linux-imx

/**

 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.

 * All rights reserved.

 *

 * This source code is licensed under the BSD-style license found in the

 * LICENSE file in the root directory of https://github.com/facebook/zstd.

 * An additional grant of patent rights can be found in the PATENTS file in the

 * same directory.

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License version 2 as published by the

 * Free Software Foundation. This program is dual-licensed; you may select

 * either version 2 of the GNU General Public License ("GPL") or BSD license

 * ("BSD").

 */

​

#ifndef MEM_H_MODULE

#define MEM_H_MODULE

​

/*-****************************************

*  Dependencies

******************************************/

#include <asm/unaligned.h>

#include <linux/string.h> /* memcpy */

#include <linux/types.h>  /* size_t, ptrdiff_t */

​

/*-****************************************

*  Compiler specifics

******************************************/

#define ZSTD_STATIC static __inline __attribute__((unused))

​

/*-**************************************************************

*  Basic Types

*****************************************************************/

typedef uint8_t BYTE;

typedef uint16_t U16;

typedef int16_t S16;

typedef uint32_t U32;

typedef int32_t S32;

typedef uint64_t U64;

typedef int64_t S64;

typedef ptrdiff_t iPtrDiff;

typedef uintptr_t uPtrDiff;

​

/*-**************************************************************

*  Memory I/O

*****************************************************************/

ZSTD_STATIC unsigned ZSTD_32bits(void) { return sizeof(size_t) == 4; }

ZSTD_STATIC unsigned ZSTD_64bits(void) { return sizeof(size_t) == 8; }

​

#if defined(__LITTLE_ENDIAN)

#define ZSTD_LITTLE_ENDIAN 1

#else

#define ZSTD_LITTLE_ENDIAN 0

#endif

​

ZSTD_STATIC unsigned ZSTD_isLittleEndian(void) { return ZSTD_LITTLE_ENDIAN; }

​

ZSTD_STATIC U16 ZSTD_read16(const void *memPtr) { return get_unaligned((const U16 *)memPtr); }

​

ZSTD_STATIC U32 ZSTD_read32(const void *memPtr) { return get_unaligned((const U32 *)memPtr); }

​

ZSTD_STATIC U64 ZSTD_read64(const void *memPtr) { return get_unaligned((const U64 *)memPtr); }