feat: initial

kernel/include/memory/sections.h

@@ -0,0 +1,19 @@
+#pragma once
+#include "memory/pointer.h"
+
+struct KernelSection {
+    uint64_t vma_start;
+    uint64_t vma_end;
+    const char* name;
+
+    paddr_t phys_start() const { return paddr_t{vma_start >= high_base ? vma_start - high_base : vma_start}; }
+    paddr_t phys_end()   const { return paddr_t{vma_end   >= high_base ? vma_end   - high_base : vma_end};   }
+};
+
+extern KernelSection __reserved_ranges_start__[], __reserved_ranges_end__[];
+
+template<typename Fn>
+void for_each_reserved_section(Fn&& fn) {
+    for (auto* s = __reserved_ranges_start__; s < __reserved_ranges_end__; ++s)
+        fn(*s);
+}