- heap allocator now makes sure virtual memory pages are mapped before using them. this means we no longer have to use page faults to allocate frames, it is done automatically.

- fixed the apic code that caused a page fault. it now writes the correct values at the correct physical address
- improved startup logging including displaying how much RAM is installed.

kernel/src/std/debug.rs

@@ -0,0 +1,22 @@
+use core::fmt;
+use x86_64::instructions::interrupts;
+use crate::prelude::{_print_log, _serial_write};
+
+#[macro_export]
+macro_rules! debugln {
+	() => ($crate::print_log!("\n"));
+	($($arg:tt)*) => ($crate::debug!("{}\n", format_args!($($arg)*)));
+}
+
+#[macro_export]
+macro_rules! debug {
+	($($arg:tt)*) => ($crate::prelude::_debug(format_args!($($arg)*)));
+}
+
+pub fn _debug(args: fmt::Arguments) {
+    interrupts::without_interrupts(|| {
+        _print_log(args);
+        _serial_write(args);
+    });
+}
+