void* DynamicLibrary::SearchForAddressOfSymbol(const char *symbolName) {
SmartScopedLock<true> Lock(*SymbolsMutex);
// First check symbols added via AddSymbol().
if (ExplicitSymbols.isConstructed()) {
StringMap<void *>::iterator i = ExplicitSymbols->find(symbolName);
if (i != ExplicitSymbols->end())
return i->second;
}
#if HAVE_DLFCN_H
// Now search the libraries.
if (OpenedHandles) {
for (DenseSet<void *>::iterator I = OpenedHandles->begin(),
E = OpenedHandles->end(); I != E; ++I) {
//lt_ptr ptr = lt_dlsym(*I, symbolName);
void *ptr = dlsym(*I, symbolName);
if (ptr) {
return ptr;
}
}
}
#endif
if (void *Result = llvm::SearchForAddressOfSpecialSymbol(symbolName))
return Result;
// This macro returns the address of a well-known, explicit symbol
#define EXPLICIT_SYMBOL(SYM) \
if (!strcmp(symbolName, #SYM)) return &SYM
// On linux we have a weird situation. The stderr/out/in symbols are both
// macros and global variables because of standards requirements. So, we
// boldly use the EXPLICIT_SYMBOL macro without checking for a #define first.
#if defined(__linux__) and !defined(__ANDROID__) and !defined(__ELLCC__)
{
EXPLICIT_SYMBOL(stderr);
EXPLICIT_SYMBOL(stdout);
EXPLICIT_SYMBOL(stdin);
}
#else
// For everything else, we want to check to make sure the symbol isn't defined
// as a macro before using EXPLICIT_SYMBOL.
{
#ifndef stdin
EXPLICIT_SYMBOL(stdin);
#endif
#ifndef stdout
EXPLICIT_SYMBOL(stdout);
#endif
#ifndef stderr
EXPLICIT_SYMBOL(stderr);
#endif
}
#endif
#undef EXPLICIT_SYMBOL
return nullptr;
}
/// Return the type returned by DtoUnpaddedStruct called on a value of the
/// specified type.
/// Union types will get expanded into a struct, with a type for each member.
LLType* DtoUnpaddedStructType(Type* dty) {
assert(dty->ty == Tstruct);
typedef llvm::DenseMap<Type*, llvm::StructType*> CacheT;
static llvm::ManagedStatic<CacheT> cache;
CacheT::iterator it = cache->find(dty);
if (it != cache->end())
return it->second;
TypeStruct* sty = static_cast<TypeStruct*>(dty);
VarDeclarations& fields = sty->sym->fields;
std::vector<LLType*> types;
types.reserve(fields.dim);
for (unsigned i = 0; i < fields.dim; i++) {
LLType* fty;
if (fields[i]->type->ty == Tstruct) {
// Nested structs are the only members that can contain padding
fty = DtoUnpaddedStructType(fields[i]->type);
} else {
fty = DtoType(fields[i]->type);
}
types.push_back(fty);
}
LLStructType* Ty = LLStructType::get(gIR->context(), types);
cache->insert(std::make_pair(dty, Ty));
return Ty;
}
LDSymbol* LDSymbol::Null() {
// lazy initialization
if (g_NullSymbol->resolveInfo() == NULL) {
g_NullSymbol->setResolveInfo(*ResolveInfo::Null());
g_NullSymbol->setFragmentRef(FragmentRef::Create(*g_NullSymbolFragment, 0));
ResolveInfo::Null()->setSymPtr(&*g_NullSymbol);
}
return &*g_NullSymbol;
}
/// Create - create a fragment reference for a given fragment.
///
/// @param pFrag - the given fragment
/// @param pOffset - the offset, can be larger than the fragment, but can not
/// be larger than the section size.
/// @return if the offset is legal, return the fragment reference. Otherwise,
/// return NULL.
FragmentRef* FragmentRef::Create(Fragment& pFrag, uint64_t pOffset) {
int64_t offset = pOffset;
Fragment* frag = &pFrag;
while (frag != NULL) {
offset -= frag->size();
if (offset <= 0)
break;
frag = frag->getNextNode();
}
if ((frag != NULL) && (frag->size() != 0)) {
if (offset == 0)
frag = frag->getNextNode();
else
offset += frag->size();
}
if (frag == NULL)
return Null();
FragmentRef* result = g_FragRefFactory->allocate();
new (result) FragmentRef(*frag, offset);
return result;
}
namespace mcld {
typedef GCFactory<NameSpec, MCLD_SYMBOLS_PER_INPUT> NameSpecFactory;
static llvm::ManagedStatic<NameSpecFactory> g_NameSpecFactory;
//===----------------------------------------------------------------------===//
// NameSpec
//===----------------------------------------------------------------------===//
NameSpec::NameSpec() {
}
NameSpec::NameSpec(const std::string& pName, bool pAsNeeded)
: InputToken(InputToken::NameSpec, pName, pAsNeeded) {
}
NameSpec::~NameSpec() {
}
NameSpec* NameSpec::create(const std::string& pName, bool pAsNeeded) {
NameSpec* result = g_NameSpecFactory->allocate();
new (result) NameSpec(pName, pAsNeeded);
return result;
}
void NameSpec::destroy(NameSpec*& pNameSpec) {
g_NameSpecFactory->destroy(pNameSpec);
g_NameSpecFactory->deallocate(pNameSpec);
pNameSpec = NULL;
}
void NameSpec::clear() {
g_NameSpecFactory->clear();
}
} // namespace mcld
namespace mcld {
typedef GCFactory<SectionData, MCLD_SECTIONS_PER_INPUT> SectDataFactory;
static llvm::ManagedStatic<SectDataFactory> g_SectDataFactory;
//===----------------------------------------------------------------------===//
// SectionData
//===----------------------------------------------------------------------===//
SectionData::SectionData() : m_pSection(NULL) {
}
SectionData::SectionData(LDSection& pSection) : m_pSection(&pSection) {
}
SectionData* SectionData::Create(LDSection& pSection) {
SectionData* result = g_SectDataFactory->allocate();
new (result) SectionData(pSection);
return result;
}
void SectionData::Destroy(SectionData*& pSection) {
pSection->~SectionData();
g_SectDataFactory->deallocate(pSection);
pSection = NULL;
}
void SectionData::Clear() {
g_SectDataFactory->clear();
}
} // namespace mcld
namespace mcld {
typedef GCFactory<StrToken, MCLD_SYMBOLS_PER_INPUT> StrTokenFactory;
static llvm::ManagedStatic<StrTokenFactory> g_StrTokenFactory;
//===----------------------------------------------------------------------===//
// StrToken
//===----------------------------------------------------------------------===//
StrToken::StrToken() : m_Kind(Unknown) {
}
StrToken::StrToken(Kind pKind, const std::string& pString)
: m_Kind(pKind), m_Name(pString) {
}
StrToken::~StrToken() {
}
StrToken* StrToken::create(const std::string& pString) {
StrToken* result = g_StrTokenFactory->allocate();
new (result) StrToken(String, pString);
return result;
}
void StrToken::destroy(StrToken*& pStrToken) {
g_StrTokenFactory->destroy(pStrToken);
g_StrTokenFactory->deallocate(pStrToken);
pStrToken = NULL;
}
void StrToken::clear() {
g_StrTokenFactory->clear();
}
} // namespace mcld
void
SBDebugger::Initialize ()
{
Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger::Initialize ()");
g_debugger_lifetime->Initialize(llvm::make_unique<SystemInitializerFull>(), LoadPlugin);
}
LDSection* LDSection::Create(const std::string& pName,
LDFileFormat::Kind pKind,
uint32_t pType,
uint32_t pFlag,
uint64_t pSize,
uint64_t pAddr) {
LDSection* result = g_SectFactory->allocate();
new (result) LDSection(pName, pKind, pType, pFlag, pSize, pAddr);
return result;
}
DebugPrintEnabler(unsigned PassNumber) {
#ifndef NDEBUG
OldDebugFlag = llvm::DebugFlag;
if (llvm::DebugFlag)
return;
if (DebugPassNumbers->empty())
return;
// Enable debug printing if the pass number matches
// one of the pass numbers provided as a command line option.
for (auto DebugPassNumber : *DebugPassNumbers) {
if (DebugPassNumber == PassNumber) {
llvm::DebugFlag = true;
return;
}
}
#endif
}
namespace mcld {
typedef GCFactory<RelocData, MCLD_SECTIONS_PER_INPUT> RelocDataFactory;
static llvm::ManagedStatic<RelocDataFactory> g_RelocDataFactory;
//===----------------------------------------------------------------------===//
// RelocData
//===----------------------------------------------------------------------===//
RelocData::RelocData() : m_pSection(NULL) {
}
RelocData::RelocData(LDSection& pSection) : m_pSection(&pSection) {
}
RelocData* RelocData::Create(LDSection& pSection) {
RelocData* result = g_RelocDataFactory->allocate();
new (result) RelocData(pSection);
return result;
}
void RelocData::Destroy(RelocData*& pSection) {
pSection->~RelocData();
g_RelocDataFactory->deallocate(pSection);
pSection = NULL;
}
void RelocData::Clear() {
g_RelocDataFactory->clear();
}
RelocData& RelocData::append(Relocation& pRelocation) {
m_Relocations.push_back(&pRelocation);
return *this;
}
Relocation& RelocData::remove(Relocation& pRelocation) {
iterator iter(pRelocation);
Relocation* rel = m_Relocations.remove(iter);
return *rel;
}
} // namespace mcld
namespace mcld {
typedef GCFactory<StringList, MCLD_SYMBOLS_PER_INPUT> StringListFactory;
static llvm::ManagedStatic<StringListFactory> g_StringListFactory;
//===----------------------------------------------------------------------===//
// StringList
//===----------------------------------------------------------------------===//
StringList::StringList() {
}
StringList::~StringList() {
}
void StringList::push_back(StrToken* pToken) {
m_Tokens.push_back(pToken);
}
void StringList::dump() const {
for (const_iterator it = begin(), ie = end(); it != ie; ++it)
mcld::outs() << (*it)->name() << "\t";
mcld::outs() << "\n";
}
StringList* StringList::create() {
StringList* result = g_StringListFactory->allocate();
new (result) StringList();
return result;
}
void StringList::destroy(StringList*& pStringList) {
g_StringListFactory->destroy(pStringList);
g_StringListFactory->deallocate(pStringList);
pStringList = NULL;
}
void StringList::clear() {
g_StringListFactory->clear();
}
} // namespace mcld
FragOperand* FragOperand::create(Fragment& pFragment) {
FragOperand* result = g_FragOperandFactory->allocate();
new (result) FragOperand(pFragment);
return result;
}
void SectDescOperand::clear() {
g_SectDescOperandFactory->clear();
}
void SectDescOperand::destroy(SectDescOperand*& pOperand) {
g_SectDescOperandFactory->destroy(pOperand);
g_SectDescOperandFactory->deallocate(pOperand);
pOperand = NULL;
}
SectDescOperand* SectDescOperand::create(
const SectionMap::Output* pOutputDesc) {
SectDescOperand* result = g_SectDescOperandFactory->allocate();
new (result) SectDescOperand(pOutputDesc);
return result;
}
void EhFrame::Clear()
{
g_EhFrameFactory->clear();
}
void EhFrame::Destroy(EhFrame*& pSection)
{
pSection->~EhFrame();
g_EhFrameFactory->deallocate(pSection);
pSection = NULL;
}
void IntOperand::destroy(IntOperand*& pOperand) {
g_IntOperandFactory->destroy(pOperand);
g_IntOperandFactory->deallocate(pOperand);
pOperand = NULL;
}
void SymOperand::clear() {
g_SymOperandFactory->clear();
}
SymOperand* SymOperand::create(const std::string& pName) {
SymOperand* result = g_SymOperandFactory->allocate();
new (result) SymOperand(pName);
return result;
}
void FragOperand::destroy(FragOperand*& pOperand) {
g_FragOperandFactory->destroy(pOperand);
g_FragOperandFactory->deallocate(pOperand);
pOperand = NULL;
}
void FragOperand::clear() {
g_FragOperandFactory->clear();
}
RelocData* RelocData::Create(LDSection& pSection) {
RelocData* result = g_RelocDataFactory->allocate();
new (result) RelocData(pSection);
return result;
}
void SymOperand::destroy(SymOperand*& pOperand) {
g_SymOperandFactory->destroy(pOperand);
g_SymOperandFactory->deallocate(pOperand);
pOperand = NULL;
}
void RelocData::Destroy(RelocData*& pSection) {
pSection->~RelocData();
g_RelocDataFactory->deallocate(pSection);
pSection = NULL;
}
IntOperand* IntOperand::create(uint64_t pValue) {
IntOperand* result = g_IntOperandFactory->allocate();
new (result) IntOperand(pValue);
return result;
}
void RelocData::Clear() {
g_RelocDataFactory->clear();
}
void IntOperand::clear() {
g_IntOperandFactory->clear();
}
EhFrame* EhFrame::Create(LDSection& pSection)
{
EhFrame* result = g_EhFrameFactory->allocate();
new (result) EhFrame(pSection);
return result;
}