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//===-- ARMELFWriterInfo.cpp - ELF Writer Info for the ARM backend --------===//
//
// 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 ARM backend.
//
//===----------------------------------------------------------------------===//
#include "ARMELFWriterInfo.h"
#include "ARMRelocations.h"
#include "llvm/Function.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/ELF.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// Implementation of the ARMELFWriterInfo class
//===----------------------------------------------------------------------===//
ARMELFWriterInfo::ARMELFWriterInfo(TargetMachine &TM)
: TargetELFWriterInfo(TM.getTargetData()->getPointerSizeInBits() == 64,
TM.getTargetData()->isLittleEndian()) {
}
ARMELFWriterInfo::~ARMELFWriterInfo() {}
unsigned ARMELFWriterInfo::getRelocationType(unsigned MachineRelTy) const {
switch (MachineRelTy) {
case ARM::reloc_arm_absolute:
case ARM::reloc_arm_relative:
case ARM::reloc_arm_cp_entry:
case ARM::reloc_arm_vfp_cp_entry:
case ARM::reloc_arm_machine_cp_entry:
case ARM::reloc_arm_jt_base:
case ARM::reloc_arm_pic_jt:
assert(0 && "unsupported ARM relocation type"); return 0;
case ARM::reloc_arm_branch: return ELF::R_ARM_CALL;
case ARM::reloc_arm_movt: return ELF::R_ARM_MOVT_ABS;
case ARM::reloc_arm_movw: return ELF::R_ARM_MOVW_ABS_NC;
default:
llvm_unreachable("unknown ARM relocation type");
}
}
long int ARMELFWriterInfo::getDefaultAddendForRelTy(unsigned RelTy,
long int Modifier) const {
assert(0 && "ARMELFWriterInfo::getDefaultAddendForRelTy() not implemented");
return 0;
}
unsigned ARMELFWriterInfo::getRelocationTySize(unsigned RelTy) const {
assert(0 && "ARMELFWriterInfo::getRelocationTySize() not implemented");
return 0;
}
bool ARMELFWriterInfo::isPCRelativeRel(unsigned RelTy) const {
assert(0 && "ARMELFWriterInfo::isPCRelativeRel() not implemented");
return 1;
}
unsigned ARMELFWriterInfo::getAbsoluteLabelMachineRelTy() const {
assert(0 &&
"ARMELFWriterInfo::getAbsoluteLabelMachineRelTy() not implemented");
return 0;
}
long int ARMELFWriterInfo::computeRelocation(unsigned SymOffset,
unsigned RelOffset,
unsigned RelTy) const {
assert(0 &&
"ARMELFWriterInfo::getAbsoluteLabelMachineRelTy() not implemented");
return 0;
}
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