-void LLVMDisassembler::disassemble() {
- std::stack<LLVMFunction*> remaining_functions;
- std::stack<LLVMBasicBlock*> remaining_blocks;
- SectionRef text_section = sections[".text"];
-
- std::for_each(symbols.begin(), symbols.end(),
- [&](std::pair<const std::string, SymbolRef> x) {
- uint64_t result;
- bool contains;
- SymbolRef::Type symbol_type;
-
- if (text_section.containsSymbol(x.second, contains) || !contains)
- return;
-
- if (x.second.getType(symbol_type)
- || SymbolRef::ST_Function != symbol_type)
- return;
-
- if (!x.second.getAddress(result)) {
- remaining_functions.push(new LLVMFunction(x.first, result));
- LOG4CXX_DEBUG(logger, "Disasembling " << x.first);
- }
- });
-
- StringRef bytes;
- text_section.getContents(bytes);
- StringRefMemoryObject ref(bytes);
-
- while (remaining_functions.size()) {
- LLVMFunction * current_function = remaining_functions.top();
- remaining_functions.pop();
-
- LOG4CXX_INFO(logger, "Handling function " << current_function->getName());
-
- // if ("_start" != current_function->getName())
- // continue;
-
- remaining_blocks.push(new LLVMBasicBlock(current_function->getStartAddress()));
-
- while (remaining_blocks.size()) {
- LLVMBasicBlock * current_block = remaining_blocks.top();
- remaining_blocks.pop();
-
- LOG4CXX_INFO(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())) {
- LOG4CXX_DEBUG(logger, "Inst Size " << inst_size);
-
- uint8_t bytes[inst_size+2];
- ref.readBytes(current_address, inst_size, bytes);
- s << '\t';
- for(uint8_t* cur = bytes; cur < bytes + inst_size; ++cur) {
- s.write_hex(*cur);
- s << ' ';
- }
- s << '\t';
-
- IP->printInst(&inst, s, "");
-
- LOG4CXX_DEBUG(logger, std::hex << current_address + base_address << s.str());
-
- uint64_t jmptarget;
- if (MIA->evaluateBranch(inst, current_address, inst_size, jmptarget)) {
- jmptarget += base_address;
- if (!MIA->isIndirectBranch(inst)) {
- if (MIA->isCall(inst)) {
- if (blocks.find(jmptarget) == blocks.end())
- remaining_functions.push(new LLVMFunction("<Unnamed>", jmptarget));
- } else {
- if (blocks.find(jmptarget) == blocks.end())
- remaining_blocks.push(new LLVMBasicBlock(jmptarget));
- if (MIA->isConditionalBranch(inst)) {
- jmptarget = base_address + current_address + inst_size;
- if (blocks.find(jmptarget) == blocks.end())
- remaining_blocks.push(new LLVMBasicBlock(jmptarget));
- }
- }
- }
- }
- } else {
- inst_size = 0;
- }
-
-
- if (inst_size == 0 || MIA->isTerminator(inst) || MIA->isBranch(inst)) {
- current_block->setEndAddress(current_address + base_address);
- blocks.insert(std::make_pair(current_block->getStartAddress(), current_block));
- LOG4CXX_INFO(logger, "Finished Block at " << current_block->getEndAddress());
- break;
- }
- current_address += inst_size;
- }
- }
- LOG4CXX_INFO(logger, "Finished function " << current_function->getName());
- }
+template <typename ELFT>
+Function* LLVMDisassembler<ELFT>::disassembleFunctionAt(uint64_t address, const std::string& name) {
+ SectionRef text_section = sections[".text"];
+ uint64_t base_address, size;
+ text_section.getAddress(base_address);
+ text_section.getSize(size);
+
+ if (address < base_address ||
+ address >= base_address + size) {
+ return NULL;
+ }
+
+ if (functions.find(address) != functions.end()) {
+ return functions[address];
+ }
+
+ LLVMFunction * function;
+ if (name == "") {
+ std::stringstream s;
+ s << "<Unnamed 0x" << std::hex << address << ">";
+ function = new LLVMFunction(s.str(), address);
+ } else {
+ function = new LLVMFunction(name, address);
+ }
+ functions.insert(std::make_pair(address, function));
+
+ disassembleFunction(function);
+
+ return function;