// SPDX-License-Identifier: GPL-2.0+

#include <linux/kernel.h>
#include <linux/kprobes.h>
#include <kunit/test.h>
#include "test-kprobes.h"

static int kprobe_dummy_handler(struct kprobe *kp, struct pt_regs *regs)
{
        return 0;
}

static void test_kprobe_riscv(struct kunit *test)
{
        unsigned int num_kprobe = 0;
        long (*func)(void);
        struct kprobe *kp;
        int i;

        while (test_kprobes_addresses[num_kprobe])
                num_kprobe++;

        kp = kzalloc_objs(*kp, num_kprobe);
        KUNIT_EXPECT_TRUE(test, kp);
        if (!kp)
                return;

        for (i = 0; i < num_kprobe; ++i) {
                kp[i].addr = test_kprobes_addresses[i];
                kp[i].pre_handler = kprobe_dummy_handler;
                KUNIT_EXPECT_EQ(test, 0, register_kprobe(&kp[i]));
        }

        for (i = 0;; ++i) {
                func = test_kprobes_functions[i];
                if (!func)
                        break;
                KUNIT_EXPECT_EQ_MSG(test, KPROBE_TEST_MAGIC, func(), "function %d broken", i);
        }

        for (i = 0; i < num_kprobe; ++i)
                unregister_kprobe(&kp[i]);
        kfree(kp);
}

static struct kunit_case kprobes_testcases[] = {
        KUNIT_CASE(test_kprobe_riscv),
        {}
};

static struct kunit_suite kprobes_test_suite = {
        .name = "kprobes_riscv",
        .test_cases = kprobes_testcases,
};

kunit_test_suites(&kprobes_test_suite);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("KUnit test for riscv kprobes");