- for (auto x = symbols.begin(); x != symbols.end(); ++x) {
- uint64_t result;
- bool contains;
- SymbolRef::Type symbol_type;
-
-
- if (text_section.containsSymbol(x->second, contains) || !contains)
- continue;
-
- if (x->second.getType(symbol_type)
- || SymbolRef::ST_Function != symbol_type)
- continue;
-
- if (!x->second.getAddress(result)) {
- LLVMFunction * fun = new LLVMFunction(x->first, result);
- remaining_functions.push(fun);
- functions.insert(std::make_pair(result, fun));
- LOG4CXX_DEBUG(logger, "Disasembling " << x->first);
- }
- }
-
- if (binary->isELF()) {
- bool is64bit = (binary->getData()[4] == 0x02);
-
- uint64_t entry(0);
- for (int i(0); i < (is64bit? 8 : 4); ++i) {
- if (binary->isLittleEndian()) {
- entry |= (unsigned int)((unsigned char)binary->getData()[0x18 + i]) << 8*i;
- } else {
- entry = entry << 8;
- entry |= (unsigned char)binary->getData()[0x18 + i];
- }
- }
- if (functions.find(entry) == functions.end()) {
- LOG4CXX_DEBUG(logger, "Adding entry at: " << std::hex << entry);
- std::stringstream s;
- s << "<_start 0x" << std::hex << entry << ">";
- LLVMFunction * fun = new LLVMFunction(s.str(), entry);
- functions.insert(std::make_pair(entry, fun));
- remaining_functions.push(fun);
- }
- }
-
- if (functions.empty()) {
- uint64_t text_entry;
- text_section.getAddress(text_entry);
- LOG4CXX_INFO(logger, "No Symbols found, starting at the beginning of the text segment");
-
- std::stringstream s;
- s << "<Unnamed 0x" << std::hex << text_entry << ">";
- LLVMFunction * fun = new LLVMFunction(s.str(), text_entry);
- functions.insert(std::make_pair(text_entry, fun));
- remaining_functions.push(fun);
- }
-
- StringRef bytes;
- text_section.getContents(bytes);
- StringRefMemoryObject ref(bytes);
-
- while (remaining_functions.size()) {
- LLVMFunction * current_function = remaining_functions.top();
- remaining_functions.pop();
-
- LOG4CXX_DEBUG(logger, "Handling function " << current_function->getName());
-
- LLVMBasicBlock * block = new LLVMBasicBlock(current_function->getStartAddress(), this);
- remaining_blocks.push(block);
- blocks.insert(std::make_pair(block->getStartAddress(), block));
-
- while (remaining_blocks.size()) {
- LLVMBasicBlock * current_block = remaining_blocks.top();
- remaining_blocks.pop();
-
- LOG4CXX_DEBUG(logger, "Handling Block starting at " << std::hex << current_block->getStartAddress());
-
- uint64_t inst_size;
- uint64_t base_address;
- text_section.getAddress(base_address);
- uint64_t current_address = current_block->getStartAddress() - base_address;
- while(true) {
- MCInst inst;
- std::string buf;
- llvm::raw_string_ostream s(buf);
-
- if(llvm::MCDisassembler::Success ==
- DisAsm->getInstruction(inst, inst_size, ref, current_address, nulls(), nulls())) {
-
- uint64_t jmptarget;
- if (MIA->evaluateBranch(inst, current_address, inst_size, jmptarget)) {
- jmptarget += base_address;
- if (!MIA->isIndirectBranch(inst)) {
- if (MIA->isCall(inst)) {
- if (functions.find(jmptarget) == functions.end()) {
- std::stringstream s;
- s << "<Unnamed 0x" << std::hex << jmptarget << ">";
- LLVMFunction * fun = new LLVMFunction(s.str(), jmptarget);
- functions.insert(std::make_pair(jmptarget, fun));
- remaining_functions.push(fun);
- }
- } else {
- current_block->setNextBlock(0, jmptarget);
- if (blocks.find(jmptarget) == blocks.end()) {
- LLVMBasicBlock * block = new LLVMBasicBlock(jmptarget, this);
- blocks.insert(std::make_pair(block->getStartAddress(), block));
- remaining_blocks.push(block);
- }
- if (MIA->isConditionalBranch(inst)) {
- jmptarget = base_address + current_address + inst_size;
- current_block->setNextBlock(1, jmptarget);
- if (blocks.find(jmptarget) == blocks.end()) {
- LLVMBasicBlock * block = new LLVMBasicBlock(jmptarget, this);
- blocks.insert(std::make_pair(block->getStartAddress(), block));
- remaining_blocks.push(block);
- }
- }
- }
- }
- }
- } else {
- inst_size = 0;
- }
-
-
- if (inst_size == 0 || MIA->isTerminator(inst) || MIA->isBranch(inst)) {
- current_block->setEndAddress(current_address + base_address + inst_size);
- LOG4CXX_DEBUG(logger, "Finished Block at " << std::hex <<
- current_block->getEndAddress());
- break;
- }
- current_address += inst_size;
- }
- }
- LOG4CXX_DEBUG(logger, "Finished function " << current_function->getName());
- }
+ for (auto x = symbols.begin(); x != symbols.end(); ++x) {
+ uint64_t result;
+ bool contains;
+ SymbolRef::Type symbol_type;
+
+
+ if (text_section.containsSymbol(x->second, contains) || !contains)
+ continue;
+
+ if (x->second.getType(symbol_type)
+ || SymbolRef::ST_Function != symbol_type)
+ continue;
+
+ if (!x->second.getAddress(result)) {
+ Function * fun = manager->newFunction(result);
+ fun->setName(x->first);
+ remaining_functions.push_back(fun);
+ LOG4CXX_DEBUG(logger, "Disasembling " << x->first);
+ }
+ }
+
+ for (Function* function : remaining_functions) {
+ disassembleFunction(function);
+ manager->finishFunction(function);
+ }
+
+ if (binary->isELF()) {
+ uint64_t _entryAddress = entryAddress();
+ LOG4CXX_DEBUG(logger, "Adding entryAddress at: " << std::hex << _entryAddress);
+ std::stringstream s;
+ s << "<_start 0x" << std::hex << _entryAddress << ">";
+
+ disassembleFunctionAt(_entryAddress, s.str());
+ }
+
+ if (!manager->hasFunctions()) {
+ uint64_t text_entry;
+ text_section.getAddress(text_entry);
+ LOG4CXX_INFO(logger, "No Symbols found, starting at the beginning of the text segment");
+ disassembleFunctionAt(text_entry);
+ }
+}
+
+template <>
+uint64_t LLVMDisassembler<COFFT>::entryAddress() {
+ const auto coffobject = dyn_cast<COFFObjectFile>(o);
+ const struct pe32_header* pe32_header;
+ const struct pe32plus_header* pe32plus_header;
+
+ coffobject->getPE32PlusHeader(pe32plus_header);
+
+ if (pe32plus_header) {
+ return pe32plus_header->AddressOfEntryPoint;
+ } else {
+ coffobject->getPE32Header(pe32_header);
+ return pe32_header->AddressOfEntryPoint;
+ }
+}
+
+template <typename ELFT>
+uint64_t LLVMDisassembler<ELFT>::entryAddress() {
+ const auto elffile = dyn_cast<ELFObjectFile<ELFT>>(o)->getELFFile();
+ const auto * header = elffile->getHeader();
+
+ return header->e_entry;
+}
+
+template <typename ELFT>
+void LLVMDisassembler<ELFT>::splitBlocks(Function* function) {
+ SectionRef text_section = sections[".text"];
+ StringRef bytes;
+ text_section.getContents(bytes);
+ StringRefMemoryObject ref(bytes);