libc/AOR_v20.02/string/test/strlen.c

   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
  16 static const struct fun
  17 {
  18         const char *name;
  19         size_t (*fun)(const char *s);
  20 } funtab[] = {
  21 #define F(x) {#x, x},
  22 F(strlen)
  23 #if __aarch64__
  24 F(__strlen_aarch64)
  25 F(__strlen_aarch64_mte)
  26 # if __ARM_FEATURE_SVE
  27 F(__strlen_aarch64_sve)
  28 # endif
  29 #elif __arm__
  30 # if __ARM_ARCH >= 6 && __ARM_ARCH_ISA_THUMB == 2
  31 F(__strlen_armv6t2)
  32 # endif
  33 #endif
  34 #undef F
  35         {0, 0}
  36 };
  37
  38 static 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
  44 static char sbuf[LEN+2*A];
  45
  46 static void *alignup(void *p)
  47 {
  48         return (void*)(((uintptr_t)p + A-1) & -A);
  49 }
  50
  51 static void test(const struct fun *fun, int align, int len)
  52 {
  53         char *src = alignup(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
  75 int 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(funtab+i, a, n);
  84                         for (; n < LEN; n *= 2)
  85                                 test(funtab+i, a, n);
  86                 }
  87                 printf("%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
  88                 if (test_status)
  89                         r = -1;
  90         }
  91         return r;
  92 }