emulator/csr_unpriv_counter_timer.c


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#include "emulator/csr.h"

#include "emulator/hart.h"

static uint32_t csr_cycle(Hart* hart, uint32_t v, enum CsrAction a)
{
    return hart->instret & 0xFFFFFFFF;
}

static uint32_t csr_cycleh(Hart* hart, uint32_t v, enum CsrAction a)
{
    return hart->instret >> 32;
}

static uint32_t csr_time(Hart* hart, uint32_t v, enum CsrAction a)
{
    return hart->time & 0xFFFFFFFF;
}

static uint32_t csr_timeh(Hart* hart, uint32_t v, enum CsrAction a)
{
    return hart->time >> 32;
}

void csr_init_unpriv_counter_timer(Hart* hart)
{
    hart->csrs[CSR_CYCLE].action = csr_cycle;
    hart->csrs[CSR_CYCLEH].action = csr_cycleh;
    hart->csrs[CSR_INSTRET].action = csr_cycle;
    hart->csrs[CSR_INSTRETH].action = csr_cycleh;
    hart->csrs[CSR_TIME].action = csr_time;
    hart->csrs[CSR_TIMEH].action = csr_timeh;
}