1/*
2 * strlen test.
3 *
4 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 * See https://llvm.org/LICENSE.txt for license information.
6 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 */
8
9#include <stdint.h>
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include <limits.h>
14#include "stringlib.h"
15
16static const struct fun
17{
18 const char *name;
19 size_t (*fun)(const char *s);
20} funtab[] = {
21#define F(x) {#x, x},
22F(strlen)
23#if __aarch64__
24F(__strlen_aarch64)
25F(__strlen_aarch64_mte)
26# if __ARM_FEATURE_SVE
27F(__strlen_aarch64_sve)
28# endif
29#elif __arm__
30# if __ARM_ARCH >= 6 && __ARM_ARCH_ISA_THUMB == 2
31F(__strlen_armv6t2)
32# endif
33#endif
34#undef F
35 {0, 0}
36};
37
38static int test_status;
39#define ERR(...) (test_status=1, printf(__VA_ARGS__))
40
41#define A 32
42#define SP 512
43#define LEN 250000
44static char sbuf[LEN+2*A];
45
46static void *alignup(void *p)
47{
48 return (void*)(((uintptr_t)p + A-1) & -A);
49}
50
51static void test(const struct fun *fun, int align, int len)
52{
53 char *src = alignup(p: sbuf);
54 char *s = src + align;
55 size_t r;
56
57 if (len > LEN || align >= A)
58 abort();
59
60 for (int i = 0; i < len + A; i++)
61 src[i] = '?';
62 for (int i = 0; i < len - 2; i++)
63 s[i] = 'a' + i%23;
64 s[len - 1] = '\0';
65
66 r = fun->fun(s);
67 if (r != len-1) {
68 ERR("%s(%p) returned %zu\n", fun->name, s, r);
69 ERR("input: %.*s\n", align+len+1, src);
70 ERR("expected: %d\n", len);
71 abort();
72 }
73}
74
75int main()
76{
77 int r = 0;
78 for (int i=0; funtab[i].name; i++) {
79 test_status = 0;
80 for (int a = 0; a < A; a++) {
81 int n;
82 for (n = 1; n < 100; n++)
83 test(fun: funtab+i, align: a, len: n);
84 for (; n < LEN; n *= 2)
85 test(fun: funtab+i, align: a, len: n);
86 }
87 printf(format: "%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
88 if (test_status)
89 r = -1;
90 }
91 return r;
92}
93

source code of libc/AOR_v20.02/string/test/strlen.c