feat: Started om paging

kernel/src/mm/pmm.c

@@ -82,7 +82,7 @@ void pmm_init(void)
     }
 }
 
-void *pmm_request_pages(size_t pages, bool higher_half)
+void *palloc(size_t pages, bool higher_half)
 {
     if (pages == 0 || pages > free_pages)
         return NULL;
@@ -137,7 +137,7 @@ void *pmm_request_pages(size_t pages, bool higher_half)
     return NULL;
 }
 
-void pmm_release_pages(void *ptr, size_t pages)
+void pfree(void *ptr, size_t pages)
 {
     if (!ptr || !is_aligned(ptr, MIN_ALIGN))
         return;

kernel/src/mm/pmm.h

@@ -7,7 +7,7 @@
 #define PAGE_SIZE 0x1000
 
 void pmm_init();
-void *pmm_request_pages(size_t pages, bool higher_half);
-void pmm_release_pages(void *ptr, size_t pages);
+void *palloc(size_t pages, bool higher_half);
+void pfree(void *ptr, size_t pages);
 
 #endif // PMM_H

kernel/src/mm/vmm.h

@@ -0,0 +1,22 @@
+#ifndef VMM_H
+#define VMM_H
+
+#include <stdint.h>
+
+typedef struct vm_region
+{
+    uint64_t start;
+    uint64_t pages;
+    struct vm_region *next;
+    /* TOOD: Maybe store flags */
+} vm_region_t;
+
+typedef struct vma_ctx
+{
+    vm_region_t *root;
+    uint64_t *pagemap;
+} vma_ctx_t;
+
+void vmm_init();
+
+#endif // VMM_H