benchmark_toolbox: hanoi cpu test

Source/Benchmark-Toolbox/source/cpustress/cpu_stress.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    uint64_t iters;
+    uint64_t mismatches;
+    int threads;
+    int running;
+} cpu_stress_status_t;
+
+void cpu_stress_start(int mode);
+void cpu_stress_stop(void);
+int cpu_stress_running(void);
+void cpu_stress_get(cpu_stress_status_t *out);
+
+#ifdef __cplusplus
+}
+#endif