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78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
//-----------------------------------------------------------------------------
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// Jonathan Westhues, Aug 2005
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Utility functions used in many places, not specific to any piece of code.
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//-----------------------------------------------------------------------------
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#ifndef __COMMONUTIL_H
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#define __COMMONUTIL_H
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#include "common.h"
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// endian change for 16bit
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#ifdef __GNUC__
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#ifndef BSWAP_16
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#define BSWAP_16(x) __builtin_bswap16(x)
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#endif
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#else
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#ifdef _MSC_VER
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#ifndef BSWAP_16
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#define BSWAP_16(x) _byteswap_ushort(x)
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#endif
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#else
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#ifndef BSWAP_16
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# define BSWAP_16(x) ((( ((x) & 0xFF00 ) >> 8))| ( (((x) & 0x00FF) << 8)))
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#endif
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#endif
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#endif
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#ifndef BITMASK
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# define BITMASK(X) (1 << (X))
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#endif
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#ifndef ARRAYLEN
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# define ARRAYLEN(x) (sizeof(x)/sizeof((x)[0]))
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#endif
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#ifndef NTIME
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# define NTIME(n) for (int _index = 0; _index < n; _index++)
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#endif
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extern struct version_information version_information;
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void FormatVersionInformation(char *dst, int len, const char *prefix, void *version_info);
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uint32_t reflect(uint32_t v, int b); // used in crc.c ...
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uint8_t reflect8(uint8_t b); // dedicated 8bit reversal
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uint16_t reflect16(uint16_t b); // dedicated 16bit reversal
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uint32_t reflect32(uint32_t b); // dedicated 32bit reversal
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void num_to_bytes(uint64_t n, size_t len, uint8_t *dest);
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uint64_t bytes_to_num(uint8_t *src, size_t len);
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// LE and BE to/from memory
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uint16_t MemLeToUint2byte(uint8_t *data);
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uint32_t MemLeToUint3byte(uint8_t *data);
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uint32_t MemLeToUint4byte(uint8_t *data);
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uint16_t MemBeToUint2byte(uint8_t *data);
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uint32_t MemBeToUint3byte(uint8_t *data);
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uint32_t MemBeToUint4byte(uint8_t *data);
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void Uint2byteToMemLe(uint8_t *data, uint16_t value);
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void Uint3byteToMemLe(uint8_t *data, uint32_t value);
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void Uint4byteToMemLe(uint8_t *data, uint32_t value);
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void Uint2byteToMemBe(uint8_t *data, uint16_t value);
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void Uint3byteToMemBe(uint8_t *data, uint32_t value);
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void Uint4byteToMemBe(uint8_t *data, uint32_t value);
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// rotate left byte array
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void rol(uint8_t *data, const size_t len);
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void lsl(uint8_t *data, size_t len);
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uint32_t le24toh(uint8_t data[3]);
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void htole24(uint32_t val, uint8_t data[3]);
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// rol on a u32
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uint32_t rotl(uint32_t a, uint8_t n);
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uint32_t rotr(uint32_t a, uint8_t n);
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#endif
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