bool CppFileContents::write(OovStringRef const fn)
{
SimpleFile file;
eOpenStatus openStat = file.open(fn, M_WriteExclusiveTrunc, OE_Binary);
OovStatus status(openStat == OS_Opened, SC_File);
if(status.ok())
{
OovString includeCov = "#include \"OovCoverage.h\"";
appendLineEnding(includeCov);
updateMemory();
status = file.write(includeCov.c_str(), includeCov.length());
}
if(status.ok())
{
status = file.write(mFileContents.data(), mFileContents.size());
}
if(!status.ok())
{
OovString str = "Unable to write %s ";
str += fn;
str += "\n";
status.report(ET_Error, str.getStr());
}
return status.ok();
}
SaveStateList CProjectItem::getSavegameList(const Common::String &target) {
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
Common::StringArray filenames;
Common::String saveDesc;
Common::String pattern = Common::String::format("%s.0??", target.c_str());
TitanicSavegameHeader header;
filenames = saveFileMan->listSavefiles(pattern);
sort(filenames.begin(), filenames.end()); // Sort to get the files in numerical order
SaveStateList saveList;
for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
const char *ext = strrchr(file->c_str(), '.');
int slot = ext ? atoi(ext + 1) : -1;
if (slot >= 0 && slot < MAX_SAVEGAME_SLOTS) {
Common::InSaveFile *in = g_system->getSavefileManager()->openForLoading(*file);
if (in) {
SimpleFile f;
f.open(in);
if (!readSavegameHeader(&f, header))
continue;
saveList.push_back(SaveStateDescriptor(slot, header._saveName));
header._thumbnail->free();
delete header._thumbnail;
delete in;
}
}
}
return saveList;
}
SimpleFile *STtitleEngine::open(const CString &name) {
Common::SeekableReadStream *stream = g_vm->_filesManager->getResource(
CString::format("TEXT/%s", name.c_str()));
assert(stream);
SimpleFile *file = new SimpleFile();
file->open(stream);
return file;
}
/// Every atom defined in __TEXT,__text needs an entry in the final
/// __unwind_info section (in order). These comes from two sources:
/// + Input __compact_unwind sections where possible (after adding the
/// personality function offset which is only known now).
/// + A synthesised reference to __eh_frame if there's no __compact_unwind
/// or too many personality functions to be accommodated.
std::vector<CompactUnwindEntry> createUnwindInfoEntries(
const SimpleFile &mergedFile,
const std::map<const Atom *, CompactUnwindEntry> &unwindLocs,
const std::vector<const Atom *> &personalities,
const std::map<const Atom *, const Atom *> &dwarfFrames) {
std::vector<CompactUnwindEntry> unwindInfos;
DEBUG(llvm::dbgs() << " Creating __unwind_info entries\n");
// The final order in the __unwind_info section must be derived from the
// order of typeCode atoms, since that's how they'll be put into the object
// file eventually (yuck!).
for (const DefinedAtom *atom : mergedFile.defined()) {
if (atom->contentType() != DefinedAtom::typeCode)
continue;
unwindInfos.push_back(finalizeUnwindInfoEntryForAtom(
atom, unwindLocs, personalities, dwarfFrames));
DEBUG(llvm::dbgs() << " Entry for " << atom->name()
<< ", final encoding="
<< llvm::format("0x%08x", unwindInfos.back().encoding)
<< '\n');
}
return unwindInfos;
}
bool CppFileContents::read(char const *fn)
{
SimpleFile file;
eOpenStatus openStat = file.open(fn, M_ReadWriteExclusive, OE_Binary);
OovStatus status(openStat == OS_Opened, SC_File);
if(status.ok())
{
int size = file.getSize();
mFileContents.resize(size);
int actual = 0;
status = file.read(mFileContents.data(), size, actual);
}
if(!status.ok())
{
OovString str = "Unable to read %s ";
str += fn;
str += "\n";
status.report(ET_Error, str.getStr());
}
return status.ok();
}
void
collectDwarfFrameEntries(const SimpleFile &mergedFile,
std::map<const Atom *, const Atom *> &dwarfFrames) {
for (const DefinedAtom *ehFrameAtom : mergedFile.defined()) {
if (ehFrameAtom->contentType() != DefinedAtom::typeCFI)
continue;
if (ArchHandler::isDwarfCIE(_isBig, ehFrameAtom))
continue;
if (const Atom *function = _archHandler.fdeTargetFunction(ehFrameAtom))
dwarfFrames[function] = ehFrameAtom;
}
}
llvm::Error perform(SimpleFile &mergedFile) override {
// Scan all references in all atoms.
for (const DefinedAtom *atom : mergedFile.defined()) {
for (const Reference *ref : *atom) {
// Look at instructions accessing the GOT.
bool canBypassGOT;
if (!_archHandler.isGOTAccess(*ref, canBypassGOT))
continue;
const Atom *target = ref->target();
assert(target != nullptr);
if (!shouldReplaceTargetWithGOTAtom(target, canBypassGOT)) {
// Update reference kind to reflect that target is a direct accesss.
_archHandler.updateReferenceToGOT(ref, false);
} else {
// Replace the target with a reference to a GOT entry.
const DefinedAtom *gotEntry = makeGOTEntry(target);
const_cast<Reference *>(ref)->setTarget(gotEntry);
// Update reference kind to reflect that target is now a GOT entry.
_archHandler.updateReferenceToGOT(ref, true);
}
}
}
// Sort and add all created GOT Atoms to master file
std::vector<const GOTEntryAtom *> entries;
entries.reserve(_targetToGOT.size());
for (auto &it : _targetToGOT)
entries.push_back(it.second);
std::sort(entries.begin(), entries.end(),
[](const GOTEntryAtom *left, const GOTEntryAtom *right) {
return (left->slotName().compare(right->slotName()) < 0);
});
for (const GOTEntryAtom *slot : entries)
mergedFile.addAtom(*slot);
return llvm::Error::success();
}
/// Remove unused EH frames.
///
/// An EH frame is considered unused if there is a corresponding compact
/// unwind atom that doesn't require the EH frame.
void pruneUnusedEHFrames(
SimpleFile &mergedFile,
const std::vector<CompactUnwindEntry> &unwindInfos,
const std::map<const Atom *, CompactUnwindEntry> &unwindLocs,
const std::map<const Atom *, const Atom *> &dwarfFrames) {
// Worklist of all 'used' FDEs.
std::vector<const DefinedAtom *> usedDwarfWorklist;
// We have to check two conditions when building the worklist:
// (1) EH frames used by compact unwind entries.
for (auto &entry : unwindInfos)
if (entry.ehFrame)
usedDwarfWorklist.push_back(cast<DefinedAtom>(entry.ehFrame));
// (2) EH frames that reference functions with no corresponding compact
// unwind info.
for (auto &entry : dwarfFrames)
if (!unwindLocs.count(entry.first))
usedDwarfWorklist.push_back(cast<DefinedAtom>(entry.second));
// Add all transitively referenced CFI atoms by processing the worklist.
std::set<const Atom *> usedDwarfFrames;
while (!usedDwarfWorklist.empty()) {
const DefinedAtom *cfiAtom = usedDwarfWorklist.back();
usedDwarfWorklist.pop_back();
usedDwarfFrames.insert(cfiAtom);
for (const auto *ref : *cfiAtom) {
const DefinedAtom *cfiTarget = dyn_cast<DefinedAtom>(ref->target());
if (cfiTarget->contentType() == DefinedAtom::typeCFI)
usedDwarfWorklist.push_back(cfiTarget);
}
}
// Finally, delete all unreferenced CFI atoms.
mergedFile.removeDefinedAtomsIf([&](const DefinedAtom *atom) {
if ((atom->contentType() == DefinedAtom::typeCFI) &&
!usedDwarfFrames.count(atom))
return true;
return false;
});
}
void collectCompactUnwindEntries(
const SimpleFile &mergedFile,
std::map<const Atom *, CompactUnwindEntry> &unwindLocs,
std::vector<const Atom *> &personalities, uint32_t &numLSDAs) {
DEBUG(llvm::dbgs() << " Collecting __compact_unwind entries\n");
for (const DefinedAtom *atom : mergedFile.defined()) {
if (atom->contentType() != DefinedAtom::typeCompactUnwindInfo)
continue;
auto unwindEntry = extractCompactUnwindEntry(atom);
unwindLocs.insert(std::make_pair(unwindEntry.rangeStart, unwindEntry));
DEBUG(llvm::dbgs() << " Entry for " << unwindEntry.rangeStart->name()
<< ", encoding="
<< llvm::format("0x%08x", unwindEntry.encoding));
if (unwindEntry.personalityFunction)
DEBUG(llvm::dbgs() << ", personality="
<< unwindEntry.personalityFunction->name()
<< ", lsdaLoc=" << unwindEntry.lsdaLocation->name());
DEBUG(llvm::dbgs() << '\n');
// Count number of LSDAs we see, since we need to know how big the index
// will be while laying out the section.
if (unwindEntry.lsdaLocation)
++numLSDAs;
// Gather the personality functions now, so that they're in deterministic
// order (derived from the DefinedAtom order).
if (unwindEntry.personalityFunction) {
auto pFunc = std::find(personalities.begin(), personalities.end(),
unwindEntry.personalityFunction);
if (pFunc == personalities.end())
personalities.push_back(unwindEntry.personalityFunction);
}
}
}
bool RigidObject::Load(const char* fn)
{
const char* ext=FileExtension(fn);
if(ext && strcmp(ext,"obj")==0) {
SimpleFile f;
f.AllowItem("mesh");
f.AllowItem("geomscale");
f.AllowItem("geomtranslate");
f.AllowItem("T");
f.AllowItem("mass");
f.AllowItem("inertia");
f.AllowItem("com");
f.AllowItem("kFriction");
f.AllowItem("kRestitution");
f.AllowItem("kStiffness");
f.AllowItem("kDamping");
f.AllowItem("autoMass");
if(!f.Load(fn)) return false;
if(!f.CheckSize("mesh",1,fn)) return false;
if(!f.CheckType("mesh",PrimitiveValue::String,fn)) return false;
string fnPath = GetFilePath(fn);
geomFile = f["mesh"][0].AsString();
string geomfn = fnPath + geomFile;
if(!LoadGeometry(geomfn.c_str()))
return false;
f.erase("mesh");
Matrix4 ident; ident.setIdentity();
Matrix4 geomT=ident;
if(f.count("geomscale") != 0) {
if(!f.CheckType("geomscale",PrimitiveValue::Double,fn)) return false;
vector<double> scale = f.AsDouble("geomscale");
if(scale.size()==1) { geomT(0,0)=geomT(1,1)=geomT(2,2)=scale[0]; }
else if(scale.size()==3) {
geomT(0,0)=scale[0];
geomT(1,1)=scale[1];
geomT(2,2)=scale[2];
}
else {
fprintf(stderr,"Invalid number of geomscale components in %s\n",fn);
return false;
}
f.erase("geomscale");
}
if(f.count("geomtranslate") != 0) {
if(!f.CheckType("geomtranslate",PrimitiveValue::Double,fn)) return false;
if(!f.CheckSize("geomtranslate",3,fn)) return false;
vector<double> trans = f.AsDouble("geomtranslate");
geomT(0,3)=trans[0];
geomT(1,3)=trans[1];
geomT(2,3)=trans[2];
f.erase("geomtranslate");
}
if(!(ident == geomT)) {
geometry.TransformGeometry(geomT);
}
if(f.count("T")==0) { T.setIdentity(); }
else {
if(!f.CheckType("T",PrimitiveValue::Double,fn)) return false;
vector<double> items = f.AsDouble("T");
if(items.size()==12) { //read 4 columns of 3
Vector3 x(items[0],items[1],items[2]);
Vector3 y(items[3],items[4],items[5]);
Vector3 z(items[6],items[7],items[8]);
Vector3 t(items[9],items[10],items[11]);
T.R.set(x,y,z); T.t=t;
}
else if(items.size()==16) { //read 4 columns of 4
Vector3 x(items[0],items[1],items[2]);
Vector3 y(items[4],items[5],items[6]);
Vector3 z(items[8],items[9],items[10]);
Vector3 t(items[12],items[13],items[14]);
T.R.set(x,y,z); T.t=t;
}
else {
fprintf(stderr,"Invalid number of transformation components in %s\n",fn);
return false;
}
f.erase("T");
}
if(f.count("mass")==0) { mass=1.0; }
else {
if(!f.CheckSize("mass",1)) return false;
if(!f.CheckType("mass",PrimitiveValue::Double)) return false;
mass = f["mass"][0].AsDouble();
f.erase("mass");
}
bool hasCOM = false;
if(f.count("com")==0) { com.setZero(); }
else {
if(!f.CheckSize("com",3)) return false;
if(!f.CheckType("com",PrimitiveValue::Double)) return false;
hasCOM = true;
com.set(f["com"][0].AsDouble(),f["com"][1].AsDouble(),f["com"][2].AsDouble());
f.erase("com");
}
if(f.count("inertia")==0) inertia.setIdentity();
else {
if(!f.CheckType("inertia",PrimitiveValue::Double,fn)) return false;
vector<double> items = f.AsDouble("inertia");
if(items.size() == 3) inertia.setDiagonal(Vector3(items[0],items[1],items[2]));
else if(items.size() == 9) {
inertia(0,0)=items[0]; inertia(0,1)=items[1]; inertia(0,2)=items[2];
inertia(1,0)=items[3]; inertia(1,1)=items[4]; inertia(1,2)=items[5];
inertia(2,0)=items[6]; inertia(2,1)=items[7]; inertia(2,2)=items[8];
}
else {
fprintf(stderr,"Invalid number of inertia matrix components in %s\n",fn);
return false;
}
f.erase("inertia");
}
if(f.count("kFriction")==0) kFriction = 0.5;
else {
if(!f.CheckSize("kFriction",1,fn)) return false;
if(!f.CheckType("kFriction",PrimitiveValue::Double,fn)) return false;
kFriction = f.AsDouble("kFriction")[0];
f.erase("kFriction");
}
if(f.count("kRestitution")==0) kRestitution = 0.5;
else {
if(!f.CheckSize("kRestitution",1,fn)) return false;
if(!f.CheckType("kRestitution",PrimitiveValue::Double,fn)) return false;
kRestitution = f.AsDouble("kRestitution")[0];
f.erase("kRestitution");
}
if(f.count("kStiffness")==0) kStiffness=Inf;
else {
if(!f.CheckSize("kStiffness",1,fn)) return false;
if(!f.CheckType("kStiffness",PrimitiveValue::Double,fn)) return false;
kStiffness = f.AsDouble("kStiffness")[0];
f.erase("kStiffness");
}
if(f.count("kDamping")==0) kDamping=Inf;
else {
if(!f.CheckSize("kDamping",1,fn)) return false;
if(!f.CheckType("kDamping",PrimitiveValue::Double,fn)) return false;
kDamping = f.AsDouble("kDamping")[0];
f.erase("kDamping");
}
if(f.count("autoMass")!=0) {
if(hasCOM) //com specified, compute inertia about given com
inertia = Inertia(*geometry,com,mass);
else
SetMassFromGeometry(mass);
f.erase("autoMass");
}
if(!f.empty()) {
for(map<string,vector<PrimitiveValue> >::const_iterator i=f.entries.begin();i!=f.entries.end();i++)
fprintf(stderr,"Unknown entry %s in object file %s\n",i->first.c_str(),fn);
}
return true;
}
else {
if(!LoadGeometry(fn)) {
printf("LoadGeometry %s failed\n",fn);
return false;
}
T.setIdentity();
mass=1.0;
com.setZero();
inertia.setZero();
kFriction = 0.5;
kRestitution = 0.5;
kStiffness=Inf;
kDamping=Inf;
if(ext)
fprintf(stderr,"Warning, loading object from .%s file %s. Setting COM and inertia matrix from geometry.\n",ext,fn);
else
fprintf(stderr,"Warning, loading object from file %s. Setting COM and inertia matrix from geometry.\n",fn);
SetMassFromGeometry(1.0);
return true;
}
}
std::error_code perform(SimpleFile &mergedFile) override {
// Skip this pass if output format uses text relocations instead of stubs.
if (!this->noTextRelocs())
return std::error_code();
// Scan all references in all atoms.
for (const DefinedAtom *atom : mergedFile.defined()) {
for (const Reference *ref : *atom) {
// Look at call-sites.
if (!this->isCallSite(*ref))
continue;
const Atom *target = ref->target();
assert(target != nullptr);
if (isa<SharedLibraryAtom>(target)) {
// Calls to shared libraries go through stubs.
_targetToUses[target].push_back(ref);
continue;
}
const DefinedAtom *defTarget = dyn_cast<DefinedAtom>(target);
if (defTarget && defTarget->interposable() != DefinedAtom::interposeNo){
// Calls to interposable functions in same linkage unit must also go
// through a stub.
assert(defTarget->scope() != DefinedAtom::scopeTranslationUnit);
_targetToUses[target].push_back(ref);
}
}
}
// Exit early if no stubs needed.
if (_targetToUses.empty())
return std::error_code();
// First add help-common and GOT slots used by lazy binding.
SimpleDefinedAtom *helperCommonAtom =
new (_file.allocator()) StubHelperCommonAtom(_file, _stubInfo);
SimpleDefinedAtom *helperCacheNLPAtom =
new (_file.allocator()) NonLazyPointerAtom(_file, _ctx.is64Bit());
SimpleDefinedAtom *helperBinderNLPAtom =
new (_file.allocator()) NonLazyPointerAtom(_file, _ctx.is64Bit());
addReference(helperCommonAtom, _stubInfo.stubHelperCommonReferenceToCache,
helperCacheNLPAtom);
addOptReference(
helperCommonAtom, _stubInfo.stubHelperCommonReferenceToCache,
_stubInfo.optStubHelperCommonReferenceToCache, helperCacheNLPAtom);
addReference(helperCommonAtom, _stubInfo.stubHelperCommonReferenceToBinder,
helperBinderNLPAtom);
addOptReference(
helperCommonAtom, _stubInfo.stubHelperCommonReferenceToBinder,
_stubInfo.optStubHelperCommonReferenceToBinder, helperBinderNLPAtom);
mergedFile.addAtom(*helperCommonAtom);
mergedFile.addAtom(*helperBinderNLPAtom);
mergedFile.addAtom(*helperCacheNLPAtom);
// Add reference to dyld_stub_binder in libSystem.dylib
auto I = std::find_if(
mergedFile.sharedLibrary().begin(), mergedFile.sharedLibrary().end(),
[&](const SharedLibraryAtom *atom) {
return atom->name().equals(_stubInfo.binderSymbolName);
});
assert(I != mergedFile.sharedLibrary().end() &&
"dyld_stub_binder not found");
addReference(helperBinderNLPAtom, _stubInfo.nonLazyPointerReferenceToBinder, *I);
// Sort targets by name, so stubs and lazy pointers are consistent
std::vector<const Atom *> targetsNeedingStubs;
for (auto it : _targetToUses)
targetsNeedingStubs.push_back(it.first);
std::sort(targetsNeedingStubs.begin(), targetsNeedingStubs.end(),
[](const Atom * left, const Atom * right) {
return (left->name().compare(right->name()) < 0);
});
// Make and append stubs, lazy pointers, and helpers in alphabetical order.
unsigned lazyOffset = 0;
for (const Atom *target : targetsNeedingStubs) {
auto *stub = new (_file.allocator()) StubAtom(_file, _stubInfo);
auto *lp =
new (_file.allocator()) LazyPointerAtom(_file, _ctx.is64Bit());
auto *helper = new (_file.allocator()) StubHelperAtom(_file, _stubInfo);
addReference(stub, _stubInfo.stubReferenceToLP, lp);
addOptReference(stub, _stubInfo.stubReferenceToLP,
_stubInfo.optStubReferenceToLP, lp);
addReference(lp, _stubInfo.lazyPointerReferenceToHelper, helper);
addReference(lp, _stubInfo.lazyPointerReferenceToFinal, target);
addReference(helper, _stubInfo.stubHelperReferenceToImm, helper);
addReferenceAddend(helper, _stubInfo.stubHelperReferenceToImm, helper,
lazyOffset);
addReference(helper, _stubInfo.stubHelperReferenceToHelperCommon,
helperCommonAtom);
mergedFile.addAtom(*stub);
mergedFile.addAtom(*lp);
mergedFile.addAtom(*helper);
// Update each reference to use stub.
for (const Reference *ref : _targetToUses[target]) {
assert(ref->target() == target);
// Switch call site to reference stub atom instead.
const_cast<Reference *>(ref)->setTarget(stub);
}
// Calculate new offset
lazyOffset += target->name().size() + 12;
}
return std::error_code();
}
std::error_code perform(SimpleFile &mergedFile) override {
// Add the image info.
mergedFile.addAtom(*getImageInfo());
return std::error_code();
}
llvm::Error perform(SimpleFile &mergedFile) override {
DEBUG(llvm::dbgs() << "MachO Compact Unwind pass\n");
std::map<const Atom *, CompactUnwindEntry> unwindLocs;
std::map<const Atom *, const Atom *> dwarfFrames;
std::vector<const Atom *> personalities;
uint32_t numLSDAs = 0;
// First collect all __compact_unwind and __eh_frame entries, addressable by
// the function referred to.
collectCompactUnwindEntries(mergedFile, unwindLocs, personalities,
numLSDAs);
collectDwarfFrameEntries(mergedFile, dwarfFrames);
// Skip rest of pass if no unwind info.
if (unwindLocs.empty() && dwarfFrames.empty())
return llvm::Error::success();
// FIXME: if there are more than 4 personality functions then we need to
// defer to DWARF info for the ones we don't put in the list. They should
// also probably be sorted by frequency.
assert(personalities.size() <= 4);
// TODO: Find commmon encodings for use by compressed pages.
std::vector<uint32_t> commonEncodings;
// Now sort the entries by final address and fixup the compact encoding to
// its final form (i.e. set personality function bits & create DWARF
// references where needed).
std::vector<CompactUnwindEntry> unwindInfos = createUnwindInfoEntries(
mergedFile, unwindLocs, personalities, dwarfFrames);
// Remove any unused eh-frame atoms.
pruneUnusedEHFrames(mergedFile, unwindInfos, unwindLocs, dwarfFrames);
// Finally, we can start creating pages based on these entries.
DEBUG(llvm::dbgs() << " Splitting entries into pages\n");
// FIXME: we split the entries into pages naively: lots of 4k pages followed
// by a small one. ld64 tried to minimize space and align them to real 4k
// boundaries. That might be worth doing, or perhaps we could perform some
// minor balancing for expected number of lookups.
std::vector<UnwindInfoPage> pages;
auto remainingInfos = llvm::makeArrayRef(unwindInfos);
do {
pages.push_back(UnwindInfoPage());
// FIXME: we only create regular pages at the moment. These can hold up to
// 1021 entries according to the documentation.
unsigned entriesInPage = std::min(1021U, (unsigned)remainingInfos.size());
pages.back().entries = remainingInfos.slice(0, entriesInPage);
remainingInfos = remainingInfos.slice(entriesInPage);
DEBUG(llvm::dbgs()
<< " Page from " << pages.back().entries[0].rangeStart->name()
<< " to " << pages.back().entries.back().rangeStart->name() << " + "
<< llvm::format("0x%x", pages.back().entries.back().rangeLength)
<< " has " << entriesInPage << " entries\n");
} while (!remainingInfos.empty());
auto *unwind = new (_file.allocator())
UnwindInfoAtom(_archHandler, _file, _isBig, personalities,
commonEncodings, pages, numLSDAs);
mergedFile.addAtom(*unwind);
// Finally, remove all __compact_unwind atoms now that we've processed them.
mergedFile.removeDefinedAtomsIf([](const DefinedAtom *atom) {
return atom->contentType() == DefinedAtom::typeCompactUnwindInfo;
});
return llvm::Error::success();
}
