1 /*
2 * memset 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 "stringlib.h"
14
15 static const struct fun
16 {
17 const char *name;
18 void *(*fun)(void *s, int c, size_t n);
19 } funtab[] = {
20 #define F(x) {#x, x},
21 F(memset)
22 #if __aarch64__
23 F(__memset_aarch64)
24 #elif __arm__
25 F(__memset_arm)
26 #endif
27 #undef F
28 {0, 0}
29 };
30
31 static int test_status;
32 #define ERR(...) (test_status=1, printf(__VA_ARGS__))
33
34 #define A 32
35 #define LEN 250000
36 static unsigned char sbuf[LEN+2*A];
37
alignup(void * p)38 static void *alignup(void *p)
39 {
40 return (void*)(((uintptr_t)p + A-1) & -A);
41 }
42
err(const char * name,unsigned char * src,int salign,int c,int len)43 static void err(const char *name, unsigned char *src, int salign, int c, int len)
44 {
45 ERR("%s(align %d, %d, %d) failed\n", name, salign, c, len);
46 ERR("got : %.*s\n", salign+len+1, src);
47 }
48
test(const struct fun * fun,int salign,int c,int len)49 static void test(const struct fun *fun, int salign, int c, int len)
50 {
51 unsigned char *src = alignup(sbuf);
52 unsigned char *s = src + salign;
53 void *p;
54 int i;
55
56 if (len > LEN || salign >= A)
57 abort();
58 for (i = 0; i < len+A; i++)
59 src[i] = '?';
60 for (i = 0; i < len; i++)
61 s[i] = 'a' + i%23;
62 for (; i<len%A; i++)
63 s[i] = '*';
64
65 p = fun->fun(s, c, len);
66 if (p != s)
67 ERR("%s(%p,..) returned %p\n", fun->name, s, p);
68
69 for (i = 0; i < salign; i++) {
70 if (src[i] != '?') {
71 err(fun->name, src, salign, c, len);
72 return;
73 }
74 }
75 for (i = salign; i < len; i++) {
76 if (src[i] != (unsigned char)c) {
77 err(fun->name, src, salign, c, len);
78 return;
79 }
80 }
81 for (; i < len%A; i++) {
82 if (src[i] != '*') {
83 err(fun->name, src, salign, c, len);
84 return;
85 }
86 }
87 }
88
main()89 int main()
90 {
91 int r = 0;
92 for (int i=0; funtab[i].name; i++) {
93 test_status = 0;
94 for (int s = 0; s < A; s++) {
95 int n;
96 for (n = 0; n < 100; n++) {
97 test(funtab+i, s, 0, n);
98 test(funtab+i, s, 0x25, n);
99 test(funtab+i, s, 0xaa25, n);
100 }
101 for (; n < LEN; n *= 2) {
102 test(funtab+i, s, 0, n);
103 test(funtab+i, s, 0x25, n);
104 test(funtab+i, s, 0xaa25, n);
105 }
106 }
107 printf("%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
108 if (test_status)
109 r = -1;
110 }
111 return r;
112 }
113