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//===-- MBlazeELFWriterInfo.h - ELF Writer Info for MBlaze ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements ELF writer information for the MBlaze backend.
//
//===----------------------------------------------------------------------===//
#ifndef MBLAZE_ELF_WRITER_INFO_H
#define MBLAZE_ELF_WRITER_INFO_H
#include "llvm/Target/TargetELFWriterInfo.h"
namespace llvm {
class MBlazeELFWriterInfo : public TargetELFWriterInfo {
// ELF Relocation types for MBlaze
enum MBlazeRelocationType {
R_MICROBLAZE_NONE = 0,
R_MICROBLAZE_32 = 1,
R_MICROBLAZE_32_PCREL = 2,
R_MICROBLAZE_64_PCREL = 3,
R_MICROBLAZE_32_PCREL_LO = 4,
R_MICROBLAZE_64 = 5,
R_MICROBLAZE_32_LO = 6,
R_MICROBLAZE_SRO32 = 7,
R_MICROBLAZE_SRW32 = 8,
R_MICROBLAZE_64_NONE = 9,
R_MICROBLAZE_32_SYM_OP_SYM = 10,
R_MICROBLAZE_GNU_VTINHERIT = 11,
R_MICROBLAZE_GNU_VTENTRY = 12,
R_MICROBLAZE_GOTPC_64 = 13,
R_MICROBLAZE_GOT_64 = 14,
R_MICROBLAZE_PLT_64 = 15,
R_MICROBLAZE_REL = 16,
R_MICROBLAZE_JUMP_SLOT = 17,
R_MICROBLAZE_GLOB_DAT = 18,
R_MICROBLAZE_GOTOFF_64 = 19,
R_MICROBLAZE_GOTOFF_32 = 20,
R_MICROBLAZE_COPY = 21
};
public:
MBlazeELFWriterInfo(TargetMachine &TM);
virtual ~MBlazeELFWriterInfo();
/// getRelocationType - Returns the target specific ELF Relocation type.
/// 'MachineRelTy' contains the object code independent relocation type
virtual unsigned getRelocationType(unsigned MachineRelTy) const;
/// hasRelocationAddend - True if the target uses an addend in the
/// ELF relocation entry.
virtual bool hasRelocationAddend() const { return false; }
/// getDefaultAddendForRelTy - Gets the default addend value for a
/// relocation entry based on the target ELF relocation type.
virtual long int getDefaultAddendForRelTy(unsigned RelTy,
long int Modifier = 0) const;
/// getRelTySize - Returns the size of relocatable field in bits
virtual unsigned getRelocationTySize(unsigned RelTy) const;
/// isPCRelativeRel - True if the relocation type is pc relative
virtual bool isPCRelativeRel(unsigned RelTy) const;
/// getJumpTableRelocationTy - Returns the machine relocation type used
/// to reference a jumptable.
virtual unsigned getAbsoluteLabelMachineRelTy() const;
/// computeRelocation - Some relocatable fields could be relocated
/// directly, avoiding the relocation symbol emission, compute the
/// final relocation value for this symbol.
virtual long int computeRelocation(unsigned SymOffset, unsigned RelOffset,
unsigned RelTy) const;
};
} // end llvm namespace
#endif // MBLAZE_ELF_WRITER_INFO_H
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