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| 1 //===-- X86ELFWriterInfo.h - ELF Writer Info for X86 ------------*- C++ -*-===// | 1 //===-- X86ELFWriterInfo.h - ELF Writer Info for X86 ------------*- C++ -*-===// |
| 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. |
| 11 // | 11 // |
| 12 //===----------------------------------------------------------------------===// | 12 //===----------------------------------------------------------------------===// |
| 13 | 13 |
| 14 #ifndef X86_ELF_WRITER_INFO_H | 14 #ifndef X86_ELF_WRITER_INFO_H |
| 15 #define X86_ELF_WRITER_INFO_H | 15 #define X86_ELF_WRITER_INFO_H |
| 16 | 16 |
| 17 #include "llvm/Target/TargetELFWriterInfo.h" | 17 #include "llvm/Target/TargetELFWriterInfo.h" |
| 18 | 18 |
| 19 namespace llvm { | 19 namespace llvm { |
| 20 | 20 class BinaryObject; |
| 21 class MachineRelocation; |
| 21 class X86ELFWriterInfo : public TargetELFWriterInfo { | 22 class X86ELFWriterInfo : public TargetELFWriterInfo { |
| 22 | 23 |
| 23 // ELF Relocation types for X86 | 24 // ELF Relocation types for X86 |
| 24 enum X86RelocationType { | 25 enum X86RelocationType { |
| 25 R_386_NONE = 0, | 26 R_386_NONE = 0, |
| 26 R_386_32 = 1, | 27 R_386_32 = 1, |
| 27 R_386_PC32 = 2 | 28 R_386_PC32 = 2 |
| 28 }; | 29 }; |
| 29 | 30 |
| 30 // ELF Relocation types for X86_64 | 31 // ELF Relocation types for X86_64 |
| 31 enum X86_64RelocationType { | 32 enum X86_64RelocationType { |
| 32 R_X86_64_NONE = 0, | 33 R_X86_64_NONE = 0, |
| 33 R_X86_64_64 = 1, | 34 R_X86_64_64 = 1, |
| 34 R_X86_64_PC32 = 2, | 35 R_X86_64_PC32 = 2, |
| 35 R_X86_64_32 = 10, | 36 R_X86_64_32 = 10, |
| 36 R_X86_64_32S = 11, | 37 R_X86_64_32S = 11, |
| 37 R_X86_64_PC64 = 24 | 38 R_X86_64_PC64 = 24 |
| 38 }; | 39 }; |
| 39 | 40 |
| 40 public: | 41 public: |
| 41 X86ELFWriterInfo(bool is64Bit_, bool isLittleEndian_); | 42 X86ELFWriterInfo(bool is64Bit_, bool isLittleEndian_); |
| 42 virtual ~X86ELFWriterInfo(); | 43 virtual ~X86ELFWriterInfo(); |
| 43 | 44 |
| 44 /// getRelocationType - Returns the target specific ELF Relocation type. | 45 /// getRelocationType - Returns the target specific ELF Relocation type. |
| 45 /// 'MachineRelTy' contains the object code independent relocation type | 46 /// S is the ELF section blob that contains the relocation |
| 46 virtual unsigned getRelocationType(unsigned MachineRelTy) const; | 47 /// MR contains the object code independent relocation type |
| 48 virtual unsigned getRelocationType(const BinaryObject &S, |
| 49 const MachineRelocation &MR) const; |
| 47 | 50 |
| 48 /// hasRelocationAddend - True if the target uses an addend in the | 51 /// hasRelocationAddend - True if the target uses an addend in the |
| 49 /// ELF relocation entry. | 52 /// ELF relocation entry. |
| 50 virtual bool hasRelocationAddend() const { return is64Bit ? true : false; } | 53 virtual bool hasRelocationAddend() const { return is64Bit ? true : false; } |
| 51 | 54 |
| 52 /// getDefaultAddendForRelTy - Gets the default addend value for a | 55 /// getDefaultAddendForRelTy - Gets the default addend value for a |
| 53 /// relocation entry based on the target ELF relocation type. | 56 /// relocation entry based on the target ELF relocation type. |
| 54 virtual long int getDefaultAddendForRelTy(unsigned RelTy, | 57 virtual long int getDefaultAddendForRelTy(unsigned RelTy, |
| 55 long int Modifier = 0) const; | 58 long int Modifier = 0) const; |
| 56 | 59 |
| (...skipping 10 matching lines...) Expand all Loading... |
| 67 /// computeRelocation - Some relocatable fields could be relocated | 70 /// computeRelocation - Some relocatable fields could be relocated |
| 68 /// directly, avoiding the relocation symbol emission, compute the | 71 /// directly, avoiding the relocation symbol emission, compute the |
| 69 /// final relocation value for this symbol. | 72 /// final relocation value for this symbol. |
| 70 virtual long int computeRelocation(unsigned SymOffset, unsigned RelOffset, | 73 virtual long int computeRelocation(unsigned SymOffset, unsigned RelOffset, |
| 71 unsigned RelTy) const; | 74 unsigned RelTy) const; |
| 72 }; | 75 }; |
| 73 | 76 |
| 74 } // end llvm namespace | 77 } // end llvm namespace |
| 75 | 78 |
| 76 #endif // X86_ELF_WRITER_INFO_H | 79 #endif // X86_ELF_WRITER_INFO_H |
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