TEST_F(SectionDataTest, Fragment_list_and_iterator) {
LDSection* test = LDSection::Create("test", LDFileFormat::Null, 0, 0);
SectionData* s = SectionData::Create(*test);
EXPECT_TRUE(s->empty());
new Fragment(Fragment::Alignment, s);
new Fragment(Fragment::Alignment, s);
new Fragment(Fragment::Region, s);
new Fragment(Fragment::Fillment, s);
new Fragment(Fragment::Target, s);
EXPECT_TRUE(5 == s->size());
// iterator
llvm::iplist<Fragment>::iterator iter = s->begin();
EXPECT_TRUE(Fragment::Alignment == iter->getKind());
++iter;
EXPECT_TRUE(Fragment::Alignment == iter->getKind());
++iter;
EXPECT_TRUE(Fragment::Region == iter->getKind());
++iter;
EXPECT_TRUE(Fragment::Fillment == iter->getKind());
++iter;
EXPECT_TRUE(Fragment::Target == iter->getKind());
++iter;
EXPECT_TRUE(iter == s->end());
LDSection::Destroy(test);
}
bool SectionSymbolSet::finalize(LDSection& pOutSect,
SymbolTable& pSymTab, bool relocatable)
{
if (!relocatable && pOutSect.size() == 0)
return true;
LDSymbol* sym = get(pOutSect);
assert(NULL != sym);
SectionData* data = NULL;
switch (pOutSect.kind()) {
case LDFileFormat::Relocation:
// Relocation section should not have section symbol.
return true;
case LDFileFormat::EhFrame:
if (EhFrame *ehframe = pOutSect.getEhFrame())
data = ehframe->getSectionData();
break;
default:
data = pOutSect.getSectionData();
break;
}
FragmentRef* frag_ref;
if (data && !data->empty())
frag_ref = FragmentRef::Create(data->front(), 0x0);
else
frag_ref = FragmentRef::Null();
sym->setFragmentRef(frag_ref);
// push symbol into output symbol table
pSymTab.add(*sym);
return true;
}
bool HexagonLDBackend::SetSDataSection() {
SectionData *pTo = (m_psdata->getSectionData());
if (pTo) {
MoveCommonData(*m_pscommon_1->getSectionData(), *pTo);
MoveCommonData(*m_pscommon_2->getSectionData(), *pTo);
MoveCommonData(*m_pscommon_4->getSectionData(), *pTo);
MoveCommonData(*m_pscommon_8->getSectionData(), *pTo);
SectionData::FragmentListType& to_list = pTo->getFragmentList();
SectionData::FragmentListType::iterator fragTo, fragToEnd = to_list.end();
uint32_t offset = 0;
for (fragTo = to_list.begin(); fragTo != fragToEnd; ++fragTo) {
fragTo->setOffset(offset);
offset += fragTo->size();
}
// set up pTo's header
pTo->getSection().setSize(offset);
SectionData::FragmentListType& newlist = pTo->getFragmentList();
for (fragTo = newlist.begin(), fragToEnd = newlist.end();
fragTo != fragToEnd; ++fragTo) {
fragTo->setParent(pTo);
}
}
return true;
}
/// addStub - add a stub into the island
bool BranchIsland::addStub(const Stub* pPrototype,
const Relocation& pReloc,
Stub& pStub)
{
bool exist = false;
Key key(pPrototype, pReloc.symInfo()->outSymbol(), pReloc.addend());
StubEntryType* entry = m_StubMap.insert(key, exist);
if (!exist) {
entry->setValue(&pStub);
m_pRear = &pStub;
SectionData* sd = m_Entry.getParent();
// insert alignment fragment
// TODO: check if we can reduce this alignment fragment for some cases
AlignFragment* align_frag = new AlignFragment(pStub.alignment(),
0x0,
1u,
pStub.alignment() - 1);
align_frag->setParent(sd);
sd->getFragmentList().insert(end(), align_frag);
align_frag->setOffset(align_frag->getPrevNode()->getOffset() +
align_frag->getPrevNode()->size());
// insert stub fragment
pStub.setParent(sd);
sd->getFragmentList().insert(end(), &pStub);
pStub.setOffset(pStub.getPrevNode()->getOffset() +
pStub.getPrevNode()->size());
}
return !exist;
}
TEST_F(SectionDataTest, constructor_and_trivial_func) {
LDSection* test = LDSection::Create("test", LDFileFormat::Null, 0, 0);
SectionData* s = SectionData::Create(*test);
EXPECT_TRUE(s->getSection().name() == "test" &&
s->getSection().kind() == LDFileFormat::Null);
LDSection::Destroy(test);
}
static RegionFragment* findRegionFragment(LDSection& pSection) {
SectionData* sectData = pSection.getSectionData();
for (SectionData::iterator it = sectData->begin(),
end = sectData->end(); it != end; ++it) {
if (it->getKind() == Fragment::Region) {
return static_cast<RegionFragment*>(&*it);
}
}
return NULL;
}
void AArch64GNULDBackend::scanErrata(Module& pModule,
IRBuilder& pBuilder,
size_t& num_new_stubs,
size_t& stubs_strlen) {
// TODO: Implement AArch64 ErrataStubFactory to create the specific erratum
// stub and simplify the logics.
for (Module::iterator sect = pModule.begin(), sectEnd = pModule.end();
sect != sectEnd; ++sect) {
if (((*sect)->kind() == LDFileFormat::TEXT) && (*sect)->hasSectionData()) {
SectionData* sd = (*sect)->getSectionData();
for (SectionData::iterator it = sd->begin(), ie = sd->end(); it != ie;
++it) {
Fragment* frag = llvm::dyn_cast<RegionFragment>(it);
if (frag != NULL) {
FragmentRef* frag_ref = FragmentRef::Create(*frag, 0);
for (unsigned offset = 0; offset < frag->size();
offset += AArch64InsnHelpers::InsnSize) {
Stub* stub = getStubFactory()->create(*frag_ref,
pBuilder,
*getBRIslandFactory());
if (stub != NULL) {
// A stub symbol should be local
assert(stub->symInfo() != NULL && stub->symInfo()->isLocal());
const AArch64CA53ErratumStub* erratum_stub =
reinterpret_cast<const AArch64CA53ErratumStub*>(stub);
assert(erratum_stub != NULL);
// Rewrite the erratum instruction as a branch to the stub.
uint64_t offset = frag_ref->offset() +
erratum_stub->getErratumInsnOffset();
Relocation* reloc =
Relocation::Create(llvm::ELF::R_AARCH64_JUMP26,
*(FragmentRef::Create(*frag, offset)),
/* pAddend */0);
reloc->setSymInfo(stub->symInfo());
reloc->target() = AArch64InsnHelpers::buildBranchInsn();
addExtraRelocation(reloc);
++num_new_stubs;
stubs_strlen += stub->symInfo()->nameSize() + 1;
}
frag_ref->assign(*frag, offset + AArch64InsnHelpers::InsnSize);
} // for each INSN
}
} // for each FRAGMENT
}
} // for each TEXT section
}
/**
* 检查是否超限
* 如果有左值、右值小于超限值，则返回true
* 如果当前值为-1不做比较
*/
bool ClearanceData::checkLessThanStdSectionData(SectionData & basedata)
{
std::map<int,ClearanceItem>::iterator it = vals.begin();
std::map<int, item> & basemap = basedata.getMaps();
int tempkey;
float tmpvalf;
int tmpvali;
while (it != vals.end())
{
/*
vs2012下不行，出错“初始化”: 无法从“std::pair<_Ty1,_Ty2>”转换为“std::pair<_Ty1,_Ty2>”
std::pair<int,item&> pair = (*it);
pair.second.left = -1;
pair.second.right = -1;
*/
std::pair<int,ClearanceItem> pair = (*it);
tempkey = pair.first;
if (vals[tempkey].leftval > 0 && vals[tempkey].leftval < basemap[tempkey].left)
return true;
if (vals[tempkey].rightval > 0 && vals[tempkey].rightval < basemap[tempkey].right)
return true;
it++;
}
return false;
}
pySectionData(int np, const bpn::array &z_np, const bpn::array &EA_np,
const bpn::array &EIxx_np, const bpn::array &EIyy_np, const bpn::array &GJ_np,
const bpn::array &rhoA_np, const bpn::array &rhoJ_np) {
sec.nodes = np;
sec.z.resize(sec.nodes);
sec.EA.resize(sec.nodes);
sec.EIxx.resize(sec.nodes);
sec.EIyy.resize(sec.nodes);
sec.GJ.resize(sec.nodes);
sec.rhoA.resize(sec.nodes);
sec.rhoJ.resize(sec.nodes);
for (int i = 0 ; i < sec.nodes; i++) {
sec.z(i) = bp::extract<double>(z_np[i]);
sec.EA(i) = bp::extract<double>(EA_np[i]);
sec.EIxx(i) = bp::extract<double>(EIxx_np[i]);
sec.EIyy(i) = bp::extract<double>(EIyy_np[i]);
sec.GJ(i) = bp::extract<double>(GJ_np[i]);
sec.rhoA(i) = bp::extract<double>(rhoA_np[i]);
sec.rhoJ(i) = bp::extract<double>(rhoJ_np[i]);
}
}
bool ARMGNULDBackend::readSection(Input& pInput, SectionData& pSD)
{
Fragment* frag = NULL;
uint32_t offset = pInput.fileOffset() + pSD.getSection().offset();
uint32_t size = pSD.getSection().size();
llvm::StringRef region = pInput.memArea()->request(offset, size);
if (region.size() == 0) {
// If the input section's size is zero, we got a NULL region.
// use a virtual fill fragment
frag = new FillFragment(0x0, 0, 0);
}
else {
frag = new RegionFragment(region);
}
ObjectBuilder::AppendFragment(*frag, pSD);
return true;
}
ErrorStatus::FileError AFTSectionPipeFace::Save(SectionData &Data,SectionPipePerisistent& model)
{
Data.Search(model.Search());
Data.MaxSections(model.MaxSections());
Data.MinSections(model.MinSections());
Data.MaxError(model.MaxError());
Data.PctIncrement(model.PctIncrement());
Data.Sort(model.Sort());
Data.IdealSections(model.IdealSections());
Data.TimeStep(model.TimeStep());
return ErrorStatus::eFileOK;
}
FragmentRef* FragmentRef::Create(LDSection& pSection, uint64_t pOffset) {
SectionData* data = NULL;
switch (pSection.kind()) {
case LDFileFormat::Relocation:
// No fragment reference refers to a relocation section
break;
case LDFileFormat::EhFrame:
if (pSection.hasEhFrame())
data = pSection.getEhFrame()->getSectionData();
break;
default:
data = pSection.getSectionData();
break;
}
if (data == NULL || data->empty()) {
return Null();
}
return Create(data->front(), pOffset);
}
bool HexagonLDBackend::MoveCommonData(SectionData &pFrom, SectionData &pTo)
{
SectionData::FragmentListType& to_list = pTo.getFragmentList();
SectionData::FragmentListType::iterator frag, fragEnd = to_list.end();
uint32_t pFromFlag = pFrom.getSection().align();
bool found = false;
SectionData::FragmentListType::iterator fragInsert;
for (frag = to_list.begin(); frag != fragEnd; ++frag) {
if (frag->getKind() == mcld::Fragment::Alignment) {
fragInsert = frag;
continue;
}
if ((frag->getKind() != mcld::Fragment::Region) &&
(frag->getKind() != mcld::Fragment::Fillment)) {
continue;
}
uint32_t flag = frag->getParent()->getSection().align();
if (pFromFlag < flag) {
found = true;
break;
}
}
AlignFragment* align = NULL;
if (pFrom.getSection().align() > 1) {
// if the align constraint is larger than 1, append an alignment
align = new AlignFragment(pFrom.getSection().align(), // alignment
0x0, // the filled value
1u, // the size of filled value
pFrom.getSection().align() - 1 // max bytes to emit
);
pFrom.getFragmentList().push_front(align);
}
if (found)
to_list.splice(fragInsert, pFrom.getFragmentList());
else
to_list.splice(frag, pFrom.getFragmentList());
return true;
}
/// emitSectionData
void ELFObjectWriter::emitSectionData(const SectionData& pSD,
MemoryRegion& pRegion) const
{
SectionData::const_iterator fragIter, fragEnd = pSD.end();
size_t cur_offset = 0;
for (fragIter = pSD.begin(); fragIter != fragEnd; ++fragIter) {
size_t size = fragIter->size();
switch(fragIter->getKind()) {
case Fragment::Region: {
const RegionFragment& region_frag = llvm::cast<RegionFragment>(*fragIter);
const uint8_t* from = region_frag.getRegion().start();
memcpy(pRegion.getBuffer(cur_offset), from, size);
break;
}
case Fragment::Alignment: {
// TODO: emit values with different sizes (> 1 byte), and emit nops
const AlignFragment& align_frag = llvm::cast<AlignFragment>(*fragIter);
uint64_t count = size / align_frag.getValueSize();
switch (align_frag.getValueSize()) {
case 1u:
std::memset(pRegion.getBuffer(cur_offset),
align_frag.getValue(),
count);
break;
default:
llvm::report_fatal_error("unsupported value size for align fragment emission yet.\n");
break;
}
break;
}
case Fragment::Fillment: {
const FillFragment& fill_frag = llvm::cast<FillFragment>(*fragIter);
if (0 == size ||
0 == fill_frag.getValueSize() ||
0 == fill_frag.size()) {
// ignore virtual fillment
break;
}
uint64_t num_tiles = fill_frag.size() / fill_frag.getValueSize();
for (uint64_t i = 0; i != num_tiles; ++i) {
std::memset(pRegion.getBuffer(cur_offset),
fill_frag.getValue(),
fill_frag.getValueSize());
}
break;
}
case Fragment::Stub: {
const Stub& stub_frag = llvm::cast<Stub>(*fragIter);
memcpy(pRegion.getBuffer(cur_offset), stub_frag.getContent(), size);
break;
}
case Fragment::Null: {
assert(0x0 == size);
break;
}
case Fragment::Target:
llvm::report_fatal_error("Target fragment should not be in a regular section.\n");
break;
default:
llvm::report_fatal_error("invalid fragment should not be in a regular section.\n");
break;
}
cur_offset += size;
}
}
int LzExcelOutput::outputSingleSection(TunnelDataModel * inputbasicdata, QString collectdate, SectionData & inputdata, QString templatepath, QString outputfile, QString insertimgpath)
{
QString templatename = "SingleSectionTemplate.xls";
int ret = copy(templatepath, templatename, outputfile);
qDebug() << templatepath << outputfile << insertimgpath;
if (ret != 0)
return ret;
// 插入图片路径不存在
if (!QFile(insertimgpath).exists())
return 3;
//操作已经存在的excel，生成限界尺寸表
ExcelEngine excel;
excel.Open(outputfile, 1, false);
// 限界表名称
excel.SetCellData(1,1,QObject::tr("%1隧道单幅尺寸表").arg(QObject::tr(inputbasicdata->getName().c_str())));
excel.SetCellData(52,1,QObject::tr("%1隧道断面示意图").arg(QObject::tr(inputbasicdata->getName().c_str())));
// 线路名称
excel.SetCellData(3,2,QObject::tr(inputbasicdata->getLinename().c_str()));
excel.SetCellData(54,2,QObject::tr(inputbasicdata->getLinename().c_str()));
// 区段///TODO
excel.SetCellData(3,7,QObject::tr(inputbasicdata->getLinename().c_str()));
// 面向站名
excel.SetCellData(3,10,QObject::tr(inputbasicdata->getLineEndStation().c_str()));
excel.SetCellData(54,8,QObject::tr(inputbasicdata->getLineEndStation().c_str()));
// 桥隧名称
excel.SetCellData(4,3,QObject::tr(inputbasicdata->getName().c_str()));
excel.SetCellData(54,4,QObject::tr(inputbasicdata->getName().c_str()));
// 时间
QByteArray ba = collectdate.toLocal8Bit();
excel.SetCellData(48,10,ba.constData());
excel.SetCellData(54,10,ba.constData());
// 计算隧道长度
_int64 tunnellength = inputbasicdata->getEndPoint() - inputbasicdata->getStartPoint();
if (tunnellength < 0)
tunnellength = 0 - tunnellength;
//excel.SetCellData(102,3,tunnellength);
// 计算中心里程 隧道中心点的里程数
float centerlength = 1.0 * (inputbasicdata->getEndPoint() + inputbasicdata->getStartPoint()) / 2;
excel.SetCellData(4,7,centerlength);
excel.SetCellData(101,3,centerlength);
SectionData & data = inputdata;
int rowcount = data.getMaps().size();
// Excel模板从第9行开始为高度限界数据，前面几行为表头或空格
int startrownum = 9;
int startcolumnnumdef = 1;
// 临时变量
int startcolumnnum = startcolumnnumdef;
float tmpval;
__int64 tmppos;
int tmpradius;
{
startcolumnnum = startcolumnnumdef;
CurveType type = inputdata.getType();
long long pos = inputdata.getMile();
int radius = inputdata.getRadius();
float minHeight = inputdata.getCenterHeight();
switch(type)
{
case Curve_Straight:
startcolumnnum += LzOutputTableColumn::Straight_Left_Val;
break;
case Curve_Left:
startcolumnnum += 3;
break;
case Curve_Right:
startcolumnnum += 7;
break;
default:
break;
}
// map反向遍历，正向为高度从小到大，插入图表是需要高度从大到小
std::map<int, item>::reverse_iterator it = data.getMaps().rbegin();
int k = 0; // 相对行数
while (it != data.getMaps().rend())
{
std::pair<int, item> pair = (*it);
if (pair.first > minHeight)
{
it++;
k++;
continue;
}
// 此处写要插入的内容
if (pair.second.left >= 0)
excel.SetCellData(k + startrownum, startcolumnnum, (int)pair.second.left);
if (pair.second.right >= 0)
excel.SetCellData(k + startrownum, startcolumnnum + 1, (int)pair.second.right);
if (type != Curve_Straight) // 不是直线，折减后尺寸
{
if (pair.second.left >= 0)
excel.SetCellData(k + startrownum, startcolumnnum + 2, (long long)pair.second.left);
if (pair.second.right >= 0)
excel.SetCellData(k + startrownum, startcolumnnum + 3, (long long)pair.second.left);
}
it++;
k++;
}
}
// <150高度手动输入？ ///TODO
// 线路中心线上方最低净高mm///TODO
excel.SetCellData(rowcount+startrownum+1,6,(int)inputdata.getCenterHeight());
// 半径
int radius = inputdata.getRadius();
if (radius <= 0)
radius = 0;
excel.SetCellData(4,10,radius);
excel.SetCellData(54,6,radius);
excel.SetCellData(102,3,radius);
excel.setProperty("DisplayAlerts", 0);
// 保存
excel.Save();
excel.Close();
// 生成限界图
initExcelEngine();
QAxObject *workBooks1 = excel1->querySubObject("Workbooks");
workBooks1->dynamicCall("Open(const QString&)", outputfile);
QAxObject *workBook1 = excel1->querySubObject("ActiveWorkBook");
QAxObject *sheets1 = workBook1->querySubObject("WorkSheets");
QAxObject *sheet1 = sheets1->querySubObject("Item(int)", 1);//获得第一个工作表
// QAxObject *range=sheet1->querySubObject("Range(const QVariant&)",QVariant(QString("D52:AA92")));
// range->dynamicCall("Clear()");//指定清除某个区域
/////////////AddPicture函数详解////////////////
// AddPicture(FileName, LinkToFile, SaveWithDocument, Left, Top, Width, Height)中7个参数的意思。
// (1)FileName 必选 String 图片的路径和文件名。
// (2)LinkToFile 可选 Variant 如果该参数值为 True，则将图片链接到创建它的文件。如果该参数值为 False，则将图片作为该文件的独立副本。默认值为 False。
// (3)SaveWithDocument 可选 Variant 如果该参数值为 True，则将链接的图片与文档一起保存。默认值为 False。
// (4)Left 可选 Variant 新图片的左边缘相对于绘图画布的位置，以磅为单位。
// (5)Top 可选 Variant 新图片的上边缘相对于绘图画布的位置，以磅为单位。
// (6)Width 可选 Variant 图片的宽度，以磅为单位。
// (7)Height 可选 Variant 图片的高度，以磅为单位。
///////////////////////////////////////////////
// @author 熊雪、范翔。路径变成反斜杠，否则AddPicture，SaveAs函数出错
outputfile = toBackSlashStr(outputfile);
insertimgpath = toBackSlashStr(insertimgpath);
QAxObject *shapes1 = sheet1->querySubObject("Shapes");
shapes1->dynamicCall("AddPicture(QString&,bool,bool,double,double,double,double",QString("%1").arg(insertimgpath),true,true,8,770,510,595);//8,750,510,627 QString("%1image.jpg").arg(outputfile)
excel1->setProperty("DisplayAlerts", 0);
//excel1->dynamicCall("Save()");
workBook1->dynamicCall("SaveAs(const QString&)", outputfile);
// QMessageBox::information(NULL, tr("OK"), tr("成功生成Excel文件！"),QMessageBox::Yes | QMessageBox::No);
excel1->dynamicCall("Quit()");
return 0;
}
void ARMGNULDBackend::rewriteARMExIdxSection(Module& pModule) {
if (!m_pEXIDX->hasSectionData()) {
// Return if this is empty section.
return;
}
SectionData* sectData = m_pEXIDX->getSectionData();
SectionData::FragmentListType& list = sectData->getFragmentList();
// Move the first fragment (align fragment) and last fragment (null fragment)
// to temporary list because we would only like to sort the region fragment.
SectionData::FragmentListType tmp;
{
SectionData::iterator first = sectData->begin();
SectionData::iterator last = sectData->end();
--last;
assert(first->getKind() == Fragment::Alignment);
assert(last->getKind() == Fragment::Null);
tmp.splice(tmp.end(), list, first);
tmp.splice(tmp.end(), list, last);
}
// Sort the region fragments in the .ARM.exidx output section.
sort(list, ExIdxFragmentComparator(m_ExData));
// Fix the coverage of the .ARM.exidx table.
llvm::StringRef cantUnwindRegion(g_CantUnwindEntry,
sizeof(g_CantUnwindEntry));
SectionData::FragmentListType::iterator it = list.begin();
if (it != list.end()) {
Fragment* prevTextFrag = m_ExData.getTupleByExIdx(it)->getTextFragment();
uint64_t prevTextEnd = prevTextFrag->getParent()->getSection().addr() +
prevTextFrag->getOffset() +
prevTextFrag->size();
++it;
while (it != list.end()) {
Fragment* currTextFrag = m_ExData.getTupleByExIdx(it)->getTextFragment();
uint64_t currTextBegin = currTextFrag->getParent()->getSection().addr() +
currTextFrag->getOffset();
if (currTextBegin > prevTextEnd) {
// Found a gap. Insert a can't unwind entry.
RegionFragment* frag = new RegionFragment(cantUnwindRegion, nullptr);
frag->setParent(sectData);
list.insert(it, frag);
// Add PREL31 reference to the beginning of the uncovered region.
Relocation* reloc =
Relocation::Create(static_cast<uint32_t>(llvm::ELF::R_ARM_PREL31),
*FragmentRef::Create(*frag, /* pOffset */0),
/* pAddend */0);
reloc->setSymInfo(
CreateLocalSymbolToFragmentEnd(pModule, *prevTextFrag));
addExtraRelocation(reloc);
}
prevTextEnd = currTextBegin + currTextFrag->size();
prevTextFrag = currTextFrag;
++it;
}
// Add a can't unwind entry to terminate .ARM.exidx section.
RegionFragment* frag = new RegionFragment(cantUnwindRegion, nullptr);
frag->setParent(sectData);
list.push_back(frag);
// Add PREL31 reference to the end of the .text section.
Relocation* reloc =
Relocation::Create(static_cast<uint32_t>(llvm::ELF::R_ARM_PREL31),
*FragmentRef::Create(*frag, /* pOffset */0),
/* pAddend */0);
reloc->setSymInfo(CreateLocalSymbolToFragmentEnd(pModule, *prevTextFrag));
addExtraRelocation(reloc);
}
// Add the first and the last fragment back.
list.splice(list.begin(), tmp, tmp.begin());
list.splice(list.end(), tmp, tmp.begin());
// Update the fragment offsets.
uint64_t offset = 0;
for (SectionData::iterator it = sectData->begin(), end = sectData->end();
it != end; ++it) {
it->setOffset(offset);
offset += it->size();
}
// Update the section size.
m_pEXIDX->setSize(offset);
// Rebuild the section header.
setOutputSectionAddress(pModule);
}
/// MoveSectionData - move the fragments of pTO section data to pTo
bool HexagonLDBackend::MoveSectionDataAndSort(SectionData& pFrom, SectionData& pTo)
{
assert(&pFrom != &pTo && "Cannot move section data to itself!");
SectionData::FragmentListType& to_list = pTo.getFragmentList();
SectionData::FragmentListType::iterator frag, fragEnd = to_list.end();
uint32_t pFromFlag = pFrom.getSection().align();
bool found = false;
SectionData::FragmentListType::iterator fragInsert;
for (frag = to_list.begin(); frag != fragEnd; ++frag) {
if (frag->getKind() == mcld::Fragment::Alignment) {
fragInsert = frag;
continue;
}
if ((frag->getKind() != mcld::Fragment::Region) &&
(frag->getKind() != mcld::Fragment::Fillment)) {
continue;
}
uint32_t flag = frag->getParent()->getSection().align();
if (pFromFlag < flag) {
found = true;
break;
}
}
AlignFragment* align = NULL;
if (pFrom.getSection().align() > 1) {
// if the align constraint is larger than 1, append an alignment
align = new AlignFragment(pFrom.getSection().align(), // alignment
0x0, // the filled value
1u, // the size of filled value
pFrom.getSection().align() - 1 // max bytes to emit
);
pFrom.getFragmentList().push_front(align);
}
if (found)
to_list.splice(fragInsert, pFrom.getFragmentList());
else
to_list.splice(frag, pFrom.getFragmentList());
uint32_t offset = 0;
for (frag = to_list.begin(); frag != fragEnd; ++frag) {
frag->setOffset(offset);
offset += frag->size();
}
// set up pTo's header
pTo.getSection().setSize(offset);
if (pFrom.getSection().align() > pTo.getSection().align())
pTo.getSection().setAlign(pFrom.getSection().align());
if (pFrom.getSection().flag() > pTo.getSection().flag())
pTo.getSection().setFlag(pFrom.getSection().flag());
return true;
}
bool MipsGNULDBackend::doRelax(Module& pModule,
IRBuilder& pBuilder,
bool& pFinished) {
assert(getStubFactory() != NULL && getBRIslandFactory() != NULL);
bool isRelaxed = false;
for (Module::obj_iterator input = pModule.obj_begin();
input != pModule.obj_end();
++input) {
LDContext* context = (*input)->context();
for (LDContext::sect_iterator rs = context->relocSectBegin();
rs != context->relocSectEnd();
++rs) {
LDSection* sec = *rs;
if (LDFileFormat::Ignore == sec->kind() || !sec->hasRelocData())
continue;
for (RelocData::iterator reloc = sec->getRelocData()->begin();
reloc != sec->getRelocData()->end();
++reloc) {
if (llvm::ELF::R_MIPS_26 != reloc->type())
continue;
if (relaxRelocation(pBuilder, *llvm::cast<Relocation>(reloc)))
isRelaxed = true;
}
}
}
SectionData* textData = getOutputFormat()->getText().getSectionData();
// find the first fragment w/ invalid offset due to stub insertion
Fragment* invalid = NULL;
pFinished = true;
for (BranchIslandFactory::iterator ii = getBRIslandFactory()->begin(),
ie = getBRIslandFactory()->end();
ii != ie;
++ii) {
BranchIsland& island = *ii;
if (island.end() == textData->end())
break;
Fragment* exit = island.end();
if ((island.offset() + island.size()) > exit->getOffset()) {
invalid = exit;
pFinished = false;
break;
}
}
// reset the offset of invalid fragments
while (invalid != NULL) {
invalid->setOffset(invalid->getPrevNode()->getOffset() +
invalid->getPrevNode()->size());
invalid = invalid->getNextNode();
}
// reset the size of .text
if (isRelaxed)
getOutputFormat()->getText().setSize(textData->back().getOffset() +
textData->back().size());
return isRelaxed;
}
bool AArch64GNULDBackend::doRelax(Module& pModule,
IRBuilder& pBuilder,
bool& pFinished) {
assert(getStubFactory() != NULL && getBRIslandFactory() != NULL);
// Number of new stubs added
size_t num_new_stubs = 0;
// String lengh to hold new stub symbols
size_t stubs_strlen = 0;
if (config().targets().fixCA53Erratum835769() ||
config().targets().fixCA53Erratum843419()) {
scanErrata(pModule, pBuilder, num_new_stubs, stubs_strlen);
}
ELFFileFormat* file_format = getOutputFormat();
// check branch relocs and create the related stubs if needed
Module::obj_iterator input, inEnd = pModule.obj_end();
for (input = pModule.obj_begin(); input != inEnd; ++input) {
LDContext::sect_iterator rs, rsEnd = (*input)->context()->relocSectEnd();
for (rs = (*input)->context()->relocSectBegin(); rs != rsEnd; ++rs) {
if (LDFileFormat::Ignore == (*rs)->kind() || !(*rs)->hasRelocData())
continue;
RelocData::iterator reloc, rEnd = (*rs)->getRelocData()->end();
for (reloc = (*rs)->getRelocData()->begin(); reloc != rEnd; ++reloc) {
Relocation* relocation = llvm::cast<Relocation>(reloc);
switch (relocation->type()) {
case llvm::ELF::R_AARCH64_CALL26:
case llvm::ELF::R_AARCH64_JUMP26: {
// calculate the possible symbol value
uint64_t sym_value = 0x0;
LDSymbol* symbol = relocation->symInfo()->outSymbol();
if (symbol->hasFragRef()) {
uint64_t value = symbol->fragRef()->getOutputOffset();
uint64_t addr =
symbol->fragRef()->frag()->getParent()->getSection().addr();
sym_value = addr + value;
}
if ((relocation->symInfo()->reserved() &
AArch64Relocator::ReservePLT) != 0x0) {
// FIXME: we need to find out the address of the specific plt
// entry
assert(file_format->hasPLT());
sym_value = file_format->getPLT().addr();
}
Stub* stub = getStubFactory()->create(*relocation, // relocation
sym_value, // symbol value
pBuilder,
*getBRIslandFactory());
if (stub != NULL) {
// a stub symbol should be local
assert(stub->symInfo() != NULL && stub->symInfo()->isLocal());
// reset the branch target of the reloc to this stub instead
relocation->setSymInfo(stub->symInfo());
++num_new_stubs;
stubs_strlen += stub->symInfo()->nameSize() + 1;
}
break;
}
default: {
break;
}
} // end of switch
} // for all relocations
} // for all relocation section
} // for all inputs
// Find the first fragment w/ invalid offset due to stub insertion.
std::vector<Fragment*> invalid_frags;
pFinished = true;
for (BranchIslandFactory::iterator island = getBRIslandFactory()->begin(),
island_end = getBRIslandFactory()->end();
island != island_end;
++island) {
if ((*island).size() > stubGroupSize()) {
error(diag::err_no_space_to_place_stubs) << stubGroupSize();
return false;
}
if ((*island).numOfStubs() == 0) {
continue;
}
Fragment* exit = &*(*island).end();
if (exit == (*island).begin()->getParent()->end()) {
continue;
}
if (((*island).offset() + (*island).size()) > exit->getOffset()) {
if (invalid_frags.empty() ||
(invalid_frags.back()->getParent() != (*island).getParent())) {
invalid_frags.push_back(exit);
pFinished = false;
}
continue;
}
}
// Reset the offset of invalid fragments.
for (auto it = invalid_frags.begin(), ie = invalid_frags.end(); it != ie;
++it) {
Fragment* invalid = *it;
while (invalid != NULL) {
invalid->setOffset(invalid->getPrevNode()->getOffset() +
invalid->getPrevNode()->size());
invalid = invalid->getNextNode();
}
}
// Fix up the size of .symtab, .strtab, and TEXT sections
if (num_new_stubs == 0) {
return false;
} else {
switch (config().options().getStripSymbolMode()) {
case GeneralOptions::StripSymbolMode::StripAllSymbols:
case GeneralOptions::StripSymbolMode::StripLocals:
break;
default: {
LDSection& symtab = file_format->getSymTab();
LDSection& strtab = file_format->getStrTab();
symtab.setSize(symtab.size() +
sizeof(llvm::ELF::Elf64_Sym) * num_new_stubs);
symtab.setInfo(symtab.getInfo() + num_new_stubs);
strtab.setSize(strtab.size() + stubs_strlen);
}
} // switch (config().options().getStripSymbolMode())
SectionData* prev = NULL;
for (BranchIslandFactory::iterator island = getBRIslandFactory()->begin(),
island_end = getBRIslandFactory()->end();
island != island_end;
++island) {
SectionData* sd = (*island).begin()->getParent();
if ((*island).numOfStubs() != 0) {
if (sd != prev) {
sd->getSection().setSize(sd->back().getOffset() + sd->back().size());
}
}
prev = sd;
}
return true;
} // if (num_new_stubs == 0)
}
