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#ifndef common_H
#define common_H 1
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#define COMPILER_ASSERT(X) (void) sizeof(char[(X) ? 1 : -1])
#ifdef HAVE_TI_MODE
# if defined(__SIZEOF_INT128__)
typedef unsigned __int128 uint128_t;
# else
typedef unsigned uint128_t __attribute__((mode(TI)));
# endif
#endif
#define ROTL32(X, B) rotl32((X), (B))
static inline uint32_t
rotl32(const uint32_t x, const int b)
{
return (x << b) | (x >> (32 - b));
}
#define ROTL64(X, B) rotl64((X), (B))
static inline uint64_t
rotl64(const uint64_t x, const int b)
{
return (x << b) | (x >> (64 - b));
}
#define ROTR32(X, B) rotr32((X), (B))
static inline uint32_t
rotr32(const uint32_t x, const int b)
{
return (x >> b) | (x << (32 - b));
}
#define ROTR64(X, B) rotr64((X), (B))
static inline uint64_t
rotr64(const uint64_t x, const int b)
{
return (x >> b) | (x << (64 - b));
}
#define LOAD64_LE(SRC) load64_le(SRC)
static inline uint64_t
load64_le(const uint8_t src[8])
{
#ifdef NATIVE_LITTLE_ENDIAN
uint64_t w;
memcpy(&w, src, sizeof w);
return w;
#else
uint64_t w = (uint64_t) src[0];
w |= (uint64_t) src[1] << 8;
w |= (uint64_t) src[2] << 16;
w |= (uint64_t) src[3] << 24;
w |= (uint64_t) src[4] << 32;
w |= (uint64_t) src[5] << 40;
w |= (uint64_t) src[6] << 48;
w |= (uint64_t) src[7] << 56;
return w;
#endif
}
#define STORE64_LE(DST, W) store64_le((DST), (W))
static inline void
store64_le(uint8_t dst[8], uint64_t w)
{
#ifdef NATIVE_LITTLE_ENDIAN
memcpy(dst, &w, sizeof w);
#else
dst[0] = (uint8_t) w; w >>= 8;
dst[1] = (uint8_t) w; w >>= 8;
dst[2] = (uint8_t) w; w >>= 8;
dst[3] = (uint8_t) w; w >>= 8;
dst[4] = (uint8_t) w; w >>= 8;
dst[5] = (uint8_t) w; w >>= 8;
dst[6] = (uint8_t) w; w >>= 8;
dst[7] = (uint8_t) w;
#endif
}
#define LOAD32_LE(SRC) load32_le(SRC)
static inline uint32_t
load32_le(const uint8_t src[4])
{
#ifdef NATIVE_LITTLE_ENDIAN
uint32_t w;
memcpy(&w, src, sizeof w);
return w;
#else
uint32_t w = (uint32_t) src[0];
w |= (uint32_t) src[1] << 8;
w |= (uint32_t) src[2] << 16;
w |= (uint32_t) src[3] << 24;
return w;
#endif
}
#define STORE32_LE(DST, W) store32_le((DST), (W))
static inline void
store32_le(uint8_t dst[4], uint32_t w)
{
#ifdef NATIVE_LITTLE_ENDIAN
memcpy(dst, &w, sizeof w);
#else
dst[0] = (uint8_t) w; w >>= 8;
dst[1] = (uint8_t) w; w >>= 8;
dst[2] = (uint8_t) w; w >>= 8;
dst[3] = (uint8_t) w;
#endif
}
/* ----- */
#define LOAD64_BE(SRC) load64_be(SRC)
static inline uint64_t
load64_be(const uint8_t src[8])
{
#ifdef NATIVE_BIG_ENDIAN
uint64_t w;
memcpy(&w, src, sizeof w);
return w;
#else
uint64_t w = (uint64_t) src[7];
w |= (uint64_t) src[6] << 8;
w |= (uint64_t) src[5] << 16;
w |= (uint64_t) src[4] << 24;
w |= (uint64_t) src[3] << 32;
w |= (uint64_t) src[2] << 40;
w |= (uint64_t) src[1] << 48;
w |= (uint64_t) src[0] << 56;
return w;
#endif
}
#define STORE64_BE(DST, W) store64_be((DST), (W))
static inline void
store64_be(uint8_t dst[8], uint64_t w)
{
#ifdef NATIVE_BIG_ENDIAN
memcpy(dst, &w, sizeof w);
#else
dst[7] = (uint8_t) w; w >>= 8;
dst[6] = (uint8_t) w; w >>= 8;
dst[5] = (uint8_t) w; w >>= 8;
dst[4] = (uint8_t) w; w >>= 8;
dst[3] = (uint8_t) w; w >>= 8;
dst[2] = (uint8_t) w; w >>= 8;
dst[1] = (uint8_t) w; w >>= 8;
dst[0] = (uint8_t) w;
#endif
}
#define LOAD32_BE(SRC) load32_be(SRC)
static inline uint32_t
load32_be(const uint8_t src[4])
{
#ifdef NATIVE_BIG_ENDIAN
uint32_t w;
memcpy(&w, src, sizeof w);
return w;
#else
uint32_t w = (uint32_t) src[3];
w |= (uint32_t) src[2] << 8;
w |= (uint32_t) src[1] << 16;
w |= (uint32_t) src[0] << 24;
return w;
#endif
}
#define STORE32_BE(DST, W) store32_be((DST), (W))
static inline void
store32_be(uint8_t dst[4], uint32_t w)
{
#ifdef NATIVE_BIG_ENDIAN
memcpy(dst, &w, sizeof w);
#else
dst[3] = (uint8_t) w; w >>= 8;
dst[2] = (uint8_t) w; w >>= 8;
dst[1] = (uint8_t) w; w >>= 8;
dst[0] = (uint8_t) w;
#endif
}
#define XOR_BUF(OUT, IN, N) xor_buf((OUT), (IN), (N))
static inline void
xor_buf(unsigned char *out, const unsigned char *in, size_t n)
{
size_t i;
for (i = 0; i < n; i++) {
out[i] ^= in[i];
}
}
#if !defined(__clang__) && !defined(__GNUC__)
# ifdef __attribute__
# undef __attribute__
# endif
# define __attribute__(a)
#endif
#ifndef CRYPTO_ALIGN
# if defined(__INTEL_COMPILER) || defined(_MSC_VER)
# define CRYPTO_ALIGN(x) __declspec(align(x))
# else
# define CRYPTO_ALIGN(x) __attribute__ ((aligned(x)))
# endif
#endif
#if defined(_MSC_VER) && \
(defined(_M_X64) || defined(_M_AMD64) || defined(_M_IX86))
# include <intrin.h>
# define HAVE_INTRIN_H 1
# define HAVE_MMINTRIN_H 1
# define HAVE_EMMINTRIN_H 1
# define HAVE_PMMINTRIN_H 1
# define HAVE_TMMINTRIN_H 1
# define HAVE_SMMINTRIN_H 1
# define HAVE_AVXINTRIN_H 1
# if _MSC_VER >= 1600
# define HAVE_WMMINTRIN_H 1
# endif
# if _MSC_VER >= 1700 && defined(_M_X64)
# define HAVE_AVX2INTRIN_H 1
# endif
#elif defined(HAVE_INTRIN_H)
# include <intrin.h>
#endif
#ifdef HAVE_LIBCTGRIND
extern void ct_poison (const void *, size_t);
extern void ct_unpoison(const void *, size_t);
# define POISON(X, L) ct_poison((X), (L))
# define UNPOISON(X, L) ct_unpoison((X), (L))
#else
# define POISON(X, L) (void) 0
# define UNPOISON(X, L) (void) 0
#endif
#endif
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