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 * 47 alignup (void *p) 48 { 49 return (void *) (((uintptr_t) p + A - 1) & -A); 50 } 51 52 static void 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 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 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