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Line 36... |
//
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//
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// LEB 128 encoding support.
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// LEB 128 encoding support.
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//
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//
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// Read a ULEB 128 encoded integer from BUFFER. Return the length of the
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// Read a ULEB 128 encoded integer from BUFFER. Return the length of the
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// encoded integer at the location PLEN.
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// encoded integer at the location PLEN. The common case of a single-byte
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// value is handled inline, and multi-byte values are processed by the _x
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// routine, where BYTE is the first byte of the value.
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uint64_t
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uint64_t
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read_unsigned_LEB_128(const unsigned char* buffer, size_t* plen);
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read_unsigned_LEB_128_x(const unsigned char* buffer, size_t* plen,
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unsigned char byte);
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inline uint64_t
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read_unsigned_LEB_128(const unsigned char* buffer, size_t* plen)
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{
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unsigned char byte = *buffer++;
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if ((byte & 0x80) != 0)
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return read_unsigned_LEB_128_x(buffer, plen, byte);
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*plen = 1;
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return static_cast<uint64_t>(byte);
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}
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// Read an SLEB 128 encoded integer from BUFFER. Return the length of the
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// Read an SLEB 128 encoded integer from BUFFER. Return the length of the
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// encoded integer at the location PLEN.
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// encoded integer at the location PLEN. The common case of a single-byte
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// value is handled inline, and multi-byte values are processed by the _x
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// routine, where BYTE is the first byte of the value.
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int64_t
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int64_t
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read_signed_LEB_128(const unsigned char* buffer, size_t* plen);
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read_signed_LEB_128_x(const unsigned char* buffer, size_t* plen,
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unsigned char byte);
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inline int64_t
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read_signed_LEB_128(const unsigned char* buffer, size_t* plen)
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{
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unsigned char byte = *buffer++;
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if ((byte & 0x80) != 0)
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return read_signed_LEB_128_x(buffer, plen, byte);
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*plen = 1;
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if (byte & 0x40)
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return -(static_cast<int64_t>(1) << 7) | static_cast<int64_t>(byte);
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return static_cast<int64_t>(byte);
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}
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// Write a ULEB 128 encoded VALUE to BUFFER.
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// Write a ULEB 128 encoded VALUE to BUFFER.
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void
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void
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write_unsigned_LEB_128(std::vector<unsigned char>* buffer, uint64_t value);
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write_unsigned_LEB_128(std::vector<unsigned char>* buffer, uint64_t value);
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