void MachOLoader::loadDylibs(const MachO& mach, bool nobind, bool bindLazy)
{
for (std::string dylib : mach.dylibs())
{
// __darwin_dlopen checks if already loaded
// automatically adds a reference if so
int flags = DARWIN_RTLD_GLOBAL;
if (nobind)
flags |= __DARLING_RTLD_NOBIND;
if (bindLazy)
flags |= DARWIN_RTLD_LAZY;
else
flags |= DARWIN_RTLD_NOW;
if (!Darling::DlopenWithContext(dylib.c_str(), flags, m_rpathContext))
{
LOG << "Failed to dlopen " << dylib << ", throwing an exception\n";
std::stringstream ss;
ss << "Cannot load " << dylib << ": " << __darwin_dlerror();
throw std::runtime_error(ss.str());
}
}
}
void printBinInfo(const char* path, const char* arch, const char* opt)
{
MachO* macho = MachO::readFile(path, arch, true);
if (!macho)
throw std::runtime_error("Load failed");
OpMode opmode = getOpMode(opt);
std::cout << "Platform: " << macho->platform() << std::endl;
switch (opmode)
{
case ModeDylibs:
{
std::cout << "Dylibs:\n";
for (const char* name : macho->dylibs())
{
std::cout << "\t" << name << std::endl;
}
break;
}
case ModeSymbols:
{
std::cout << "Symbols:\n";
for (const MachO::Symbol& s : macho->symbols())
{
if (!s.addr)
continue;
std::cout << '\t' << s.name << " at " << "[0x" << std::hex << std::setfill('0');
if (macho->is64())
std::cout << std::setw(16);
else
std::cout << std::setw(8);
std::cout << s.addr << std::setw(0) << std::dec << ']' << std::endl;
}
break;
}
case ModeExports:
{
std::cout << "Exports:\n";
for (const MachO::Export* e : macho->exports())
{
std::cout << '\t' << e->name << " at " << "[0x" << std::hex << std::setfill('0');
if (macho->is64())
std::cout << std::setw(16);
else
std::cout << std::setw(8);
std::cout << e->addr << std::setw(0) << "] (flag: " << e->flag << ")" << std::dec << std::endl;
}
break;
}
case ModeBinds:
{
std::cout << "Binds:\n";
for (const MachO::Bind* b : macho->binds())
{
std::cout << '\t' << b->name << " at " << "[0x" << std::hex << std::setfill('0');
if (macho->is64())
std::cout << std::setw(16);
else
std::cout << std::setw(8);
std::cout << b->vmaddr << std::setw(0) << "] ";
if (!b->is_classic)
std::cout << "(addend: " << b->addend;
else
std::cout << "(value: " << b->value;
std::cout << ", type: " << int(b->type) << ", ordinal: " << int(b->ordinal) << ")";
if (b->is_weak)
std::cout << 'W';
if (b->is_classic)
std::cout << 'C';
if (b->is_lazy)
std::cout << 'L';
std::cout << std::dec << std::endl;
}
break;
}
case ModeSegments:
{
std::cout << "Segments:\n" << std::hex;
printSegments(macho->segments64());
printSegments(macho->segments());
break;
}
case ModeRebases:
{
std::cout << "Rebases:\n";
for (MachO::Rebase* r : macho->rebases())
{
std::cout << "\t at [0x" << std::hex << std::setfill('0');
if (macho->is64())
std::cout << std::setw(16);
else
std::cout << std::setw(8);
std::cout << r->vmaddr << std::dec << std::setw(0) << "]\n";
}
break;
}
case ModeRelocations:
{
std::cout << "External relocations:\n";
for (MachO::Relocation* r : macho->relocations())
{
std::cout << '\t' << r->name << " at " << "[0x" << std::hex << std::setfill('0');
if (macho->is64())
std::cout << std::setw(16);
else
std::cout << std::setw(8);
std::cout << r->addr << std::setw(0) << "] ";
if (r->pcrel)
std::cout << "PC-REL";
std::cout << std::endl;
}
break;
}
}
delete macho;
}
