59 lines · c
1// SPDX-License-Identifier: GPL-2.02#include <malloc.h>3#include <stdlib.h>4#include <string.h>5#include <assert.h>6#include "utils.h"7 8void *TEST_MEMMOVE(const void *s1, const void *s2, size_t n);9 10#define BUF_LEN 6553611#define MAX_OFFSET 51212 13size_t max(size_t a, size_t b)14{15 if (a >= b)16 return a;17 return b;18}19 20static int testcase_run(void)21{22 size_t i, src_off, dst_off, len;23 24 char *usermap = memalign(BUF_LEN, BUF_LEN);25 char *kernelmap = memalign(BUF_LEN, BUF_LEN);26 27 assert(usermap != NULL);28 assert(kernelmap != NULL);29 30 memset(usermap, 0, BUF_LEN);31 memset(kernelmap, 0, BUF_LEN);32 33 for (i = 0; i < BUF_LEN; i++) {34 usermap[i] = i & 0xff;35 kernelmap[i] = i & 0xff;36 }37 38 for (src_off = 0; src_off < MAX_OFFSET; src_off++) {39 for (dst_off = 0; dst_off < MAX_OFFSET; dst_off++) {40 for (len = 1; len < MAX_OFFSET - max(src_off, dst_off); len++) {41 42 memmove(usermap + dst_off, usermap + src_off, len);43 TEST_MEMMOVE(kernelmap + dst_off, kernelmap + src_off, len);44 if (memcmp(usermap, kernelmap, MAX_OFFSET) != 0) {45 printf("memmove failed at %ld %ld %ld\n",46 src_off, dst_off, len);47 abort();48 }49 }50 }51 }52 return 0;53}54 55int main(void)56{57 return test_harness(testcase_run, "memmove");58}59