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/*
* strlen test.
*
* Copyright (c) 2019-2022, 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 <limits.h>
#include "mte.h"
#include "stringlib.h"
#include "stringtest.h"
#define F(x, mte) {#x, x, mte},
static const struct fun
{
const char *name;
size_t (*fun) (const char *s);
int test_mte;
} funtab[] = {
// clang-format off
F(strlen, 0)
#if __aarch64__
F(__strlen_aarch64, 0)
F(__strlen_aarch64_mte, 1)
# if __ARM_FEATURE_SVE
F(__strlen_aarch64_sve, 1)
# endif
#elif __arm__
# if __ARM_ARCH >= 6 && __ARM_ARCH_ISA_THUMB == 2
F(__strlen_armv6t2, 0)
# endif
#endif
{0, 0, 0}
// clang-format on
};
#undef F
#define ALIGN 32
#define LEN 512
static char *sbuf;
static void *
alignup (void *p)
{
return (void *) (((uintptr_t) p + ALIGN - 1) & -ALIGN);
}
static void
test (const struct fun *fun, int align, int len)
{
char *src = alignup (sbuf);
char *s = src + align;
size_t r;
if (err_count >= ERR_LIMIT)
return;
if (len > LEN || align >= ALIGN)
abort ();
for (int i = 0; src + i < s; i++)
src[i] = 0;
for (int i = 1; i <= ALIGN; i++)
s[len + i] = (len + align) & 1 ? 1 : 0;
for (int i = 0; i < len; i++)
s[i] = 'a' + (i & 31);
s[len] = '\0';
s = tag_buffer (s, len + 1, fun->test_mte);
r = fun->fun (s);
untag_buffer (s, len + 1, fun->test_mte);
if (r != len)
{
ERR ("%s (%p) returned %zu expected %d\n", fun->name, s, r, len);
quote ("input", src, len);
}
}
int
main (void)
{
sbuf = mte_mmap (LEN + 3 * ALIGN);
int r = 0;
for (int i = 0; funtab[i].name; i++)
{
err_count = 0;
for (int a = 0; a < ALIGN; a++)
for (int n = 0; n < LEN; n++)
test (funtab + i, a, 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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