1 /* 2 * memset test. 3 * 4 * Copyright (c) 2019-2023, 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 *s, int c, size_t n); 22 int test_mte; 23 } funtab[] = { 24 // clang-format off 25 F(memset, 0) 26 #if __aarch64__ 27 F(__memset_aarch64, 1) 28 # if __ARM_FEATURE_SVE 29 F(__memset_aarch64_sve, 1) 30 # endif 31 # if WANT_MOPS 32 F(__memset_aarch64_mops, 1) 33 # endif 34 #elif __arm__ 35 F(__memset_arm, 0) 36 #endif 37 {0, 0, 0} 38 // clang-format on 39 }; 40 #undef F 41 42 #define A 32 43 #define LEN 250000 44 static unsigned char *sbuf; 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 salign, int c, int len) 54 { 55 unsigned char *src = alignup (sbuf); 56 unsigned char *s = src + salign; 57 void *p; 58 int i; 59 60 if (err_count >= ERR_LIMIT) 61 return; 62 if (len > LEN || salign >= A) 63 abort (); 64 for (i = 0; i < len + A; i++) 65 src[i] = '?'; 66 for (i = 0; i < len; i++) 67 s[i] = 'a' + i % 23; 68 69 s = tag_buffer (s, len, fun->test_mte); 70 p = fun->fun (s, c, len); 71 untag_buffer (s, len, fun->test_mte); 72 73 if (p != s) 74 ERR ("%s(%p,..) returned %p\n", fun->name, s, p); 75 76 for (i = 0; i < salign; i++) 77 { 78 if (src[i] != '?') 79 { 80 ERR ("%s(align %d, %d, %d) failed\n", fun->name, salign, c, len); 81 quoteat ("got", src, len + A, i); 82 return; 83 } 84 } 85 for (; i < salign + len; i++) 86 { 87 if (src[i] != (unsigned char) c) 88 { 89 ERR ("%s(align %d, %d, %d) failed\n", fun->name, salign, c, len); 90 quoteat ("got", src, len + A, i); 91 return; 92 } 93 } 94 for (; i < len + A; i++) 95 { 96 if (src[i] != '?') 97 { 98 ERR ("%s(align %d, %d, %d) failed\n", fun->name, salign, c, len); 99 quoteat ("got", src, len + A, i); 100 return; 101 } 102 } 103 } 104 105 int 106 main () 107 { 108 sbuf = mte_mmap (LEN + 2 * A); 109 int r = 0; 110 for (int i = 0; funtab[i].name; i++) 111 { 112 err_count = 0; 113 for (int s = 0; s < A; s++) 114 { 115 int n; 116 for (n = 0; n < 100; n++) 117 { 118 test (funtab + i, s, 0, n); 119 test (funtab + i, s, 0x25, n); 120 test (funtab + i, s, 0xaa25, n); 121 } 122 for (; n < LEN; n *= 2) 123 { 124 test (funtab + i, s, 0, n); 125 test (funtab + i, s, 0x25, n); 126 test (funtab + i, s, 0xaa25, n); 127 } 128 } 129 char *pass = funtab[i].test_mte && mte_enabled () ? "MTE PASS" : "PASS"; 130 printf ("%s %s\n", err_count ? "FAIL" : pass, funtab[i].name); 131 if (err_count) 132 r = -1; 133 } 134 return r; 135 } 136