Kernel: Kernel::Panic now dumps stacktrace to com1

kernel/include/kernel/Panic.h

@@ -9,12 +9,31 @@
 namespace Kernel
 {
 
+	static void dump_stacktrace()
+	{
+		struct stackframe
+		{
+			stackframe* ebp;
+			uint32_t eip;
+		};
+
+		stackframe* frame;
+		asm volatile("movl %%ebp, %0" : "=r"(frame));
+		BAN::Formatter::println(Serial::serial_putc, "\e[36mStack trace:");
+		while (frame)
+		{
+			BAN::Formatter::println(Serial::serial_putc, "    0x{8H}", frame->eip);
+			frame = frame->ebp;
+		}
+	}
+
 	template<typename... Args>
 	__attribute__((__noreturn__))
 	static void PanicImpl(const char* file, int line, const char* message, Args... args)
 	{
 		derrorln("Kernel panic at {}:{}", file, line);
 		derrorln(message, args...);
+		dump_stacktrace();
 		if (TTY::IsInitialized())
 		{
 			kprint("\e[31mKernel panic at {}:{}\n", file, line);