59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <malloc.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "utils.h"
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void *TEST_MEMMOVE(const void *s1, const void *s2, size_t n);
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#define BUF_LEN 65536
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#define MAX_OFFSET 512
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size_t max(size_t a, size_t b)
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{
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if (a >= b)
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return a;
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return b;
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}
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static int testcase_run(void)
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{
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size_t i, src_off, dst_off, len;
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char *usermap = memalign(BUF_LEN, BUF_LEN);
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char *kernelmap = memalign(BUF_LEN, BUF_LEN);
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assert(usermap != NULL);
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assert(kernelmap != NULL);
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memset(usermap, 0, BUF_LEN);
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memset(kernelmap, 0, BUF_LEN);
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for (i = 0; i < BUF_LEN; i++) {
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usermap[i] = i & 0xff;
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kernelmap[i] = i & 0xff;
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}
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for (src_off = 0; src_off < MAX_OFFSET; src_off++) {
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for (dst_off = 0; dst_off < MAX_OFFSET; dst_off++) {
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for (len = 1; len < MAX_OFFSET - max(src_off, dst_off); len++) {
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memmove(usermap + dst_off, usermap + src_off, len);
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TEST_MEMMOVE(kernelmap + dst_off, kernelmap + src_off, len);
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if (memcmp(usermap, kernelmap, MAX_OFFSET) != 0) {
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printf("memmove failed at %ld %ld %ld\n",
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src_off, dst_off, len);
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abort();
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}
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}
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}
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}
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return 0;
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}
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int main(void)
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{
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return test_harness(testcase_run, "memmove");
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}
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