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98 lines
2.1 KiB
98 lines
2.1 KiB
/*
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* memcmp test.
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "stringlib.h"
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static const struct fun
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{
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const char *name;
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int (*fun)(const void *s1, const void *s2, size_t n);
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} funtab[] = {
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#define F(x) {#x, x},
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F(memcmp)
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#if __aarch64__
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F(__memcmp_aarch64)
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# if __ARM_FEATURE_SVE
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F(__memcmp_aarch64_sve)
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# endif
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#endif
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#undef F
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{0, 0}
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};
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static int test_status;
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#define ERR(...) (test_status=1, printf(__VA_ARGS__))
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#define A 32
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#define LEN 250000
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static unsigned char s1buf[LEN+2*A];
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static unsigned char s2buf[LEN+2*A];
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static void *alignup(void *p)
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{
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return (void*)(((uintptr_t)p + A-1) & -A);
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}
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static void test(const struct fun *fun, int s1align, int s2align, int len, int diffpos)
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{
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unsigned char *src1 = alignup(s1buf);
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unsigned char *src2 = alignup(s2buf);
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unsigned char *s1 = src1 + s1align;
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unsigned char *s2 = src2 + s2align;
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int r;
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if (len > LEN || s1align >= A || s2align >= A)
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abort();
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if (diffpos && diffpos >= len)
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abort();
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for (int i = 0; i < len+A; i++)
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src1[i] = src2[i] = '?';
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for (int i = 0; i < len; i++)
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s1[i] = s2[i] = 'a' + i%23;
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if (diffpos)
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s1[diffpos]++;
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r = fun->fun(s1, s2, len);
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if ((!diffpos && r != 0) || (diffpos && r == 0)) {
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ERR("%s(align %d, align %d, %d) failed, returned %d\n",
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fun->name, s1align, s2align, len, r);
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ERR("src1: %.*s\n", s1align+len+1, src1);
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ERR("src2: %.*s\n", s2align+len+1, src2);
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}
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}
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int main()
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{
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int r = 0;
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for (int i=0; funtab[i].name; i++) {
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test_status = 0;
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for (int d = 0; d < A; d++)
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for (int s = 0; s < A; s++) {
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int n;
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for (n = 0; n < 100; n++) {
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test(funtab+i, d, s, n, 0);
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test(funtab+i, d, s, n, n / 2);
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}
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for (; n < LEN; n *= 2) {
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test(funtab+i, d, s, n, 0);
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test(funtab+i, d, s, n, n / 2);
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}
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}
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printf("%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
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if (test_status)
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r = -1;
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}
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return r;
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}
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