Got a stack tracer working!!

kernel/include/trace/StackTracer.h

@@ -0,0 +1,12 @@
+#pragma once
+#include <stdint.h>
+
+struct StackTracer
+{
+    StackTracer();
+    StackTracer(uintptr_t base_pointer);
+    void trace();
+
+  private:
+    uintptr_t m_base_pointer;
+};

kernel/src/interrupts/Entry.cpp

@@ -5,6 +5,7 @@
 #include "log/Log.h"
 #include "panic/hang.h"
 #include "std/stdio.h"
+#include "trace/StackTracer.h"
 
 extern "C" void common_handler(SavedContext* context)
 {
@@ -15,14 +16,23 @@ extern "C" void common_handler(SavedContext* context)
     }
     if (context->number == 13)
     {
-        kerrorln("General protection fault at RIP %lx, cs %ld, ss %ld, RSP %lx, error code %ld\n", context->rip,
+        kerrorln("General protection fault at RIP %lx, cs %ld, ss %ld, RSP %lx, error code %ld", context->rip,
                  context->cs, context->ss, context->rsp, context->error_code);
+        kinfoln("Stack trace:");
+
+        StackTracer tracer(context->rbp);
+        tracer.trace();
         while (1) halt();
     }
     if (context->number == 14)
     {
-        kerrorln("Page fault in %s (RIP %lx), while trying to access %lx, error code %ld\n",
+        kerrorln("Page fault in %s (RIP %lx), while trying to access %lx, error code %ld",
                  context->cs == 8 ? "ring 0" : "ring 3", context->rip, context->cr2, context->error_code);
+        kinfoln("Stack trace:");
+
+        StackTracer tracer(context->rbp);
+        tracer.trace();
+
         hang();
     }
     if (context->number == 8)

kernel/src/trace/StackTracer.cpp

@@ -0,0 +1,30 @@
+#include "trace/StackTracer.h"
+#include "std/stdio.h"
+#include "trace/Resolve.h"
+
+StackTracer::StackTracer()
+{
+    asm("mov %%rbp, %0" : "=r"(m_base_pointer));
+}
+
+StackTracer::StackTracer(uintptr_t base_pointer) : m_base_pointer(base_pointer)
+{
+}
+
+typedef struct stackframe
+{
+    struct stackframe* next;
+    uintptr_t instruction;
+} stackframe;
+
+void StackTracer::trace()
+{
+    stackframe* frame = (stackframe*)m_base_pointer;
+    while (frame)
+    {
+        char symbol_name[512];
+        get_symbol_name(frame->instruction, symbol_name);
+        printf("%lx: %s\n", frame->instruction, symbol_name);
+        frame = frame->next;
+    }
+}