physical allocator is now available

1 files changed, 38 insertions, 5 deletions

diff --git a/kernel/memory.h b/kernel/memory.h
index da573da..af50c36 100644
--- a/kernel/memory.h
+++ b/kernel/memory.h
@@ -4,13 +4,46 @@
 #include <stdint.h>
 
 typedef uint64_t phys_addr_t;
-typedef uint64_t virt_addr_t;
 
-void memory_init();
+enum memory_range_type
+{
+    UNUSABLE_MEMORY,
+    RESERVED_MEMORY,
+    SYSTEM_MEMORY,
+    AVAILABLE_MEMORY,
+};
 
-void *kmalloc(size_t size);
-void kfree(void *block);
+struct memory_range
+{
+    enum memory_range_type type;
+    phys_addr_t base;
+    size_t size;
+};
+
+enum map_page_flags
+{
+    CONTENT_CODE = 0x1,
+    CONTENT_RODATA = 0x2,
+    CONTENT_RWDATA = 0x3,
+    CONTENT_MASK = 0x3,
+    
+    SIZE_4K = 0x4,
+    SIZE_2M = 0x8,
+    SIZE_1G = 0xc,
+    SIZE_MASK = 0xc,
+};
+
+void memory_init(struct memory_range *ranges, int count);
+
+void *memcpy(void *dest, const void *src, size_t size);
+void *memmove(void *dest, const void *src, size_t size);
+void *memset(void *dest, int val, size_t size);
+void *memcmp(const void *str1, const void *str2, size_t count);
+
+void *kernel_map_page_at(void *vaddr,
+                         phys_addr_t phys,
+                         enum map_page_flags flags);
+void kernel_unmap_page(void *virt);
 
 phys_addr_t page_alloc(void);
 void page_free(phys_addr_t page);
-