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Commit | Line | Data |
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e1f414b6 | 1 | /** @file\r |
2 | Utility functions to generate checksum based on 2's complement\r | |
3 | algorithm.\r | |
4 | \r | |
9095d37b | 5 | Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r |
9344f092 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
e1f414b6 | 7 | \r |
e1f414b6 | 8 | **/\r |
9 | \r | |
47fc17d8 | 10 | #include "BaseLibInternals.h"\r |
f734a10a | 11 | \r |
e1f414b6 | 12 | /**\r |
9aa049d9 | 13 | Returns the sum of all elements in a buffer in unit of UINT8.\r |
e1f414b6 | 14 | During calculation, the carry bits are dropped.\r |
15 | \r | |
9aa049d9 | 16 | This function calculates the sum of all elements in a buffer\r |
17 | in unit of UINT8. The carry bits in result of addition are dropped.\r | |
18 | The result is returned as UINT8. If Length is Zero, then Zero is\r | |
e1f414b6 | 19 | returned.\r |
9aa049d9 | 20 | \r |
e1f414b6 | 21 | If Buffer is NULL, then ASSERT().\r |
9aa049d9 | 22 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
e1f414b6 | 23 | \r |
127010dd | 24 | @param Buffer The pointer to the buffer to carry out the sum operation.\r |
9aa049d9 | 25 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 26 | \r |
9aa049d9 | 27 | @return Sum The sum of Buffer with carry bits dropped during additions.\r |
e1f414b6 | 28 | \r |
29 | **/\r | |
30 | UINT8\r | |
31 | EFIAPI\r | |
32 | CalculateSum8 (\r | |
2fc60b70 | 33 | IN CONST UINT8 *Buffer,\r |
34 | IN UINTN Length\r | |
e1f414b6 | 35 | )\r |
36 | {\r | |
37 | UINT8 Sum;\r | |
38 | UINTN Count;\r | |
39 | \r | |
40 | ASSERT (Buffer != NULL);\r | |
41 | ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));\r | |
42 | \r | |
43 | for (Sum = 0, Count = 0; Count < Length; Count++) {\r | |
44 | Sum = (UINT8) (Sum + *(Buffer + Count));\r | |
45 | }\r | |
9095d37b | 46 | \r |
e1f414b6 | 47 | return Sum;\r |
48 | }\r | |
49 | \r | |
50 | \r | |
51 | /**\r | |
9aa049d9 | 52 | Returns the two's complement checksum of all elements in a buffer\r |
e1f414b6 | 53 | of 8-bit values.\r |
54 | \r | |
9aa049d9 | 55 | This function first calculates the sum of the 8-bit values in the\r |
56 | buffer specified by Buffer and Length. The carry bits in the result\r | |
57 | of addition are dropped. Then, the two's complement of the sum is\r | |
e1f414b6 | 58 | returned. If Length is 0, then 0 is returned.\r |
9aa049d9 | 59 | \r |
e1f414b6 | 60 | If Buffer is NULL, then ASSERT().\r |
61 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
62 | \r | |
127010dd | 63 | @param Buffer The pointer to the buffer to carry out the checksum operation.\r |
1106ffe1 | 64 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 65 | \r |
9aa049d9 | 66 | @return Checksum The 2's complement checksum of Buffer.\r |
e1f414b6 | 67 | \r |
68 | **/\r | |
69 | UINT8\r | |
70 | EFIAPI\r | |
71 | CalculateCheckSum8 (\r | |
2fc60b70 | 72 | IN CONST UINT8 *Buffer,\r |
73 | IN UINTN Length\r | |
e1f414b6 | 74 | )\r |
75 | {\r | |
76 | UINT8 CheckSum;\r | |
77 | \r | |
78 | CheckSum = CalculateSum8 (Buffer, Length);\r | |
79 | \r | |
80 | //\r | |
81 | // Return the checksum based on 2's complement.\r | |
82 | //\r | |
83 | return (UINT8) (0x100 - CheckSum);\r | |
84 | }\r | |
85 | \r | |
86 | /**\r | |
9aa049d9 | 87 | Returns the sum of all elements in a buffer of 16-bit values. During\r |
e1f414b6 | 88 | calculation, the carry bits are dropped.\r |
89 | \r | |
9aa049d9 | 90 | This function calculates the sum of the 16-bit values in the buffer\r |
91 | specified by Buffer and Length. The carry bits in result of addition are dropped.\r | |
92 | The 16-bit result is returned. If Length is 0, then 0 is returned.\r | |
93 | \r | |
e1f414b6 | 94 | If Buffer is NULL, then ASSERT().\r |
95 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
96 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r | |
97 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
98 | \r | |
127010dd | 99 | @param Buffer The pointer to the buffer to carry out the sum operation.\r |
1106ffe1 | 100 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 101 | \r |
9aa049d9 | 102 | @return Sum The sum of Buffer with carry bits dropped during additions.\r |
e1f414b6 | 103 | \r |
104 | **/\r | |
105 | UINT16\r | |
106 | EFIAPI\r | |
107 | CalculateSum16 (\r | |
2fc60b70 | 108 | IN CONST UINT16 *Buffer,\r |
109 | IN UINTN Length\r | |
e1f414b6 | 110 | )\r |
111 | {\r | |
112 | UINT16 Sum;\r | |
113 | UINTN Count;\r | |
f9cea76b | 114 | UINTN Total;\r |
e1f414b6 | 115 | \r |
116 | ASSERT (Buffer != NULL);\r | |
117 | ASSERT (((UINTN) Buffer & 0x1) == 0);\r | |
118 | ASSERT ((Length & 0x1) == 0);\r | |
119 | ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));\r | |
120 | \r | |
f9cea76b | 121 | Total = Length / sizeof (*Buffer);\r |
122 | for (Sum = 0, Count = 0; Count < Total; Count++) {\r | |
e1f414b6 | 123 | Sum = (UINT16) (Sum + *(Buffer + Count));\r |
124 | }\r | |
9095d37b | 125 | \r |
e1f414b6 | 126 | return Sum;\r |
127 | }\r | |
128 | \r | |
129 | \r | |
130 | /**\r | |
9aa049d9 | 131 | Returns the two's complement checksum of all elements in a buffer of\r |
e1f414b6 | 132 | 16-bit values.\r |
133 | \r | |
9aa049d9 | 134 | This function first calculates the sum of the 16-bit values in the buffer\r |
135 | specified by Buffer and Length. The carry bits in the result of addition\r | |
136 | are dropped. Then, the two's complement of the sum is returned. If Length\r | |
e1f414b6 | 137 | is 0, then 0 is returned.\r |
9aa049d9 | 138 | \r |
e1f414b6 | 139 | If Buffer is NULL, then ASSERT().\r |
140 | If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r | |
141 | If Length is not aligned on a 16-bit boundary, then ASSERT().\r | |
9aa049d9 | 142 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
e1f414b6 | 143 | \r |
127010dd | 144 | @param Buffer The pointer to the buffer to carry out the checksum operation.\r |
1106ffe1 | 145 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 146 | \r |
9aa049d9 | 147 | @return Checksum The 2's complement checksum of Buffer.\r |
e1f414b6 | 148 | \r |
149 | **/\r | |
150 | UINT16\r | |
151 | EFIAPI\r | |
152 | CalculateCheckSum16 (\r | |
2fc60b70 | 153 | IN CONST UINT16 *Buffer,\r |
154 | IN UINTN Length\r | |
e1f414b6 | 155 | )\r |
156 | {\r | |
157 | UINT16 CheckSum;\r | |
158 | \r | |
159 | CheckSum = CalculateSum16 (Buffer, Length);\r | |
160 | \r | |
161 | //\r | |
162 | // Return the checksum based on 2's complement.\r | |
163 | //\r | |
164 | return (UINT16) (0x10000 - CheckSum);\r | |
165 | }\r | |
166 | \r | |
167 | \r | |
168 | /**\r | |
9aa049d9 | 169 | Returns the sum of all elements in a buffer of 32-bit values. During\r |
e1f414b6 | 170 | calculation, the carry bits are dropped.\r |
171 | \r | |
9aa049d9 | 172 | This function calculates the sum of the 32-bit values in the buffer\r |
173 | specified by Buffer and Length. The carry bits in result of addition are dropped.\r | |
174 | The 32-bit result is returned. If Length is 0, then 0 is returned.\r | |
175 | \r | |
e1f414b6 | 176 | If Buffer is NULL, then ASSERT().\r |
177 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
178 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r | |
179 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
180 | \r | |
127010dd | 181 | @param Buffer The pointer to the buffer to carry out the sum operation.\r |
1106ffe1 | 182 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 183 | \r |
9aa049d9 | 184 | @return Sum The sum of Buffer with carry bits dropped during additions.\r |
e1f414b6 | 185 | \r |
186 | **/\r | |
187 | UINT32\r | |
188 | EFIAPI\r | |
189 | CalculateSum32 (\r | |
2fc60b70 | 190 | IN CONST UINT32 *Buffer,\r |
191 | IN UINTN Length\r | |
e1f414b6 | 192 | )\r |
193 | {\r | |
194 | UINT32 Sum;\r | |
195 | UINTN Count;\r | |
f9cea76b | 196 | UINTN Total;\r |
e1f414b6 | 197 | \r |
198 | ASSERT (Buffer != NULL);\r | |
199 | ASSERT (((UINTN) Buffer & 0x3) == 0);\r | |
200 | ASSERT ((Length & 0x3) == 0);\r | |
201 | ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));\r | |
202 | \r | |
f9cea76b | 203 | Total = Length / sizeof (*Buffer);\r |
204 | for (Sum = 0, Count = 0; Count < Total; Count++) {\r | |
e1f414b6 | 205 | Sum = Sum + *(Buffer + Count);\r |
206 | }\r | |
9095d37b | 207 | \r |
e1f414b6 | 208 | return Sum;\r |
209 | }\r | |
210 | \r | |
211 | \r | |
212 | /**\r | |
9aa049d9 | 213 | Returns the two's complement checksum of all elements in a buffer of\r |
e1f414b6 | 214 | 32-bit values.\r |
215 | \r | |
9aa049d9 | 216 | This function first calculates the sum of the 32-bit values in the buffer\r |
217 | specified by Buffer and Length. The carry bits in the result of addition\r | |
218 | are dropped. Then, the two's complement of the sum is returned. If Length\r | |
e1f414b6 | 219 | is 0, then 0 is returned.\r |
9aa049d9 | 220 | \r |
e1f414b6 | 221 | If Buffer is NULL, then ASSERT().\r |
222 | If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r | |
223 | If Length is not aligned on a 32-bit boundary, then ASSERT().\r | |
9aa049d9 | 224 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
e1f414b6 | 225 | \r |
127010dd | 226 | @param Buffer The pointer to the buffer to carry out the checksum operation.\r |
1106ffe1 | 227 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 228 | \r |
9aa049d9 | 229 | @return Checksum The 2's complement checksum of Buffer.\r |
e1f414b6 | 230 | \r |
231 | **/\r | |
232 | UINT32\r | |
233 | EFIAPI\r | |
234 | CalculateCheckSum32 (\r | |
2fc60b70 | 235 | IN CONST UINT32 *Buffer,\r |
236 | IN UINTN Length\r | |
e1f414b6 | 237 | )\r |
238 | {\r | |
239 | UINT32 CheckSum;\r | |
240 | \r | |
241 | CheckSum = CalculateSum32 (Buffer, Length);\r | |
242 | \r | |
243 | //\r | |
244 | // Return the checksum based on 2's complement.\r | |
245 | //\r | |
246 | return (UINT32) ((UINT32)(-1) - CheckSum + 1);\r | |
247 | }\r | |
248 | \r | |
249 | \r | |
250 | /**\r | |
9aa049d9 | 251 | Returns the sum of all elements in a buffer of 64-bit values. During\r |
e1f414b6 | 252 | calculation, the carry bits are dropped.\r |
253 | \r | |
9aa049d9 | 254 | This function calculates the sum of the 64-bit values in the buffer\r |
255 | specified by Buffer and Length. The carry bits in result of addition are dropped.\r | |
256 | The 64-bit result is returned. If Length is 0, then 0 is returned.\r | |
257 | \r | |
e1f414b6 | 258 | If Buffer is NULL, then ASSERT().\r |
259 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
260 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r | |
261 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
262 | \r | |
127010dd | 263 | @param Buffer The pointer to the buffer to carry out the sum operation.\r |
1106ffe1 | 264 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 265 | \r |
9aa049d9 | 266 | @return Sum The sum of Buffer with carry bits dropped during additions.\r |
e1f414b6 | 267 | \r |
268 | **/\r | |
269 | UINT64\r | |
270 | EFIAPI\r | |
271 | CalculateSum64 (\r | |
2fc60b70 | 272 | IN CONST UINT64 *Buffer,\r |
273 | IN UINTN Length\r | |
e1f414b6 | 274 | )\r |
275 | {\r | |
276 | UINT64 Sum;\r | |
277 | UINTN Count;\r | |
f9cea76b | 278 | UINTN Total;\r |
e1f414b6 | 279 | \r |
280 | ASSERT (Buffer != NULL);\r | |
281 | ASSERT (((UINTN) Buffer & 0x7) == 0);\r | |
282 | ASSERT ((Length & 0x7) == 0);\r | |
283 | ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));\r | |
284 | \r | |
f9cea76b | 285 | Total = Length / sizeof (*Buffer);\r |
286 | for (Sum = 0, Count = 0; Count < Total; Count++) {\r | |
e1f414b6 | 287 | Sum = Sum + *(Buffer + Count);\r |
288 | }\r | |
9095d37b | 289 | \r |
e1f414b6 | 290 | return Sum;\r |
291 | }\r | |
292 | \r | |
293 | \r | |
294 | /**\r | |
9aa049d9 | 295 | Returns the two's complement checksum of all elements in a buffer of\r |
e1f414b6 | 296 | 64-bit values.\r |
297 | \r | |
9aa049d9 | 298 | This function first calculates the sum of the 64-bit values in the buffer\r |
299 | specified by Buffer and Length. The carry bits in the result of addition\r | |
300 | are dropped. Then, the two's complement of the sum is returned. If Length\r | |
e1f414b6 | 301 | is 0, then 0 is returned.\r |
9aa049d9 | 302 | \r |
e1f414b6 | 303 | If Buffer is NULL, then ASSERT().\r |
304 | If Buffer is not aligned on a 64-bit boundary, then ASSERT().\r | |
305 | If Length is not aligned on a 64-bit boundary, then ASSERT().\r | |
9aa049d9 | 306 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
e1f414b6 | 307 | \r |
127010dd | 308 | @param Buffer The pointer to the buffer to carry out the checksum operation.\r |
1106ffe1 | 309 | @param Length The size, in bytes, of Buffer.\r |
e1f414b6 | 310 | \r |
9aa049d9 | 311 | @return Checksum The 2's complement checksum of Buffer.\r |
e1f414b6 | 312 | \r |
313 | **/\r | |
314 | UINT64\r | |
315 | EFIAPI\r | |
316 | CalculateCheckSum64 (\r | |
2fc60b70 | 317 | IN CONST UINT64 *Buffer,\r |
318 | IN UINTN Length\r | |
e1f414b6 | 319 | )\r |
320 | {\r | |
321 | UINT64 CheckSum;\r | |
322 | \r | |
323 | CheckSum = CalculateSum64 (Buffer, Length);\r | |
324 | \r | |
325 | //\r | |
326 | // Return the checksum based on 2's complement.\r | |
327 | //\r | |
328 | return (UINT64) ((UINT64)(-1) - CheckSum + 1);\r | |
329 | }\r | |
330 | \r | |
0a8e6f79 LG |
331 | GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT32 mCrcTable[256] = {\r |
332 | 0x00000000,\r | |
333 | 0x77073096,\r | |
334 | 0xEE0E612C,\r | |
335 | 0x990951BA,\r | |
336 | 0x076DC419,\r | |
337 | 0x706AF48F,\r | |
338 | 0xE963A535,\r | |
339 | 0x9E6495A3,\r | |
340 | 0x0EDB8832,\r | |
341 | 0x79DCB8A4,\r | |
342 | 0xE0D5E91E,\r | |
343 | 0x97D2D988,\r | |
344 | 0x09B64C2B,\r | |
345 | 0x7EB17CBD,\r | |
346 | 0xE7B82D07,\r | |
347 | 0x90BF1D91,\r | |
348 | 0x1DB71064,\r | |
349 | 0x6AB020F2,\r | |
350 | 0xF3B97148,\r | |
351 | 0x84BE41DE,\r | |
352 | 0x1ADAD47D,\r | |
353 | 0x6DDDE4EB,\r | |
354 | 0xF4D4B551,\r | |
355 | 0x83D385C7,\r | |
356 | 0x136C9856,\r | |
357 | 0x646BA8C0,\r | |
358 | 0xFD62F97A,\r | |
359 | 0x8A65C9EC,\r | |
360 | 0x14015C4F,\r | |
361 | 0x63066CD9,\r | |
362 | 0xFA0F3D63,\r | |
363 | 0x8D080DF5,\r | |
364 | 0x3B6E20C8,\r | |
365 | 0x4C69105E,\r | |
366 | 0xD56041E4,\r | |
367 | 0xA2677172,\r | |
368 | 0x3C03E4D1,\r | |
369 | 0x4B04D447,\r | |
370 | 0xD20D85FD,\r | |
371 | 0xA50AB56B,\r | |
372 | 0x35B5A8FA,\r | |
373 | 0x42B2986C,\r | |
374 | 0xDBBBC9D6,\r | |
375 | 0xACBCF940,\r | |
376 | 0x32D86CE3,\r | |
377 | 0x45DF5C75,\r | |
378 | 0xDCD60DCF,\r | |
379 | 0xABD13D59,\r | |
380 | 0x26D930AC,\r | |
381 | 0x51DE003A,\r | |
382 | 0xC8D75180,\r | |
383 | 0xBFD06116,\r | |
384 | 0x21B4F4B5,\r | |
385 | 0x56B3C423,\r | |
386 | 0xCFBA9599,\r | |
387 | 0xB8BDA50F,\r | |
388 | 0x2802B89E,\r | |
389 | 0x5F058808,\r | |
390 | 0xC60CD9B2,\r | |
391 | 0xB10BE924,\r | |
392 | 0x2F6F7C87,\r | |
393 | 0x58684C11,\r | |
394 | 0xC1611DAB,\r | |
395 | 0xB6662D3D,\r | |
396 | 0x76DC4190,\r | |
397 | 0x01DB7106,\r | |
398 | 0x98D220BC,\r | |
399 | 0xEFD5102A,\r | |
400 | 0x71B18589,\r | |
401 | 0x06B6B51F,\r | |
402 | 0x9FBFE4A5,\r | |
403 | 0xE8B8D433,\r | |
404 | 0x7807C9A2,\r | |
405 | 0x0F00F934,\r | |
406 | 0x9609A88E,\r | |
407 | 0xE10E9818,\r | |
408 | 0x7F6A0DBB,\r | |
409 | 0x086D3D2D,\r | |
410 | 0x91646C97,\r | |
411 | 0xE6635C01,\r | |
412 | 0x6B6B51F4,\r | |
413 | 0x1C6C6162,\r | |
414 | 0x856530D8,\r | |
415 | 0xF262004E,\r | |
416 | 0x6C0695ED,\r | |
417 | 0x1B01A57B,\r | |
418 | 0x8208F4C1,\r | |
419 | 0xF50FC457,\r | |
420 | 0x65B0D9C6,\r | |
421 | 0x12B7E950,\r | |
422 | 0x8BBEB8EA,\r | |
423 | 0xFCB9887C,\r | |
424 | 0x62DD1DDF,\r | |
425 | 0x15DA2D49,\r | |
426 | 0x8CD37CF3,\r | |
427 | 0xFBD44C65,\r | |
428 | 0x4DB26158,\r | |
429 | 0x3AB551CE,\r | |
430 | 0xA3BC0074,\r | |
431 | 0xD4BB30E2,\r | |
432 | 0x4ADFA541,\r | |
433 | 0x3DD895D7,\r | |
434 | 0xA4D1C46D,\r | |
435 | 0xD3D6F4FB,\r | |
436 | 0x4369E96A,\r | |
437 | 0x346ED9FC,\r | |
438 | 0xAD678846,\r | |
439 | 0xDA60B8D0,\r | |
440 | 0x44042D73,\r | |
441 | 0x33031DE5,\r | |
442 | 0xAA0A4C5F,\r | |
443 | 0xDD0D7CC9,\r | |
444 | 0x5005713C,\r | |
445 | 0x270241AA,\r | |
446 | 0xBE0B1010,\r | |
447 | 0xC90C2086,\r | |
448 | 0x5768B525,\r | |
449 | 0x206F85B3,\r | |
450 | 0xB966D409,\r | |
451 | 0xCE61E49F,\r | |
452 | 0x5EDEF90E,\r | |
453 | 0x29D9C998,\r | |
454 | 0xB0D09822,\r | |
455 | 0xC7D7A8B4,\r | |
456 | 0x59B33D17,\r | |
457 | 0x2EB40D81,\r | |
458 | 0xB7BD5C3B,\r | |
459 | 0xC0BA6CAD,\r | |
460 | 0xEDB88320,\r | |
461 | 0x9ABFB3B6,\r | |
462 | 0x03B6E20C,\r | |
463 | 0x74B1D29A,\r | |
464 | 0xEAD54739,\r | |
465 | 0x9DD277AF,\r | |
466 | 0x04DB2615,\r | |
467 | 0x73DC1683,\r | |
468 | 0xE3630B12,\r | |
469 | 0x94643B84,\r | |
470 | 0x0D6D6A3E,\r | |
471 | 0x7A6A5AA8,\r | |
472 | 0xE40ECF0B,\r | |
473 | 0x9309FF9D,\r | |
474 | 0x0A00AE27,\r | |
475 | 0x7D079EB1,\r | |
476 | 0xF00F9344,\r | |
477 | 0x8708A3D2,\r | |
478 | 0x1E01F268,\r | |
479 | 0x6906C2FE,\r | |
480 | 0xF762575D,\r | |
481 | 0x806567CB,\r | |
482 | 0x196C3671,\r | |
483 | 0x6E6B06E7,\r | |
484 | 0xFED41B76,\r | |
485 | 0x89D32BE0,\r | |
486 | 0x10DA7A5A,\r | |
487 | 0x67DD4ACC,\r | |
488 | 0xF9B9DF6F,\r | |
489 | 0x8EBEEFF9,\r | |
490 | 0x17B7BE43,\r | |
491 | 0x60B08ED5,\r | |
492 | 0xD6D6A3E8,\r | |
493 | 0xA1D1937E,\r | |
494 | 0x38D8C2C4,\r | |
495 | 0x4FDFF252,\r | |
496 | 0xD1BB67F1,\r | |
497 | 0xA6BC5767,\r | |
498 | 0x3FB506DD,\r | |
499 | 0x48B2364B,\r | |
500 | 0xD80D2BDA,\r | |
501 | 0xAF0A1B4C,\r | |
502 | 0x36034AF6,\r | |
503 | 0x41047A60,\r | |
504 | 0xDF60EFC3,\r | |
505 | 0xA867DF55,\r | |
506 | 0x316E8EEF,\r | |
507 | 0x4669BE79,\r | |
508 | 0xCB61B38C,\r | |
509 | 0xBC66831A,\r | |
510 | 0x256FD2A0,\r | |
511 | 0x5268E236,\r | |
512 | 0xCC0C7795,\r | |
513 | 0xBB0B4703,\r | |
514 | 0x220216B9,\r | |
515 | 0x5505262F,\r | |
516 | 0xC5BA3BBE,\r | |
517 | 0xB2BD0B28,\r | |
518 | 0x2BB45A92,\r | |
519 | 0x5CB36A04,\r | |
520 | 0xC2D7FFA7,\r | |
521 | 0xB5D0CF31,\r | |
522 | 0x2CD99E8B,\r | |
523 | 0x5BDEAE1D,\r | |
524 | 0x9B64C2B0,\r | |
525 | 0xEC63F226,\r | |
526 | 0x756AA39C,\r | |
527 | 0x026D930A,\r | |
528 | 0x9C0906A9,\r | |
529 | 0xEB0E363F,\r | |
530 | 0x72076785,\r | |
531 | 0x05005713,\r | |
532 | 0x95BF4A82,\r | |
533 | 0xE2B87A14,\r | |
534 | 0x7BB12BAE,\r | |
535 | 0x0CB61B38,\r | |
536 | 0x92D28E9B,\r | |
537 | 0xE5D5BE0D,\r | |
538 | 0x7CDCEFB7,\r | |
539 | 0x0BDBDF21,\r | |
540 | 0x86D3D2D4,\r | |
541 | 0xF1D4E242,\r | |
542 | 0x68DDB3F8,\r | |
543 | 0x1FDA836E,\r | |
544 | 0x81BE16CD,\r | |
545 | 0xF6B9265B,\r | |
546 | 0x6FB077E1,\r | |
547 | 0x18B74777,\r | |
548 | 0x88085AE6,\r | |
549 | 0xFF0F6A70,\r | |
550 | 0x66063BCA,\r | |
551 | 0x11010B5C,\r | |
552 | 0x8F659EFF,\r | |
553 | 0xF862AE69,\r | |
554 | 0x616BFFD3,\r | |
555 | 0x166CCF45,\r | |
556 | 0xA00AE278,\r | |
557 | 0xD70DD2EE,\r | |
558 | 0x4E048354,\r | |
559 | 0x3903B3C2,\r | |
560 | 0xA7672661,\r | |
561 | 0xD06016F7,\r | |
562 | 0x4969474D,\r | |
563 | 0x3E6E77DB,\r | |
564 | 0xAED16A4A,\r | |
565 | 0xD9D65ADC,\r | |
566 | 0x40DF0B66,\r | |
567 | 0x37D83BF0,\r | |
568 | 0xA9BCAE53,\r | |
569 | 0xDEBB9EC5,\r | |
570 | 0x47B2CF7F,\r | |
571 | 0x30B5FFE9,\r | |
572 | 0xBDBDF21C,\r | |
573 | 0xCABAC28A,\r | |
574 | 0x53B39330,\r | |
575 | 0x24B4A3A6,\r | |
576 | 0xBAD03605,\r | |
577 | 0xCDD70693,\r | |
578 | 0x54DE5729,\r | |
579 | 0x23D967BF,\r | |
580 | 0xB3667A2E,\r | |
581 | 0xC4614AB8,\r | |
582 | 0x5D681B02,\r | |
583 | 0x2A6F2B94,\r | |
584 | 0xB40BBE37,\r | |
585 | 0xC30C8EA1,\r | |
586 | 0x5A05DF1B,\r | |
587 | 0x2D02EF8D\r | |
588 | };\r | |
e1f414b6 | 589 | \r |
0a8e6f79 LG |
590 | /**\r |
591 | Computes and returns a 32-bit CRC for a data buffer.\r | |
592 | CRC32 value bases on ITU-T V.42.\r | |
593 | \r | |
594 | If Buffer is NULL, then ASSERT().\r | |
595 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
596 | \r | |
597 | @param[in] Buffer A pointer to the buffer on which the 32-bit CRC is to be computed.\r | |
598 | @param[in] Length The number of bytes in the buffer Data.\r | |
599 | \r | |
600 | @retval Crc32 The 32-bit CRC was computed for the data buffer.\r | |
601 | \r | |
602 | **/\r | |
603 | UINT32\r | |
604 | EFIAPI\r | |
605 | CalculateCrc32(\r | |
606 | IN VOID *Buffer,\r | |
607 | IN UINTN Length\r | |
608 | )\r | |
609 | {\r | |
610 | UINTN Index;\r | |
611 | UINT32 Crc;\r | |
612 | UINT8 *Ptr;\r | |
613 | \r | |
614 | ASSERT (Buffer != NULL);\r | |
615 | ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));\r | |
616 | \r | |
617 | //\r | |
618 | // Compute CRC\r | |
619 | //\r | |
620 | Crc = 0xffffffff;\r | |
621 | for (Index = 0, Ptr = Buffer; Index < Length; Index++, Ptr++) {\r | |
622 | Crc = (Crc >> 8) ^ mCrcTable[(UINT8) Crc ^ *Ptr];\r | |
623 | }\r | |
624 | \r | |
625 | return Crc ^ 0xffffffff;\r | |
626 | }\r |