random + rdrand

include/zinnia/random.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <zinnia/initgraph.h>
+#include <stddef.h>
+#include <stdint.h>
+
+struct random_source {
+    const char* name;
+    uint8_t quality;
+
+    bool (*get_u64)(struct random_source* source, uint64_t* out);
+};
+
+// Registers a source of randomness. Returns true if it is now the active source.
+bool random_register(struct random_source* source);
+
+void random_fill(void* buf, size_t len);
+
+INIT_EXTERN(random_stage);