docs: documented global kernel heap bindings

.wiki/Kernel-documentation.md

@@ -589,6 +589,17 @@ Returns **false** if there is a different byte.
 Returns **true** if the data is the same.
 There is a similar function on linux called _memcmp_.
 
+#### `memory_allocate(size)` - function (void*)
+Returns the address to a buffer, that is at least **_size_** bytes big.
+On linux this function is called _malloc_.
+
+#### `memory_free(address)` - function (void)
+The buffer at address, this buffer needs to be a buffer, that was created with `memory_allocate`.
+On linux this function is called _free_.
+
+#### `memory_allocator_init(base)` - function (void)
+This initializes the heap, where `memory_allocate` allocates memory.
+
 ### panic.h
 Ahhhhh - the kernel is burning!