1 /* 2 * stpcpy test. 3 * 4 * Copyright (c) 2019-2020, Arm Limited. 5 * SPDX-License-Identifier: MIT 6 */ 7 8 #ifndef _GNU_SOURCE 9 #define _GNU_SOURCE 10 #endif 11 12 #include <stdint.h> 13 #include <stdio.h> 14 #include <stdlib.h> 15 #include <string.h> 16 #include "mte.h" 17 #include "stringlib.h" 18 #include "stringtest.h" 19 20 #define F(x, mte) {#x, x, mte}, 21 22 static const struct fun 23 { 24 const char *name; 25 char *(*fun) (char *dest, const char *src); 26 int test_mte; 27 } funtab[] = { 28 // clang-format off 29 F(stpcpy, 0) 30 #if __aarch64__ 31 F(__stpcpy_aarch64, 0) 32 F(__stpcpy_aarch64_mte, 1) 33 # if __ARM_FEATURE_SVE 34 F(__stpcpy_aarch64_sve, 1) 35 # endif 36 #endif 37 {0, 0, 0} 38 // clang-format on 39 }; 40 #undef F 41 42 #define ALIGN 32 43 #define LEN 512 44 static char *dbuf; 45 static char *sbuf; 46 static char wbuf[LEN + 3 * ALIGN]; 47 48 static void * 49 alignup (void *p) 50 { 51 return (void *) (((uintptr_t) p + ALIGN - 1) & -ALIGN); 52 } 53 54 static void 55 test (const struct fun *fun, int dalign, int salign, int len) 56 { 57 char *src = alignup (sbuf); 58 char *dst = alignup (dbuf); 59 char *want = wbuf; 60 char *s = src + salign; 61 char *d = dst + dalign; 62 char *w = want + dalign; 63 void *p; 64 int i; 65 66 if (err_count >= ERR_LIMIT) 67 return; 68 if (len > LEN || dalign >= ALIGN || salign >= ALIGN) 69 abort (); 70 for (i = 0; i < len + ALIGN; i++) 71 { 72 src[i] = '?'; 73 want[i] = dst[i] = '*'; 74 } 75 for (int i = 0; src + i < s; i++) 76 src[i] = 0; 77 for (int i = 1; i <= ALIGN; i++) 78 s[len + i] = (len + salign) & 1 ? 1 : 0; 79 for (i = 0; i < len; i++) 80 s[i] = w[i] = 'a' + (i & 31); 81 s[len] = w[len] = '\0'; 82 83 s = tag_buffer (s, len + 1, fun->test_mte); 84 d = tag_buffer (d, len + 1, fun->test_mte); 85 p = fun->fun (d, s); 86 untag_buffer (s, len + 1, fun->test_mte); 87 untag_buffer (d, len + 1, fun->test_mte); 88 89 if (p != d + len) 90 ERR ("%s (%p,..) returned %p expected %p\n", fun->name, d, p, d + len); 91 92 for (i = 0; i < len + ALIGN; i++) 93 { 94 if (dst[i] != want[i]) 95 { 96 ERR ("%s (align %d, align %d, %d) failed\n", 97 fun->name, dalign, salign, len); 98 quoteat ("got", dst, len + ALIGN, i); 99 quoteat ("want", want, len + ALIGN, i); 100 break; 101 } 102 } 103 } 104 105 int 106 main (void) 107 { 108 sbuf = mte_mmap (LEN + 3 * ALIGN); 109 dbuf = mte_mmap (LEN + 3 * ALIGN); 110 int r = 0; 111 for (int i = 0; funtab[i].name; i++) 112 { 113 err_count = 0; 114 for (int d = 0; d < ALIGN; d++) 115 for (int s = 0; s < ALIGN; s++) 116 for (int n = 0; n < LEN; n++) 117 test (funtab + i, d, s, n); 118 119 char *pass = funtab[i].test_mte && mte_enabled () ? "MTE PASS" : "PASS"; 120 printf ("%s %s\n", err_count ? "FAIL" : pass, funtab[i].name); 121 if (err_count) 122 r = -1; 123 } 124 return r; 125 } 126