From 7baf28a82d85fb76e2197bd770df8d19eeab1647 Mon Sep 17 00:00:00 2001
From: "E. Almqvist" <elalmqvist@gmail.com>
Date: Fri, 26 Nov 2021 08:38:39 +0100
Subject: [PATCH] MMU but in C

---
 kernel/paging.c | 10 ++++++++--
 kernel/paging.h |  3 ++-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/kernel/paging.c b/kernel/paging.c
index a4f1296..97faaab 100644
--- a/kernel/paging.c
+++ b/kernel/paging.c
@@ -1,8 +1,14 @@
 #include "paging.h"
 
+// Page Entry struct
 struct page_entry {
 	unsigned int index;
 	unsigned int start_addr;
-}; 
+} page_table[PAGE_TABLE_SIZE];
 
-page_entry page_table[PAGE_TABLE_SIZE];
+int get_phys_addr(int virt_addr) {
+	int index = virt_addr / PAGE_SIZE; // page index for the virtual address
+	int offset = virt_addr % PAGE_SIZE; // actual physical offset for the address
+
+	return page_table[index].start_addr + offset;
+}
diff --git a/kernel/paging.h b/kernel/paging.h
index fa20b2e..9fb6bc2 100644
--- a/kernel/paging.h
+++ b/kernel/paging.h
@@ -2,5 +2,6 @@
 #define PAGE_TABLE_SIZE 128
 
 struct page_entry;
-// page_entry page_table[PAGE_TABLE_SIZE];
 
+char** heap_alloc(unsigned int size); // Process heap allocation
+int get_phys_addr(int virt_addr);