[kernel] Use symbol table in stack traces

Now using the symbol table built by build_symbol_table.py in the kernel
when printing stack traces.

src/tools/makerd/entry.cpp

@@ -1,10 +1,12 @@
 #include "entry.h"
 
-entry::entry(const std::string &in, const std::string &out, bool executable) :
+entry::entry(const std::string &in, const std::string &out,
+		bool executable, bool symbols) :
 	m_in(in),
 	m_out(out),
 	m_file(in, std::ios_base::binary),
-	m_exec(executable)
+	m_exec(executable),
+	m_syms(symbols)
 {
 	m_file.seekg(0, std::ios_base::end);
 	m_size = m_file.tellg();

src/tools/makerd/entry.h

@@ -5,13 +5,18 @@
 class entry
 {
 public:
-	entry(const std::string &in, const std::string &out, bool executable = false);
+	entry(
+		const std::string &in,
+		const std::string &out,
+		bool executable = false,
+		bool symbols = false);
 
 	inline const std::string & in() const { return m_in; }
 	inline const std::string & out() const { return m_out; }
 	inline const std::ifstream & file() const { return m_file; }
 
 	inline bool executable() const { return m_exec; }
+	inline bool symbols() const { return m_syms; }
 	inline size_t size() const { return m_size; }
 	inline bool good() const { return m_file.good(); }
 
@@ -21,5 +26,6 @@ private:
 	std::ifstream m_file;
 	size_t m_size;
 	bool m_exec;
+	bool m_syms;
 };
 

src/tools/makerd/main.cpp

@@ -44,8 +44,9 @@ int main(int argc, char **argv)
 		}
 
 		auto exec = file->get_as<bool>("executable").value_or(false);
+		auto syms = file->get_as<bool>("symbols").value_or(false);
 
-		entries.emplace_back(*source, *dest, exec);
+		entries.emplace_back(*source, *dest, exec, syms);
 		const entry &e = entries.back();
 
 		if (!e.good()) {
@@ -96,6 +97,9 @@ int main(int argc, char **argv)
 		if (e.executable())
 			fheader.flags |= initrd::file_flags::executable;
 
+		if (e.symbols())
+			fheader.flags |= initrd::file_flags::symbols;
+
 		out.write(
 			reinterpret_cast<const char *>(&fheader),
 			sizeof(fheader));