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https://github.com/WerWolv/ImHex.git
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17c2dfcbd0
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309 lines
10 KiB
C++
309 lines
10 KiB
C++
#include <iostream>
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#include <mutex>
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#include <hex/trace/stacktrace.hpp>
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#include <llvm/Demangle/Demangle.h>
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namespace hex::trace {
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std::string demangle(const std::string &symbolName) {
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if (auto result = llvm::demangle(symbolName); result != symbolName)
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return result;
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if (auto result = llvm::demangle(std::string("_") + symbolName); result != std::string("_") + symbolName)
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return result;
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if (auto result = llvm::demangle(std::string("_Z") + symbolName); result != std::string("_Z") + symbolName)
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return result;
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return symbolName;
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}
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}
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static std::mutex s_traceMutex;
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#if defined(HEX_HAS_STD_STACKTRACE) && __has_include(<stacktrace>)
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#include <stacktrace>
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#if __has_include(<dlfcn.h>)
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#include <filesystem>
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#include <dlfcn.h>
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#include <fmt/format.h>
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#endif
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namespace hex::trace {
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static std::string toUTF8String(const auto &value) {
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auto result = value.generic_u8string();
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return { result.begin(), result.end() };
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}
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void initialize() {
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}
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StackTraceResult getStackTrace() {
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std::lock_guard lock(s_traceMutex);
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StackTrace result;
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auto stackTrace = std::stacktrace::current();
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for (const auto &entry : stackTrace) {
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if (entry.source_line() == 0 && entry.source_file().empty()) {
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#if __has_include(<dlfcn.h>)
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Dl_info info = {};
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dladdr(reinterpret_cast<const void*>(entry.native_handle()), &info);
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std::string description;
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auto path = info.dli_fname != nullptr ? std::optional<std::filesystem::path>{info.dli_fname} : std::nullopt;
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auto filePath = path ? toUTF8String(*path) : "??";
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auto fileName = path ? toUTF8String(path->filename()) : "";
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if (info.dli_sname != nullptr) {
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description = demangle(info.dli_sname);
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if (info.dli_saddr != reinterpret_cast<const void*>(entry.native_handle())) {
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auto symOffset = entry.native_handle() - reinterpret_cast<uintptr_t>(info.dli_saddr);
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description += fmt::format("+0x{:x}", symOffset);
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}
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} else {
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auto rvaOffset = entry.native_handle() - reinterpret_cast<uintptr_t>(info.dli_fbase);
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description = fmt::format("{}+0x{:08x}", fileName, rvaOffset);
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}
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result.emplace_back(filePath, description, 0);
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#else
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result.emplace_back("", "??", 0);
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#endif
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} else {
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result.emplace_back(entry.source_file(), entry.description(), entry.source_line());
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}
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}
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return { result, "std::stacktrace" };
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}
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}
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#elif defined(OS_WINDOWS)
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#include <windows.h>
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#include <dbghelp.h>
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#include <array>
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namespace hex::trace {
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void initialize() {
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}
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StackTraceResult getStackTrace() {
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std::lock_guard lock(s_traceMutex);
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std::vector<StackFrame> stackTrace;
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HANDLE process = GetCurrentProcess();
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HANDLE thread = GetCurrentThread();
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CONTEXT context = {};
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context.ContextFlags = CONTEXT_FULL;
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RtlCaptureContext(&context);
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SymSetOptions(SYMOPT_CASE_INSENSITIVE | SYMOPT_UNDNAME | SYMOPT_LOAD_LINES | SYMOPT_LOAD_ANYTHING);
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SymInitialize(process, nullptr, TRUE);
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DWORD image;
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STACKFRAME64 stackFrame;
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ZeroMemory(&stackFrame, sizeof(STACKFRAME64));
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#if defined(_X86_)
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image = IMAGE_FILE_MACHINE_I386;
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stackFrame.AddrPC.Offset = context.Eip;
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stackFrame.AddrPC.Mode = AddrModeFlat;
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stackFrame.AddrFrame.Offset = context.Esp;
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stackFrame.AddrFrame.Mode = AddrModeFlat;
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stackFrame.AddrStack.Offset = context.Esp;
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stackFrame.AddrStack.Mode = AddrModeFlat;
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#elif defined(_ARM64_)
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image = IMAGE_FILE_MACHINE_ARM64;
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stackFrame.AddrPC.Offset = context.Pc;
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stackFrame.AddrPC.Mode = AddrModeFlat;
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stackFrame.AddrFrame.Offset = context.Sp;
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stackFrame.AddrFrame.Mode = AddrModeFlat;
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stackFrame.AddrStack.Offset = context.Sp;
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stackFrame.AddrStack.Mode = AddrModeFlat;
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#elif defined(_AMD64_)
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image = IMAGE_FILE_MACHINE_AMD64;
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stackFrame.AddrPC.Offset = context.Rip;
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stackFrame.AddrPC.Mode = AddrModeFlat;
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stackFrame.AddrFrame.Offset = context.Rsp;
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stackFrame.AddrFrame.Mode = AddrModeFlat;
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stackFrame.AddrStack.Offset = context.Rsp;
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stackFrame.AddrStack.Mode = AddrModeFlat;
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#else
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#warning "Unsupported architecture! Add support for your architecture here."
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return {};
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#endif
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while (true) {
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if (StackWalk64(
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image, process, thread,
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&stackFrame, &context, nullptr,
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SymFunctionTableAccess64, SymGetModuleBase64, nullptr) == FALSE)
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break;
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if (stackFrame.AddrReturn.Offset == stackFrame.AddrPC.Offset)
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break;
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std::array<char, sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR)> buffer = {};
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auto symbol = reinterpret_cast<PSYMBOL_INFO>(buffer.data());
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symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
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symbol->MaxNameLen = MAX_SYM_NAME;
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DWORD64 displacementSymbol = 0;
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const char *symbolName;
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if (SymFromAddr(process, stackFrame.AddrPC.Offset, &displacementSymbol, symbol) == TRUE) {
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symbolName = symbol->Name;
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} else {
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symbolName = "??";
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}
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SymSetOptions(SYMOPT_LOAD_LINES);
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IMAGEHLP_LINE64 line;
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line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
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DWORD displacementLine = 0;
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std::uint32_t lineNumber = 0;
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const char *fileName;
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if (SymGetLineFromAddr64(process, stackFrame.AddrPC.Offset, &displacementLine, &line) == TRUE) {
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lineNumber = line.LineNumber;
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fileName = line.FileName;
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} else {
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lineNumber = 0;
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fileName = "??";
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}
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auto demangledName = demangle(symbolName);
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stackTrace.push_back(StackFrame { fileName, demangledName, lineNumber });
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}
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SymCleanup(process);
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return StackTraceResult{ stackTrace, "StackWalk" };
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}
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}
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#elif defined(HEX_HAS_EXECINFO)
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#if __has_include(BACKTRACE_HEADER)
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#include BACKTRACE_HEADER
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#include <filesystem>
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#include <dlfcn.h>
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#include <array>
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namespace hex::trace {
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void initialize() {
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}
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StackTraceResult getStackTrace() {
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std::scoped_lock lock(s_traceMutex);
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static std::vector<StackFrame> result;
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std::array<void*, 128> addresses = {};
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const size_t count = backtrace(addresses.data(), addresses.size());
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Dl_info info;
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for (size_t i = 0; i < count; i += 1) {
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dladdr(addresses[i], &info);
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auto fileName = info.dli_fname != nullptr ? std::filesystem::path(info.dli_fname).filename().string() : "??";
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auto demangledName = info.dli_sname != nullptr ? demangle(info.dli_sname) : "??";
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result.push_back(StackFrame { .file=std::move(fileName), .function=std::move(demangledName), .line=0 });
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}
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return StackTraceResult{ .stackFrames=result, .implementationName="execinfo" };
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}
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}
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#endif
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#elif defined(HEX_HAS_BACKTRACE)
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#if __has_include(BACKTRACE_HEADER)
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#include BACKTRACE_HEADER
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#include <wolv/io/fs.hpp>
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namespace hex::trace {
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static struct backtrace_state *s_backtraceState;
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void initialize() {
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std::lock_guard lock(s_traceMutex);
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if (auto executablePath = wolv::io::fs::getExecutablePath(); executablePath.has_value()) {
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static std::string path = executablePath->string();
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s_backtraceState = backtrace_create_state(path.c_str(), 1, [](void *, const char *, int) { }, nullptr);
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}
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}
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StackTraceResult getStackTrace() {
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std::lock_guard lock(s_traceMutex);
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static std::vector<StackFrame> result;
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if (s_backtraceState != nullptr) {
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backtrace_full(s_backtraceState, 0, [](void *, uintptr_t, const char *fileName, int lineNumber, const char *function) -> int {
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if (fileName == nullptr)
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fileName = "??";
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if (function == nullptr)
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function = "??";
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result.push_back(StackFrame { std::filesystem::path(fileName).filename().string(), demangle(function), std::uint32_t(lineNumber) });
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return 0;
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}, nullptr, nullptr);
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}
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return StackTraceResult{ result, "backtrace" };
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}
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}
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#endif
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#else
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namespace hex::trace {
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void initialize() { }
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StackTraceResult getStackTrace() {
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std::lock_guard lock(s_traceMutex);
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return StackTraceResult {
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{StackFrame { "??", "Stacktrace collecting not available!", 0 }},
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"none"
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};
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}
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}
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#endif
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