mirror of
https://github.com/trezor/trezor-firmware.git
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276 lines
6.6 KiB
C
276 lines
6.6 KiB
C
/* ecrypt-portable.h */
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/*
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* WARNING: the conversions defined below are implemented as macros,
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* and should be used carefully. They should NOT be used with
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* parameters which perform some action. E.g., the following two lines
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* are not equivalent:
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*
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* 1) ++x; y = ROTL32(x, n);
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* 2) y = ROTL32(++x, n);
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*/
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/*
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* *** Please do not edit this file. ***
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*
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* The default macros can be overridden for specific architectures by
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* editing 'ecrypt-machine.h'.
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*/
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#ifndef ECRYPT_PORTABLE
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#define ECRYPT_PORTABLE
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#include "ecrypt-config.h"
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#include "ecrypt-types.h"
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/* ------------------------------------------------------------------------- */
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/*
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* The following macros are used to obtain exact-width results.
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*/
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#define U8V(v) ((u8)(v) & U8C(0xFF))
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#define U16V(v) ((u16)(v) & U16C(0xFFFF))
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#define U32V(v) ((u32)(v) & U32C(0xFFFFFFFF))
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#define U64V(v) ((u64)(v) & U64C(0xFFFFFFFFFFFFFFFF))
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/* ------------------------------------------------------------------------- */
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/*
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* The following macros return words with their bits rotated over n
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* positions to the left/right.
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*/
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#define ECRYPT_DEFAULT_ROT
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#define ROTL8(v, n) \
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(U8V((v) << (n)) | ((v) >> (8 - (n))))
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#define ROTL16(v, n) \
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(U16V((v) << (n)) | ((v) >> (16 - (n))))
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#define ROTL32(v, n) \
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(U32V((v) << (n)) | ((v) >> (32 - (n))))
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#define ROTL64(v, n) \
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(U64V((v) << (n)) | ((v) >> (64 - (n))))
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#define ROTR8(v, n) ROTL8(v, 8 - (n))
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#define ROTR16(v, n) ROTL16(v, 16 - (n))
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#define ROTR32(v, n) ROTL32(v, 32 - (n))
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#define ROTR64(v, n) ROTL64(v, 64 - (n))
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#include "ecrypt-machine.h"
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/* ------------------------------------------------------------------------- */
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/*
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* The following macros return a word with bytes in reverse order.
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*/
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#define ECRYPT_DEFAULT_SWAP
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#define SWAP16(v) \
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ROTL16(v, 8)
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#define SWAP32(v) \
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((ROTL32(v, 8) & U32C(0x00FF00FF)) | \
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(ROTL32(v, 24) & U32C(0xFF00FF00)))
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#ifdef ECRYPT_NATIVE64
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#define SWAP64(v) \
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((ROTL64(v, 8) & U64C(0x000000FF000000FF)) | \
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(ROTL64(v, 24) & U64C(0x0000FF000000FF00)) | \
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(ROTL64(v, 40) & U64C(0x00FF000000FF0000)) | \
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(ROTL64(v, 56) & U64C(0xFF000000FF000000)))
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#else
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#define SWAP64(v) \
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(((u64)SWAP32(U32V(v)) << 32) | (u64)SWAP32(U32V(v >> 32)))
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#endif
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#include "ecrypt-machine.h"
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#define ECRYPT_DEFAULT_WTOW
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#ifdef ECRYPT_LITTLE_ENDIAN
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#define U16TO16_LITTLE(v) (v)
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#define U32TO32_LITTLE(v) (v)
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#define U64TO64_LITTLE(v) (v)
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#define U16TO16_BIG(v) SWAP16(v)
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#define U32TO32_BIG(v) SWAP32(v)
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#define U64TO64_BIG(v) SWAP64(v)
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#endif
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#ifdef ECRYPT_BIG_ENDIAN
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#define U16TO16_LITTLE(v) SWAP16(v)
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#define U32TO32_LITTLE(v) SWAP32(v)
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#define U64TO64_LITTLE(v) SWAP64(v)
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#define U16TO16_BIG(v) (v)
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#define U32TO32_BIG(v) (v)
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#define U64TO64_BIG(v) (v)
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#endif
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#include "ecrypt-machine.h"
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/*
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* The following macros load words from an array of bytes with
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* different types of endianness, and vice versa.
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*/
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#define ECRYPT_DEFAULT_BTOW
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#if (!defined(ECRYPT_UNKNOWN) && defined(ECRYPT_I8T_IS_BYTE))
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#define U8TO16_LITTLE(p) U16TO16_LITTLE(((u16*)(p))[0])
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#define U8TO32_LITTLE(p) U32TO32_LITTLE(((u32*)(p))[0])
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#define U8TO64_LITTLE(p) U64TO64_LITTLE(((u64*)(p))[0])
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#define U8TO16_BIG(p) U16TO16_BIG(((u16*)(p))[0])
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#define U8TO32_BIG(p) U32TO32_BIG(((u32*)(p))[0])
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#define U8TO64_BIG(p) U64TO64_BIG(((u64*)(p))[0])
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#define U16TO8_LITTLE(p, v) (((u16*)(p))[0] = U16TO16_LITTLE(v))
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#define U32TO8_LITTLE(p, v) (((u32*)(p))[0] = U32TO32_LITTLE(v))
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#define U64TO8_LITTLE(p, v) (((u64*)(p))[0] = U64TO64_LITTLE(v))
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#define U16TO8_BIG(p, v) (((u16*)(p))[0] = U16TO16_BIG(v))
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#define U32TO8_BIG(p, v) (((u32*)(p))[0] = U32TO32_BIG(v))
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#define U64TO8_BIG(p, v) (((u64*)(p))[0] = U64TO64_BIG(v))
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#else
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#define U8TO16_LITTLE(p) \
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(((u16)((p)[0]) ) | \
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((u16)((p)[1]) << 8))
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#define U8TO32_LITTLE(p) \
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(((u32)((p)[0]) ) | \
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((u32)((p)[1]) << 8) | \
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((u32)((p)[2]) << 16) | \
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((u32)((p)[3]) << 24))
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#ifdef ECRYPT_NATIVE64
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#define U8TO64_LITTLE(p) \
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(((u64)((p)[0]) ) | \
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((u64)((p)[1]) << 8) | \
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((u64)((p)[2]) << 16) | \
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((u64)((p)[3]) << 24) | \
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((u64)((p)[4]) << 32) | \
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((u64)((p)[5]) << 40) | \
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((u64)((p)[6]) << 48) | \
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((u64)((p)[7]) << 56))
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#else
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#define U8TO64_LITTLE(p) \
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((u64)U8TO32_LITTLE(p) | ((u64)U8TO32_LITTLE((p) + 4) << 32))
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#endif
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#define U8TO16_BIG(p) \
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(((u16)((p)[0]) << 8) | \
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((u16)((p)[1]) ))
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#define U8TO32_BIG(p) \
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(((u32)((p)[0]) << 24) | \
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((u32)((p)[1]) << 16) | \
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((u32)((p)[2]) << 8) | \
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((u32)((p)[3]) ))
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#ifdef ECRYPT_NATIVE64
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#define U8TO64_BIG(p) \
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(((u64)((p)[0]) << 56) | \
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((u64)((p)[1]) << 48) | \
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((u64)((p)[2]) << 40) | \
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((u64)((p)[3]) << 32) | \
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((u64)((p)[4]) << 24) | \
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((u64)((p)[5]) << 16) | \
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((u64)((p)[6]) << 8) | \
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((u64)((p)[7]) ))
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#else
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#define U8TO64_BIG(p) \
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(((u64)U8TO32_BIG(p) << 32) | (u64)U8TO32_BIG((p) + 4))
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#endif
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#define U16TO8_LITTLE(p, v) \
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do { \
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(p)[0] = U8V((v) ); \
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(p)[1] = U8V((v) >> 8); \
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} while (0)
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#define U32TO8_LITTLE(p, v) \
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do { \
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(p)[0] = U8V((v) ); \
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(p)[1] = U8V((v) >> 8); \
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(p)[2] = U8V((v) >> 16); \
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(p)[3] = U8V((v) >> 24); \
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} while (0)
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#ifdef ECRYPT_NATIVE64
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#define U64TO8_LITTLE(p, v) \
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do { \
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(p)[0] = U8V((v) ); \
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(p)[1] = U8V((v) >> 8); \
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(p)[2] = U8V((v) >> 16); \
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(p)[3] = U8V((v) >> 24); \
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(p)[4] = U8V((v) >> 32); \
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(p)[5] = U8V((v) >> 40); \
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(p)[6] = U8V((v) >> 48); \
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(p)[7] = U8V((v) >> 56); \
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} while (0)
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#else
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#define U64TO8_LITTLE(p, v) \
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do { \
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U32TO8_LITTLE((p), U32V((v) )); \
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U32TO8_LITTLE((p) + 4, U32V((v) >> 32)); \
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} while (0)
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#endif
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#define U16TO8_BIG(p, v) \
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do { \
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(p)[0] = U8V((v) ); \
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(p)[1] = U8V((v) >> 8); \
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} while (0)
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#define U32TO8_BIG(p, v) \
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do { \
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(p)[0] = U8V((v) >> 24); \
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(p)[1] = U8V((v) >> 16); \
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(p)[2] = U8V((v) >> 8); \
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(p)[3] = U8V((v) ); \
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} while (0)
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#ifdef ECRYPT_NATIVE64
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#define U64TO8_BIG(p, v) \
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do { \
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(p)[0] = U8V((v) >> 56); \
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(p)[1] = U8V((v) >> 48); \
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(p)[2] = U8V((v) >> 40); \
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(p)[3] = U8V((v) >> 32); \
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(p)[4] = U8V((v) >> 24); \
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(p)[5] = U8V((v) >> 16); \
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(p)[6] = U8V((v) >> 8); \
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(p)[7] = U8V((v) ); \
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} while (0)
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#else
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#define U64TO8_BIG(p, v) \
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do { \
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U32TO8_BIG((p), U32V((v) >> 32)); \
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U32TO8_BIG((p) + 4, U32V((v) )); \
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} while (0)
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#endif
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#endif
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#include "ecrypt-machine.h"
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/* ------------------------------------------------------------------------- */
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#define AT_LEAST_ONE(n) (((n) < 1) ? 1 : (n))
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#define ALIGN(t, v, n) \
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union { t b[n]; MAXT l[AT_LEAST_ONE(n * sizeof(t) / sizeof(MAXT))]; } v
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/* ------------------------------------------------------------------------- */
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#endif
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