1 /* 2 * stpcpy test. 3 * 4 * Copyright (c) 2019-2022, Arm Limited. 5 * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception 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, 1) 32 # if __ARM_FEATURE_SVE 33 F(__stpcpy_aarch64_sve, 1) 34 # endif 35 #endif 36 {0, 0, 0} 37 // clang-format on 38 }; 39 #undef F 40 41 #define ALIGN 32 42 #define LEN 512 43 static char *dbuf; 44 static char *sbuf; 45 static char wbuf[LEN + 3 * ALIGN]; 46 47 static void * 48 alignup (void *p) 49 { 50 return (void *) (((uintptr_t) p + ALIGN - 1) & -ALIGN); 51 } 52 53 static void 54 test (const struct fun *fun, int dalign, int salign, int len) 55 { 56 char *src = alignup (sbuf); 57 char *dst = alignup (dbuf); 58 char *want = wbuf; 59 char *s = src + salign; 60 char *d = dst + dalign; 61 char *w = want + dalign; 62 void *p; 63 int i; 64 65 if (err_count >= ERR_LIMIT) 66 return; 67 if (len > LEN || dalign >= ALIGN || salign >= ALIGN) 68 abort (); 69 for (i = 0; i < len + ALIGN; i++) 70 { 71 src[i] = '?'; 72 want[i] = dst[i] = '*'; 73 } 74 for (int i = 0; src + i < s; i++) 75 src[i] = 0; 76 for (int i = 1; i <= ALIGN; i++) 77 s[len + i] = (len + salign) & 1 ? 1 : 0; 78 for (i = 0; i < len; i++) 79 s[i] = w[i] = 'a' + (i & 31); 80 s[len] = w[len] = '\0'; 81 82 s = tag_buffer (s, len + 1, fun->test_mte); 83 d = tag_buffer (d, len + 1, fun->test_mte); 84 p = fun->fun (d, s); 85 untag_buffer (s, len + 1, fun->test_mte); 86 untag_buffer (d, len + 1, fun->test_mte); 87 88 if (p != d + len) 89 ERR ("%s (%p,..) returned %p expected %p\n", fun->name, d, p, d + len); 90 91 for (i = 0; i < len + ALIGN; i++) 92 { 93 if (dst[i] != want[i]) 94 { 95 ERR ("%s (align %d, align %d, %d) failed\n", 96 fun->name, dalign, salign, len); 97 quoteat ("got", dst, len + ALIGN, i); 98 quoteat ("want", want, len + ALIGN, i); 99 break; 100 } 101 } 102 } 103 104 int 105 main (void) 106 { 107 sbuf = mte_mmap (LEN + 3 * ALIGN); 108 dbuf = mte_mmap (LEN + 3 * ALIGN); 109 int r = 0; 110 for (int i = 0; funtab[i].name; i++) 111 { 112 err_count = 0; 113 for (int d = 0; d < ALIGN; d++) 114 for (int s = 0; s < ALIGN; s++) 115 for (int n = 0; n < LEN; n++) 116 test (funtab + i, d, s, n); 117 118 char *pass = funtab[i].test_mte && mte_enabled () ? "MTE PASS" : "PASS"; 119 printf ("%s %s\n", err_count ? "FAIL" : pass, funtab[i].name); 120 if (err_count) 121 r = -1; 122 } 123 return r; 124 } 125