1 /*
2 * memmove test.
3 *
4 * Copyright (c) 2019-2022, Arm Limited.
5 * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
6 */
7
8 #include <stdint.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include "mte.h"
13 #include "stringlib.h"
14 #include "stringtest.h"
15
16 #define F(x, mte) {#x, x, mte},
17
18 static const struct fun
19 {
20 const char *name;
21 void *(*fun) (void *, const void *, size_t);
22 int test_mte;
23 } funtab[] = {
24 // clang-format off
25 F(memmove, 0)
26 #if __aarch64__
27 F(__memmove_aarch64, 1)
28 # if __ARM_NEON
29 F(__memmove_aarch64_simd, 1)
30 # endif
31 # if __ARM_FEATURE_SVE
32 F(__memmove_aarch64_sve, 1)
33 # endif
34 #endif
35 {0, 0, 0}
36 // clang-format on
37 };
38 #undef F
39
40 #define A 32
41 #define LEN 250000
42 static unsigned char *dbuf;
43 static unsigned char *sbuf;
44 static unsigned char wbuf[LEN + 2 * A];
45
46 static void *
alignup(void * p)47 alignup (void *p)
48 {
49 return (void *) (((uintptr_t) p + A - 1) & -A);
50 }
51
52 static void
test(const struct fun * fun,int dalign,int salign,int len)53 test (const struct fun *fun, int dalign, int salign, int len)
54 {
55 unsigned char *src = alignup (sbuf);
56 unsigned char *dst = alignup (dbuf);
57 unsigned char *want = wbuf;
58 unsigned char *s = src + salign;
59 unsigned char *d = dst + dalign;
60 unsigned char *w = want + dalign;
61 void *p;
62 int i;
63
64 if (err_count >= ERR_LIMIT)
65 return;
66 if (len > LEN || dalign >= A || salign >= A)
67 abort ();
68 for (i = 0; i < len + A; i++)
69 {
70 src[i] = '?';
71 want[i] = dst[i] = '*';
72 }
73 for (i = 0; i < len; i++)
74 s[i] = w[i] = 'a' + i % 23;
75
76 p = fun->fun (d, s, len);
77 if (p != d)
78 ERR ("%s(%p,..) returned %p\n", fun->name, d, p);
79 for (i = 0; i < len + A; i++)
80 {
81 if (dst[i] != want[i])
82 {
83 ERR ("%s(align %d, align %d, %d) failed\n", fun->name, dalign, salign,
84 len);
85 quoteat ("got", dst, len + A, i);
86 quoteat ("want", want, len + A, i);
87 break;
88 }
89 }
90 }
91
92 static void
test_overlap(const struct fun * fun,int dalign,int salign,int len)93 test_overlap (const struct fun *fun, int dalign, int salign, int len)
94 {
95 unsigned char *src = alignup (sbuf);
96 unsigned char *dst = src;
97 unsigned char *want = wbuf;
98 unsigned char *s = src + salign;
99 unsigned char *d = dst + dalign;
100 unsigned char *w = wbuf + dalign;
101 void *p;
102
103 if (err_count >= ERR_LIMIT)
104 return;
105 if (len > LEN || dalign >= A || salign >= A)
106 abort ();
107
108 for (int i = 0; i < len + A; i++)
109 src[i] = want[i] = '?';
110
111 for (int i = 0; i < len; i++)
112 s[i] = want[salign + i] = 'a' + i % 23;
113 for (int i = 0; i < len; i++)
114 w[i] = s[i];
115
116 s = tag_buffer (s, len, fun->test_mte);
117 d = tag_buffer (d, len, fun->test_mte);
118 p = fun->fun (d, s, len);
119 untag_buffer (s, len, fun->test_mte);
120 untag_buffer (d, len, fun->test_mte);
121
122 if (p != d)
123 ERR ("%s(%p,..) returned %p\n", fun->name, d, p);
124 for (int i = 0; i < len + A; i++)
125 {
126 if (dst[i] != want[i])
127 {
128 ERR ("%s(align %d, align %d, %d) failed\n", fun->name, dalign, salign,
129 len);
130 quoteat ("got", dst, len + A, i);
131 quoteat ("want", want, len + A, i);
132 break;
133 }
134 }
135 }
136
137 int
main()138 main ()
139 {
140 dbuf = mte_mmap (LEN + 2 * A);
141 sbuf = mte_mmap (LEN + 2 * A);
142 int r = 0;
143 for (int i = 0; funtab[i].name; i++)
144 {
145 err_count = 0;
146 for (int d = 0; d < A; d++)
147 for (int s = 0; s < A; s++)
148 {
149 int n;
150 for (n = 0; n < 100; n++)
151 {
152 test (funtab + i, d, s, n);
153 test_overlap (funtab + i, d, s, n);
154 }
155 for (; n < LEN; n *= 2)
156 {
157 test (funtab + i, d, s, n);
158 test_overlap (funtab + i, d, s, n);
159 }
160 }
161 char *pass = funtab[i].test_mte && mte_enabled () ? "MTE PASS" : "PASS";
162 printf ("%s %s\n", err_count ? "FAIL" : pass, funtab[i].name);
163 if (err_count)
164 r = -1;
165 }
166 return r;
167 }
168