gem5 v23.0.0.0
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crc.hh
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37
38#ifndef __BASE_CRC_HH__
39#define __BASE_CRC_HH__
40
41#include "base/bitfield.hh"
42
43namespace gem5
44{
45
60template <uint32_t Poly>
61uint32_t
62crc32(const uint8_t* data, uint32_t crc, std::size_t size)
63{
64 uint32_t byte = 0;
65
66 crc = reverseBits(crc);
67 for (auto i = 0; i < size; i++) {
68 byte = data[i];
69
70 // 32-bit reverse
71 byte = reverseBits(byte);
72 for (auto j = 0; j <= 7; j++) {
73 if ((int)(crc ^ byte) < 0) {
74 crc = (crc << 1) ^ Poly;
75 } else {
76 crc = crc << 1;
77 }
78 byte = byte << 1;
79 }
80 }
81 return reverseBits(crc);
82}
83
84} // namespace gem5
85
86#endif // __BASE_CRC_HH__
data
const char data[]
Definition circlebuf.test.cc:48
gem5::reverseBits
std::enable_if_t< std::is_integral_v< T >, T > reverseBits(T val, size_t size=sizeof(T))
Takes a value and returns the bit reversed version.
Definition bitfield.hh:252
gem5::ArmISA::i
Bitfield< 7 > i
Definition misc_types.hh:67
gem5::ArmISA::crc32
Bitfield< 19, 16 > crc32
Definition misc_types.hh:81
gem5::ArmISA::j
Bitfield< 24 > j
Definition misc_types.hh:57
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition gpu_translation_state.hh:38
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