tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

MdePkg BaseLib: Add new API CalculateCrc32() 

CalculateCrc32() bases on the initialized mCrcTable. When CalculateCrc32()
is used, mCrcTable will take 1KB size in the image. When CalculateCrc32()
is not used, mCrcTable will not be built in the image, and no size impact.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Liming Gao 2017-09-08 13:18:24 +08:00
parent fda8f631ed
commit 0a8e6f7971
2 changed files with 314 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
MdePkg/Include/Library/BaseLib.h
View File

@ -4829,6 +4829,25 @@ CalculateCheckSum64 (
IN UINTN Length
);
/**
Computes and returns a 32-bit CRC for a data buffer.
CRC32 value bases on ITU-T V.42.
If Buffer is NULL, then ASSERT().
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param[in] Buffer A pointer to the buffer on which the 32-bit CRC is to be computed.
@param[in] Length The number of bytes in the buffer Data.
@retval Crc32 The 32-bit CRC was computed for the data buffer.
**/
UINT32
EFIAPI
CalculateCrc32(
IN VOID *Buffer,
IN UINTN Length
);
//
// Base Library CPU Functions

295
MdePkg/Library/BaseLib/CheckSum.c
View File

@ -334,4 +334,299 @@ CalculateCheckSum64 (
return (UINT64) ((UINT64)(-1) - CheckSum + 1);
}
GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT32 mCrcTable[256] = {
0x00000000,
0x77073096,
0xEE0E612C,
0x990951BA,
0x076DC419,
0x706AF48F,
0xE963A535,
0x9E6495A3,
0x0EDB8832,
0x79DCB8A4,
0xE0D5E91E,
0x97D2D988,
0x09B64C2B,
0x7EB17CBD,
0xE7B82D07,
0x90BF1D91,
0x1DB71064,
0x6AB020F2,
0xF3B97148,
0x84BE41DE,
0x1ADAD47D,
0x6DDDE4EB,
0xF4D4B551,
0x83D385C7,
0x136C9856,
0x646BA8C0,
0xFD62F97A,
0x8A65C9EC,
0x14015C4F,
0x63066CD9,
0xFA0F3D63,
0x8D080DF5,
0x3B6E20C8,
0x4C69105E,
0xD56041E4,
0xA2677172,
0x3C03E4D1,
0x4B04D447,
0xD20D85FD,
0xA50AB56B,
0x35B5A8FA,
0x42B2986C,
0xDBBBC9D6,
0xACBCF940,
0x32D86CE3,
0x45DF5C75,
0xDCD60DCF,
0xABD13D59,
0x26D930AC,
0x51DE003A,
0xC8D75180,
0xBFD06116,
0x21B4F4B5,
0x56B3C423,
0xCFBA9599,
0xB8BDA50F,
0x2802B89E,
0x5F058808,
0xC60CD9B2,
0xB10BE924,
0x2F6F7C87,
0x58684C11,
0xC1611DAB,
0xB6662D3D,
0x76DC4190,
0x01DB7106,
0x98D220BC,
0xEFD5102A,
0x71B18589,
0x06B6B51F,
0x9FBFE4A5,
0xE8B8D433,
0x7807C9A2,
0x0F00F934,
0x9609A88E,
0xE10E9818,
0x7F6A0DBB,
0x086D3D2D,
0x91646C97,
0xE6635C01,
0x6B6B51F4,
0x1C6C6162,
0x856530D8,
0xF262004E,
0x6C0695ED,
0x1B01A57B,
0x8208F4C1,
0xF50FC457,
0x65B0D9C6,
0x12B7E950,
0x8BBEB8EA,
0xFCB9887C,
0x62DD1DDF,
0x15DA2D49,
0x8CD37CF3,
0xFBD44C65,
0x4DB26158,
0x3AB551CE,
0xA3BC0074,
0xD4BB30E2,
0x4ADFA541,
0x3DD895D7,
0xA4D1C46D,
0xD3D6F4FB,
0x4369E96A,
0x346ED9FC,
0xAD678846,
0xDA60B8D0,
0x44042D73,
0x33031DE5,
0xAA0A4C5F,
0xDD0D7CC9,
0x5005713C,
0x270241AA,
0xBE0B1010,
0xC90C2086,
0x5768B525,
0x206F85B3,
0xB966D409,
0xCE61E49F,
0x5EDEF90E,
0x29D9C998,
0xB0D09822,
0xC7D7A8B4,
0x59B33D17,
0x2EB40D81,
0xB7BD5C3B,
0xC0BA6CAD,
0xEDB88320,
0x9ABFB3B6,
0x03B6E20C,
0x74B1D29A,
0xEAD54739,
0x9DD277AF,
0x04DB2615,
0x73DC1683,
0xE3630B12,
0x94643B84,
0x0D6D6A3E,
0x7A6A5AA8,
0xE40ECF0B,
0x9309FF9D,
0x0A00AE27,
0x7D079EB1,
0xF00F9344,
0x8708A3D2,
0x1E01F268,
0x6906C2FE,
0xF762575D,
0x806567CB,
0x196C3671,
0x6E6B06E7,
0xFED41B76,
0x89D32BE0,
0x10DA7A5A,
0x67DD4ACC,
0xF9B9DF6F,
0x8EBEEFF9,
0x17B7BE43,
0x60B08ED5,
0xD6D6A3E8,
0xA1D1937E,
0x38D8C2C4,
0x4FDFF252,
0xD1BB67F1,
0xA6BC5767,
0x3FB506DD,
0x48B2364B,
0xD80D2BDA,
0xAF0A1B4C,
0x36034AF6,
0x41047A60,
0xDF60EFC3,
0xA867DF55,
0x316E8EEF,
0x4669BE79,
0xCB61B38C,
0xBC66831A,
0x256FD2A0,
0x5268E236,
0xCC0C7795,
0xBB0B4703,
0x220216B9,
0x5505262F,
0xC5BA3BBE,
0xB2BD0B28,
0x2BB45A92,
0x5CB36A04,
0xC2D7FFA7,
0xB5D0CF31,
0x2CD99E8B,
0x5BDEAE1D,
0x9B64C2B0,
0xEC63F226,
0x756AA39C,
0x026D930A,
0x9C0906A9,
0xEB0E363F,
0x72076785,
0x05005713,
0x95BF4A82,
0xE2B87A14,
0x7BB12BAE,
0x0CB61B38,
0x92D28E9B,
0xE5D5BE0D,
0x7CDCEFB7,
0x0BDBDF21,
0x86D3D2D4,
0xF1D4E242,
0x68DDB3F8,
0x1FDA836E,
0x81BE16CD,
0xF6B9265B,
0x6FB077E1,
0x18B74777,
0x88085AE6,
0xFF0F6A70,
0x66063BCA,
0x11010B5C,
0x8F659EFF,
0xF862AE69,
0x616BFFD3,
0x166CCF45,
0xA00AE278,
0xD70DD2EE,
0x4E048354,
0x3903B3C2,
0xA7672661,
0xD06016F7,
0x4969474D,
0x3E6E77DB,
0xAED16A4A,
0xD9D65ADC,
0x40DF0B66,
0x37D83BF0,
0xA9BCAE53,
0xDEBB9EC5,
0x47B2CF7F,
0x30B5FFE9,
0xBDBDF21C,
0xCABAC28A,
0x53B39330,
0x24B4A3A6,
0xBAD03605,
0xCDD70693,
0x54DE5729,
0x23D967BF,
0xB3667A2E,
0xC4614AB8,
0x5D681B02,
0x2A6F2B94,
0xB40BBE37,
0xC30C8EA1,
0x5A05DF1B,
0x2D02EF8D
};
/**
Computes and returns a 32-bit CRC for a data buffer.
CRC32 value bases on ITU-T V.42.
If Buffer is NULL, then ASSERT().
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
@param[in] Buffer A pointer to the buffer on which the 32-bit CRC is to be computed.
@param[in] Length The number of bytes in the buffer Data.
@retval Crc32 The 32-bit CRC was computed for the data buffer.
**/
UINT32
EFIAPI
CalculateCrc32(
IN VOID *Buffer,
IN UINTN Length
)
{
UINTN Index;
UINT32 Crc;
UINT8 *Ptr;
ASSERT (Buffer != NULL);
ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));
//
// Compute CRC
//
Crc = 0xffffffff;
for (Index = 0, Ptr = Buffer; Index < Length; Index++, Ptr++) {
Crc = (Crc >> 8) ^ mCrcTable[(UINT8) Crc ^ *Ptr];
}
return Crc ^ 0xffffffff;
}