Utility functions to generate checksum based on 2's complement\r
algorithm.\r
\r
- Copyright (c) 2007 - 2008, Intel Corporation<BR>\r
- All rights reserved. This program and the accompanying materials\r
+ Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r
+ This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
+ http://opensource.org/licenses/bsd-license.php.\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
If Buffer is NULL, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the sum operation.\r
+ @param Buffer The pointer to the buffer to carry out the sum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Sum The sum of Buffer with carry bits dropped during additions.\r
for (Sum = 0, Count = 0; Count < Length; Count++) {\r
Sum = (UINT8) (Sum + *(Buffer + Count));\r
}\r
- \r
+\r
return Sum;\r
}\r
\r
If Buffer is NULL, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the checksum operation.\r
+ @param Buffer The pointer to the buffer to carry out the checksum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Checksum The 2's complement checksum of Buffer.\r
If Length is not aligned on a 16-bit boundary, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the sum operation.\r
+ @param Buffer The pointer to the buffer to carry out the sum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Sum The sum of Buffer with carry bits dropped during additions.\r
for (Sum = 0, Count = 0; Count < Total; Count++) {\r
Sum = (UINT16) (Sum + *(Buffer + Count));\r
}\r
- \r
+\r
return Sum;\r
}\r
\r
If Length is not aligned on a 16-bit boundary, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the checksum operation.\r
+ @param Buffer The pointer to the buffer to carry out the checksum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Checksum The 2's complement checksum of Buffer.\r
If Length is not aligned on a 32-bit boundary, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the sum operation.\r
+ @param Buffer The pointer to the buffer to carry out the sum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Sum The sum of Buffer with carry bits dropped during additions.\r
for (Sum = 0, Count = 0; Count < Total; Count++) {\r
Sum = Sum + *(Buffer + Count);\r
}\r
- \r
+\r
return Sum;\r
}\r
\r
If Length is not aligned on a 32-bit boundary, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the checksum operation.\r
+ @param Buffer The pointer to the buffer to carry out the checksum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Checksum The 2's complement checksum of Buffer.\r
If Length is not aligned on a 64-bit boundary, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the sum operation.\r
+ @param Buffer The pointer to the buffer to carry out the sum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Sum The sum of Buffer with carry bits dropped during additions.\r
for (Sum = 0, Count = 0; Count < Total; Count++) {\r
Sum = Sum + *(Buffer + Count);\r
}\r
- \r
+\r
return Sum;\r
}\r
\r
If Length is not aligned on a 64-bit boundary, then ASSERT().\r
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
- @param Buffer Pointer to the buffer to carry out the checksum operation.\r
+ @param Buffer The pointer to the buffer to carry out the checksum operation.\r
@param Length The size, in bytes, of Buffer.\r
\r
@return Checksum The 2's complement checksum of Buffer.\r
return (UINT64) ((UINT64)(-1) - CheckSum + 1);\r
}\r
\r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT32 mCrcTable[256] = {\r
+ 0x00000000,\r
+ 0x77073096,\r
+ 0xEE0E612C,\r
+ 0x990951BA,\r
+ 0x076DC419,\r
+ 0x706AF48F,\r
+ 0xE963A535,\r
+ 0x9E6495A3,\r
+ 0x0EDB8832,\r
+ 0x79DCB8A4,\r
+ 0xE0D5E91E,\r
+ 0x97D2D988,\r
+ 0x09B64C2B,\r
+ 0x7EB17CBD,\r
+ 0xE7B82D07,\r
+ 0x90BF1D91,\r
+ 0x1DB71064,\r
+ 0x6AB020F2,\r
+ 0xF3B97148,\r
+ 0x84BE41DE,\r
+ 0x1ADAD47D,\r
+ 0x6DDDE4EB,\r
+ 0xF4D4B551,\r
+ 0x83D385C7,\r
+ 0x136C9856,\r
+ 0x646BA8C0,\r
+ 0xFD62F97A,\r
+ 0x8A65C9EC,\r
+ 0x14015C4F,\r
+ 0x63066CD9,\r
+ 0xFA0F3D63,\r
+ 0x8D080DF5,\r
+ 0x3B6E20C8,\r
+ 0x4C69105E,\r
+ 0xD56041E4,\r
+ 0xA2677172,\r
+ 0x3C03E4D1,\r
+ 0x4B04D447,\r
+ 0xD20D85FD,\r
+ 0xA50AB56B,\r
+ 0x35B5A8FA,\r
+ 0x42B2986C,\r
+ 0xDBBBC9D6,\r
+ 0xACBCF940,\r
+ 0x32D86CE3,\r
+ 0x45DF5C75,\r
+ 0xDCD60DCF,\r
+ 0xABD13D59,\r
+ 0x26D930AC,\r
+ 0x51DE003A,\r
+ 0xC8D75180,\r
+ 0xBFD06116,\r
+ 0x21B4F4B5,\r
+ 0x56B3C423,\r
+ 0xCFBA9599,\r
+ 0xB8BDA50F,\r
+ 0x2802B89E,\r
+ 0x5F058808,\r
+ 0xC60CD9B2,\r
+ 0xB10BE924,\r
+ 0x2F6F7C87,\r
+ 0x58684C11,\r
+ 0xC1611DAB,\r
+ 0xB6662D3D,\r
+ 0x76DC4190,\r
+ 0x01DB7106,\r
+ 0x98D220BC,\r
+ 0xEFD5102A,\r
+ 0x71B18589,\r
+ 0x06B6B51F,\r
+ 0x9FBFE4A5,\r
+ 0xE8B8D433,\r
+ 0x7807C9A2,\r
+ 0x0F00F934,\r
+ 0x9609A88E,\r
+ 0xE10E9818,\r
+ 0x7F6A0DBB,\r
+ 0x086D3D2D,\r
+ 0x91646C97,\r
+ 0xE6635C01,\r
+ 0x6B6B51F4,\r
+ 0x1C6C6162,\r
+ 0x856530D8,\r
+ 0xF262004E,\r
+ 0x6C0695ED,\r
+ 0x1B01A57B,\r
+ 0x8208F4C1,\r
+ 0xF50FC457,\r
+ 0x65B0D9C6,\r
+ 0x12B7E950,\r
+ 0x8BBEB8EA,\r
+ 0xFCB9887C,\r
+ 0x62DD1DDF,\r
+ 0x15DA2D49,\r
+ 0x8CD37CF3,\r
+ 0xFBD44C65,\r
+ 0x4DB26158,\r
+ 0x3AB551CE,\r
+ 0xA3BC0074,\r
+ 0xD4BB30E2,\r
+ 0x4ADFA541,\r
+ 0x3DD895D7,\r
+ 0xA4D1C46D,\r
+ 0xD3D6F4FB,\r
+ 0x4369E96A,\r
+ 0x346ED9FC,\r
+ 0xAD678846,\r
+ 0xDA60B8D0,\r
+ 0x44042D73,\r
+ 0x33031DE5,\r
+ 0xAA0A4C5F,\r
+ 0xDD0D7CC9,\r
+ 0x5005713C,\r
+ 0x270241AA,\r
+ 0xBE0B1010,\r
+ 0xC90C2086,\r
+ 0x5768B525,\r
+ 0x206F85B3,\r
+ 0xB966D409,\r
+ 0xCE61E49F,\r
+ 0x5EDEF90E,\r
+ 0x29D9C998,\r
+ 0xB0D09822,\r
+ 0xC7D7A8B4,\r
+ 0x59B33D17,\r
+ 0x2EB40D81,\r
+ 0xB7BD5C3B,\r
+ 0xC0BA6CAD,\r
+ 0xEDB88320,\r
+ 0x9ABFB3B6,\r
+ 0x03B6E20C,\r
+ 0x74B1D29A,\r
+ 0xEAD54739,\r
+ 0x9DD277AF,\r
+ 0x04DB2615,\r
+ 0x73DC1683,\r
+ 0xE3630B12,\r
+ 0x94643B84,\r
+ 0x0D6D6A3E,\r
+ 0x7A6A5AA8,\r
+ 0xE40ECF0B,\r
+ 0x9309FF9D,\r
+ 0x0A00AE27,\r
+ 0x7D079EB1,\r
+ 0xF00F9344,\r
+ 0x8708A3D2,\r
+ 0x1E01F268,\r
+ 0x6906C2FE,\r
+ 0xF762575D,\r
+ 0x806567CB,\r
+ 0x196C3671,\r
+ 0x6E6B06E7,\r
+ 0xFED41B76,\r
+ 0x89D32BE0,\r
+ 0x10DA7A5A,\r
+ 0x67DD4ACC,\r
+ 0xF9B9DF6F,\r
+ 0x8EBEEFF9,\r
+ 0x17B7BE43,\r
+ 0x60B08ED5,\r
+ 0xD6D6A3E8,\r
+ 0xA1D1937E,\r
+ 0x38D8C2C4,\r
+ 0x4FDFF252,\r
+ 0xD1BB67F1,\r
+ 0xA6BC5767,\r
+ 0x3FB506DD,\r
+ 0x48B2364B,\r
+ 0xD80D2BDA,\r
+ 0xAF0A1B4C,\r
+ 0x36034AF6,\r
+ 0x41047A60,\r
+ 0xDF60EFC3,\r
+ 0xA867DF55,\r
+ 0x316E8EEF,\r
+ 0x4669BE79,\r
+ 0xCB61B38C,\r
+ 0xBC66831A,\r
+ 0x256FD2A0,\r
+ 0x5268E236,\r
+ 0xCC0C7795,\r
+ 0xBB0B4703,\r
+ 0x220216B9,\r
+ 0x5505262F,\r
+ 0xC5BA3BBE,\r
+ 0xB2BD0B28,\r
+ 0x2BB45A92,\r
+ 0x5CB36A04,\r
+ 0xC2D7FFA7,\r
+ 0xB5D0CF31,\r
+ 0x2CD99E8B,\r
+ 0x5BDEAE1D,\r
+ 0x9B64C2B0,\r
+ 0xEC63F226,\r
+ 0x756AA39C,\r
+ 0x026D930A,\r
+ 0x9C0906A9,\r
+ 0xEB0E363F,\r
+ 0x72076785,\r
+ 0x05005713,\r
+ 0x95BF4A82,\r
+ 0xE2B87A14,\r
+ 0x7BB12BAE,\r
+ 0x0CB61B38,\r
+ 0x92D28E9B,\r
+ 0xE5D5BE0D,\r
+ 0x7CDCEFB7,\r
+ 0x0BDBDF21,\r
+ 0x86D3D2D4,\r
+ 0xF1D4E242,\r
+ 0x68DDB3F8,\r
+ 0x1FDA836E,\r
+ 0x81BE16CD,\r
+ 0xF6B9265B,\r
+ 0x6FB077E1,\r
+ 0x18B74777,\r
+ 0x88085AE6,\r
+ 0xFF0F6A70,\r
+ 0x66063BCA,\r
+ 0x11010B5C,\r
+ 0x8F659EFF,\r
+ 0xF862AE69,\r
+ 0x616BFFD3,\r
+ 0x166CCF45,\r
+ 0xA00AE278,\r
+ 0xD70DD2EE,\r
+ 0x4E048354,\r
+ 0x3903B3C2,\r
+ 0xA7672661,\r
+ 0xD06016F7,\r
+ 0x4969474D,\r
+ 0x3E6E77DB,\r
+ 0xAED16A4A,\r
+ 0xD9D65ADC,\r
+ 0x40DF0B66,\r
+ 0x37D83BF0,\r
+ 0xA9BCAE53,\r
+ 0xDEBB9EC5,\r
+ 0x47B2CF7F,\r
+ 0x30B5FFE9,\r
+ 0xBDBDF21C,\r
+ 0xCABAC28A,\r
+ 0x53B39330,\r
+ 0x24B4A3A6,\r
+ 0xBAD03605,\r
+ 0xCDD70693,\r
+ 0x54DE5729,\r
+ 0x23D967BF,\r
+ 0xB3667A2E,\r
+ 0xC4614AB8,\r
+ 0x5D681B02,\r
+ 0x2A6F2B94,\r
+ 0xB40BBE37,\r
+ 0xC30C8EA1,\r
+ 0x5A05DF1B,\r
+ 0x2D02EF8D\r
+};\r
\r
+/**\r
+ Computes and returns a 32-bit CRC for a data buffer.\r
+ CRC32 value bases on ITU-T V.42.\r
+\r
+ If Buffer is NULL, then ASSERT().\r
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
+\r
+ @param[in] Buffer A pointer to the buffer on which the 32-bit CRC is to be computed.\r
+ @param[in] Length The number of bytes in the buffer Data.\r
+\r
+ @retval Crc32 The 32-bit CRC was computed for the data buffer.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+CalculateCrc32(\r
+ IN VOID *Buffer,\r
+ IN UINTN Length\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINT32 Crc;\r
+ UINT8 *Ptr;\r
+\r
+ ASSERT (Buffer != NULL);\r
+ ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));\r
+\r
+ //\r
+ // Compute CRC\r
+ //\r
+ Crc = 0xffffffff;\r
+ for (Index = 0, Ptr = Buffer; Index < Length; Index++, Ptr++) {\r
+ Crc = (Crc >> 8) ^ mCrcTable[(UINT8) Crc ^ *Ptr];\r
+ }\r
+\r
+ return Crc ^ 0xffffffff;\r
+}\r
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