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/*
* memset 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;
void *(*fun)(void *s, int c, size_t n);
} funtab[] = {
#define F(x) {#x, x},
F(memset)
#if __aarch64__
F(__memset_aarch64)
#elif __arm__
F(__memset_arm)
#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 sbuf[LEN+2*A];
static void *alignup(void *p)
{
return (void*)(((uintptr_t)p + A-1) & -A);
}
static void err(const char *name, unsigned char *src, int salign, int c, int len)
{
ERR("%s(align %d, %d, %d) failed\n", name, salign, c, len);
ERR("got : %.*s\n", salign+len+1, src);
}
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 (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;
for (; i<len%A; i++)
s[i] = '*';
p = fun->fun(s, c, len);
if (p != s)
ERR("%s(%p,..) returned %p\n", fun->name, s, p);
for (i = 0; i < salign; i++) {
if (src[i] != '?') {
err(fun->name, src, salign, c, len);
return;
}
}
for (i = salign; i < len; i++) {
if (src[i] != (unsigned char)c) {
err(fun->name, src, salign, c, len);
return;
}
}
for (; i < len%A; i++) {
if (src[i] != '*') {
err(fun->name, src, salign, c, len);
return;
}
}
}
int main()
{
int r = 0;
for (int i=0; funtab[i].name; i++) {
test_status = 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);
}
}
printf("%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
if (test_status)
r = -1;
}
return r;
}
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