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/*
* memcpy test.
*
* Copyright (c) 2019-2020, Arm Limited.
* SPDX-License-Identifier: MIT
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mte.h"
#include "stringlib.h"
#include "stringtest.h"
#define F(x, mte) {#x, x, mte},
static const struct fun
{
const char *name;
void *(*fun) (void *, const void *, size_t);
int test_mte;
} funtab[] = {
// clang-format off
F(memcpy, 0)
#if __aarch64__
F(__memcpy_aarch64, 1)
# if __ARM_NEON
F(__memcpy_aarch64_simd, 1)
# endif
#elif __arm__
F(__memcpy_arm, 0)
#endif
{0, 0, 0}
// clang-format on
};
#undef F
#define A 32
#define LEN 250000
static unsigned char *dbuf;
static unsigned char *sbuf;
static unsigned char wbuf[LEN + 2 * A];
static void *
alignup (void *p)
{
return (void *) (((uintptr_t) p + A - 1) & -A);
}
static void
test (const struct fun *fun, int dalign, int salign, int len)
{
unsigned char *src = alignup (sbuf);
unsigned char *dst = alignup (dbuf);
unsigned char *want = wbuf;
unsigned char *s = src + salign;
unsigned char *d = dst + dalign;
unsigned char *w = want + dalign;
void *p;
int i;
if (err_count >= ERR_LIMIT)
return;
if (len > LEN || dalign >= A || salign >= A)
abort ();
for (i = 0; i < len + A; i++)
{
src[i] = '?';
want[i] = dst[i] = '*';
}
for (i = 0; i < len; i++)
s[i] = w[i] = 'a' + i % 23;
s = tag_buffer (s, len, fun->test_mte);
d = tag_buffer (d, len, fun->test_mte);
p = fun->fun (d, s, len);
untag_buffer (s, len, fun->test_mte);
untag_buffer (d, len, fun->test_mte);
if (p != d)
ERR ("%s(%p,..) returned %p\n", fun->name, d, p);
for (i = 0; i < len + A; i++)
{
if (dst[i] != want[i])
{
ERR ("%s(align %d, align %d, %d) failed\n", fun->name, dalign, salign,
len);
quoteat ("got", dst, len + A, i);
quoteat ("want", want, len + A, i);
break;
}
}
}
int
main ()
{
dbuf = mte_mmap (LEN + 2 * A);
sbuf = mte_mmap (LEN + 2 * A);
int r = 0;
for (int i = 0; funtab[i].name; i++)
{
err_count = 0;
for (int d = 0; d < A; d++)
for (int s = 0; s < A; s++)
{
int n;
for (n = 0; n < 100; n++)
test (funtab + i, d, s, n);
for (; n < LEN; n *= 2)
test (funtab + i, d, s, n);
}
char *pass = funtab[i].test_mte && mte_enabled () ? "MTE PASS" : "PASS";
printf ("%s %s\n", err_count ? "FAIL" : pass, funtab[i].name);
if (err_count)
r = -1;
}
return r;
}
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