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PassStructure.cpp
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PassStructure.cpp
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#include <chrono>
#include "ExceptionThrow.h"
#include "utils.h"
#include "PassStructure.h"
#include "rapidjson/prettywriter.h"
#include "PassSupport.h"
namespace cchips {
std::atomic_uint64_t Module::m_insn_counts = 0;
bool Module::InitializeAbi()
{
if (!Valid()) return false;
switch (m_module_context->GetBits())
{
case 32:
{
m_abi = std::make_shared<AbiX86>();
}
break;
case 64:
{
m_abi = std::make_shared<AbiX64>();
}
break;
default:
;
}
return (m_abi != nullptr);
}
bool Module::InitializeCommonRegister()
{
if (!Valid()) return false;
if (!m_abi) return false;
std::uint8_t* address = 0;
for (auto& reg : m_abi->getReg2Size()) {
std::string name = GetCapstoneImplment().GetRegName(reg.first);
if (!name.length()) continue;
std::stringstream ss;
ss << GLOBAL_REG_PREFIX << name;
std::shared_ptr<GlobalVariable> reg_ptr = std::make_shared<GlobalVariable>(shared_from_this(), ss.str(), address, GlobalVariable::variable_reg, reg.second / BYTES_SIZE);
m_globalvariable_list.emplace(address, std::move(reg_ptr));
address++;
}
return true;
}
bool Module::InitializeGlobalIFunction()
{
if (!Valid()) return false;
const std::unique_ptr<ImportTable>& import_table = m_module_context->GetPeFormat()->getImportTable();
if (import_table) {
int num_funcs = import_table->getNumberOfImports();
for (int i = 0; i < num_funcs; i++) {
auto* import_entry = import_table->getImport(i);
if (!import_entry) continue;
std::unique_ptr<GlobalIFunc::func_struc> func_ptr = std::make_unique<GlobalIFunc::func_struc>();
if (!func_ptr) return false;
func_ptr->type = GlobalIFunc::func_struc::func_import;
func_ptr->file_name = import_table->getLibrary(import_entry->getLibraryIndex());
func_ptr->func_name = import_entry->getName();
if (!func_ptr->func_name.length()) continue;
import_entry->getOrdinalNumber(func_ptr->ordinal_number);
func_ptr->address = reinterpret_cast<std::uint8_t*>(import_entry->getAddress());
tls_check_struct *tls = check_get_tls();
if (tls) {
tls->active = 1;
if (setjmp(tls->jb) == 0) {
if (GetContext()->isLoadingFile()) {
func_ptr->to_address = (std::uint8_t*)(*reinterpret_cast<std::uint32_t*>(func_ptr->address));
}
else {
func_ptr->to_address = *reinterpret_cast<std::uint8_t**>(func_ptr->address);
}
tls->active = 0;
}
else {
//execption occur
tls->active = 0;
continue;
}
}
AddGlobalIFunc(std::move(func_ptr));
}
}
const std::unique_ptr<ExportTable>& export_table = m_module_context->GetPeFormat()->getExportTable();
if (export_table) {
int num_funcs = export_table->getNumberOfExports();
for (int i = 0; i < num_funcs; i++) {
auto* export_entry = export_table->getExport(i);
if (!export_entry) continue;
std::unique_ptr<GlobalIFunc::func_struc> func_ptr = std::make_unique<GlobalIFunc::func_struc>();
if (!func_ptr) return false;
func_ptr->type = GlobalIFunc::func_struc::func_export;
func_ptr->file_name = export_table->getName();
func_ptr->func_name = export_entry->getName();
if (!func_ptr->func_name.length()) continue;
export_entry->getOrdinalNumber(func_ptr->ordinal_number);
func_ptr->address = reinterpret_cast<std::uint8_t*>(export_entry->getAddress());
func_ptr->to_address = func_ptr->address;
AddGlobalIFunc(std::move(func_ptr));
}
}
return true;
}
bool Module::Initialize() {
if (!m_precache_address) {
if (m_precache_path.empty()) {
m_precache_address = reinterpret_cast<std::uint8_t*>(GetModuleHandle(nullptr));
m_module_context = std::make_unique<ModuleContext>(m_precache_address);
}
else {
m_module_context = std::make_unique<ModuleContext>(m_precache_path);
}
}
else {
m_module_context = std::make_unique<ModuleContext>(m_precache_address);
}
if (m_module_context && m_module_context->Valid()) {
InitializeAbi();
InitializeCommonRegister();
InitializeGlobalIFunction();
return true;
}
m_module_context = nullptr;
m_globalvariable_list.clear();
m_function_list.clear();
m_globalifunc_list.clear();
return false;
}
bool Module::GetLinkageFuncName(std::string& func_name, std::uint8_t* func_address) const
{
if (!Address::validAddress(func_address)) return false;
auto& it = GetGlobalIFuncs().find(func_address);
if (it != GetGlobalIFuncs().end() && it->second) {
func_name = it->second->GetFullName();
return true;
}
return false;
}
bool Module::AddFunction(std::string& func_name, std::uint8_t* func_address)
{
if (!Valid()) return false;
if (!func_address) return false;
Function::func_type type = Function::func_normal;
if (func_name.length() == 0) {
if (!GetLinkageFuncName(func_name, func_address)) {
std::stringstream stream;
stream << std::hex << reinterpret_cast<DWORD_PTR>(func_address);
func_name = FUNC_NORMAL_SUB + stream.str();
}
else {
type = Function::func_linkage;
}
}
PVOID address = reinterpret_cast<PVOID>(func_address);
auto& it = m_function_list.find(address);
if (it == m_function_list.end()) {
if (func_address == m_module_context->GetOEP()) {
type = Function::func_oep;
}
std::shared_ptr<Function> func_ptr = std::make_shared<Function>(shared_from_this(), func_name, func_address, type);
if (!func_ptr) return false;
m_function_list[address] = std::move(func_ptr);
return true;
}
return false;
}
bool Module::AddGlobalIFunc(std::unique_ptr<GlobalIFunc::func_struc> func_st)
{
if (!func_st) return false;
if (func_st->address == 0 || !func_st->file_name.length() || !func_st->func_name.length())
return false;
PVOID address = reinterpret_cast<PVOID>(func_st->to_address);
auto& it = m_globalifunc_list.find(address);
if (it == m_globalifunc_list.end()) {
m_globalifunc_list[address] = std::make_shared<GlobalIFunc>(shared_from_this(), std::move(func_st));
return true;
}
return false;
}
void Module::ReportObject::CreateReport(std::shared_ptr<CBaseStruc> object, std::string& desc)
{
if (!object) return;
if (!desc.length()) return;
report_object obj = { object->GetBaseType(), object->GetBaseAddress(), object };
auto find = m_report_list.find(obj);
if (find == m_report_list.end()) {
m_report_list.emplace(obj, desc);
}
return;
}
void Module::ReportObject::dump(RapidValue& json_object, rapidjson::MemoryPoolAllocator<>& allocator, Cfg_view_flags flags) const
{
RapidValue report_value;
report_value.SetObject();
report_value.AddMember("reports", m_report_list.size(), allocator);
int count = 0;
for (auto& report : m_report_list) {
if (!report.first.object.lock() || !report.second.length())
continue;
GenerateJsonReport(count, report.first.object.lock(), report.second, report_value, allocator, flags);
}
json_object.AddMember("ErrorReport", report_value, allocator);
return;
}
void Module::ReportObject::GenerateJsonReport(int count, std::shared_ptr<CBaseStruc> object, std::string desc, RapidValue& json_object, rapidjson::MemoryPoolAllocator<>& allocator, Cfg_view_flags flags) const
{
if (!object) return;
RapidValue report_value;
report_value.SetObject();
switch (object->GetBaseType())
{
case base_module:
{
std::shared_ptr<Module> cur_module = std::static_pointer_cast<Module>(object);
std::stringstream ss;
ss << "0x" << std::hex << reinterpret_cast<unsigned long long>(cur_module->GetContext()->GetBaseAddress());
report_value.AddMember("object_type", "module", allocator);
report_value.AddMember("name", RapidValue(cur_module->GetModuleName().c_str(), allocator), allocator);
report_value.AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
report_value.AddMember("description", RapidValue(desc.c_str(), allocator), allocator);
}
break;
case base_function:
{
std::shared_ptr<Function> function = std::static_pointer_cast<Function>(object);
std::stringstream ss;
ss << "0x" << std::hex << function->GetFuncAddress();
report_value.AddMember("object_type", "function", allocator);
report_value.AddMember("name", RapidValue(function->GetFuncName().c_str(), allocator), allocator);
report_value.AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
report_value.AddMember("description", RapidValue(desc.c_str(), allocator), allocator);
}
break;
case base_globalifunc:
{
std::shared_ptr<GlobalIFunc> ifunc = std::static_pointer_cast<GlobalIFunc>(object);
report_value.AddMember("object_type", "globalifunc", allocator);
report_value.AddMember("name", RapidValue(ifunc->GetFullName().c_str(), allocator), allocator);
report_value.AddMember("description", RapidValue(desc.c_str(), allocator), allocator);
}
break;
case base_basicblock:
{
std::shared_ptr<BasicBlock> block = std::static_pointer_cast<BasicBlock>(object);
std::stringstream ss;
ss << "0x" << std::hex << reinterpret_cast<unsigned long long>(block->getAddress());
report_value.AddMember("object_type", "BasicBlock", allocator);
report_value.AddMember("name", RapidValue(block->GetName().c_str(), allocator), allocator);
report_value.AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
report_value.AddMember("description", RapidValue(desc.c_str(), allocator), allocator);
}
break;
case base_globalvariable:
{
return;
}
break;
case base_instruction:
{
std::shared_ptr<CapInsn> insn = std::static_pointer_cast<CapInsn>(object);
std::stringstream ss;
ss << "0x" << std::hex << insn->address();
report_value.AddMember("object_type", "BasicBlock", allocator);
report_value.AddMember("object_type", "Instruction", allocator);
report_value.AddMember("name", RapidValue(insn->dump().c_str(), allocator), allocator);
report_value.AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
report_value.AddMember("description", RapidValue(desc.c_str(), allocator), allocator);
}
break;
default:
return;
}
std::stringstream ss;
ss << "report-" << count;
json_object.AddMember(RapidValue(ss.str().c_str(), allocator), report_value, allocator);
}
void Module::ModuleContext::InitializePeStructure(std::unique_ptr<PeLib::PeFile> pe_file)
{
ASSERT(pe_file);
//tls_check_struct *tls = check_get_tls();
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readMzHeader();
// pe_file->readPeHeader();
// pe_file->readImportDirectory();
// pe_file->readExportDirectory();
// pe_file->readIatDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// pe_file = nullptr;
// module_format = FileDetector::format_unknown;
// return;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readBoundImportDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readDelayImportDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readCoffSymbolTable();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readDebugDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readTlsDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readResourceDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readSecurityDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
//if (tls) {
// tls->active = 1;
// if (setjmp(tls->jb) == 0) {
// pe_file->readComHeaderDirectory();
// tls->active = 0;
// }
// else {
// //execption occur
// tls->active = 0;
// }
//}
pe_format = std::make_unique<PeFormat>(std::move(pe_file));
return;
}
std::unique_ptr<PeLib::PeFile> Module::ModuleContext::GetPeFile(const std::string& path)
{
PeLib::PeFile32 pefile(path);
if (pefile.readMzHeader() != PeLib::ERROR_NONE) {
return nullptr;
}
if (!pefile.mzHeader().isValid()) {
return nullptr;
}
if (pefile.readPeHeader() != PeLib::ERROR_NONE) {
return nullptr;
}
if (!pefile.peHeader().isValid()) {
return nullptr;
}
WORD machine = pefile.peHeader().getMachine();
WORD magic = pefile.peHeader().getMagic();
if ((machine == PeLib::PELIB_IMAGE_FILE_MACHINE_AMD64
|| machine == PeLib::PELIB_IMAGE_FILE_MACHINE_IA64)
&& magic == PeLib::PELIB_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
return std::make_unique<PeLib::PeFile64>(path);
}
return std::make_unique<PeLib::PeFile32>(path);
}
std::shared_ptr<CBaseStruc> Module::GetBaseObjectAtAddress(std::uint8_t* address) const
{
auto func = m_function_list.find(address);
if (func != m_function_list.end())
return func->second;
auto ifunc = m_globalifunc_list.find(address);
if (ifunc != m_globalifunc_list.end())
return ifunc->second;
auto variable = m_globalvariable_list.find(address);
if (variable != m_globalvariable_list.end())
return variable->second;
return nullptr;
}
void Module::dump(const std::string& output_file, Cfg_view_flags flags) const
{
if (!Valid()) return;
std::ofstream jsonFile(output_file, std::ofstream::trunc);
if (!jsonFile) return;
auto tt = std::chrono::system_clock::to_time_t
(std::chrono::system_clock::now());
struct tm* ptm = localtime(&tt);
char date[60] = { 0 };
sprintf(date, "%d-%02d-%02d-%02d.%02d.%02d",
(int)ptm->tm_year + 1900, (int)ptm->tm_mon + 1, (int)ptm->tm_mday,
(int)ptm->tm_hour, (int)ptm->tm_min, (int)ptm->tm_sec);
RapidDocument document;
auto& allocator = document.GetAllocator();
std::string time_str = date;
document.SetObject();
document.AddMember("time", RapidValue(time_str.c_str(), allocator), allocator);
RapidValue module_value;
module_value.SetObject();
std::string module_name = GetModuleName();
if (!module_name.length()) module_name = "unknown_module";
std::stringstream ss;
ss << "0x" << std::hex << GetBaseAddress();
module_value.AddMember("module_name", RapidValue(module_name.c_str(), allocator), allocator);
module_value.AddMember("architecture", RapidValue(GetArchitecture().c_str(), allocator), allocator);
module_value.AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
module_value.AddMember("functions", size(), allocator);
for (auto& func : m_function_list) {
if (func.first && func.second) {
func.second->dump(module_value, allocator, flags);
}
}
m_report_object.dump(module_value, allocator);
document.AddMember("module", module_value, allocator);
rapidjson::StringBuffer buf;
rapidjson::PrettyWriter<rapidjson::StringBuffer> writer(buf);
document.Accept(writer);
jsonFile << buf.GetString();
return;
}
void Module::dump(const std::unique_ptr<cchips::CRapidJsonWrapper>& document, Cfg_view_flags flags) const
{
if (!Valid()) return;
if (!document) return;
std::unique_ptr<RapidValue> module_value = std::make_unique<RapidValue>();
if (!module_value) return;
module_value->SetObject();
auto& allocator = document->GetAllocator();
std::string module_name = GetModuleName();
if (!module_name.length()) module_name = "unknown_module";
std::stringstream ss;
ss << "0x" << std::hex << GetBaseAddress();
module_value->AddMember("module_name", RapidValue(module_name.c_str(), allocator), allocator);
module_value->AddMember("architecture", RapidValue(GetArchitecture().c_str(), allocator), allocator);
module_value->AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
module_value->AddMember("functions", size(), allocator);
for (auto& func : m_function_list) {
if (func.first && func.second) {
func.second->dump(*module_value, allocator, flags);
}
}
m_report_object.dump(*module_value, allocator);
document->CopyRapidValue(std::move(module_value));
return;
}
bool Function::Initialize()
{
if (!m_parent.lock()) return false;
if (!m_func_name.length()) return false;
if (!m_func_address) return false;
if (m_func_type > func_normal) return false;
m_basicblocks.clear();
if (m_func_type == func_linkage) return true;
JumpTargets jump_targets;
jump_targets.push(m_func_address, JumpTarget::jmp_type::JMP_ENTRY_POINT, JumpTarget::from_type(0, JumpTarget::jmp_type::JMP_UNKNOWN));
return Decode(jump_targets);
}
void Function::dump(RapidValue& json_object, rapidjson::MemoryPoolAllocator<>& allocator, Cfg_view_flags flags) const
{
RapidValue func_value;
func_value.SetObject();
func_value.AddMember("func_name", RapidValue(GetFuncName().c_str(), allocator), allocator);
std::stringstream ss;
ss << "0x" << std::hex << GetFuncAddress();
func_value.AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
func_value.AddMember("func_type", RapidValue(GetFuncType().c_str(), allocator), allocator);
func_value.AddMember("basicblocks", getCurrentBlockNo(), allocator);
for (auto& basicblock : m_basicblocks) {
if (basicblock.first && basicblock.second) {
basicblock.second->dump(func_value, allocator, flags);
}
}
json_object.AddMember("Function", func_value, allocator);
return;
}
std::shared_ptr<BasicBlock> Function::getBasicBlockAtAddress(std::uint8_t* address)
{
if (!address) return {};
for (auto& block : m_basicblocks) {
if (!block.second) continue;
if (block.second->getAddress() <= address && block.second->getEndAddress() > address)
return block.second;
}
return {};
}
size_t Function::GetPredictSize(const JumpTargets& jump_targets, std::uint8_t* address) {
size_t predict_size = 0;
std::shared_ptr<Module> parent = m_parent.lock();
if (!parent) return predict_size;
std::shared_ptr<PeCoffSection> section = parent->GetContext()->GetPeFormat()->getPeSection(address);
if (section) {
predict_size = section->getPredictAddress(address) - reinterpret_cast<unsigned long long>(address);
}
std::shared_ptr<BasicBlock> after_block = getBasicBlockAfter(address);
if (after_block) {
std::uint8_t* after_addr = after_block->getAddress();
if (predict_size > after_addr - address)
predict_size = after_addr - address;
}
if (std::uint8_t* after_addr = jump_targets.getAddressAfter(address)) {
if (predict_size > after_addr - address)
predict_size = after_addr - address;
}
return predict_size;
}
std::shared_ptr<BasicBlock> Function::getBasicBlockAfter(std::uint8_t* address)
{
std::shared_ptr<BasicBlock> result;
for (auto& block : m_basicblocks) {
if (!block.second) continue;
if (block.second->getAddress() > address) {
if (!result) result = block.second;
if (result && block.second->getAddress() < result->getAddress()) {
result = block.second;
}
}
}
return result;
}
bool Function::getJumpTarget(JumpTargets& jump_targets, JumpTarget& jt)
{
if (!jump_targets.empty())
{
jt = jump_targets.top();
jump_targets.pop();
return true;
}
return false;
}
std::shared_ptr<BasicBlock> Function::CreateBasicBlock(const JumpTarget& jt)
{
std::shared_ptr<BasicBlock> basic_block = nullptr;
switch (jt.getType()) {
case JumpTarget::jmp_type::JMP_UNKNOWN:
return {};
case JumpTarget::jmp_type::JMP_ENTRY_POINT:
{
basic_block = std::make_shared<BasicBlock>(shared_from_this(), std::string(FIRST_BLOCK_NAME), jt.getToAddress(), 0, BasicBlock::block_start);
}
break;
default:
{
std::stringstream ss;
ss << BLOCK_NORMAL_LOC << std::hex << reinterpret_cast<DWORD_PTR>(jt.getToAddress());
basic_block = std::make_shared<BasicBlock>(shared_from_this(), ss.str(), jt.getToAddress(), getCurrentBlockNo(), BasicBlock::block_unknown);
}
}
if (!basic_block) return {};
if (!basic_block->Valid()) return {};
auto& exsit_block = m_basicblocks.find(jt.getToAddress());
if (exsit_block == m_basicblocks.end()) {
m_basicblocks[jt.getToAddress()] = basic_block;
}
return basic_block;
}
bool Function::splitBasicBlockAtAddress(const JumpTarget& jt)
{
std::uint8_t* start = jt.getToAddress();
if (!Address::validAddress(start))
return false;
std::shared_ptr<BasicBlock> basic_block = getBasicBlockAtAddress(start);
if (basic_block) {
if (basic_block->getAddress() == start)
return true;
std::shared_ptr<BasicBlock> new_block = basic_block->splitBasicBlockAtAddress(start);
if (new_block) return true;
}
return false;
}
void Function::linktoFromBasicBlock(std::shared_ptr<BasicBlock> cur_block, const JumpTarget& jt)
{
for (auto& from : jt) {
if (!Address::validAddress(from.first))
return;
std::shared_ptr<BasicBlock> pre_block = getBasicBlockAtAddress(from.first);
if (!pre_block) return;
if (!linkBasicBlock(pre_block, cur_block, from.second))
return;
}
return;
}
void Function::processJmpInstruction(std::shared_ptr<BasicBlock> cur_block, std::unique_ptr<CapInsn> cap_insn, std::uint8_t* insn_code, JumpTargets& jump_targets)
{
std::uint8_t* next_addr = nullptr;
std::uint8_t* jmp_addr = nullptr;
std::shared_ptr<Module> parent = m_parent.lock();
if (!parent) return;
std::shared_ptr<PeCoffSection> section = parent->GetContext()->GetPeFormat()->getPeSection(cur_block->getAddress());
if (!section) return;
Range<std::uint8_t*> section_range;
section_range.setStartEnd(reinterpret_cast<std::uint8_t*>(section->getAddress()), reinterpret_cast<std::uint8_t*>(section->getEndAddress()));
Range<std::uint8_t*> image_range;
image_range.setStartEnd(const_cast<std::uint8_t*>(parent->GetContext()->GetBaseAddress()), const_cast<std::uint8_t*>(parent->GetContext()->GetEndAddress()));
if (x86_op_type op_type; GetCapstoneImplment().GetJmpAddress(*cap_insn, next_addr, jmp_addr, op_type)) {
if (section_range.contains(next_addr)) {
if (!getBasicBlockAtAddress(next_addr)) {
jump_targets.push(next_addr, JumpTarget::jmp_type::JMP_NORMAL, JumpTarget::from_type(insn_code, JumpTarget::jmp_type::JMP_CONTROL_FLOW_BR_FALSE));
}
}
else {
// Cross section? feature.
}
if (image_range.contains(jmp_addr)) {
if (op_type == X86_OP_MEM) {
tls_check_struct *tls = check_get_tls();
if (tls) {
tls->active = 1;
if (setjmp(tls->jb) == 0) {
jmp_addr = *reinterpret_cast<std::uint8_t**>(jmp_addr);
tls->active = 0;
}
else {
//execption occur
tls->active = 0;
}
}
}
std::shared_ptr<BasicBlock> jmp_block = getBasicBlockAtAddress(jmp_addr);
if (jmp_block) {
JumpTarget target(jmp_addr, JumpTarget::jmp_type::JMP_NORMAL, JumpTarget::from_type(insn_code, JumpTarget::jmp_type::JMP_CONTROL_FLOW_BR_TRUE));
splitBasicBlockAtAddress(target);
if (jmp_block->getAddress() == cur_block->getAddress()) {
std::shared_ptr<BasicBlock> new_block = getBasicBlockAtAddress(jmp_addr);
if (new_block) {
new_block->AddCapInsn(std::move(std::shared_ptr<CapInsn>(cap_insn.release())));
return;
}
}
}
else if (std::shared_ptr<CBaseStruc> jmpto_base; jmpto_base = parent->GetBaseObjectAtAddress(jmp_addr)) {
}
else {
if (image_range.contains(jmp_addr)) {
jump_targets.push(jmp_addr, JumpTarget::jmp_type::JMP_NORMAL, JumpTarget::from_type(insn_code, JumpTarget::jmp_type::JMP_CONTROL_FLOW_BR_TRUE));
}
}
}
cur_block->AddCapInsn(std::move(std::shared_ptr<CapInsn>(cap_insn.release())));
}
return;
}
void Function::processLoopInstruction(std::shared_ptr<BasicBlock> cur_block, std::unique_ptr<CapInsn> cap_insn, std::uint8_t* insn_code, JumpTargets& jump_targets)
{
std::uint8_t* next_addr = nullptr;
std::uint8_t* loop_addr = nullptr;
std::shared_ptr<Module> parent = m_parent.lock();
if (!parent) return;
std::shared_ptr<PeCoffSection> section = parent->GetContext()->GetPeFormat()->getPeSection(cur_block->getAddress());
if (!section) return;
Range<std::uint8_t*> section_range;
section_range.setStartEnd(reinterpret_cast<std::uint8_t*>(section->getAddress()), reinterpret_cast<std::uint8_t*>(section->getEndAddress()));
if (x86_op_type op_type; GetCapstoneImplment().GetLoopAddress(*cap_insn, next_addr, loop_addr, op_type)) {
if (section_range.contains(next_addr)) {
if (!getBasicBlockAtAddress(next_addr)) {
jump_targets.push(next_addr, JumpTarget::jmp_type::JMP_NORMAL, JumpTarget::from_type(insn_code, JumpTarget::jmp_type::JMP_CONTROL_FLOW_BR_FALSE));
}
}
else {
// Cross section? feature.
}
if (section_range.contains(loop_addr)) {
if (op_type == X86_OP_MEM) {
}
std::shared_ptr<BasicBlock> loop_block = getBasicBlockAtAddress(loop_addr);
if (loop_block) {
JumpTarget target(loop_addr, JumpTarget::jmp_type::JMP_NORMAL, JumpTarget::from_type(insn_code, JumpTarget::jmp_type::JMP_CONTROL_FLOW_BR_TRUE));
splitBasicBlockAtAddress(target);
if (loop_block->getAddress() == cur_block->getAddress()) {
std::shared_ptr<BasicBlock> new_block = getBasicBlockAtAddress(loop_addr);
if (new_block) {
new_block->AddCapInsn(std::move(std::shared_ptr<CapInsn>(cap_insn.release())));
return;
}
}
}
else {
jump_targets.push(loop_addr, JumpTarget::jmp_type::JMP_NORMAL, JumpTarget::from_type(insn_code, JumpTarget::jmp_type::JMP_CONTROL_FLOW_BR_TRUE));
}
}
else {
// Cross section? feature.
}
cur_block->AddCapInsn(std::move(std::shared_ptr<CapInsn>(cap_insn.release())));
}
return;
}
void Function::decodeJumpTarget(JumpTargets& jump_targets, const JumpTarget& jt)
{
std::uint8_t* start = jt.getToAddress();
if (!Address::validAddress(start))
return;
std::shared_ptr<Module> parent = m_parent.lock();
if (!parent)
return;
size_t predict_size = GetPredictSize(jump_targets, start);
if (!predict_size)
return;
std::shared_ptr<BasicBlock> current_block = CreateBasicBlock(jt);
if (!current_block)
return;
//linktoFromBasicBlock(current_block, jt);
std::uint8_t* insn_code = start;
while (std::unique_ptr<CapInsn> cap_insn = cchips::GetCapstoneImplment().DisasmOneInsn(insn_code, predict_size)) {
size_t code_size = cap_insn->size();
if (GetCapstoneImplment().InJmpGroup(*cap_insn)) {
processJmpInstruction(current_block, std::move(cap_insn), insn_code, jump_targets);
break;
}
else if (cchips::GetCapstoneImplment().InRetGroup(*cap_insn)) {
current_block->AddCapInsn(std::move(std::shared_ptr<CapInsn>(cap_insn.release())));
break;
}
else if (cchips::GetCapstoneImplment().InLoopGroup(*cap_insn)) {
processLoopInstruction(current_block, std::move(cap_insn), insn_code, jump_targets);
break;
}
else {
current_block->AddCapInsn(std::move(std::shared_ptr<CapInsn>(cap_insn.release())));
}
if (predict_size <= code_size) {
break;
}
insn_code += code_size;
predict_size -= code_size;
}
}
bool Function::Decode(JumpTargets& jump_targets)
{
if (!jump_targets.size()) return false;
JumpTarget jt;
while (getJumpTarget(jump_targets, jt))
{
decodeJumpTarget(jump_targets, jt);
}
return true;
}
std::shared_ptr<BasicBlock> BasicBlock::splitBasicBlockAtAddress(std::uint8_t* address)
{
if (!contains(address)) return {};
if (address == getAddress()) return {};
int insn_no = 0;
std::shared_ptr<Function> parent = m_parent.lock();
if (!parent) return {};
std::uint8_t* pre_insn_addr = 0;
std::uint8_t* cur_insn_addr = getAddress();
std::shared_ptr<BasicBlock> split_block = nullptr;
for (auto& insn : m_capinsns) {
if (!insn) return false;
if (split_block) {
split_block->AddCapInsn(insn);
}
else {
if (cur_insn_addr == address) {
JumpTarget jt(address, JumpTarget::jmp_type::JMP_NORMAL, JumpTarget::from_type(pre_insn_addr, JumpTarget::jmp_type::JMP_CONTROL_FLOW_BR_FALSE));
split_block = parent->CreateBasicBlock(jt);
if (!split_block) return {};
if (!split_block->Valid()) return {};
split_block->AddCapInsn(insn);
continue;
}
insn_no++;
pre_insn_addr = cur_insn_addr;
cur_insn_addr += insn->size();
}
}
if (!split_block) return {};
m_capinsns.erase(begin() + insn_no, end());
m_size -= split_block->getBlockSize();
return split_block;
}
bool BasicBlock::AddCapInsn(std::shared_ptr<CapInsn> cap_insn)
{
if (!cap_insn) return false;
if (!cap_insn->valid()) return false;
GetParent()->GetParent()->IncInsnCounts();
m_size += cap_insn->size();
cap_insn->SetParent(shared_from_this());
m_capinsns.emplace_back(cap_insn);
return true;
}
void BasicBlock::dump(RapidValue& json_object, rapidjson::MemoryPoolAllocator<>& allocator, Cfg_view_flags flags) const
{
RapidValue block_value;
block_value.SetObject();
block_value.AddMember("block_name", RapidValue(GetName().c_str(), allocator), allocator);
std::stringstream ss;
ss << "0x" << std::hex << reinterpret_cast<unsigned long long>(getAddress());
block_value.AddMember("address", RapidValue(ss.str().c_str(), allocator), allocator);
block_value.AddMember("block_type", RapidValue(getBlockType().c_str(), allocator), allocator);
block_value.AddMember("block_no", getBlockNo(), allocator);
RapidValue insns_value;
insns_value.SetObject();
for (auto& insn : m_capinsns) {
if (insn) {
insn->dump(insns_value, allocator, flags);
}
}
block_value.AddMember("insns", insns_value, allocator);
ss.clear(); ss.str("");
ss << "block-" << getBlockNo();
json_object.AddMember(RapidValue(ss.str().c_str(), allocator), block_value, allocator);
return;
}
bool BasicBlock::isAfterBlock(std::shared_ptr<BasicBlock> block, std::shared_ptr<const BasicBlock> first) const
{
bool bret = false;
if (shared_from_this() == block)
return true;
if (shared_from_this() == first) {
return false;
}
if (!first) {
first = shared_from_this();
}
if (GetNextBlock() != nullptr) {
bret = GetNextBlock()->isAfterBlock(block, shared_from_this());
if (bret) return true;
}
if (GetBranchBlock() != nullptr) {
bret = GetBranchBlock()->isAfterBlock(block, shared_from_this());
if (bret) return true;
}
return false;
}
Variable::Variable(std::shared_ptr<CBaseStruc> parent, std::string& name, std::uint8_t* address, variable_type type, std::uint8_t bytes, base_type btype)
: m_parent(parent),
CBaseStruc(btype),
m_address(address),
m_type(type)
{
switch (bytes) {
case 0:
break;
case 1:
{
std::shared_ptr<CMetadataTypeObject> byte_ptr = make_metadata_j_ptr<BYTE>(CBaseDef::type_byte, INVALID_VARIABLE_VALUE, CObObject::op_n_equal);
if (!byte_ptr) return;
std::shared_ptr<CMetadataTypeObject> varint_ptr = std::make_shared<CMetadataTypeObject>(name, byte_ptr);
if (!varint_ptr) return;
m_data = std::move(varint_ptr);
}
break;
case 2:
{
std::shared_ptr<CMetadataTypeObject> word_ptr = make_metadata_j_ptr<BYTE>(CBaseDef::type_word, INVALID_VARIABLE_VALUE, CObObject::op_n_equal);
if (!word_ptr) return;
std::shared_ptr<CMetadataTypeObject> varint_ptr = std::make_shared<CMetadataTypeObject>(name, word_ptr);
if (!varint_ptr) return;
m_data = std::move(varint_ptr);
}
break;
case 4:
{
std::shared_ptr<CMetadataTypeObject> dword_ptr = make_metadata_j_ptr<BYTE>(CBaseDef::type_dword, INVALID_VARIABLE_VALUE, CObObject::op_n_equal);
if (!dword_ptr) return;
std::shared_ptr<CMetadataTypeObject> varint_ptr = std::make_shared<CMetadataTypeObject>(name, dword_ptr);
if (!varint_ptr) return;
m_data = std::move(varint_ptr);
}
break;
case 8:
{
std::shared_ptr<CMetadataTypeObject> ulonglong_ptr = make_metadata_j_ptr<BYTE>(CBaseDef::type_ulonglong, INVALID_VARIABLE_VALUE, CObObject::op_n_equal);
if (!ulonglong_ptr) return;
std::shared_ptr<CMetadataTypeObject> varint_ptr = std::make_shared<CMetadataTypeObject>(name, ulonglong_ptr);
if (!varint_ptr) return;
m_data = std::move(varint_ptr);
}
break;
default:
{
std::shared_ptr<CMetadataTypeObject> byte_ptr = make_metadata_j_ptr<BYTE>(CBaseDef::type_byte, INVALID_VARIABLE_VALUE, CObObject::op_n_equal);
if (!byte_ptr) return;
std::shared_ptr<CArrayObject> array_ptr = std::make_shared<CArrayObject>(name);
if (!array_ptr) return;
array_ptr->AddArray(byte_ptr, bytes);
m_data = std::move(array_ptr);
}
}
return;
}
std::string SimpleLoop::getInvariantName() const
{
if (m_invariant.index() == 0) {
return GetCapstoneImplment().GetRegName(std::get<x86_reg>(m_invariant));
}
else if(m_invariant.index() == 1) {
auto[address, size] = std::get<std::pair<std::uint64_t, size_t>>(m_invariant);
std::stringstream ss;
ss << "invar-0x" << std::hex << address << "-" << std::dec << size << std::endl;
return ss.str();
}
return "unknown-invar";
}
std::uint64_t SimpleLoop::getInvariant(std::shared_ptr<Debugger::Modifier> ep) const