mingw崩溃日志分析。
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176
dumpDemo/crashdump.cpp
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176
dumpDemo/crashdump.cpp
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#include "crashdump.h"
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#include <iomanip>
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#include <sstream>
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CrashDump::CrashDump(EXCEPTION_POINTERS* exp) : exp_(exp)
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{
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}
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std::string CrashDump::GetModuleByReAddr(PBYTE retAddr, PBYTE& moduleAddr)
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{
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MODULEENTRY32 M = {sizeof(M)};
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HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, 0);
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char moduleName[MAX_PATH]{};
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if (hSnapshot != INVALID_HANDLE_VALUE && Module32First(hSnapshot, &M)) {
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do {
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if (DWORD(retAddr - M.modBaseAddr) < M.modBaseSize) {
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std::snprintf(moduleName, MAX_PATH, "%s", M.szExePath);
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moduleAddr = M.modBaseAddr;
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break;
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}
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} while (Module32Next(hSnapshot, &M));
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}
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std::string name(moduleName);
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return name;
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}
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std::string CrashDump::GetVersion()
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{
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OSVERSIONINFO V = {sizeof(OSVERSIONINFO)};
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if (!GetVersionEx((POSVERSIONINFO)&V)) {
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ZeroMemory(&V, sizeof(V));
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V.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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GetVersionEx((POSVERSIONINFO)&V);
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}
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if (V.dwPlatformId != VER_PLATFORM_WIN32_NT) {
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V.dwBuildNumber = LOWORD(V.dwBuildNumber);
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}
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char buffer[512]{};
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std::snprintf(buffer, sizeof(buffer), "Windows: %ld.%ld.%ld, %s.", V.dwMajorVersion, V.dwMinorVersion, V.dwBuildNumber,
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V.szCSDVersion);
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std::string info(buffer);
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return info;
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}
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std::string CrashDump::GetExceptionInfo()
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{
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char moduleName[MAX_PATH]{};
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PBYTE moduleAddr{};
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GetModuleFileName(NULL, moduleName, MAX_PATH);
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if (exp_ == nullptr) {
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return "Not Set Exception Pointer.";
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}
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std::ostringstream oss;
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auto& E = exp_->ExceptionRecord;
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auto& C = exp_->ContextRecord;
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oss << "ExceptionAddr: " << E->ExceptionAddress << "\n";
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oss << "ExceptionCode: " << E->ExceptionCode << "\n";
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if (E->ExceptionCode == EXCEPTION_ACCESS_VIOLATION) {
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oss << (E->ExceptionInformation[0] ? "Write " : "Read ");
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oss << E->ExceptionInformation[1] << "\n";
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}
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oss << "Instruction:";
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for (int i = 0; i < 16; i++) {
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oss << " " << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(PBYTE(E->ExceptionAddress)[i]);
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}
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oss << std::hex << std::setfill('0');
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// 1. 基本寄存器组
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oss << "\nGeneral Purpose Registers:"
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<< "\nRAX: " << std::setw(16) << C->Rax << " RBX: " << std::setw(16) << C->Rbx << " RCX: " << std::setw(16) << C->Rcx
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<< " RDX: " << std::setw(16) << C->Rdx
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<< "\nRSI: " << std::setw(16) << C->Rsi << " RDI: " << std::setw(16) << C->Rdi << " RBP: " << std::setw(16) << C->Rbp
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<< " RSP: " << std::setw(16) << C->Rsp
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<< "\nR8: " << std::setw(16) << C->R8 << " R9: " << std::setw(16) << C->R9 << " R10: " << std::setw(16) << C->R10
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<< " R11: " << std::setw(16) << C->R11
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<< "\nR12: " << std::setw(16) << C->R12 << " R13: " << std::setw(16) << C->R13 << " R14: " << std::setw(16) << C->R14
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<< " R15: " << std::setw(16) << C->R15;
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// 2. 关键控制寄存器
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oss << "\n\nControl Registers:"
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<< "\nRIP: " << std::setw(16) << C->Rip << " EFLAGS: " << std::setw(8) << C->EFlags << " CS: " << std::setw(4)
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<< C->SegCs << " SS: " << std::setw(4) << C->SegSs;
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// 3. 调试寄存器（如果有用）
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if (C->ContextFlags & CONTEXT_DEBUG_REGISTERS) {
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oss << "\n\nDebug Registers:"
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<< "\nDR0: " << std::setw(16) << C->Dr0 << " DR1: " << std::setw(16) << C->Dr1 << " DR2: " << std::setw(16)
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<< C->Dr2 << " DR3: " << std::setw(16) << C->Dr3 << "\nDR6: " << std::setw(16) << C->Dr6
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<< " DR7: " << std::setw(16) << C->Dr7;
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}
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// 4. MXCSR状态（浮点/SSE）
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if (C->ContextFlags & CONTEXT_FLOATING_POINT) {
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oss << "\n\nFPU/SSE State:"
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<< "\nMXCSR: " << std::setw(8) << C->MxCsr;
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}
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// 5. 最后分支记录（如果可用）
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if (C->LastBranchToRip || C->LastBranchFromRip) {
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oss << "\n\nLast Branch:"
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<< "\nFrom: " << std::setw(16) << C->LastBranchFromRip << " To: " << std::setw(16) << C->LastBranchToRip;
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}
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oss << GetCallStack(exp_) << "\n";
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return oss.str();
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}
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std::string CrashDump::GetCallStack(EXCEPTION_POINTERS* exp)
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{
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struct StackFrame {
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StackFrame* prev_frame;
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void* return_address;
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};
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std::ostringstream oss;
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StackFrame* current_frame = nullptr;
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// 1. 初始化栈帧指针
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if (exp) {
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// 异常情况：从异常上下文中获取栈帧
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#if defined(_M_X64) || defined(__x86_64__)
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current_frame = reinterpret_cast<StackFrame*>(exp->ContextRecord->Rbp);
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#else
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current_frame = reinterpret_cast<StackFrame*>(exp->ContextRecord->Ebp);
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#endif
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} else {
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// 非异常情况：手动获取当前栈帧（编译器相关）
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#if defined(__GNUC__) || defined(__clang__)
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// GCC/Clang 内联汇编获取 EBP/RBP
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#if defined(__x86_64__)
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register void* frame_ptr asm("rbp");
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#else
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register void* frame_ptr asm("ebp");
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#endif
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current_frame = reinterpret_cast<StackFrame*>(frame_ptr);
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#elif defined(_MSC_VER)
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// MSVC 内置函数（如果可用）
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current_frame = reinterpret_cast<StackFrame*>(_AddressOfReturnAddress() - sizeof(void*));
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#else
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return "Stack walking not supported on this compiler";
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#endif
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}
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// 2. 遍历调用栈
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constexpr size_t max_frames = 64;
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PBYTE module_addr = nullptr;
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for (size_t i = 0; i < max_frames && current_frame; ++i) {
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// 安全检查
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if (IsBadReadPtr(current_frame, sizeof(StackFrame)) ||
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IsBadCodePtr(reinterpret_cast<FARPROC>(current_frame->return_address))) {
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break;
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}
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// 格式化输出
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oss << "\n0x" << std::hex << std::setw(8) << std::setfill('0')
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<< reinterpret_cast<uintptr_t>(current_frame->return_address) << " ";
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// 获取模块信息
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std::string module_name = GetModuleByReAddr(reinterpret_cast<PBYTE>(current_frame->return_address), module_addr);
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if (!module_name.empty()) {
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DWORD rva = static_cast<DWORD>(reinterpret_cast<PBYTE>(current_frame->return_address) - module_addr);
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// 输出模块信息和RVA
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oss << " (RVA: 0x" << std::hex << std::setw(8) << std::setfill('0') << rva << ") " << module_name;
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}
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// 移动到上一栈帧
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current_frame = current_frame->prev_frame;
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}
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return oss.str();
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}
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