From 682c47a98844ffec3f3129160e9cdb98ba129989 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Mon, 30 Sep 2019 22:41:39 +0200
Subject: Added paging and fixed several bugs

---
 src/kernel/paging/kheap.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 src/kernel/paging/kheap.h

(limited to 'src/kernel/paging/kheap.h')

diff --git a/src/kernel/paging/kheap.h b/src/kernel/paging/kheap.h
new file mode 100644
index 0000000..7a92957
--- /dev/null
+++ b/src/kernel/paging/kheap.h
@@ -0,0 +1,51 @@
+#ifndef MELVIX_KHEAP_H
+#define MELVIX_KHEAP_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#define KHEAP_MAGIC    0x13374242
+#define KHEAP_MAGIC2 0xDEADBEEF
+#define KHEAP_END 0xFFFFDEAD
+#define MEM_END 0x8000000
+
+extern unsigned int end;
+
+typedef struct {
+    unsigned int magic;
+    bool free;
+    unsigned int size;
+    unsigned int magic2;
+} heap_header_t;
+
+typedef struct {
+    unsigned int magic;
+    unsigned int size;
+    unsigned int magic2;
+} heap_footer_t;
+
+#define HEAP_S (sizeof(heap_header_t))
+#define HEAP_TOTAL (sizeof(heap_footer_t) + HEAP_S)
+#define HEAP_MINIMUM 1
+#define HEAP_FIND_SIZE (HEAP_TOTAL + HEAP_MINIMUM)
+
+void init_kheap();
+
+void *fmalloc(unsigned int size);
+
+void *kmalloc(unsigned int size);
+
+void *kmalloc_a(unsigned int size);
+
+void kfree(void *ptr);
+
+void *umalloc(size_t size);
+
+void ufree(void *address);
+
+void init_heap(heap_header_t *heap, size_t size);
+
+#define KHEAP_SIZE 0xFFFFF
+#define UHEAP_SIZE 0xFFFFF
+
+#endif
-- 
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