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/*
* memcmp test.
*
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
* See https://llvm.org/LICENSE.txt for license information.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "stringlib.h"
static const struct fun
{
const char *name;
int (*fun)(const void *s1, const void *s2, size_t n);
} funtab[] = {
#define F(x) {#x, x},
F(memcmp)
#if __aarch64__
F(__memcmp_aarch64)
# if __ARM_FEATURE_SVE
F(__memcmp_aarch64_sve)
# endif
#endif
#undef F
{0, 0}
};
static int test_status;
#define ERR(...) (test_status=1, printf(__VA_ARGS__))
#define A 32
#define LEN 250000
static unsigned char s1buf[LEN+2*A];
static unsigned char s2buf[LEN+2*A];
static void *alignup(void *p)
{
return (void*)(((uintptr_t)p + A-1) & -A);
}
static void test(const struct fun *fun, int s1align, int s2align, int len, int diffpos)
{
unsigned char *src1 = alignup(s1buf);
unsigned char *src2 = alignup(s2buf);
unsigned char *s1 = src1 + s1align;
unsigned char *s2 = src2 + s2align;
int r;
if (len > LEN || s1align >= A || s2align >= A)
abort();
if (diffpos && diffpos >= len)
abort();
for (int i = 0; i < len+A; i++)
src1[i] = src2[i] = '?';
for (int i = 0; i < len; i++)
s1[i] = s2[i] = 'a' + i%23;
if (diffpos)
s1[diffpos]++;
r = fun->fun(s1, s2, len);
if ((!diffpos && r != 0) || (diffpos && r == 0)) {
ERR("%s(align %d, align %d, %d) failed, returned %d\n",
fun->name, s1align, s2align, len, r);
ERR("src1: %.*s\n", s1align+len+1, src1);
ERR("src2: %.*s\n", s2align+len+1, src2);
}
}
int main()
{
int r = 0;
for (int i=0; funtab[i].name; i++) {
test_status = 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, 0);
test(funtab+i, d, s, n, n / 2);
}
for (; n < LEN; n *= 2) {
test(funtab+i, d, s, n, 0);
test(funtab+i, d, s, n, n / 2);
}
}
printf("%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
if (test_status)
r = -1;
}
return r;
}
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