Make a common header for attribute shorthands

kernel/src/arch/Serial.h

@@ -1,5 +1,5 @@
 #pragma once
-#include <FormatAttribute.h>
+#include <Attributes.h>
 #include <Types.h>
 
 template <typename T> class Result;

luna/Attributes.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#define _weak __attribute__((weak))
+#define _format(n, m) __attribute__((format(printf, n, m)))
+#define _align(x) __attribute__((aligned(x)))
+#define _noreturn __attribute__((noreturn))

luna/Format.h

@@ -1,6 +1,6 @@
 #pragma once
+#include <Attributes.h>
 #include <CType.h>
-#include <FormatAttribute.h>
 #include <Result.h>
 #include <stdarg.h>
 

luna/FormatAttribute.h

@@ -1,2 +0,0 @@
-#pragma once
-#define _format(n, m) __attribute__((format(printf, n, m)))