diff options
| -rw-r--r-- | tdbg.cpp | 55 |
1 files changed, 53 insertions, 2 deletions
@@ -4,6 +4,8 @@ #include <string> #include <thread> #include <chrono> +#include <fstream> +#include <vector> using namespace lldb; @@ -40,7 +42,6 @@ void print_variables(SBFrame &frame) { } } - void print_backtrace(SBThread &thread) { int num_frames = thread.GetNumFrames(); for (int i = 0; i < num_frames; ++i) { @@ -50,6 +51,25 @@ void print_backtrace(SBThread &thread) { } } +void print_source_line(const std::string& filepath, int line_number) { + std::ifstream file(filepath); + if (!file.is_open()) { + // std::cerr << "Could not open source file: " << filepath << "\n"; + return; + } + + std::string line; + int current_line = 1; + while (std::getline(file, line)) { + if (current_line >= line_number - 3 && current_line <= line_number + 3) { + std::cout << (current_line == line_number ? " -> " : " ") + << current_line << ": " << line << "\n"; + } + if (current_line > line_number + 3) break; + current_line++; + } +} + int main(int argc, char** argv) { if (argc < 2) { std::cerr << "Usage: " << argv[0] << " <target_executable>\n"; @@ -83,6 +103,8 @@ int main(int argc, char** argv) { SBListener listener = debugger.GetListener(); SBEvent event; + std::string last_cmd; + while (true) { // Wait for events from LLDB. if (listener.WaitForEvent(1, event)) { @@ -97,11 +119,38 @@ int main(int argc, char** argv) { std::cout << "Stopped at function: " << frame.GetFunctionName() << ", line: " << frame.GetLineEntry().GetLine() << "\n"; + SBFileSpec line_entry = frame.GetLineEntry().GetFileSpec(); + if (line_entry.IsValid()) { + // Directory and Filename might be null if not debug info + const char* dirname = line_entry.GetDirectory(); + const char* filename = line_entry.GetFilename(); + if (filename) { + std::string fullpath; + if (dirname) { + fullpath = std::string(dirname) + "/" + std::string(filename); + } else { + fullpath = std::string(filename); + } + print_source_line(fullpath, frame.GetLineEntry().GetLine()); + } + } + // REPL loop for user commands. std::string cmd; + while (true) { std::cout << "(tdbg) "; std::getline(std::cin, cmd); + + if (cmd.empty()) { + if (last_cmd.empty()) { + continue; + } + cmd = last_cmd; + } else { + last_cmd = cmd; + } + if (cmd == "c") { process.Continue(); break; // exit REPL, wait for next stop @@ -115,11 +164,13 @@ int main(int argc, char** argv) { print_backtrace(thread); } else if (cmd == "v") { print_variables(frame); + } else if (cmd == "h") { + std::cout << "Commands: c=continue, s=step in, n=step over, bt=backtrace, v=variables, q=quit, h=help\n"; } else if (cmd == "q") { process.Kill(); goto cleanup; } else { - std::cout << "Commands: c=continue, s=step in, n=step over, bt=backtrace, v=variables, q=quit\n"; + std::cout << "Unknown command. Type 'h' for help.\n"; } } break; |