1 //===-- ARMELFWriterInfo.h - ELF Writer Info for ARM ------------*- 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 ARM backend.
12 //===----------------------------------------------------------------------===//
14 #ifndef ARM_ELF_WRITER_INFO_H
15 #define ARM_ELF_WRITER_INFO_H
17 #include "llvm/Target/TargetELFWriterInfo.h"
22 class ARMELFWriterInfo : public TargetELFWriterInfo {
24 ARMELFWriterInfo(TargetMachine &TM);
25 virtual ~ARMELFWriterInfo();
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 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 // ARM_ELF_WRITER_INFO_H