1 // SPDX-License-Identifier: GPL-2.0 2 #include <malloc.h> 3 #include <stdlib.h> 4 #include <string.h> 5 #include <assert.h> 6 #include "utils.h" 7 8 void *TEST_MEMMOVE(const void *s1, const void *s2, size_t n); 9 10 #define BUF_LEN 65536 11 #define MAX_OFFSET 512 12 13 size_t max(size_t a, size_t b) 14 { 15 if (a >= b) 16 return a; 17 return b; 18 } 19 20 static 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 55 int main(void) 56 { 57 return test_harness(testcase_run, "memmove"); 58 } 59