1 /* 2 * memcpy test. 3 * 4 * Copyright (c) 2019-2020, Arm Limited. 5 * SPDX-License-Identifier: MIT 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(memcpy, 0) 26 #if __aarch64__ 27 F(__memcpy_aarch64, 1) 28 # if __ARM_NEON 29 F(__memcpy_aarch64_simd, 1) 30 # endif 31 #elif __arm__ 32 F(__memcpy_arm, 0) 33 #endif 34 {0, 0, 0} 35 // clang-format on 36 }; 37 #undef F 38 39 #define A 32 40 #define LEN 250000 41 static unsigned char *dbuf; 42 static unsigned char *sbuf; 43 static unsigned char wbuf[LEN + 2 * A]; 44 45 static void * 46 alignup (void *p) 47 { 48 return (void *) (((uintptr_t) p + A - 1) & -A); 49 } 50 51 static void 52 test (const struct fun *fun, int dalign, int salign, int len) 53 { 54 unsigned char *src = alignup (sbuf); 55 unsigned char *dst = alignup (dbuf); 56 unsigned char *want = wbuf; 57 unsigned char *s = src + salign; 58 unsigned char *d = dst + dalign; 59 unsigned char *w = want + dalign; 60 void *p; 61 int i; 62 63 if (err_count >= ERR_LIMIT) 64 return; 65 if (len > LEN || dalign >= A || salign >= A) 66 abort (); 67 for (i = 0; i < len + A; i++) 68 { 69 src[i] = '?'; 70 want[i] = dst[i] = '*'; 71 } 72 for (i = 0; i < len; i++) 73 s[i] = w[i] = 'a' + i % 23; 74 75 s = tag_buffer (s, len, fun->test_mte); 76 d = tag_buffer (d, len, fun->test_mte); 77 p = fun->fun (d, s, len); 78 untag_buffer (s, len, fun->test_mte); 79 untag_buffer (d, len, fun->test_mte); 80 81 if (p != d) 82 ERR ("%s(%p,..) returned %p\n", fun->name, d, p); 83 for (i = 0; i < len + A; i++) 84 { 85 if (dst[i] != want[i]) 86 { 87 ERR ("%s(align %d, align %d, %d) failed\n", fun->name, dalign, salign, 88 len); 89 quoteat ("got", dst, len + A, i); 90 quoteat ("want", want, len + A, i); 91 break; 92 } 93 } 94 } 95 96 int 97 main () 98 { 99 dbuf = mte_mmap (LEN + 2 * A); 100 sbuf = mte_mmap (LEN + 2 * A); 101 int r = 0; 102 for (int i = 0; funtab[i].name; i++) 103 { 104 err_count = 0; 105 for (int d = 0; d < A; d++) 106 for (int s = 0; s < A; s++) 107 { 108 int n; 109 for (n = 0; n < 100; n++) 110 test (funtab + i, d, s, n); 111 for (; n < LEN; n *= 2) 112 test (funtab + i, d, s, n); 113 } 114 char *pass = funtab[i].test_mte && mte_enabled () ? "MTE PASS" : "PASS"; 115 printf ("%s %s\n", err_count ? "FAIL" : pass, funtab[i].name); 116 if (err_count) 117 r = -1; 118 } 119 return r; 120 } 121