ELFDynObjFileFormat.cpp revision 22add6ff3426df1a85089fe6a6e1597ee3b6f300 
1//===- ELFDynObjFileFormat.cpp --------------------------------------------===//
2//
3//                     The MCLinker Project
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9#include <mcld/LD/ELFDynObjFileFormat.h>
10#include <mcld/LD/LDSection.h>
11#include <mcld/Object/ObjectBuilder.h>
12
13#include <llvm/Support/ELF.h>
14
15using namespace mcld;
16
17void ELFDynObjFileFormat::initObjectFormat(ObjectBuilder& pBuilder,
18                                           unsigned int pBitClass)
19{
20  f_pDynSymTab    = pBuilder.CreateSection(".dynsym",
21                                           LDFileFormat::NamePool,
22                                           llvm::ELF::SHT_DYNSYM,
23                                           llvm::ELF::SHF_ALLOC,
24                                           pBitClass / 8);
25  f_pDynStrTab    = pBuilder.CreateSection(".dynstr",
26                                           LDFileFormat::NamePool,
27                                           llvm::ELF::SHT_STRTAB,
28                                           llvm::ELF::SHF_ALLOC,
29                                           0x1);
30  f_pInterp       = pBuilder.CreateSection(".interp",
31                                           LDFileFormat::Note,
32                                           llvm::ELF::SHT_PROGBITS,
33                                           llvm::ELF::SHF_ALLOC,
34                                           0x1);
35  f_pHashTab      = pBuilder.CreateSection(".hash",
36                                           LDFileFormat::NamePool,
37                                           llvm::ELF::SHT_HASH,
38                                           llvm::ELF::SHF_ALLOC,
39                                           pBitClass / 8);
40  f_pDynamic      = pBuilder.CreateSection(".dynamic",
41                                           LDFileFormat::NamePool,
42                                           llvm::ELF::SHT_DYNAMIC,
43                                           llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_WRITE,
44                                           pBitClass / 8);
45  f_pRelaDyn      = pBuilder.CreateSection(".rela.dyn",
46                                           LDFileFormat::Relocation,
47                                           llvm::ELF::SHT_RELA,
48                                           llvm::ELF::SHF_ALLOC,
49                                           pBitClass / 8);
50  f_pRelaPlt      = pBuilder.CreateSection(".rela.plt",
51                                           LDFileFormat::Relocation,
52                                           llvm::ELF::SHT_RELA,
53                                           llvm::ELF::SHF_ALLOC,
54                                           pBitClass / 8);
55  f_pRelDyn      = pBuilder.CreateSection(".rel.dyn",
56                                           LDFileFormat::Relocation,
57                                           llvm::ELF::SHT_REL,
58                                           llvm::ELF::SHF_ALLOC,
59                                           pBitClass / 8);
60  f_pRelPlt      = pBuilder.CreateSection(".rel.plt",
61                                           LDFileFormat::Relocation,
62                                           llvm::ELF::SHT_REL,
63                                           llvm::ELF::SHF_ALLOC,
64                                           pBitClass / 8);
65  f_pGOT          = pBuilder.CreateSection(".got",
66                                           LDFileFormat::Target,
67                                           llvm::ELF::SHT_PROGBITS,
68                                           llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_WRITE,
69                                           pBitClass / 8);
70  f_pPLT          = pBuilder.CreateSection(".plt",
71                                           LDFileFormat::Target,
72                                           llvm::ELF::SHT_PROGBITS,
73                                           llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_EXECINSTR,
74                                           pBitClass / 8);
75  f_pGOTPLT       = pBuilder.CreateSection(".got.plt",
76                                           LDFileFormat::Target,
77                                           llvm::ELF::SHT_PROGBITS,
78                                           llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_WRITE,
79                                           pBitClass / 8);
80  f_pEhFrameHdr     = pBuilder.CreateSection(".eh_frame_hdr",
81                                              LDFileFormat::EhFrameHdr,
82                                              llvm::ELF::SHT_PROGBITS,
83                                              llvm::ELF::SHF_ALLOC,
84                                              0x4);
85}
86
87