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| 1 //===-- X86ELFWriterInfo.cpp - ELF Writer Info for the X86 backend --------===// | 1 //===-- X86ELFWriterInfo.cpp - ELF Writer Info for the X86 backend --------===// |
| 2 // | 2 // |
| 3 // The LLVM Compiler Infrastructure | 3 // The LLVM Compiler Infrastructure |
| 4 // | 4 // |
| 5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
| 6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
| 7 // | 7 // |
| 8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
| 9 // | 9 // |
| 10 // This file implements ELF writer information for the X86 backend. | 10 // This file implements ELF writer information for the X86 backend. |
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| 24 // Implementation of the X86ELFWriterInfo class | 24 // Implementation of the X86ELFWriterInfo class |
| 25 //===----------------------------------------------------------------------===// | 25 //===----------------------------------------------------------------------===// |
| 26 | 26 |
| 27 X86ELFWriterInfo::X86ELFWriterInfo(bool is64Bit_, bool isLittleEndian_) | 27 X86ELFWriterInfo::X86ELFWriterInfo(bool is64Bit_, bool isLittleEndian_) |
| 28 : TargetELFWriterInfo(is64Bit_, isLittleEndian_) { | 28 : TargetELFWriterInfo(is64Bit_, isLittleEndian_) { |
| 29 EMachine = is64Bit ? EM_X86_64 : EM_386; | 29 EMachine = is64Bit ? EM_X86_64 : EM_386; |
| 30 } | 30 } |
| 31 | 31 |
| 32 X86ELFWriterInfo::~X86ELFWriterInfo() {} | 32 X86ELFWriterInfo::~X86ELFWriterInfo() {} |
| 33 | 33 |
| 34 unsigned X86ELFWriterInfo::getRelocationType(unsigned MachineRelTy) const { | 34 unsigned X86ELFWriterInfo::getRelocationType(const BinaryObject &, |
| 35 const MachineRelocation &MR) const
{ |
| 36 unsigned int MachineRelTy = MR.getRelocationType(); |
| 35 if (is64Bit) { | 37 if (is64Bit) { |
| 36 switch(MachineRelTy) { | 38 switch(MachineRelTy) { |
| 37 case X86::reloc_pcrel_word: | 39 case X86::reloc_pcrel_word: |
| 38 return R_X86_64_PC32; | 40 return R_X86_64_PC32; |
| 39 case X86::reloc_absolute_word: | 41 case X86::reloc_absolute_word: |
| 40 return R_X86_64_32; | 42 return R_X86_64_32; |
| 41 case X86::reloc_absolute_word_sext: | 43 case X86::reloc_absolute_word_sext: |
| 42 return R_X86_64_32S; | 44 return R_X86_64_32S; |
| 43 case X86::reloc_absolute_dword: | 45 case X86::reloc_absolute_dword: |
| 44 return R_X86_64_64; | 46 return R_X86_64_64; |
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| 143 unsigned RelOffset, | 145 unsigned RelOffset, |
| 144 unsigned RelTy) const { | 146 unsigned RelTy) const { |
| 145 | 147 |
| 146 if (RelTy == R_X86_64_PC32 || RelTy == R_386_PC32) | 148 if (RelTy == R_X86_64_PC32 || RelTy == R_386_PC32) |
| 147 return SymOffset - (RelOffset + 4); | 149 return SymOffset - (RelOffset + 4); |
| 148 else | 150 else |
| 149 assert("computeRelocation unknown for this relocation type"); | 151 assert("computeRelocation unknown for this relocation type"); |
| 150 | 152 |
| 151 return 0; | 153 return 0; |
| 152 } | 154 } |
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