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// SPDX-License-Identifier: GPL-2.0
#include <malloc.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
#include "utils.h"
#define MAX_LEN 8192
#define MAX_OFFSET 16
#define MIN_REDZONE 128
#define BUFLEN (MAX_LEN+MAX_OFFSET+2*MIN_REDZONE)
#define POISON 0xa5
unsigned long COPY_LOOP(void *to, const void *from, unsigned long size);
static void do_one(char *src, char *dst, unsigned long src_off,
unsigned long dst_off, unsigned long len, void *redzone,
void *fill)
{
char *srcp, *dstp;
unsigned long ret;
unsigned long i;
srcp = src + MIN_REDZONE + src_off;
dstp = dst + MIN_REDZONE + dst_off;
memset(src, POISON, BUFLEN);
memset(dst, POISON, BUFLEN);
memcpy(srcp, fill, len);
ret = COPY_LOOP(dstp, srcp, len);
if (ret && ret != (unsigned long)dstp) {
printf("(%p,%p,%ld) returned %ld\n", dstp, srcp, len, ret);
abort();
}
if (memcmp(dstp, srcp, len)) {
printf("(%p,%p,%ld) miscompare\n", dstp, srcp, len);
printf("src: ");
for (i = 0; i < len; i++)
printf("%02x ", srcp[i]);
printf("\ndst: ");
for (i = 0; i < len; i++)
printf("%02x ", dstp[i]);
printf("\n");
abort();
}
if (memcmp(dst, redzone, dstp - dst)) {
printf("(%p,%p,%ld) redzone before corrupted\n",
dstp, srcp, len);
abort();
}
if (memcmp(dstp+len, redzone, dst+BUFLEN-(dstp+len))) {
printf("(%p,%p,%ld) redzone after corrupted\n",
dstp, srcp, len);
abort();
}
}
int test_copy_loop(void)
{
char *src, *dst, *redzone, *fill;
unsigned long len, src_off, dst_off;
unsigned long i;
src = memalign(BUFLEN, BUFLEN);
dst = memalign(BUFLEN, BUFLEN);
redzone = malloc(BUFLEN);
fill = malloc(BUFLEN);
if (!src || !dst || !redzone || !fill) {
fprintf(stderr, "malloc failed\n");
exit(1);
}
memset(redzone, POISON, BUFLEN);
/* Fill with sequential bytes */
for (i = 0; i < BUFLEN; i++)
fill[i] = i & 0xff;
for (len = 1; len < MAX_LEN; len++) {
for (src_off = 0; src_off < MAX_OFFSET; src_off++) {
for (dst_off = 0; dst_off < MAX_OFFSET; dst_off++) {
do_one(src, dst, src_off, dst_off, len,
redzone, fill);
}
}
}
return 0;
}
int main(void)
{
return test_harness(test_copy_loop, str(COPY_LOOP));
}
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