From bc03b2dbee8a7458a3ed89abd643bf004f0f403b Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Wed, 26 Mar 2025 09:29:01 +0100
Subject: feat(debugger): Better design for LibDebugger, and a patch for the
 POSIX CLI.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/LibDebugger/src/POSIXContract.cc | 128 +++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 dev/LibDebugger/src/POSIXContract.cc

(limited to 'dev/LibDebugger/src/POSIXContract.cc')

diff --git a/dev/LibDebugger/src/POSIXContract.cc b/dev/LibDebugger/src/POSIXContract.cc
new file mode 100644
index 0000000..3caeabf
--- /dev/null
+++ b/dev/LibDebugger/src/POSIXContract.cc
@@ -0,0 +1,128 @@
+/***
+	(C) 2025 Amlal El Mahrouss
+ */
+
+#include <LibCompiler/Defines.h>
+#include <Vendor/Dialogs.h>
+#include <LibDebugger/POSIXContract.h>
+#include <cstdint>
+#include <string>
+
+#ifndef _WIN32
+
+static bool										 kKeepRunning = false;
+static LibDebugger::POSIX::POSIXDebuggerContract kDebugger;
+static pid_t									 kPID = 0L;
+
+/// @internal
+/// @brief Handles CTRL-C signal on debugger.
+static void dbgl_ctrlc_handler(std::int32_t _)
+{
+	if (!kPID)
+	{
+		return;
+	}
+
+	auto list = kDebugger.Get();
+
+	LibDebugger::CAddress addr = (LibDebugger::CAddress)list[list.size() - 1];
+
+	if (!addr)
+	{
+		pfd::notify("Debugger Event", "Invalid breakpoint at: " + std::to_string(list[list.size() - 1]));
+		return;
+	}
+
+	kDebugger.Break(addr);
+
+	pfd::notify("Debugger Event", "Breakpoint at: " + std::to_string(list[list.size() - 1]));
+
+	kKeepRunning = false;
+}
+
+LIBCOMPILER_MODULE(DebuggerPOSIX)
+{
+	pfd::notify("Debugger Event", "NeKernel Debugger\n(C) 2025 Amlal El Mahrouss, all rights reserved.");
+
+	if (argc >= 3 && std::string(argv[1]) == "-p" &&
+		argv[2] != nullptr)
+	{
+		kPID = std::stoi(argv[2]);
+		kDebugger.Attach(kPID);
+	}
+
+	::signal(SIGINT, dbgl_ctrlc_handler);
+
+	while (YES)
+	{
+		if (kKeepRunning)
+		{
+			continue;
+		}
+
+		std::string cmd;
+		std::getline(std::cin, cmd);
+
+		if (cmd == "c" ||
+			cmd == "cont")
+		{
+			kDebugger.Continue();
+			kKeepRunning = true;
+
+			std::cout << "[+] Continuing...\n";
+			pfd::notify("Debugger Event", "Continuing...");
+		}
+
+		if (cmd == "d" ||
+			cmd == "detach")
+			kDebugger.Detach();
+
+		if (cmd == "attach")
+		{
+			std::cout << "[?] Enter a PID to attach on: ";
+
+			std::getline(std::cin, cmd);
+			kPID = std::stoi(cmd.c_str());
+
+			pfd::notify("Debugger Event", "Attach process: " + std::to_string(kPID));
+
+			kDebugger.Attach(kPID);
+		}
+
+		if (cmd == "exit")
+		{
+			if (kPID > 0)
+				kDebugger.Detach();
+
+			break;
+		}
+
+		if (cmd == "break" ||
+			cmd == "b")
+		{
+			std::cout << "[?] Enter an address/symbol to add a break on: ";
+
+			std::getline(std::cin, cmd);
+
+			auto addr = std::stoul(cmd.c_str(), nullptr, 16);
+
+			try
+			{
+				pfd::notify("Debugger Event", "Add Breakpoint at: " + std::to_string(addr));
+			}
+			catch (...)
+			{
+				pfd::notify("Debugger Event", "Add Breakpoint at: " + cmd);
+			}
+
+			LibDebugger::CAddress breakpoint_addr = reinterpret_cast<LibDebugger::CAddress>(addr);
+
+			if (breakpoint_addr)
+				kDebugger.Break(breakpoint_addr);
+		}
+	}
+
+	return EXIT_SUCCESS;
+}
+
+#endif
\ No newline at end of file
-- 
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