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 namespace mcld { 16 17 void ELFExecFileFormat::initObjectFormat(ObjectBuilder& pBuilder, 18 unsigned int pBitClass) { 19 // FIXME: make sure ELF executable files has these sections. 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 = 41 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 = 72 pBuilder.CreateSection(".plt", 73 LDFileFormat::Target, 74 llvm::ELF::SHT_PROGBITS, 75 llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_EXECINSTR, 76 pBitClass / 8); 77 f_pGOTPLT = 78 pBuilder.CreateSection(".got.plt", 79 LDFileFormat::Target, 80 llvm::ELF::SHT_PROGBITS, 81 llvm::ELF::SHF_ALLOC | llvm::ELF::SHF_WRITE, 82 pBitClass / 8); 83 f_pEhFrameHdr = pBuilder.CreateSection(".eh_frame_hdr", 84 LDFileFormat::EhFrameHdr, 85 llvm::ELF::SHT_PROGBITS, 86 llvm::ELF::SHF_ALLOC, 87 0x4); 88 f_pGNUHashTab = pBuilder.CreateSection(".gnu.hash", 89 LDFileFormat::NamePool, 90 llvm::ELF::SHT_GNU_HASH, 91 llvm::ELF::SHF_ALLOC, 92 pBitClass / 8); 93 } 94 95 } // namespace mcld 96
