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/*
* memset test.
*
* Copyright (c) 2019-2023, Arm Limited.
* SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
*/
#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 *s, int c, size_t n);
int test_mte;
} funtab[] = {
// clang-format off
F(memset, 0)
#if __aarch64__
F(__memset_aarch64, 1)
# if WANT_MOPS
F(__memset_aarch64_mops, 1)
# endif
#elif __arm__
F(__memset_arm, 0)
#endif
{0, 0, 0}
// clang-format on
};
#undef F
#define A 32
#define LEN 250000
static unsigned char *sbuf;
static void *
alignup (void *p)
{
return (void *) (((uintptr_t) p + A - 1) & -A);
}
static void
test (const struct fun *fun, int salign, int c, int len)
{
unsigned char *src = alignup (sbuf);
unsigned char *s = src + salign;
void *p;
int i;
if (err_count >= ERR_LIMIT)
return;
if (len > LEN || salign >= A)
abort ();
for (i = 0; i < len + A; i++)
src[i] = '?';
for (i = 0; i < len; i++)
s[i] = 'a' + i % 23;
s = tag_buffer (s, len, fun->test_mte);
p = fun->fun (s, c, len);
untag_buffer (s, len, fun->test_mte);
if (p != s)
ERR ("%s(%p,..) returned %p\n", fun->name, s, p);
for (i = 0; i < salign; i++)
{
if (src[i] != '?')
{
ERR ("%s(align %d, %d, %d) failed\n", fun->name, salign, c, len);
quoteat ("got", src, len + A, i);
return;
}
}
for (; i < salign + len; i++)
{
if (src[i] != (unsigned char) c)
{
ERR ("%s(align %d, %d, %d) failed\n", fun->name, salign, c, len);
quoteat ("got", src, len + A, i);
return;
}
}
for (; i < len + A; i++)
{
if (src[i] != '?')
{
ERR ("%s(align %d, %d, %d) failed\n", fun->name, salign, c, len);
quoteat ("got", src, len + A, i);
return;
}
}
}
int
main ()
{
sbuf = mte_mmap (LEN + 2 * A);
int r = 0;
for (int i = 0; funtab[i].name; i++)
{
err_count = 0;
for (int s = 0; s < A; s++)
{
int n;
for (n = 0; n < 100; n++)
{
test (funtab + i, s, 0, n);
test (funtab + i, s, 0x25, n);
test (funtab + i, s, 0xaa25, n);
}
for (; n < LEN; n *= 2)
{
test (funtab + i, s, 0, n);
test (funtab + i, s, 0x25, n);
test (funtab + i, s, 0xaa25, 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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