bool SearchPathOptions::parse(LinkerConfig& pConfig, LinkerScript& pScript)
{
// set --sysroot
if (!m_SysRoot.empty()) {
if (exists(m_SysRoot) && is_directory(m_SysRoot))
pScript.setSysroot(m_SysRoot);
}
// set -L[path]
llvm::cl::list<std::string>::iterator sd;
llvm::cl::list<std::string>::iterator sdEnd = m_SearchDirList.end();
for (sd = m_SearchDirList.begin(); sd != sdEnd; ++sd) {
if (!pScript.directories().insert(*sd)) {
// FIXME: need a warning function
errs() << "WARNING: can not open search directory `-L"
<< *sd
<< "'.\n";
}
}
// set -no-stdlib
pConfig.options().setNoStdlib(m_NoStdlib);
// set --rpath [path]
llvm::cl::list<std::string>::iterator rp;
llvm::cl::list<std::string>::iterator rpEnd = m_RuntimePath.end();
for (rp = m_RuntimePath.begin(); rp != rpEnd; ++rp) {
pConfig.options().getRpathList().push_back(*rp);
}
return true;
}
// FIXME: LinkerConfig& pConfig should be constant
bool MCLDEmulateELF(LinkerScript& pScript, LinkerConfig& pConfig) {
// set up section map
if (pConfig.options().getScriptList().empty() &&
pConfig.codeGenType() != LinkerConfig::Object) {
const unsigned int map_size = (sizeof(map) / sizeof(map[0]));
for (unsigned int i = 0; i < map_size; ++i) {
std::pair<SectionMap::mapping, bool> res =
pScript.sectionMap().insert(map[i].from, map[i].to, map[i].policy);
if (!res.second)
return false;
}
} else {
// FIXME: this is the hack to help assignment processing in current
// implementation.
pScript.sectionMap().insert("", "");
}
if (!pConfig.options().nostdlib()) {
// TODO: check if user sets the default search path instead via -Y option
// set up default search path
switch (pConfig.targets().triple().getOS()) {
case llvm::Triple::NetBSD:
pScript.directories().insert("=/usr/lib");
break;
case llvm::Triple::Win32:
pScript.directories().insert("=/mingw/lib");
break;
default:
pScript.directories().insert("=/lib");
pScript.directories().insert("=/usr/lib");
break;
}
}
return true;
}
bool TargetControlOptions::parse(LinkerConfig& pConfig)
{
// set -G [size]
pConfig.options().setGPSize(m_GPSize);
// set --warn-shared-textrel
pConfig.options().setWarnSharedTextrel(m_WarnSharedTextrel);
// set --fix-cortex-a8
if (m_FIXCA8)
mcld::warning(mcld::diag::warn_unsupported_option) << m_FIXCA8.ArgStr;
return true;
}
static bool MCLDEmulateARMELF(LinkerScript& pScript, LinkerConfig& pConfig)
{
if (!MCLDEmulateELF(pScript, pConfig))
return false;
// set up bitclass and endian
pConfig.targets().setEndian(TargetOptions::Little);
pConfig.targets().setBitClass(32);
// set up target-dependent constraints of attributes
pConfig.attribute().constraint().enableWholeArchive();
pConfig.attribute().constraint().enableAsNeeded();
pConfig.attribute().constraint().setSharedSystem();
// set up the predefined attributes
pConfig.attribute().predefined().unsetWholeArchive();
pConfig.attribute().predefined().unsetAsNeeded();
pConfig.attribute().predefined().setDynamic();
// set up section map
if (pConfig.options().getScriptList().empty() &&
pConfig.codeGenType() != LinkerConfig::Object) {
pScript.sectionMap().insert(".ARM.exidx*", ".ARM.exidx");
pScript.sectionMap().insert(".ARM.extab*", ".ARM.extab");
pScript.sectionMap().insert(".ARM.attributes*", ".ARM.attributes");
}
return true;
}
bool DynamicSectionOptions::parse(LinkerConfig& pConfig,
LinkerScript& pScript) {
// set up entry point from -e
pScript.setEntry(m_Entry);
// --Bsymbolic
pConfig.options().setBsymbolic(m_Bsymbolic);
// --Bgroup
pConfig.options().setBgroup(m_Bgroup);
// set --soname [soname]
pConfig.options().setSOName(m_SOName);
// set -z options
llvm::cl::list<ZOption>::iterator zOpt;
llvm::cl::list<ZOption>::iterator zOptEnd = m_ZOptionList.end();
for (zOpt = m_ZOptionList.begin(); zOpt != zOptEnd; ++zOpt) {
pConfig.options().addZOption(*zOpt);
}
// set --no-undefined
if (llvm::cl::BOU_UNSET != m_NoUndefined)
pConfig.options().setNoUndefined(llvm::cl::BOU_TRUE == m_NoUndefined);
// set --allow-multiple-definition
if (llvm::cl::BOU_UNSET != m_AllowMulDefs)
pConfig.options().setMulDefs(llvm::cl::BOU_TRUE == m_AllowMulDefs);
// set --dynamic-linker [dyld]
pConfig.options().setDyld(m_Dyld);
// set --enable-new-dtags
pConfig.options().setNewDTags(m_EnableNewDTags);
// set --auxiliary, -f
llvm::cl::list<std::string>::iterator aux;
llvm::cl::list<std::string>::iterator auxEnd = m_Auxiliary.end();
for (aux = m_Auxiliary.begin(); aux != auxEnd; ++aux)
pConfig.options().getAuxiliaryList().push_back(*aux);
// set --filter, -F
pConfig.options().setFilter(m_Filter);
return true;
}
//===----------------------------------------------------------------------===//
// Testcases
//===----------------------------------------------------------------------===//
TEST_F(ELFBinaryReaderTest, is_myformat) {
LinkerScript script;
Module module("test", script);
LinkerConfig config;
IRBuilder builder(module, config);
ELFBinaryReader* reader = new ELFBinaryReader(builder, config);
Input input("test.bin");
bool doContinue = false;
config.options().setBinaryInput();
ASSERT_TRUE(reader->isMyFormat(input, doContinue));
config.options().setBinaryInput(false);
ASSERT_FALSE(reader->isMyFormat(input, doContinue));
delete reader;
}
/// getEntryPoint
uint64_t ELFObjectWriter::getEntryPoint(const LinkerConfig& pConfig,
const Module& pModule) const
{
llvm::StringRef entry_name;
if (pConfig.options().hasEntry())
entry_name = pConfig.options().entry();
else
entry_name = target().getInfo().entry();
uint64_t result = 0x0;
bool issue_warning = (pConfig.options().hasEntry() &&
LinkerConfig::Object != pConfig.codeGenType() &&
LinkerConfig::DynObj != pConfig.codeGenType());
const LDSymbol* entry_symbol = pModule.getNamePool().findSymbol(entry_name);
// found the symbol
if (NULL != entry_symbol) {
if (entry_symbol->desc() != ResolveInfo::Define && issue_warning) {
llvm::errs() << "WARNING: entry symbol '"
<< entry_symbol->name()
<< "' exists but is not defined.\n";
}
result = entry_symbol->value();
}
// not in the symbol pool
else {
// We should parse entry as a number.
// @ref GNU ld manual, Options -e. e.g., -e 0x1000.
char* endptr;
result = strtoull(entry_name.data(), &endptr, 0);
if (*endptr != '\0') {
if (issue_warning) {
llvm::errs() << "cannot find entry symbol '"
<< entry_name.data()
<< "'.\n";
}
result = 0x0;
}
}
return result;
}
bool OptimizationOptions::parse(LinkerConfig& pConfig)
{
// set --gc-sections
if (m_GCSections)
pConfig.options().setGCSections();
// set --ld-generated-unwind-info (or not)
pConfig.options().setGenUnwindInfo(m_GenUnwindInfo);
// set --icf [mode]
switch (m_ICF) {
case ICF_None:
break;
case ICF_All:
case ICF_Safe:
default:
warning(mcld::diag::warn_unsupported_option) << m_ICF.ArgStr;
break;
}
return true;
}
bool OutputFormatOptions::parse(mcld::Module& pModule, LinkerConfig& pConfig)
{
if (!parseOutput(pModule, pConfig)) {
mcld::unreachable(mcld::diag::unrecognized_output_file) << pModule.name();
return false;
}
if (mcld::Input::Binary == m_Format)
pConfig.options().setBinaryInput();
pConfig.options().setStripDebug(m_StripDebug || m_StripAll);
if (m_StripAll)
pConfig.options().setStripSymbols(mcld::GeneralOptions::StripAllSymbols);
else if (m_DiscardAll)
pConfig.options().setStripSymbols(mcld::GeneralOptions::StripLocals);
else if (m_DiscardLocals)
pConfig.options().setStripSymbols(mcld::GeneralOptions::StripTemporaries);
else
pConfig.options().setStripSymbols(mcld::GeneralOptions::KeepAllSymbols);
pConfig.options().setEhFrameHdr(m_EhFrameHdr);
pConfig.options().setPIE(m_PIE);
pConfig.options().setNMagic(m_NMagic);
pConfig.options().setOMagic(m_OMagic);
pConfig.options().setHashStyle(m_HashStyle);
pConfig.options().setExportDynamic(m_ExportDynamic);
if (m_NoWarnMismatch)
pConfig.options().setWarnMismatch(false);
else
pConfig.options().setWarnMismatch(true);
// build-id
// exclude-libs
return true;
}