Modify: bf: add file optional argument

src/kernel/system.c

@@ -34,6 +34,18 @@ void *memmove(void* dest, const void* src, size_t n)
 	return dest;
 }
 
+void *memcpy(void* dest, const void* src, uint32_t n)
+{
+	uint8_t* d = (uint8_t*)dest;
+	const uint8_t* s = (const uint8_t*)src;
+
+	for (uint32_t i=0; i<n; i++)
+	{
+		d[i] = s[i];
+	}
+	return dest;
+}
+
 void panic()
 {
 	for (;;);