// SPDX-License-Identifier: GPL-2.0-only
/*
 * vdso_test_getcpu.c: Sample code to test parse_vdso.c and vDSO getcpu()
 *
 * Copyright (c) 2020 Arm Ltd
 */

#include <stdint.h>
#include <elf.h>
#include <stdio.h>
#include <sys/auxv.h>
#include <sys/time.h>

#include "kselftest.h"
#include "parse_vdso.h"
#include "vdso_config.h"
#include "vdso_call.h"

typedef long (*getcpu_t)(unsigned int *, unsigned int *, void *);

int main(int argc, char **argv)
{
        const char *version = versions[VDSO_VERSION];
        const char **name = (const char **)&names[VDSO_NAMES];
        unsigned long sysinfo_ehdr;
        unsigned int cpu, node;
        getcpu_t get_cpu;
        long ret;

        sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
        if (!sysinfo_ehdr) {
                printf("AT_SYSINFO_EHDR is not present!\n");
                return KSFT_SKIP;
        }

        vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));

        get_cpu = (getcpu_t)vdso_sym(version, name[4]);
        if (!get_cpu) {
                printf("Could not find %s\n", name[4]);
                return KSFT_SKIP;
        }

        ret = VDSO_CALL(get_cpu, 3, &cpu, &node, 0);
        if (ret == 0) {
                printf("Running on CPU %u node %u\n", cpu, node);
        } else {
                printf("%s failed\n", name[4]);
                return KSFT_FAIL;
        }

        return 0;
}