lz4_wrapper.c File Reference

#include <commonlib/bsd/compression.h>
#include <commonlib/bsd/helpers.h>
#include <commonlib/bsd/sysincludes.h>
#include <stdint.h>
#include <string.h>
#include "lz4.c.inc"

Include dependency graph for lz4_wrapper.c:

Go to the source code of this file.

Data Structures
struct	lz4_frame_header
struct	lz4_block_header

Macros
#define	FORCE_INLINE   static __always_inline
#define	likely(expr)   __builtin_expect((expr) != 0, 1)
#define	unlikely(expr)   __builtin_expect((expr) != 0, 0)
#define	LZ4F_MAGICNUMBER   0x184D2204
#define	RESERVED0   0x03
#define	HAS_CONTENT_CHECKSUM   0x04
#define	HAS_CONTENT_SIZE   0x08
#define	HAS_BLOCK_CHECKSUM   0x10
#define	INDEPENDENT_BLOCKS   0x20
#define	VERSION   0xC0
#define	VERSION_SHIFT   6
#define	RESERVED1_2   0x8F
#define	MAX_BLOCK_SIZE   0x70
#define	BH_SIZE   0x7FFFFFFF
#define	NOT_COMPRESSED   0x80000000

Typedefs
typedef uint8_t	BYTE
typedef uint16_t	U16
typedef uint32_t	U32
typedef int32_t	S32
typedef uint64_t	U64

Functions
static uint16_t	LZ4_readLE16 (const void *src)
static void	LZ4_copy8 (void *dst, const void *src)
size_t	ulz4fn (const void *src, size_t srcn, void *dst, size_t dstn)
size_t	ulz4f (const void *src, void *dst)

Variables
struct lz4_frame_header	__packed

Macro Definition Documentation

BH_SIZE

#define BH_SIZE   0x7FFFFFFF

Definition at line 87 of file lz4_wrapper.c.

FORCE_INLINE

#define FORCE_INLINE   static __always_inline

Definition at line 57 of file lz4_wrapper.c.

HAS_BLOCK_CHECKSUM

#define HAS_BLOCK_CHECKSUM   0x10

Definition at line 71 of file lz4_wrapper.c.

HAS_CONTENT_CHECKSUM

#define HAS_CONTENT_CHECKSUM   0x04

Definition at line 69 of file lz4_wrapper.c.

HAS_CONTENT_SIZE

#define HAS_CONTENT_SIZE   0x08

Definition at line 70 of file lz4_wrapper.c.

INDEPENDENT_BLOCKS

#define INDEPENDENT_BLOCKS   0x20

Definition at line 72 of file lz4_wrapper.c.

likely

#define likely

(

expr

)

__builtin_expect((expr) != 0, 1)

Definition at line 58 of file lz4_wrapper.c.

LZ4F_MAGICNUMBER

#define LZ4F_MAGICNUMBER   0x184D2204

Definition at line 64 of file lz4_wrapper.c.

MAX_BLOCK_SIZE

#define MAX_BLOCK_SIZE   0x70

Definition at line 77 of file lz4_wrapper.c.

NOT_COMPRESSED

#define NOT_COMPRESSED   0x80000000

Definition at line 88 of file lz4_wrapper.c.

RESERVED0

#define RESERVED0   0x03

Definition at line 68 of file lz4_wrapper.c.

RESERVED1_2

#define RESERVED1_2   0x8F

Definition at line 76 of file lz4_wrapper.c.

unlikely

#define unlikely

(

expr

)

__builtin_expect((expr) != 0, 0)

Definition at line 59 of file lz4_wrapper.c.

VERSION

#define VERSION   0xC0

Definition at line 73 of file lz4_wrapper.c.

VERSION_SHIFT

#define VERSION_SHIFT   6

Definition at line 74 of file lz4_wrapper.c.

Typedef Documentation

BYTE

typedef uint8_t BYTE

Definition at line 51 of file lz4_wrapper.c.

S32

typedef int32_t S32

Definition at line 54 of file lz4_wrapper.c.

U16

typedef uint16_t U16

Definition at line 52 of file lz4_wrapper.c.

U32

typedef uint32_t U32

Definition at line 53 of file lz4_wrapper.c.

U64

typedef uint64_t U64

Definition at line 55 of file lz4_wrapper.c.

Function Documentation

LZ4_copy8()

static void LZ4_copy8 ( void *  dst, const void *  src  )

static

Definition at line 17 of file lz4_wrapper.c.

LZ4_readLE16()

static uint16_t LZ4_readLE16 ( const void *  src )

static

Definition at line 13 of file lz4_wrapper.c.

References le16toh().

Here is the call graph for this function:

ulz4f()

size_t ulz4f	(	const void *	src,
		void *	dst
	)

Definition at line 167 of file lz4_wrapper.c.

References GiB, and ulz4fn().

Referenced by main().

Here is the call graph for this function:

Here is the caller graph for this function:

ulz4fn()

size_t ulz4fn	(	const void *	src,
		size_t	srcn,
		void *	dst,
		size_t	dstn
	)

Definition at line 96 of file lz4_wrapper.c.

References BH_SIZE, lz4_frame_header::block_descriptor, lz4_frame_header::flags, HAS_BLOCK_CHECKSUM, HAS_CONTENT_SIZE, INDEPENDENT_BLOCKS, le32toh(), LZ4F_MAGICNUMBER, lz4_frame_header::magic, memcpy(), MIN, NOT_COMPRESSED, NULL, lz4_block_header::raw, RESERVED0, RESERVED1_2, VERSION, and VERSION_SHIFT.

Referenced by cbfs_load_and_decompress(), decompress_kernel_header(), extract(), load_one_segment(), and ulz4f().

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

__packed

struct lz4_block_header __packed