[444] | 1 | /* |
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| 2 | * Copyright (c) 2011 ARM Ltd |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 3. The name of the company may not be used to endorse or promote |
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| 14 | * products derived from this software without specific prior written |
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| 15 | * permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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| 18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 21 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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| 22 | * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 23 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 24 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 25 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 26 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |
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| 29 | #include <string.h> |
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| 30 | #include <stdlib.h> |
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| 31 | #include <stdio.h> |
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| 32 | #include <stdarg.h> |
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| 33 | |
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| 34 | #ifndef BUFF_SIZE |
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| 35 | #define BUFF_SIZE 1024 |
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| 36 | #endif |
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| 37 | |
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| 38 | #ifndef START_COPY |
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| 39 | #define START_COPY 256 |
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| 40 | #endif |
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| 41 | |
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| 42 | #ifndef MAX_BLOCK_SIZE |
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| 43 | #define MAX_BLOCK_SIZE 128 |
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| 44 | #endif |
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| 45 | |
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| 46 | #ifndef MAX_OFFSET |
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| 47 | #define MAX_OFFSET 3 |
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| 48 | #endif |
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| 49 | |
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| 50 | #if (START_COPY + MAX_OFFSET + MAX_BLOCK_SIZE >= BUFF_SIZE) |
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| 51 | #error "Buffer overrun: START_COPY + MAX_OFFSET + MAX_BLOCK_SIZE >= BUFF_SIZE." |
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| 52 | #endif |
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| 53 | |
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| 54 | #define TOO_MANY_ERRORS 11 |
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| 55 | int errors = 0; |
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| 56 | |
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| 57 | void |
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| 58 | print_error (char const* msg, ...) |
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| 59 | { |
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| 60 | errors++; |
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| 61 | if (errors == TOO_MANY_ERRORS) |
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| 62 | { |
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| 63 | fprintf (stderr, "Too many errors.\n"); |
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| 64 | } |
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| 65 | else if (errors < TOO_MANY_ERRORS) |
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| 66 | { |
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| 67 | va_list ap; |
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| 68 | va_start (ap, msg); |
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| 69 | vfprintf (stderr, msg, ap); |
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| 70 | va_end (ap); |
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| 71 | } |
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| 72 | else |
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| 73 | { |
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| 74 | /* Further errors omitted. */ |
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| 75 | } |
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| 76 | } |
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| 77 | |
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| 78 | int |
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| 79 | main (void) |
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| 80 | { |
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| 81 | /* Allocate buffers to read and write from. */ |
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| 82 | char src[BUFF_SIZE], dest[BUFF_SIZE], backup_src[BUFF_SIZE]; |
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| 83 | |
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| 84 | /* Fill the source buffer with non-null values, reproducable random data. */ |
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| 85 | srand (1539); |
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| 86 | int i, j; |
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| 87 | unsigned sa; |
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| 88 | unsigned da; |
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| 89 | unsigned n; |
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| 90 | for (i = 0; i < BUFF_SIZE; i++) |
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| 91 | { |
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| 92 | src[i] = (char)rand () | 1; |
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| 93 | backup_src[i] = src[i]; |
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| 94 | } |
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| 95 | |
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| 96 | /* Make calls to memcpy with block sizes ranging between 1 and |
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| 97 | MAX_BLOCK_SIZE bytes, aligned and misaligned source and destination. */ |
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| 98 | for (sa = 0; sa <= MAX_OFFSET; sa++) |
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| 99 | for (da = 0; da <= MAX_OFFSET; da++) |
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| 100 | for (n = 1; n <= MAX_BLOCK_SIZE; n++) |
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| 101 | { |
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| 102 | printf ("."); |
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| 103 | /* Zero dest so we can check it properly after the copying. */ |
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| 104 | for (j = 0; j < BUFF_SIZE; j++) |
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| 105 | dest[j] = 0; |
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| 106 | |
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| 107 | void *ret = memcpy (dest + START_COPY + da, src + sa, n); |
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| 108 | |
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| 109 | /* Check return value. */ |
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| 110 | if (ret != (dest + START_COPY + da)) |
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| 111 | print_error ("\nFailed: wrong return value in memcpy of %u bytes " |
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| 112 | "with src_align %u and dst_align %u. " |
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| 113 | "Return value and dest should be the same" |
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| 114 | "(ret is %p, dest is %p)\n", |
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| 115 | n, sa, da, ret, dest + START_COPY + da); |
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| 116 | |
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| 117 | /* Check that content of the destination buffer |
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| 118 | is the same as the source buffer, and |
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| 119 | memory outside destination buffer is not modified. */ |
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| 120 | for (j = 0; j < BUFF_SIZE; j++) |
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| 121 | if (j < START_COPY + da) |
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| 122 | { |
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| 123 | if (dest[j] != 0) |
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| 124 | print_error ("\nFailed: after memcpy of %u bytes " |
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| 125 | "with src_align %u and dst_align %u, " |
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| 126 | "byte %u before the start of dest is not 0.\n", |
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| 127 | n, sa, da, START_COPY - j); |
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| 128 | } |
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| 129 | else if (j < START_COPY + da + n) |
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| 130 | { |
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| 131 | i = j - START_COPY - da; |
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| 132 | if (dest[j] != (src + sa)[i]) |
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| 133 | print_error ("\nFailed: after memcpy of %u bytes " |
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| 134 | "with src_align %u and dst_align %u, " |
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| 135 | "byte %u in dest and src are not the same.\n", |
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| 136 | n, sa, da, i); |
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| 137 | } |
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| 138 | else if (dest[j] != 0) |
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| 139 | { |
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| 140 | print_error ("\nFailed: after memcpy of %u bytes " |
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| 141 | "with src_align %u and dst_align %u, " |
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| 142 | "byte %u after the end of dest is not 0.\n", |
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| 143 | n, sa, da, j - START_COPY - da - n); |
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| 144 | } |
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| 145 | |
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| 146 | /* Check src is not modified. */ |
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| 147 | for (j = 0; j < BUFF_SIZE; j++) |
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| 148 | if (src[i] != backup_src[i]) |
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| 149 | print_error ("\nFailed: after memcpy of %u bytes " |
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| 150 | "with src_align %u and dst_align %u, " |
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| 151 | "byte %u of src is modified.\n", |
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| 152 | n, sa, da, j); |
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| 153 | } |
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| 154 | |
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| 155 | printf ("\n"); |
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| 156 | if (errors != 0) |
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| 157 | abort (); |
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| 158 | |
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| 159 | exit (0); |
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| 160 | } |
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