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 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
