sw/device/lib/util.h

#ifndef SW_DEVICE_LIB_UTIL_H_
#define SW_DEVICE_LIB_UTIL_H_

#include <stdbool.h>
#include <stdint.h>

#ifndef MIN
#define MIN(X, Y) (X < Y ? X : Y)
#endif

inline void cycle_count_enable(bool enable) {
    unsigned int val = enable ? 0x0 : 0xFFFFFFFF;
    asm volatile("csrw 0x320, %0" : : "r"(val));
}

inline uint32_t cycle_count_read(void) {
    uint32_t ret;
    asm volatile("csrr %0, mcycle" : "=r"(ret));
    return ret;
}

#endif  // SW_DEVICE_LIB_UTIL_H_