LLVM_OBJECT_BINARY_H

#include "llvm/Object/Error.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/FileSystem.h"

namespace llvm {

class LLVMContext;
class MemoryBuffer;
class StringRef;

namespace object {

class Binary {
private:
  Binary() LLVM_DELETED_FUNCTION;
  Binary(const Binary &other) LLVM_DELETED_FUNCTION;

  unsigned int TypeID;

protected:
  std::unique_ptr<MemoryBuffer> Data;

  Binary(unsigned int Type, std::unique_ptr<MemoryBuffer> Source);

  enum {
    ID_Archive,
    ID_MachOUniversalBinary,
    ID_IR, // LLVM IR

    // Object and children.
    ID_StartObjects,
    ID_COFF,

    ID_ELF32L, // ELF 32-bit, little endian
    ID_ELF32B, // ELF 32-bit, big endian
    ID_ELF64L, // ELF 64-bit, little endian
    ID_ELF64B, // ELF 64-bit, big endian

    ID_MachO32L, // MachO 32-bit, little endian
    ID_MachO32B, // MachO 32-bit, big endian
    ID_MachO64L, // MachO 64-bit, little endian
    ID_MachO64B, // MachO 64-bit, big endian

    ID_EndObjects
  };

  static inline unsigned int getELFType(bool isLE, bool is64Bits) {
    if (isLE)
      return is64Bits ? ID_ELF64L : ID_ELF32L;
    else
      return is64Bits ? ID_ELF64B : ID_ELF32B;
  }

  static unsigned int getMachOType(bool isLE, bool is64Bits) {
    if (isLE)
      return is64Bits ? ID_MachO64L : ID_MachO32L;
    else
      return is64Bits ? ID_MachO64B : ID_MachO32B;
  }

public:
  virtual ~Binary();

  StringRef getData() const;
  MemoryBuffer *releaseBuffer() { return Data.release(); }
  StringRef getFileName() const;

  // Cast methods.
  unsigned int getType() const { return TypeID; }

  // Convenience methods
  bool isObject() const {
    return TypeID > ID_StartObjects && TypeID < ID_EndObjects;
  }

  bool isSymbolic() const {
    return isIR() || isObject();
  }

  bool isArchive() const {
    return TypeID == ID_Archive;
  }

  bool isMachOUniversalBinary() const {
    return TypeID == ID_MachOUniversalBinary;
  }

  bool isELF() const {
    return TypeID >= ID_ELF32L && TypeID <= ID_ELF64B;
  }

  bool isMachO() const {
    return TypeID >= ID_MachO32L && TypeID <= ID_MachO64B;
  }

  bool isCOFF() const {
    return TypeID == ID_COFF;
  }

  bool isIR() const {
    return TypeID == ID_IR;
  }

  bool isLittleEndian() const {
    return !(TypeID == ID_ELF32B || TypeID == ID_ELF64B ||
             TypeID == ID_MachO32B || TypeID == ID_MachO64B);
  }
};

/// @brief Create a Binary from Source, autodetecting the file type.
///
/// @param Source The data to create the Binary from. Ownership is transferred
///        to the Binary if successful. If an error is returned,
///        Source is destroyed by createBinary before returning.
ErrorOr<Binary *> createBinary(std::unique_ptr<MemoryBuffer> &Source,
                               LLVMContext *Context = nullptr);

ErrorOr<Binary *> createBinary(StringRef Path);
}
}

#endif