void MachOLinkingContext::addPasses(PassManager &pm) {
pm.add(std::unique_ptr<Pass>(new LayoutPass(registry())));
if (needsStubsPass())
mach_o::addStubsPass(pm, *this);
if (needsGOTPass())
mach_o::addGOTPass(pm, *this);
}
bool MachOLinkingContext::validateImpl(raw_ostream &diagnostics) {
// TODO: if -arch not specified, look at arch of first .o file.
if (_currentVersion && _outputMachOType != MH_DYLIB) {
diagnostics << "error: -current_version can only be used with dylibs\n";
return false;
}
if (_compatibilityVersion && _outputMachOType != MH_DYLIB) {
diagnostics
<< "error: -compatibility_version can only be used with dylibs\n";
return false;
}
if (_deadStrippableDylib && _outputMachOType != MH_DYLIB) {
diagnostics
<< "error: -mark_dead_strippable_dylib can only be used with dylibs.\n";
return false;
}
if (!_bundleLoader.empty() && outputMachOType() != MH_BUNDLE) {
diagnostics
<< "error: -bundle_loader can only be used with Mach-O bundles\n";
return false;
}
// If -exported_symbols_list used, all exported symbols must be defined.
if (_exportMode == ExportMode::whiteList) {
for (const auto &symbol : _exportedSymbols)
addInitialUndefinedSymbol(symbol.getKey());
}
// If -dead_strip, set up initial live symbols.
if (deadStrip()) {
// Entry point is live.
if (outputTypeHasEntry())
addDeadStripRoot(entrySymbolName());
// Lazy binding helper is live.
if (needsStubsPass())
addDeadStripRoot(binderSymbolName());
// If using -exported_symbols_list, make all exported symbols live.
if (_exportMode == ExportMode::whiteList) {
setGlobalsAreDeadStripRoots(false);
for (const auto &symbol : _exportedSymbols)
addDeadStripRoot(symbol.getKey());
}
}
addOutputFileDependency(outputPath());
return true;
}
void MachOLinkingContext::addPasses(PassManager &pm) {
mach_o::addLayoutPass(pm, *this);
if (needsStubsPass())
mach_o::addStubsPass(pm, *this);
if (needsCompactUnwindPass())
mach_o::addCompactUnwindPass(pm, *this);
if (needsGOTPass())
mach_o::addGOTPass(pm, *this);
if (needsTLVPass())
mach_o::addTLVPass(pm, *this);
if (needsShimPass())
mach_o::addShimPass(pm, *this); // Shim pass must run after stubs pass.
}