| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | #include <malloc.h> |
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| 3 | #include <stdlib.h> |
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| 4 | #include <string.h> |
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| 5 | #include <assert.h> |
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| 6 | #include "utils.h" |
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| 7 | |
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| 8 | void *TEST_MEMMOVE(const void *s1, const void *s2, size_t n); |
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| 9 | |
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| 10 | #define BUF_LEN 65536 |
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| 11 | #define MAX_OFFSET 512 |
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| 12 | |
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| 13 | size_t max(size_t a, size_t b) |
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| 14 | { |
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| 15 | if (a >= b) |
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| 16 | return a; |
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| 17 | return b; |
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| 18 | } |
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| 19 | |
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| 20 | static int testcase_run(void) |
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| 21 | { |
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| 22 | size_t i, src_off, dst_off, len; |
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| 23 | |
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| 24 | char *usermap = memalign(BUF_LEN, BUF_LEN); |
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| 25 | char *kernelmap = memalign(BUF_LEN, BUF_LEN); |
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| 26 | |
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| 27 | assert(usermap != NULL); |
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| 28 | assert(kernelmap != NULL); |
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| 29 | |
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| 30 | memset(usermap, 0, BUF_LEN); |
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| 31 | memset(kernelmap, 0, BUF_LEN); |
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| 32 | |
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| 33 | for (i = 0; i < BUF_LEN; i++) { |
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| 34 | usermap[i] = i & 0xff; |
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| 35 | kernelmap[i] = i & 0xff; |
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| 36 | } |
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| 37 | |
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| 38 | for (src_off = 0; src_off < MAX_OFFSET; src_off++) { |
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| 39 | for (dst_off = 0; dst_off < MAX_OFFSET; dst_off++) { |
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| 40 | for (len = 1; len < MAX_OFFSET - max(src_off, dst_off); len++) { |
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| 41 | |
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| 42 | memmove(usermap + dst_off, usermap + src_off, len); |
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| 43 | TEST_MEMMOVE(kernelmap + dst_off, kernelmap + src_off, len); |
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| 44 | if (memcmp(usermap, kernelmap, MAX_OFFSET) != 0) { |
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| 45 | printf("memmove failed at %ld %ld %ld\n" , |
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| 46 | src_off, dst_off, len); |
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| 47 | abort(); |
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| 48 | } |
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| 49 | } |
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| 50 | } |
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| 51 | } |
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| 52 | return 0; |
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| 53 | } |
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| 54 | |
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| 55 | int main(void) |
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| 56 | { |
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| 57 | return test_harness(testcase_run, "memmove" ); |
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| 58 | } |
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| 59 | |
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