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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