1 //===- ELFExecFileFormat.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/ELFExecFileFormat.h>
10 #include <mcld/LD/LDSection.h>
11 #include <mcld/Object/ObjectBuilder.h>
12
13 #include <llvm/Support/ELF.h>
14
15 using namespace mcld;
16
initObjectFormat(ObjectBuilder & pBuilder,unsigned int pBitClass)17 void ELFExecFileFormat::initObjectFormat(ObjectBuilder& pBuilder,
18 unsigned int pBitClass)
19 {
20 // FIXME: make sure ELF executable files has these sections.
21 f_pDynSymTab = pBuilder.CreateSection(".dynsym",
22 LDFileFormat::NamePool,
23 llvm::ELF::SHT_DYNSYM,
24 llvm::ELF::SHF_ALLOC,
25 pBitClass / 8);
26 f_pDynStrTab = pBuilder.CreateSection(".dynstr",
27 LDFileFormat::NamePool,
28 llvm::ELF::SHT_STRTAB,
29 llvm::ELF::SHF_ALLOC,
30 0x1);
31 f_pInterp = pBuilder.CreateSection(".interp",
32 LDFileFormat::Note,
33 llvm::ELF::SHT_PROGBITS,
34 llvm::ELF::SHF_ALLOC,
35 0x1);
36 f_pHashTab = pBuilder.CreateSection(".hash",
37 LDFileFormat::NamePool,
38 llvm::ELF::SHT_HASH,
39 llvm::ELF::SHF_ALLOC,
40 pBitClass / 8);
41 f_pDynamic = pBuilder.CreateSection(".dynamic",
42 LDFileFormat::NamePool,
43 llvm::ELF::SHT_DYNAMIC,
44 llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_WRITE,
45 pBitClass / 8);
46 f_pRelaDyn = pBuilder.CreateSection(".rela.dyn",
47 LDFileFormat::Relocation,
48 llvm::ELF::SHT_RELA,
49 llvm::ELF::SHF_ALLOC,
50 pBitClass / 8);
51 f_pRelaPlt = pBuilder.CreateSection(".rela.plt",
52 LDFileFormat::Relocation,
53 llvm::ELF::SHT_RELA,
54 llvm::ELF::SHF_ALLOC,
55 pBitClass / 8);
56 f_pRelDyn = pBuilder.CreateSection(".rel.dyn",
57 LDFileFormat::Relocation,
58 llvm::ELF::SHT_REL,
59 llvm::ELF::SHF_ALLOC,
60 pBitClass / 8);
61 f_pRelPlt = pBuilder.CreateSection(".rel.plt",
62 LDFileFormat::Relocation,
63 llvm::ELF::SHT_REL,
64 llvm::ELF::SHF_ALLOC,
65 pBitClass / 8);
66 f_pGOT = pBuilder.CreateSection(".got",
67 LDFileFormat::Target,
68 llvm::ELF::SHT_PROGBITS,
69 llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_WRITE,
70 pBitClass / 8);
71 f_pPLT = pBuilder.CreateSection(".plt",
72 LDFileFormat::Target,
73 llvm::ELF::SHT_PROGBITS,
74 llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_EXECINSTR,
75 pBitClass / 8);
76 f_pGOTPLT = pBuilder.CreateSection(".got.plt",
77 LDFileFormat::Target,
78 llvm::ELF::SHT_PROGBITS,
79 llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_WRITE,
80 pBitClass / 8);
81 f_pEhFrameHdr = pBuilder.CreateSection(".eh_frame_hdr",
82 LDFileFormat::EhFrameHdr,
83 llvm::ELF::SHT_PROGBITS,
84 llvm::ELF::SHF_ALLOC,
85 0x4);
86 f_pGNUHashTab = pBuilder.CreateSection(".gnu.hash",
87 LDFileFormat::NamePool,
88 llvm::ELF::SHT_GNU_HASH,
89 llvm::ELF::SHF_ALLOC,
90 pBitClass / 8);
91 }
92