1 //===-- X86ELFWriterInfo.h - ELF Writer Info for X86 ------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements ELF writer information for the X86 backend.
12 //===----------------------------------------------------------------------===//
14 #ifndef X86_ELF_WRITER_INFO_H
15 #define X86_ELF_WRITER_INFO_H
17 #include "llvm/Target/TargetELFWriterInfo.h"
21 class X86ELFWriterInfo
: public TargetELFWriterInfo
{
24 X86ELFWriterInfo(bool is64Bit_
, bool isLittleEndian_
);
25 virtual ~X86ELFWriterInfo();
27 /// getRelocationType - Returns the target specific ELF Relocation type.
28 /// 'MachineRelTy' contains the object code independent relocation type
29 virtual unsigned getRelocationType(unsigned MachineRelTy
) const;
31 /// hasRelocationAddend - True if the target uses an addend in the
32 /// ELF relocation entry.
33 virtual bool hasRelocationAddend() const { return is64Bit
? true : false; }
35 /// getDefaultAddendForRelTy - Gets the default addend value for a
36 /// relocation entry based on the target ELF relocation type.
37 virtual long int getDefaultAddendForRelTy(unsigned RelTy
,
38 long int Modifier
= 0) const;
40 /// getRelTySize - Returns the size of relocatable field in bits
41 virtual unsigned getRelocationTySize(unsigned RelTy
) const;
43 /// isPCRelativeRel - True if the relocation type is pc relative
44 virtual bool isPCRelativeRel(unsigned RelTy
) const;
46 /// getJumpTableRelocationTy - Returns the machine relocation type used
47 /// to reference a jumptable.
48 virtual unsigned getAbsoluteLabelMachineRelTy() const;
50 /// computeRelocation - Some relocatable fields could be relocated
51 /// directly, avoiding the relocation symbol emission, compute the
52 /// final relocation value for this symbol.
53 virtual long int computeRelocation(unsigned SymOffset
, unsigned RelOffset
,
54 unsigned RelTy
) const;
57 } // end llvm namespace
59 #endif // X86_ELF_WRITER_INFO_H