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