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lzo-1.00
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minilzo
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minilzo.c
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1997-07-13
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/* minilzo.c -- mini version of the LZO real-time data compression library
This file is part of the LZO real-time data compression library.
Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
The LZO library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The LZO library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the LZO library; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Markus F.X.J. Oberhumer
markus.oberhumer@jk.uni-linz.ac.at
*/
/*
* NOTE:
* the full LZO package can be found at
* http://www.infosys.tuwien.ac.at/Staff/lux/marco/lzo.html
*/
#ifdef MINILZO_HAVE_CONFIG_H
# include <config.h>
#endif
#undef LZO_HAVE_CONFIG_H
#include "minilzo.h"
#ifdef MINILZO_HAVE_CONFIG_H
# define LZO_HAVE_CONFIG_H
#endif
#define __LZO_IN_MINILZO
#if !defined(LZO_NO_SYS_TYPES_H)
# include <sys/types.h>
#endif
#ifndef __LZO_CONF_H
#define __LZO_CONF_H
#ifndef __LZOCONF_H
# include <lzoconf.h>
#endif
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
# if defined(__TURBOC__) && (__TURBOC__ < 0x452)
# error You need a newer compiler version
# endif
#endif
#if !defined(LZO_HAVE_CONFIG_H)
# include <stddef.h>
# include <string.h>
# include <stdlib.h>
# define HAVE_MEMCMP
# define HAVE_MEMCPY
# define HAVE_MEMMOVE
# define HAVE_MEMSET
#else
# include <sys/types.h>
# if defined(STDC_HEADERS)
# include <string.h>
# include <stdlib.h>
# endif
# if defined(HAVE_STDDEF_H)
# include <stddef.h>
# endif
# if defined(HAVE_MEMORY_H)
# include <memory.h>
# endif
#endif
#if defined(MFX_MEMCMP_BROKEN)
# undef HAVE_MEMCMP
#endif
#undef NDEBUG
#if !defined(LZO_DEBUG)
# define NDEBUG
#endif
#if defined(LZO_DEBUG) || !defined(NDEBUG)
# include <stdio.h>
#endif
#include <assert.h>
#if defined(__BOUNDS_CHECKING_ON)
# include <unchecked.h>
#else
# define BOUNDS_CHECKING_OFF_DURING(stmt) stmt
# define BOUNDS_CHECKING_OFF_IN_EXPR(expr) (expr)
#endif
#if !defined(LZO_UNUSED)
# define LZO_UNUSED(parm) (parm = parm)
#endif
#if !defined(__inline__) && !defined(__GNUC__)
# if defined(__cplusplus)
# define __inline__ inline
# else
# define __inline__
# endif
#endif
#if 1
# define LZO_BYTE(x) ((unsigned char) (x))
#else
# define LZO_BYTE(x) ((unsigned char) ((x) & 0xff))
#endif
#if 0
# define LZO_USHORT(x) ((unsigned short) (x))
#else
# define LZO_USHORT(x) ((unsigned short) ((x) & 0xffff))
#endif
#define LZO_MAX(a,b) ((a) >= (b) ? (a) : (b))
#define LZO_MIN(a,b) ((a) <= (b) ? (a) : (b))
#define lzo_sizeof(type) ((lzo_uint) (sizeof(type)))
#define LZO_HIGH(array) ((lzo_uint) (sizeof(array)/sizeof(*(array))))
#define LZO_SIZE(bits) (1u << (bits))
#define LZO_MASK(bits) (LZO_SIZE(bits) - 1)
#define LZO_LSIZE(bits) (1ul << (bits))
#define LZO_LMASK(bits) (LZO_LSIZE(bits) - 1)
#define LZO_USIZE(bits) ((lzo_uint) 1 << (bits))
#define LZO_UMASK(bits) (LZO_USIZE(bits) - 1)
#define LZO_STYPE_MAX(b) (((1l << (8*(b)-2)) - 1l) + (1l << (8*(b)-2)))
#define LZO_UTYPE_MAX(b) (((1ul << (8*(b)-1)) - 1ul) + (1ul << (8*(b)-1)))
#if !defined(SIZEOF_UNSIGNED)
# if (UINT_MAX == 0xffff)
# define SIZEOF_UNSIGNED 2
# elif (UINT_MAX == 0xffffffffL)
# define SIZEOF_UNSIGNED 4
# else
# define SIZEOF_UNSIGNED 8
# endif
#endif
#if !defined(SIZEOF_UNSIGNED_LONG)
# if (ULONG_MAX == 0xffffffffL)
# define SIZEOF_UNSIGNED_LONG 4
# else
# define SIZEOF_UNSIGNED_LONG 8
# endif
#endif
#if !defined(SIZEOF_SIZE_T)
# define SIZEOF_SIZE_T SIZEOF_UNSIGNED
#endif
#if !defined(SIZE_T_MAX)
# define SIZE_T_MAX LZO_UTYPE_MAX(SIZEOF_SIZE_T)
#endif
#if 1 && defined(__LZO_i386) && (UINT_MAX == 0xffffffffL)
# if !defined(LZO_UNALIGNED_OK_2) && (USHRT_MAX == 0xffff)
# define LZO_UNALIGNED_OK_2
# endif
# if !defined(LZO_UNALIGNED_OK_4) && (LZO_UINT32_MAX == 0xffffffffL)
# define LZO_UNALIGNED_OK_4
# endif
#endif
#if defined(LZO_UNALIGNED_OK_2) || defined(LZO_UNALIGNED_OK_4)
# if !defined(LZO_UNALIGNED_OK)
# define LZO_UNALIGNED_OK
# endif
#endif
#if defined(LZO_ALIGNED_OK_4) && (LZO_UINT32_MAX != 0xffffffffL)
# error LZO_ALIGNED_OK_4 is defined
#endif
#define LZO_LITTLE_ENDIAN 1234
#define LZO_BIG_ENDIAN 4321
#define LZO_PDP_ENDIAN 3412
#if !defined(LZO_BYTE_ORDER)
# if defined(MFX_BYTE_ORDER)
# define LZO_BYTE_ORDER MFX_BYTE_ORDER
# elif defined(__LZO_i386)
# define LZO_BYTE_ORDER LZO_LITTLE_ENDIAN
# elif defined(BYTE_ORDER)
# define LZO_BYTE_ORDER BYTE_ORDER
# elif defined(__BYTE_ORDER)
# define LZO_BYTE_ORDER __BYTE_ORDER
# endif
#endif
#if defined(LZO_BYTE_ORDER)
# if (LZO_BYTE_ORDER != LZO_LITTLE_ENDIAN) && \
(LZO_BYTE_ORDER != LZO_BIG_ENDIAN)
# error invalid LZO_BYTE_ORDER
# endif
#endif
#if defined(LZO_UNALIGNED_OK) && !defined(LZO_BYTE_ORDER)
# error LZO_BYTE_ORDER is not defined
#endif
#define LZO_OPTIMIZE_GNUC_i386_IS_BUGGY
#if defined(NDEBUG) && !defined(LZO_DEBUG) && !defined(__BOUNDS_CHECKING_ON)
# if defined(__GNUC__) && defined(__i386__)
# if !defined(LZO_OPTIMIZE_GNUC_i386_IS_BUGGY)
# define LZO_OPTIMIZE_GNUC_i386
# endif
# endif
#endif
__LZO_EXTERN_C int __lzo_init_done;
__LZO_EXTERN_C const lzo_byte __lzo_copyright[];
__LZO_EXTERN_C const lzo_uint32 _lzo_crc32_table[256];
#define _LZO_STRINGIZE(x) #x
#define _LZO_MEXPAND(x) _LZO_STRINGIZE(x)
#define _LZO_CONCAT2(a,b) a ## b
#define _LZO_CONCAT3(a,b,c) a ## b ## c
#define _LZO_CONCAT4(a,b,c,d) a ## b ## c ## d
#define _LZO_CONCAT5(a,b,c,d,e) a ## b ## c ## d ## e
#define _LZO_ECONCAT2(a,b) _LZO_CONCAT2(a,b)
#define _LZO_ECONCAT3(a,b,c) _LZO_CONCAT3(a,b,c)
#define _LZO_ECONCAT4(a,b,c,d) _LZO_CONCAT4(a,b,c,d)
#define _LZO_ECONCAT5(a,b,c,d,e) _LZO_CONCAT5(a,b,c,d,e)
#ifndef __LZO_PTR_H
#define __LZO_PTR_H
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
# include <dos.h>
# if 1 && defined(__WATCOMC__)
# include <i86.h>
__LZO_EXTERN_C unsigned char _HShift;
# define __LZO_HShift _HShift
# elif 1 && defined(_MSC_VER)
__LZO_EXTERN_C unsigned short __near _AHSHIFT;
# define __LZO_HShift ((unsigned) &_AHSHIFT)
# elif defined(__LZO_WIN16)
# define __LZO_HShift 3
# else
# define __LZO_HShift 12
# endif
# if !defined(_FP_SEG) && defined(FP_SEG)
# define _FP_SEG FP_SEG
# endif
# if !defined(_FP_OFF) && defined(FP_OFF)
# define _FP_OFF FP_OFF
# endif
#endif
#if (UINT_MAX >= 0xffffffffL)
typedef ptrdiff_t lzo_ptrdiff_t;
#else
typedef long lzo_ptrdiff_t;
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(lzo_ptr_t)
# define __LZO_HAVE_PTR_T
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_LONG)
# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_LONG)
typedef unsigned long lzo_ptr_t;
typedef long lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED)
# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED)
typedef unsigned int lzo_ptr_t;
typedef int lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_SHORT)
# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_SHORT)
typedef unsigned short lzo_ptr_t;
typedef short lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(LZO_HAVE_CONFIG_H) || defined(SIZEOF_CHAR_P)
# error no suitable type for lzo_ptr_t
# else
typedef unsigned long lzo_ptr_t;
typedef long lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
#endif
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
#define PTR(a) ((lzo_bytep) (a))
#define PTR_ALIGNED_4(a) ((_FP_OFF(a) & 3) == 0)
#define PTR_ALIGNED2_4(a,b) (((_FP_OFF(a) | _FP_OFF(b)) & 3) == 0)
#else
#define PTR(a) ((lzo_ptr_t) (a))
#define PTR_LINEAR(a) PTR(a)
#define PTR_ALIGNED_4(a) ((PTR_LINEAR(a) & 3) == 0)
#define PTR_ALIGNED2_4(a,b) (((PTR_LINEAR(a) | PTR_LINEAR(b)) & 3) == 0)
#endif
#define PTR_LT(a,b) (PTR(a) < PTR(b))
#define PTR_GE(a,b) (PTR(a) >= PTR(b))
#define PTR_DIFF(a,b) ((lzo_ptrdiff_t) (PTR(a) - PTR(b)))
LZO_EXTERN(lzo_ptr_t)
__lzo_ptr_linear(const lzo_voidp ptr);
typedef union
{
short a_short;
int a_int;
long a_long;
char * a_char_p;
lzo_uint a_lzo_uint;
lzo_uint32 a_lzo_uint32;
lzo_ptrdiff_t a_lzo_ptrdiff_t;
lzo_ptr_t a_lzo_ptr_t;
lzo_bytep a_lzo_bytep;
lzo_bytepp a_lzo_bytepp;
}
lzo_align_t;
#ifdef __cplusplus
}
#endif
#endif
#define LZO_DETERMINISTIC
#define LZO_DICT_USE_PTR
#if 0 || defined(__LZO_DOS16) || defined(__LZO_WIN16)
# undef LZO_DICT_USE_PTR
#endif
#if !defined(lzo_moff_t)
#if 1
#define lzo_moff_t lzo_uint
#define lzo_cmoff_t lzo_uint
#else
#define lzo_moff_t lzo_ptrdiff_t
#define lzo_cmoff_t lzo_ptrdiff_t
#endif
#endif
#endif
LZO_PUBLIC(lzo_ptr_t)
__lzo_ptr_linear(const lzo_voidp ptr)
{
lzo_ptr_t p;
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
p = (((lzo_ptr_t)(_FP_SEG(ptr))) << (16 - __LZO_HShift)) + (_FP_OFF(ptr));
#else
p = PTR_LINEAR(ptr);
#endif
return p;
}
LZO_PUBLIC(unsigned)
__lzo_align_gap(const lzo_voidp ptr, lzo_uint size)
{
lzo_ptr_t p, s, n;
assert(size > 0);
p = __lzo_ptr_linear(ptr);
s = (lzo_ptr_t) (size - 1);
#if 0
assert((size & (size - 1)) == 0);
n = ((p + s) & ~s) - p;
#else
n = (((p + s) / size) * size) - p;
#endif
assert((long)n >= 0);
assert(n <= s);
return (unsigned)n;
}
#ifndef __LZO_UTIL_H
#define __LZO_UTIL_H
#ifndef __LZO_CONF_H
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if 1 && defined(HAVE_MEMCPY)
#if !defined(__LZO_DOS16) && !defined(__LZO_WIN16)
#define MEMCPY8_DS(dest,src,len) \
memcpy(dest,src,len); \
dest += len; \
src += len
#endif
#endif
#if !defined(MEMCPY8_DS)
#define MEMCPY8_DS(dest,src,len) \
{ register lzo_uint __l = (len) / 8; \
do { \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
} while (--__l > 0); }
#endif
#define MEMCPY_DS(dest,src,len) \
do *dest++ = *src++; \
while (--len > 0)
#define MEMMOVE_DS(dest,src,len) \
do *dest++ = *src++; \
while (--len > 0)
#if defined(LZO_OPTIMIZE_GNUC_i386)
#define BZERO8_PTR(s,n) \
__asm__ __volatile__( \
"movl %0,%%eax \n" \
"movl %1,%%edi \n" \
"movl %2,%%ecx \n" \
"cld \n" \
"rep \n" \
"stosl %%eax,(%%edi) \n" \
: \
:"g" (0),"g" (s),"g" (n) \
:"eax","edi","ecx", "memory", "cc" \
)
#elif (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMSET)
#define BZERO8_PTR(s,n) \
memset((lzo_voidp)(s),0,(n)*sizeof(lzo_byte *))
#else
#define BZERO8_PTR(s,n) \
lzo_memset((lzo_voidp)(s),0,(n)*lzo_sizeof(lzo_byte *))
#endif
#if 0
#if defined(__GNUC__) && defined(__i386__)
unsigned char lzo_rotr8(unsigned char value, int shift);
extern __inline__ unsigned char lzo_rotr8(unsigned char value, int shift)
{
unsigned char result;
__asm__ __volatile__ ("movb %b1, %b0; rorb %b2, %b0"
: "=a"(result) : "g"(value), "c"(shift));
return result;
}
unsigned short lzo_rotr16(unsigned short value, int shift);
extern __inline__ unsigned short lzo_rotr16(unsigned short value, int shift)
{
unsigned short result;
__asm__ __volatile__ ("movw %b1, %b0; rorw %b2, %b0"
: "=a"(result) : "g"(value), "c"(shift));
return result;
}
#endif
#endif
#ifdef __cplusplus
}
#endif
#endif
LZO_PUBLIC(lzo_bool)
lzo_assert(int expr)
{
return (expr) ? 1 : 0;
}
/* If you use the LZO library in a product, you *must* keep this
* copyright string in the executable of your product.
*/
const lzo_byte __lzo_copyright[] =
"\n\n\n"
"LZO real-time data compression library.\n"
"Copyright (C) 1996, 1997 Markus Franz Xaver Johannes Oberhumer\n"
"<markus.oberhumer@jk.uni-linz.ac.at>\n"
"http://www.infosys.tuwien.ac.at/Staff/lux/marco/lzo.html\n"
"\n"
"LZO version: v" LZO_VERSION_STRING ", " LZO_VERSION_DATE "\n"
"LZO build date: " __DATE__ " " __TIME__ "\n\n"
"LZO special compilation options:\n"
#ifdef __cplusplus
" __cplusplus\n"
#endif
#ifdef __pic__
" __pic__\n"
#endif
#ifdef __PIC__
" __PIC__\n"
#endif
#if (UINT_MAX < 0xffffffffL)
" 16BIT\n"
#endif
#if (LZO_UINT_MAX < 0xffffffffL)
" LZO_16BIT\n"
#endif
#if (UINT_MAX > 0xffffffffL)
" UINT_MAX=" _LZO_MEXPAND(UINT_MAX) "\n"
#endif
#if (ULONG_MAX > 0xffffffffL)
" UINT_MAX=" _LZO_MEXPAND(ULONG_MAX) "\n"
#endif
#if defined(LZO_BYTE_ORDER)
" LZO_BYTE_ORDER=" _LZO_MEXPAND(LZO_BYTE_ORDER) "\n"
#endif
#if defined(LZO_UNALIGNED_OK_2)
" LZO_UNALIGNED_OK_2\n"
#endif
#if defined(LZO_UNALIGNED_OK_4)
" LZO_UNALIGNED_OK_4\n"
#endif
#if defined(LZO_ALIGNED_OK_4)
" LZO_ALIGNED_OK_4\n"
#endif
#if defined(LZO_DICT_USE_PTR)
" LZO_DICT_USE_PTR\n"
#endif
#if defined(__LZO_IN_MINILZO)
" __LZO_IN_MINILZO\n"
#endif
"\n\n"
"$Id: LZO " LZO_VERSION_STRING " built " __DATE__ " " __TIME__
#if defined(__GNUC__) && defined(__VERSION__)
" by gcc " __VERSION__
#elif defined(__BORLANDC__)
" by Borland C " _LZO_MEXPAND(__BORLANDC__)
#elif defined(_MSC_VER)
" by Microsoft C " _LZO_MEXPAND(_MSC_VER)
#elif defined(__PUREC__)
" by Pure C " _LZO_MEXPAND(__PUREC__)
#elif defined(__SC__)
" by Symantec C " _LZO_MEXPAND(__SC__)
#elif defined(__TURBOC__)
" by Turbo C " _LZO_MEXPAND(__TURBOC__)
#elif defined(__WATCOMC__)
" by Watcom C " _LZO_MEXPAND(__WATCOMC__)
#endif
" $\n"
"$Copyright: LZO (C) 1996, 1997 Markus Franz Xaver Johannes Oberhumer $\n";
LZO_PUBLIC(unsigned)
lzo_version(void)
{
return LZO_VERSION;
}
LZO_PUBLIC(const char *)
lzo_version_string(void)
{
return LZO_VERSION_STRING;
}
LZO_PUBLIC(const char *)
lzo_version_date(void)
{
return LZO_VERSION_DATE;
}
LZO_PUBLIC(const lzo_charp)
_lzo_version_string(void)
{
return LZO_VERSION_STRING;
}
LZO_PUBLIC(const lzo_charp)
_lzo_version_date(void)
{
return LZO_VERSION_DATE;
}
#define LZO_BASE 65521u
#define LZO_NMAX 5552
#define LZO_DO1(buf,i) {s1 += buf[i]; s2 += s1;}
#define LZO_DO2(buf,i) LZO_DO1(buf,i); LZO_DO1(buf,i+1);
#define LZO_DO4(buf,i) LZO_DO2(buf,i); LZO_DO2(buf,i+2);
#define LZO_DO8(buf,i) LZO_DO4(buf,i); LZO_DO4(buf,i+4);
#define LZO_DO16(buf,i) LZO_DO8(buf,i); LZO_DO8(buf,i+8);
LZO_PUBLIC(lzo_uint32)
lzo_adler32(lzo_uint32 adler, const lzo_byte *buf, lzo_uint len)
{
lzo_uint32 s1 = adler & 0xffff;
lzo_uint32 s2 = (adler >> 16) & 0xffff;
int k;
if (buf == NULL)
return 1;
while (len > 0)
{
k = len < LZO_NMAX ? (int) len : LZO_NMAX;
len -= k;
if (k >= 16) do
{
LZO_DO16(buf,0);
buf += 16;
k -= 16;
} while (k >= 16);
if (k != 0) do
{
s1 += *buf++;
s2 += s1;
} while (--k > 0);
s1 %= LZO_BASE;
s2 %= LZO_BASE;
}
return (s2 << 16) | s1;
}
LZO_PUBLIC(int)
lzo_memcmp(const lzo_voidp s1, const lzo_voidp s2, lzo_uint len)
{
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMCMP)
return memcmp(s1,s2,len);
#else
const lzo_byte *p1 = (const lzo_byte *) s1;
const lzo_byte *p2 = (const lzo_byte *) s2;
int d;
if (len > 0) do
{
d = *p1 - *p2;
if (d != 0)
return d;
p1++;
p2++;
}
while (--len > 0);
return 0;
#endif
}
LZO_PUBLIC(lzo_voidp)
lzo_memcpy(lzo_voidp dest, const lzo_voidp src, lzo_uint len)
{
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMCPY)
return memcpy(dest,src,len);
#else
lzo_byte *p1 = (lzo_byte *) dest;
const lzo_byte *p2 = (const lzo_byte *) src;
if (len <= 0 || p1 == p2)
return dest;
do
*p1++ = *p2++;
while (--len > 0);
return dest;
#endif
}
#if !defined(__LZO_IN_MINILZO)
LZO_PUBLIC(lzo_voidp)
lzo_memmove(lzo_voidp dest, const lzo_voidp src, lzo_uint len)
{
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMMOVE)
return memmove(dest,src,len);
#else
lzo_byte *p1 = (lzo_byte *) dest;
const lzo_byte *p2 = (const lzo_byte *) src;
if (len <= 0 || p1 == p2)
return dest;
if (p1 < p2)
{
do
*p1++ = *p2++;
while (--len > 0);
}
else
{
p1 += len;
p2 += len;
do
*--p1 = *--p2;
while (--len > 0);
}
return dest;
#endif
}
#endif
LZO_PUBLIC(lzo_voidp)
lzo_memset(lzo_voidp s, int c, lzo_uint len)
{
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMSET)
return memset(s,c,len);
#else
lzo_byte *p = (lzo_byte *) s;
if (len > 0) do
*p++ = LZO_BYTE(c);
while (--len > 0);
return s;
#endif
}
#include <stdio.h>
#if 0
# define IS_SIGNED(type) (((type) (1ul << (8 * sizeof(type) - 1))) < 0)
# define IS_UNSIGNED(type) (((type) (1ul << (8 * sizeof(type) - 1))) > 0)
#else
# define IS_SIGNED(type) (((type) (-1)) < ((type) 0))
# define IS_UNSIGNED(type) (((type) (-1)) > ((type) 0))
#endif
static lzo_bool schedule_insns_bug(void);
static lzo_bool strength_reduce_bug(int *);
#if 0 || defined(LZO_DEBUG)
static lzo_bool __lzo_assert_fail(const char *s, unsigned line)
{
fprintf(stderr,"LZO assertion failed in line %u: '%s'\n",line,s);
return 0;
}
# define __lzo_assert(x) ((x) ? 1 : __lzo_assert_fail(#x,__LINE__))
#else
# define __lzo_assert(x) ((x) ? 1 : 0)
#endif
static lzo_bool basic_integral_check(void)
{
lzo_bool r = 1;
lzo_bool sanity;
r &= __lzo_assert(CHAR_BIT == 8);
r &= __lzo_assert(sizeof(char) == 1);
r &= __lzo_assert(sizeof(lzo_uint32) >= 4);
r &= __lzo_assert(sizeof(lzo_uint32) >= sizeof(unsigned));
r &= __lzo_assert(sizeof(lzo_uint) >= sizeof(unsigned));
#if defined(SIZEOF_UNSIGNED)
r &= __lzo_assert(SIZEOF_UNSIGNED == sizeof(unsigned));
#endif
#if defined(SIZEOF_UNSIGNED_LONG)
r &= __lzo_assert(SIZEOF_UNSIGNED_LONG == sizeof(unsigned long));
#endif
#if defined(SIZEOF_UNSIGNED_SHORT)
r &= __lzo_assert(SIZEOF_UNSIGNED_SHORT == sizeof(unsigned short));
#endif
#if !defined(__LZO_IN_MINILZO)
#if defined(SIZEOF_SIZE_T)
r &= __lzo_assert(SIZEOF_SIZE_T == sizeof(size_t));
#endif
#endif
sanity = IS_UNSIGNED(unsigned short) && IS_UNSIGNED(unsigned) &&
IS_UNSIGNED(unsigned long) &&
IS_SIGNED(short) && IS_SIGNED(int) && IS_SIGNED(long);
if (sanity)
{
r &= __lzo_assert(IS_UNSIGNED(lzo_uint32));
r &= __lzo_assert(IS_UNSIGNED(lzo_uint));
r &= __lzo_assert(IS_SIGNED(lzo_int32));
r &= __lzo_assert(IS_SIGNED(lzo_int));
r &= __lzo_assert(INT_MAX == LZO_STYPE_MAX(sizeof(int)));
r &= __lzo_assert(UINT_MAX == LZO_UTYPE_MAX(sizeof(unsigned)));
r &= __lzo_assert(LONG_MAX == LZO_STYPE_MAX(sizeof(long)));
r &= __lzo_assert(ULONG_MAX == LZO_UTYPE_MAX(sizeof(unsigned long)));
r &= __lzo_assert(SHRT_MAX == LZO_STYPE_MAX(sizeof(short)));
r &= __lzo_assert(USHRT_MAX == LZO_UTYPE_MAX(sizeof(unsigned short)));
r &= __lzo_assert(LZO_UINT32_MAX == LZO_UTYPE_MAX(sizeof(lzo_uint32)));
r &= __lzo_assert(LZO_UINT_MAX == LZO_UTYPE_MAX(sizeof(lzo_uint)));
#if !defined(__LZO_IN_MINILZO)
r &= __lzo_assert(SIZE_T_MAX == LZO_UTYPE_MAX(sizeof(size_t)));
#endif
}
#if 0
r &= __lzo_assert(LZO_BYTE(257) == 1);
r &= __lzo_assert(LZO_USHORT(65537L) == 1);
#endif
return r;
}
static lzo_bool basic_ptr_check(void)
{
lzo_bool r = 1;
lzo_bool sanity;
r &= __lzo_assert(sizeof(lzo_voidp) == sizeof(lzo_byte *));
r &= __lzo_assert(sizeof(lzo_voidp) == sizeof(lzo_voidpp));
r &= __lzo_assert(sizeof(lzo_voidp) == sizeof(lzo_bytepp));
r &= __lzo_assert(sizeof(lzo_voidp) >= sizeof(lzo_uint));
r &= __lzo_assert(sizeof(lzo_ptr_t) == sizeof(lzo_voidp));
r &= __lzo_assert(sizeof(lzo_ptr_t) >= sizeof(lzo_uint));
r &= __lzo_assert(sizeof(lzo_ptrdiff_t) >= 4);
r &= __lzo_assert(sizeof(lzo_ptrdiff_t) >= sizeof(ptrdiff_t));
#if defined(SIZEOF_CHAR_P)
r &= __lzo_assert(SIZEOF_CHAR_P == sizeof(char *));
#endif
#if defined(SIZEOF_PTRDIFF_T)
r &= __lzo_assert(SIZEOF_PTRDIFF_T == sizeof(ptrdiff_t));
#endif
sanity = IS_UNSIGNED(unsigned short) && IS_UNSIGNED(unsigned) &&
IS_UNSIGNED(unsigned long) &&
IS_SIGNED(short) && IS_SIGNED(int) && IS_SIGNED(long);
if (sanity)
{
r &= __lzo_assert(IS_UNSIGNED(lzo_ptr_t));
r &= __lzo_assert(IS_SIGNED(lzo_ptrdiff_t));
r &= __lzo_assert(IS_SIGNED(lzo_sptr_t));
}
return r;
}
static lzo_bool ptr_check(void)
{
lzo_bool r = 1;
int i;
char _wrkmem[10 * sizeof(lzo_byte *) + sizeof(lzo_align_t)];
lzo_byte *wrkmem;
const lzo_bytepp dict;
unsigned char x[4 * sizeof(lzo_align_t)];
long d;
for (i = 0; i < (int) sizeof(x); i++)
x[i] = LZO_BYTE(i);
wrkmem = (lzo_byte *) LZO_ALIGN(_wrkmem,sizeof(lzo_align_t));
dict = (const lzo_bytepp) wrkmem;
d = (long) ((lzo_bytep) dict - (lzo_bytep) _wrkmem);
r &= __lzo_assert(d >= 0);
r &= __lzo_assert(d < (long) sizeof(lzo_align_t));
if (r == 1)
{
for (i = 0; i < 8; i++)
r &= __lzo_assert((lzo_voidp) (&dict[i]) == (lzo_voidp) (&wrkmem[i * sizeof(lzo_byte *)]));
}
r &= __lzo_assert(NULL == 0);
if (r == 1)
{
for (i = 0; i < 10; i++)
dict[i] = wrkmem;
BZERO8_PTR(dict+1,8);
r &= __lzo_assert(dict[0] == wrkmem);
for (i = 1; i < 9; i++)
r &= __lzo_assert(dict[i] == NULL);
r &= __lzo_assert(dict[9] == wrkmem);
}
if (r == 1)
{
unsigned k = 1;
const unsigned n = (unsigned) sizeof(lzo_uint32);
lzo_byte *p0;
lzo_byte *p1;
k += __lzo_align_gap(&x[k],n);
p0 = (lzo_bytep) &x[k];
#if defined(PTR_LINEAR)
r &= __lzo_assert((PTR_LINEAR(p0) & (n-1)) == 0);
#else
r &= __lzo_assert(n == 4);
r &= __lzo_assert(PTR_ALIGNED_4(p0));
#endif
r &= __lzo_assert(k >= 1);
p1 = (lzo_bytep) &x[1];
r &= __lzo_assert(PTR_GE(p0,p1));
r &= __lzo_assert(k < 1+n);
p1 = (lzo_bytep) &x[1+n];
r &= __lzo_assert(PTR_LT(p0,p1));
if (r == 1)
{
lzo_uint32 v0 = * (lzo_uint32 *) &x[k];
lzo_uint32 v1 = * (lzo_uint32 *) &x[k+n];
r &= __lzo_assert(v0 > 0);
r &= __lzo_assert(v1 > 0);
}
}
return r;
}
LZO_PUBLIC(int)
_lzo_config_check(void)
{
lzo_bool r = 1;
int i;
lzo_uint32 adler;
union {
lzo_uint32 a;
unsigned short b;
lzo_uint32 aa[4];
unsigned char x[4*sizeof(lzo_align_t)];
} u;
#if 0
r &= __lzo_assert((const void *)&u == (const void *)&u.a);
r &= __lzo_assert((const void *)&u == (const void *)&u.b);
r &= __lzo_assert((const void *)&u == (const void *)&u.x[0]);
r &= __lzo_assert((const void *)&u == (const void *)&u.aa[0]);
#endif
r &= basic_integral_check();
r &= basic_ptr_check();
if (r != 1)
return LZO_E_ERROR;
for (i = 0; i < (int) sizeof(u.x); i++)
u.x[i] = LZO_BYTE(i);
#if 0
r &= __lzo_assert( (int) (unsigned char) ((char) -1) == 255);
#endif
#if defined(LZO_BYTE_ORDER)
if (r == 1)
{
# if (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
lzo_uint32 a = (lzo_uint32) (u.a & 0xffffffffL);
unsigned short b = (unsigned short) (u.b & 0xffff);
r &= __lzo_assert(a == 0x03020100L);
r &= __lzo_assert(b == 0x0100);
# elif (LZO_BYTE_ORDER == LZO_BIG_ENDIAN)
lzo_uint32 a = u.a >> (8 * sizeof(u.a) - 32);
unsigned short b = u.b >> (8 * sizeof(u.b) - 16);
r &= __lzo_assert(a == 0x00010203L);
r &= __lzo_assert(b == 0x0001);
# else
# error invalid LZO_BYTE_ORDER
# endif
}
#endif
#if defined(LZO_UNALIGNED_OK_2)
r &= __lzo_assert(sizeof(short) == 2);
if (r == 1)
{
unsigned short b[4];
for (i = 0; i < 4; i++)
b[i] = * (const unsigned short *) &u.x[i];
# if (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
r &= __lzo_assert(b[0] == 0x0100);
r &= __lzo_assert(b[1] == 0x0201);
r &= __lzo_assert(b[2] == 0x0302);
r &= __lzo_assert(b[3] == 0x0403);
# elif (LZO_BYTE_ORDER == LZO_BIG_ENDIAN)
r &= __lzo_assert(b[0] == 0x0001);
r &= __lzo_assert(b[1] == 0x0102);
r &= __lzo_assert(b[2] == 0x0203);
r &= __lzo_assert(b[3] == 0x0304);
# endif
}
#endif
#if defined(LZO_UNALIGNED_OK_4)
r &= __lzo_assert(sizeof(lzo_uint32) == 4);
if (r == 1)
{
lzo_uint32 a[4];
for (i = 0; i < 4; i++)
a[i] = * (const lzo_uint32 *) &u.x[i];
# if (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
r &= __lzo_assert(a[0] == 0x03020100L);
r &= __lzo_assert(a[1] == 0x04030201L);
r &= __lzo_assert(a[2] == 0x05040302L);
r &= __lzo_assert(a[3] == 0x06050403L);
# elif (LZO_BYTE_ORDER == LZO_BIG_ENDIAN)
r &= __lzo_assert(a[0] == 0x00010203L);
r &= __lzo_assert(a[1] == 0x01020304L);
r &= __lzo_assert(a[2] == 0x02030405L);
r &= __lzo_assert(a[3] == 0x03040506L);
# endif
}
#endif
#if defined(LZO_ALIGNED_OK_4)
r &= __lzo_assert(sizeof(lzo_uint32) == 4);
#endif
#if !defined(LZO_DICT_USE_PTR)
r &= __lzo_assert(sizeof(lzo_bytep) >= sizeof(lzo_uint));
#endif
if (r == 1)
{
adler = lzo_adler32(0, NULL, 0);
adler = lzo_adler32(adler, __lzo_copyright, 200);
r &= __lzo_assert(adler == 0x918C45AAL);
}
if (r == 1)
{
r &= __lzo_assert(!schedule_insns_bug());
}
if (r == 1)
{
static int x[3];
static unsigned xn = 3;
register unsigned j;
for (j = 0; j < xn; j++)
x[j] = (int)j - 3;
r &= __lzo_assert(!strength_reduce_bug(x));
}
if (r == 1)
{
r &= ptr_check();
}
return r == 1 ? LZO_E_OK : LZO_E_ERROR;
}
static lzo_bool schedule_insns_bug(void)
{
#if 1
const int clone[] = {1, 2, 0};
const int *q;
q = clone;
if (*q)
return 0;
return 1;
#else
return 0;
#endif
}
static lzo_bool strength_reduce_bug(int *x)
{
return x[0] != -3 || x[1] != -2 || x[2] != -1;
}
int __lzo_init_done = 0;
LZO_PUBLIC(int)
__lzo_init(unsigned v,int s1,int s2,int s3,int s4,int s5,int s6,int s7)
{
int r;
__lzo_init_done = 1;
#if 0
if (v != LZO_VERSION)
return LZO_E_ERROR;
#else
if (v == 0)
return LZO_E_ERROR;
#endif
r = (s1 == (int) sizeof(short)) &&
(s2 == (int) sizeof(int)) &&
(s3 == (int) sizeof(long)) &&
(s4 == (int) sizeof(lzo_uint32)) &&
(s5 == (int) sizeof(lzo_uint)) &&
(s6 == (int) sizeof(lzo_voidp)) &&
(s7 == (int) sizeof(lzo_compress_t));
if (!r)
return LZO_E_ERROR;
r = _lzo_config_check();
if (r != LZO_E_OK)
return r;
return r;
}
#define LZO_NEED_DICT_H
#define D_BITS 14
#ifndef __LZO_CONFIG1X_H
#define __LZO_CONFIG1X_H
#if !defined(LZO1X) && !defined(LZO1Y)
# define LZO1X
#endif
#if !defined(__LZO_IN_MINILZO)
#include <lzo1x.h>
#endif
#define LZO_EOF_CODE
#undef LZO_DETERMINISTIC
#define M1_MAX_OFFSET 0x0400
#ifndef M2_MAX_OFFSET
#define M2_MAX_OFFSET 0x0800
#endif
#define M3_MAX_OFFSET 0x4000
#define M4_MAX_OFFSET 0xbfff
#define MX_MAX_OFFSET (M1_MAX_OFFSET + M2_MAX_OFFSET)
#define M1_MIN_LEN 2
#define M1_MAX_LEN 2
#define M2_MIN_LEN 3
#ifndef M2_MAX_LEN
#define M2_MAX_LEN 8
#endif
#define M3_MIN_LEN 3
#define M3_MAX_LEN 33
#define M4_MIN_LEN 3
#define M4_MAX_LEN 9
#define M1_MARKER 0
#define M2_MARKER 64
#define M3_MARKER 32
#define M4_MARKER 16
#ifndef MIN_LOOKAHEAD
#define MIN_LOOKAHEAD (M2_MAX_LEN + 1)
#endif
#if defined(LZO_NEED_DICT_H)
#ifndef LZO_HASH
#define LZO_HASH LZO_HASH_LZO_INCREMENTAL_B
#endif
#define DL_MIN_LEN M2_MIN_LEN
#ifndef __LZO_DICT_H
#define __LZO_DICT_H
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(D_BITS) && defined(DBITS)
# define D_BITS DBITS
#endif
#if !defined(D_BITS)
# error D_BITS is not defined
#endif
#if (D_BITS < 16)
# define D_SIZE LZO_SIZE(D_BITS)
# define D_MASK LZO_MASK(D_BITS)
#else
# define D_SIZE LZO_USIZE(D_BITS)
# define D_MASK LZO_UMASK(D_BITS)
#endif
#if !defined(DD_BITS)
# define DD_BITS 0
#endif
#define DD_SIZE LZO_SIZE(DD_BITS)
#define DD_MASK LZO_MASK(DD_BITS)
#if !defined(DL_BITS)
# define DL_BITS (D_BITS - DD_BITS)
#endif
#if (DL_BITS < 16)
# define DL_SIZE LZO_SIZE(DL_BITS)
# define DL_MASK LZO_MASK(DL_BITS)
#else
# define DL_SIZE LZO_USIZE(DL_BITS)
# define DL_MASK LZO_UMASK(DL_BITS)
#endif
#if (D_BITS != DL_BITS + DD_BITS)
# error D_BITS does not match
#endif
#if (D_BITS < 8 || D_BITS > 18)
# error invalid D_BITS
#endif
#if (DL_BITS < 8 || DL_BITS > 18)
# error invalid DL_BITS
#endif
#if (DD_BITS < 0 || DD_BITS > 6)
# error invalid DD_BITS
#endif
#if !defined(DL_MIN_LEN)
# define DL_MIN_LEN 3
#endif
#if !defined(DL_SHIFT)
# define DL_SHIFT ((DL_BITS + (DL_MIN_LEN - 1)) / DL_MIN_LEN)
#endif
#define LZO_HASH_GZIP 1
#define LZO_HASH_GZIP_INCREMENTAL 2
#define LZO_HASH_LZO_INCREMENTAL_A 3
#define LZO_HASH_LZO_INCREMENTAL_B 4
#if !defined(LZO_HASH)
# error choose a hashing strategy
#endif
#if (DL_MIN_LEN == 3)
# define _DV2_A(p,shift1,shift2) \
(((( (lzo_uint32)(p[0]) << shift1) ^ p[1]) << shift2) ^ p[2])
# define _DV2_B(p,shift1,shift2) \
(((( (lzo_uint32)(p[2]) << shift1) ^ p[1]) << shift2) ^ p[0])
#elif (DL_MIN_LEN == 2)
# define _DV2_A(p,shift1,shift2) \
(( (lzo_uint32)(p[0]) << shift1) ^ p[1])
# define _DV2_B(p,shift1,shift2) \
(( (lzo_uint32)(p[1]) << shift1) ^ p[2])
#else
# error invalid DL_MIN_LEN
#endif
#define _DV_A(p,shift) _DV2_A(p,shift,shift)
#define _DV_B(p,shift) _DV2_B(p,shift,shift)
#if (LZO_HASH == LZO_HASH_GZIP)
# define _DINDEX(dv,p) (_DV_A((p),DL_SHIFT))
#elif (LZO_HASH == LZO_HASH_GZIP_INCREMENTAL)
# define __LZO_HASH_INCREMENTAL
# define DVAL_FIRST(dv,p) dv = _DV_A((p),DL_SHIFT)
# define DVAL_NEXT(dv,p) dv = (((dv) << DL_SHIFT) ^ p[2])
# define _DINDEX(dv,p) (dv)
# define DVAL_LOOKAHEAD DL_MIN_LEN
#elif (LZO_HASH == LZO_HASH_LZO_INCREMENTAL_A)
# define __LZO_HASH_INCREMENTAL
# define DVAL_FIRST(dv,p) dv = _DV_A((p),5)
# define DVAL_NEXT(dv,p) \
dv ^= (lzo_uint32)(p[-1]) << (2*5); dv = (((dv) << 5) ^ p[2])
# define _DINDEX(dv,p) ((0x9f5f * (dv)) >> 5)
# define DVAL_LOOKAHEAD DL_MIN_LEN
#elif (LZO_HASH == LZO_HASH_LZO_INCREMENTAL_B)
# define __LZO_HASH_INCREMENTAL
# define DVAL_FIRST(dv,p) dv = _DV_B((p),5)
# define DVAL_NEXT(dv,p) \
dv ^= p[-1]; dv = (((dv) >> 5) ^ ((lzo_uint32)(p[2]) << (2*5)))
# define _DINDEX(dv,p) ((0x9f5f * (dv)) >> 5)
# define DVAL_LOOKAHEAD DL_MIN_LEN
#else
# error choose a hashing strategy
#endif
#ifndef DINDEX
#define DINDEX(dv,p) (((_DINDEX(dv,p)) & DL_MASK) << DD_BITS)
#endif
#if !defined(__LZO_HASH_INCREMENTAL)
# define DVAL_FIRST(dv,p) ((void) 0)
# define DVAL_NEXT(dv,p) ((void) 0)
# define DVAL_LOOKAHEAD 0
#endif
#if !defined(DVAL_ASSERT)
#if defined(__LZO_HASH_INCREMENTAL) && !defined(NDEBUG)
static void DVAL_ASSERT(lzo_uint32 dv, const lzo_byte *p)
{
lzo_uint32 df;
DVAL_FIRST(df,(p));
assert(DINDEX(dv,p) == DINDEX(df,p));
}
#else
# define DVAL_ASSERT(dv,p) ((void) 0)
#endif
#endif
#if defined(LZO_DICT_USE_PTR)
# define lzo_dict_p const lzo_bytepp
# define DENTRY(p,in) (p)
# define GINDEX(m_pos,m_off,dict,dindex,in) m_pos = dict[dindex]
#else
# define lzo_dict_p lzo_uintp
# define DENTRY(p,in) ((lzo_uint) ((p)-(in)))
# define GINDEX(m_pos,m_off,dict,dindex,in) m_off = dict[dindex]
#endif
#if (DD_BITS == 0)
# define UPDATE_D(dict,cycle,dv,p,in) dict[ DINDEX(dv,p) ] = DENTRY(p,in)
# define UPDATE_I(dict,cycle,index,p,in) dict[index] = DENTRY(p,in)
# define UPDATE_P(ptr,cycle,p,in) (ptr)[0] = DENTRY(p,in)
#else
# define UPDATE_D(dict,cycle,dv,p,in) \
dict[ DINDEX(dv,p) + cycle++ ] = DENTRY(p,in); cycle &= DD_MASK
# define UPDATE_I(dict,cycle,index,p,in) \
dict[ (index) + cycle++ ] = DENTRY(p,in); cycle &= DD_MASK
# define UPDATE_P(ptr,cycle,p,in) \
(ptr) [ cycle++ ] = DENTRY(p,in); cycle &= DD_MASK
#endif
#if defined(LZO_DICT_USE_PTR)
#define LZO_CHECK_MPOS_DET(m_pos,m_off,in,ip,max_offset) \
(m_pos == NULL || (m_off = (lzo_moff_t) (ip - m_pos)) > max_offset)
#define LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,max_offset) \
(BOUNDS_CHECKING_OFF_IN_EXPR( \
(PTR_LT(m_pos,in) || \
(lzo_cmoff_t) (m_off = (lzo_moff_t) PTR_DIFF(ip,m_pos)) <= 0 || \
m_off > max_offset) ))
#else
#define LZO_CHECK_MPOS_DET(m_pos,m_off,in,ip,max_offset) \
(m_off == 0 || \
((m_off = (lzo_moff_t) ((ip)-(in)) - m_off) > max_offset) || \
(m_pos = (ip) - (m_off), 0) )
#define LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,max_offset) \
( (lzo_cmoff_t) ((m_off = (lzo_moff_t) ((ip)-(in)) - m_off) <= 0) || \
(m_off > max_offset) || (m_pos = (ip) - (m_off), 0) )
#endif
#if defined(LZO_DETERMINISTIC)
# define LZO_CHECK_MPOS LZO_CHECK_MPOS_DET
#else
# define LZO_CHECK_MPOS LZO_CHECK_MPOS_NON_DET
#endif
#ifdef __cplusplus
}
#endif
#endif
#endif
#endif
#define DO_COMPRESS lzo1x_1_compress
static
int do_compress ( const lzo_byte *in , lzo_uint in_len,
lzo_byte *out, lzo_uint *out_len,
lzo_voidp wrkmem )
{
#if 1 && defined(__GNUC__) && defined(__i386__)
register const lzo_byte *ip __asm__("%esi");
#else
register const lzo_byte *ip;
#endif
lzo_uint32 dv;
lzo_byte *op;
const lzo_byte * const in_end = in + in_len;
const lzo_byte * const ip_end = in + in_len - M2_MAX_LEN - 5;
const lzo_byte *ii;
lzo_dict_p const dict = (lzo_dict_p) wrkmem;
op = out;
ip = in;
ii = ip;
DVAL_FIRST(dv,ip); UPDATE_D(dict,cycle,dv,ip,in); ip++;
DVAL_NEXT(dv,ip); UPDATE_D(dict,cycle,dv,ip,in); ip++;
DVAL_NEXT(dv,ip); UPDATE_D(dict,cycle,dv,ip,in); ip++;
DVAL_NEXT(dv,ip); UPDATE_D(dict,cycle,dv,ip,in); ip++;
while (1)
{
#if 1 && defined(__GNUC__) && defined(__i386__)
register const lzo_byte *m_pos __asm__("%edi");
#else
register const lzo_byte *m_pos;
#endif
lzo_uint m_len;
lzo_moff_t m_off;
lzo_uint lit;
{
lzo_uint dindex = DINDEX(dv,ip);
GINDEX(m_pos,m_off,dict,dindex,in);
UPDATE_I(dict,cycle,dindex,ip,in);
}
if (LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,M4_MAX_OFFSET))
{
}
#if defined(LZO_UNALIGNED_OK_2)
else if (* (const lzo_ushortp) m_pos != * (const lzo_ushortp) ip)
#else
else if (m_pos[0] != ip[0] || m_pos[1] != ip[1])
#endif
{
}
else
{
if (m_pos[2] == ip[2])
{
lit = ip - ii;
m_pos += 3;
if (m_off <= M2_MAX_OFFSET)
goto match;
#if 0
if (lit <= 3)
goto match;
#else
if (lit == 3)
{
assert(op - 2 > out); op[-2] |= LZO_BYTE(3);
*op++ = *ii++; *op++ = *ii++; *op++ = *ii++;
goto code_match;
}
#endif
if (*m_pos == ip[3])
goto match;
}
else
{
#if 0
#if 0
if (m_off <= M1_MAX_OFFSET && lit > 0 && lit <= 3)
#else
if (m_off <= M1_MAX_OFFSET && lit == 3)
#endif
{
register lzo_uint t;
t = lit;
assert(op - 2 > out); op[-2] |= LZO_BYTE(t);
do *op++ = *ii++; while (--t > 0);
assert(ii == ip);
m_off -= 1;
*op++ = LZO_BYTE(M1_MARKER | ((m_off & 3) << 2));
*op++ = LZO_BYTE(m_off >> 2);
ip += 2;
goto match_done;
}
#endif
}
}
++ip;
if (ip >= ip_end)
break;
DVAL_NEXT(dv,ip);
continue;
match:
if (lit > 0)
{
register lzo_uint t = lit;
if (t <= 3)
{
assert(op - 2 > out);
op[-2] |= LZO_BYTE(t);
}
else if (t <= 18)
*op++ = LZO_BYTE(t - 3);
else
{
register lzo_uint tt = t - 18;
*op++ = 0;
while (tt > 255)
{
tt -= 255;
*op++ = 0;
}
assert(tt > 0);
*op++ = LZO_BYTE(tt);
}
do *op++ = *ii++; while (--t > 0);
}
code_match:
assert(ii == ip);
ip += 3;
if (*m_pos++ != *ip++ || *m_pos++ != *ip++ || *m_pos++ != *ip++ ||
*m_pos++ != *ip++ || *m_pos++ != *ip++ || *m_pos++ != *ip++
#ifdef LZO1Y
|| *m_pos++ != *ip++ || *m_pos++ != *ip++ || *m_pos++ != *ip++
|| *m_pos++ != *ip++ || *m_pos++ != *ip++ || *m_pos++ != *ip++
#endif
)
{
--ip;
m_len = ip - ii;
assert(m_len >= 3); assert(m_len <= M2_MAX_LEN);
if (m_off <= M2_MAX_OFFSET)
{
m_off -= 1;
#if defined(LZO1X)
*op++ = LZO_BYTE(((m_len - 1) << 5) | ((m_off & 7) << 2));
*op++ = LZO_BYTE(m_off >> 3);
#elif defined(LZO1Y)
*op++ = LZO_BYTE(((m_len + 1) << 4) | ((m_off & 3) << 2));
*op++ = LZO_BYTE(m_off >> 2);
#endif
}
else if (m_off <= M3_MAX_OFFSET)
{
m_off -= 1;
*op++ = LZO_BYTE(M3_MARKER | (m_len - 2));
goto m3_m4_offset;
}
else
#if defined(LZO1X)
{
m_off -= 0x4000;
assert(m_off > 0); assert(m_off <= 0x7fff);
*op++ = LZO_BYTE(M4_MARKER |
((m_off & 0x4000) >> 11) | (m_len - 2));
goto m3_m4_offset;
}
#elif defined(LZO1Y)
goto m4_match;
#endif
}
else
{
{
const lzo_byte *end;
end = in_end;
while (ip < end && *m_pos == *ip)
m_pos++, ip++;
m_len = (ip - ii);
}
assert(m_len > M2_MAX_LEN);
if (m_off <= M3_MAX_OFFSET)
{
m_off -= 1;
if (m_len <= 33)
*op++ = LZO_BYTE(M3_MARKER | (m_len - 2));
else
{
m_len -= 33;
*op++ = M3_MARKER | 0;
goto m3_m4_len;
}
}
else
{
#if defined(LZO1Y)
m4_match:
#endif
m_off -= 0x4000;
assert(m_off > 0); assert(m_off <= 0x7fff);
if (m_len <= M4_MAX_LEN)
*op++ = LZO_BYTE(M4_MARKER |
((m_off & 0x4000) >> 11) | (m_len - 2));
else
{
m_len -= M4_MAX_LEN;
*op++ = LZO_BYTE(M4_MARKER | ((m_off & 0x4000) >> 11));
m3_m4_len:
while (m_len > 255)
{
m_len -= 255;
*op++ = 0;
}
assert(m_len > 0);
*op++ = LZO_BYTE(m_len);
}
}
m3_m4_offset:
*op++ = LZO_BYTE((m_off & 63) << 2);
*op++ = LZO_BYTE(m_off >> 6);
}
#if 0
match_done:
#endif
ii = ip;
if (ip >= ip_end)
break;
DVAL_FIRST(dv,ip);
}
if (in_end - ii > 0)
{
register lzo_uint t = in_end - ii;
if (op == out && t <= 238)
*op++ = LZO_BYTE(17 + t);
else if (t <= 3)
op[-2] |= LZO_BYTE(t);
else if (t <= 18)
*op++ = LZO_BYTE(t - 3);
else
{
register lzo_uint tt = t - 18;
*op++ = 0;
while (tt > 255)
{
tt -= 255;
*op++ = 0;
}
assert(tt > 0);
*op++ = LZO_BYTE(tt);
}
do *op++ = *ii++; while (--t > 0);
}
*out_len = op - out;
return LZO_E_OK;
}
LZO_PUBLIC(int)
DO_COMPRESS ( const lzo_byte *in , lzo_uint in_len,
lzo_byte *out, lzo_uint *out_len,
lzo_voidp wrkmem )
{
lzo_byte *op = out;
int r = LZO_E_OK;
if (in_len <= 0)
*out_len = 0;
else if (in_len <= M2_MAX_LEN + 5)
{
*op++ = LZO_BYTE(17 + in_len);
do *op++ = *in++; while (--in_len > 0);
*out_len = op - out;
}
else
r = do_compress(in,in_len,out,out_len,wrkmem);
if (r == LZO_E_OK)
{
op = out + *out_len;
*op++ = M4_MARKER | 1;
*op++ = 0;
*op++ = 0;
*out_len += 3;
}
return r;
}
#undef LZO_TEST_DECOMPRESS_OVERRUN
#undef LZO_TEST_DECOMPRESS_OVERRUN_INPUT
#undef LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT
#undef LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND
#undef DO_DECOMPRESS
#define DO_DECOMPRESS lzo1x_decompress
#if defined(LZO_TEST_DECOMPRESS_OVERRUN)
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
# define LZO_TEST_DECOMPRESS_OVERRUN_INPUT 2
# endif
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
# define LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT 2
# endif
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
# define LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND
# endif
#endif
#undef TEST_IP
#undef TEST_OP
#undef TEST_LOOKBEHIND
#undef NEED_IP
#undef NEED_OP
#undef HAVE_TEST_IP
#undef HAVE_TEST_OP
#undef HAVE_NEED_IP
#undef HAVE_NEED_OP
#undef HAVE_ANY_IP
#undef HAVE_ANY_OP
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 1)
# define TEST_IP (ip < ip_end)
# endif
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 2)
# define NEED_IP(x) \
if (ip_end - ip < (lzo_ptrdiff_t)(x)) goto input_overrun
# endif
#endif
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 1)
# define TEST_OP (op <= op_end)
# endif
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 2)
# undef TEST_OP
# define NEED_OP(x) \
if (op_end - op < (lzo_ptrdiff_t)(x)) goto output_overrun
# endif
#endif
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
# define TEST_LOOKBEHIND(m_pos,out) if (m_pos < out) goto lookbehind_overrun
#else
# define TEST_LOOKBEHIND(m_pos,op) ((void) 0)
#endif
#if !defined(LZO_EOF_CODE) && !defined(TEST_IP)
# define TEST_IP (ip < ip_end)
#endif
#if defined(TEST_IP)
# define HAVE_TEST_IP
#else
# define TEST_IP 1
#endif
#if defined(TEST_OP)
# define HAVE_TEST_OP
#else
# define TEST_OP 1
#endif
#if defined(NEED_IP)
# define HAVE_NEED_IP
#else
# define NEED_IP(x) ((void) 0)
#endif
#if defined(NEED_OP)
# define HAVE_NEED_OP
#else
# define NEED_OP(x) ((void) 0)
#endif
#if defined(HAVE_TEST_IP) || defined(HAVE_NEED_IP)
# define HAVE_ANY_IP
#endif
#if defined(HAVE_TEST_OP) || defined(HAVE_NEED_OP)
# define HAVE_ANY_OP
#endif
#if defined(HAVE_ANY_IP) && defined(HAVE_ANY_OP)
# undef LZO_OPTIMIZE_GNUC_i386
#endif
LZO_PUBLIC(int)
DO_DECOMPRESS ( const lzo_byte *in , lzo_uint in_len,
lzo_byte *out, lzo_uint *out_len,
lzo_voidp wrkmem )
{
#if 0 && defined(__GNUC__) && defined(__i386__)
register lzo_byte *op __asm__("%edi");
register const lzo_byte *ip __asm__("%esi");
register lzo_uint t __asm__("%ecx");
register const lzo_byte *m_pos __asm__("%ebx");
#else
register lzo_byte *op;
register const lzo_byte *ip;
register lzo_uint t;
register const lzo_byte *m_pos;
#endif
const lzo_byte * const ip_end = in + in_len;
#if defined(HAVE_ANY_OP)
lzo_byte * const op_end = out + *out_len;
#endif
LZO_UNUSED(wrkmem);
*out_len = 0;
op = out;
ip = in;
if (*ip > 17)
{
t = *ip++ - 17;
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
do *op++ = *ip++; while (--t > 0);
goto first_literal_run;
}
while (TEST_IP && TEST_OP)
{
t = *ip++;
if (t >= 16)
goto match;
if (t == 0)
{
NEED_IP(1);
while (*ip == 0)
{
t += 255;
ip++;
NEED_IP(1);
}
t += 15 + *ip++;
}
assert(t > 0); NEED_OP(t+3); NEED_IP(t+4);
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
#if !defined(LZO_UNALIGNED_OK_4)
if (PTR_ALIGNED2_4(op,ip))
{
#endif
* (lzo_uint32p) op = * (const lzo_uint32p) ip;
op += 4; ip += 4;
if (--t > 0)
{
if (t >= 4)
{
do {
* (lzo_uint32p) op = * (const lzo_uint32p) ip;
op += 4; ip += 4; t -= 4;
} while (t >= 4);
if (t > 0) do *op++ = *ip++; while (--t > 0);
}
else
do *op++ = *ip++; while (--t > 0);
}
#if !defined(LZO_UNALIGNED_OK_4)
}
else
#endif
#endif
#if !defined(LZO_UNALIGNED_OK_4)
{
*op++ = *ip++; *op++ = *ip++; *op++ = *ip++;
do *op++ = *ip++; while (--t > 0);
}
#endif
first_literal_run:
t = *ip++;
#if defined(LZO1X_0) || defined(LZO1Y_0)
assert(t >= 16);
goto match;
#else
if (t >= 16)
goto match;
m_pos = op - 1 - M2_MAX_OFFSET;
m_pos -= t >> 2;
m_pos -= *ip++ << 2;
TEST_LOOKBEHIND(m_pos,out); NEED_OP(3);
*op++ = *m_pos++; *op++ = *m_pos++; *op++ = *m_pos;
goto match_done;
#endif
while (TEST_IP && TEST_OP)
{
match:
if (t >= 64)
{
m_pos = op - 1;
#if defined(LZO1X)
m_pos -= (t >> 2) & 7;
m_pos -= *ip++ << 3;
t = (t >> 5) - 1;
#elif defined(LZO1Y)
m_pos -= (t >> 2) & 3;
m_pos -= *ip++ << 2;
t = (t >> 4) - 3;
#endif
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
goto copy_match;
}
else if (t >= 32)
{
t &= 31;
if (t == 0)
{
NEED_IP(1);
while (*ip == 0)
{
t += 255;
ip++;
NEED_IP(1);
}
t += 31 + *ip++;
}
m_pos = op - 1;
#if defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
m_pos -= (* (const lzo_ushortp) ip) >> 2;
ip += 2;
#else
m_pos -= *ip++ >> 2;
m_pos -= *ip++ << 6;
#endif
}
#if defined(LZO1X_0) || defined(LZO1Y_0)
else
{
assert(t >= 16);
#else
else if (t >= 16)
{
#endif
m_pos = op;
m_pos -= (t & 8) << 11;
t &= 7;
if (t == 0)
{
NEED_IP(1);
while (*ip == 0)
{
t += 255;
ip++;
NEED_IP(1);
}
t += 7 + *ip++;
}
#if defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
m_pos -= (* (const lzo_ushortp) ip) >> 2;
ip += 2;
#else
m_pos -= *ip++ >> 2;
m_pos -= *ip++ << 6;
#endif
if (m_pos == op)
goto eof_found;
m_pos -= 0x4000;
}
#if !defined(LZO1X_0) && !defined(LZO1Y_0)
else
{
m_pos = op - 1;
m_pos -= t >> 2;
m_pos -= *ip++ << 2;
TEST_LOOKBEHIND(m_pos,out); NEED_OP(2);
*op++ = *m_pos++; *op++ = *m_pos;
goto match_done;
}
#endif
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
#if !defined(LZO_UNALIGNED_OK_4)
if (t >= 2 * 4 - (3 - 1) && PTR_ALIGNED2_4(op,m_pos))
{
assert((op - m_pos) >= 4);
#else
if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4)
{
#endif
* (lzo_uint32p) op = * (const lzo_uint32p) m_pos;
op += 4; m_pos += 4; t -= 4 - (3 - 1);
do {
* (lzo_uint32p) op = * (const lzo_uint32p) m_pos;
op += 4; m_pos += 4; t -= 4;
} while (t >= 4);
if (t > 0) do *op++ = *m_pos++; while (--t > 0);
}
else
#endif
{
copy_match:
*op++ = *m_pos++; *op++ = *m_pos++;
do *op++ = *m_pos++; while (--t > 0);
}
match_done:
t = ip[-2] & 3;
if (t == 0)
break;
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
do *op++ = *ip++; while (--t > 0);
t = *ip++;
}
}
#if defined(HAVE_TEST_IP) || defined(HAVE_TEST_OP)
*out_len = op - out;
return LZO_E_EOF_NOT_FOUND;
#endif
eof_found:
assert(t == 1);
*out_len = op - out;
return (ip == ip_end ? LZO_E_OK :
(ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
#if defined(HAVE_NEED_IP)
input_overrun:
*out_len = op - out;
return LZO_E_INPUT_OVERRUN;
#endif
#if defined(HAVE_NEED_OP)
output_overrun:
*out_len = op - out;
return LZO_E_OUTPUT_OVERRUN;
#endif
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
lookbehind_overrun:
*out_len = op - out;
return LZO_E_LOOKBEHIND_OVERRUN;
#endif
}
#define LZO_TEST_DECOMPRESS_OVERRUN
#undef DO_DECOMPRESS
#define DO_DECOMPRESS lzo1x_decompress_safe
#if defined(LZO_TEST_DECOMPRESS_OVERRUN)
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
# define LZO_TEST_DECOMPRESS_OVERRUN_INPUT 2
# endif
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
# define LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT 2
# endif
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
# define LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND
# endif
#endif
#undef TEST_IP
#undef TEST_OP
#undef TEST_LOOKBEHIND
#undef NEED_IP
#undef NEED_OP
#undef HAVE_TEST_IP
#undef HAVE_TEST_OP
#undef HAVE_NEED_IP
#undef HAVE_NEED_OP
#undef HAVE_ANY_IP
#undef HAVE_ANY_OP
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 1)
# define TEST_IP (ip < ip_end)
# endif
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 2)
# define NEED_IP(x) \
if (ip_end - ip < (lzo_ptrdiff_t)(x)) goto input_overrun
# endif
#endif
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 1)
# define TEST_OP (op <= op_end)
# endif
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 2)
# undef TEST_OP
# define NEED_OP(x) \
if (op_end - op < (lzo_ptrdiff_t)(x)) goto output_overrun
# endif
#endif
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
# define TEST_LOOKBEHIND(m_pos,out) if (m_pos < out) goto lookbehind_overrun
#else
# define TEST_LOOKBEHIND(m_pos,op) ((void) 0)
#endif
#if !defined(LZO_EOF_CODE) && !defined(TEST_IP)
# define TEST_IP (ip < ip_end)
#endif
#if defined(TEST_IP)
# define HAVE_TEST_IP
#else
# define TEST_IP 1
#endif
#if defined(TEST_OP)
# define HAVE_TEST_OP
#else
# define TEST_OP 1
#endif
#if defined(NEED_IP)
# define HAVE_NEED_IP
#else
# define NEED_IP(x) ((void) 0)
#endif
#if defined(NEED_OP)
# define HAVE_NEED_OP
#else
# define NEED_OP(x) ((void) 0)
#endif
#if defined(HAVE_TEST_IP) || defined(HAVE_NEED_IP)
# define HAVE_ANY_IP
#endif
#if defined(HAVE_TEST_OP) || defined(HAVE_NEED_OP)
# define HAVE_ANY_OP
#endif
#if defined(HAVE_ANY_IP) && defined(HAVE_ANY_OP)
# undef LZO_OPTIMIZE_GNUC_i386
#endif
LZO_PUBLIC(int)
DO_DECOMPRESS ( const lzo_byte *in , lzo_uint in_len,
lzo_byte *out, lzo_uint *out_len,
lzo_voidp wrkmem )
{
#if 0 && defined(__GNUC__) && defined(__i386__)
register lzo_byte *op __asm__("%edi");
register const lzo_byte *ip __asm__("%esi");
register lzo_uint t __asm__("%ecx");
register const lzo_byte *m_pos __asm__("%ebx");
#else
register lzo_byte *op;
register const lzo_byte *ip;
register lzo_uint t;
register const lzo_byte *m_pos;
#endif
const lzo_byte * const ip_end = in + in_len;
#if defined(HAVE_ANY_OP)
lzo_byte * const op_end = out + *out_len;
#endif
LZO_UNUSED(wrkmem);
*out_len = 0;
op = out;
ip = in;
if (*ip > 17)
{
t = *ip++ - 17;
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
do *op++ = *ip++; while (--t > 0);
goto first_literal_run;
}
while (TEST_IP && TEST_OP)
{
t = *ip++;
if (t >= 16)
goto match;
if (t == 0)
{
NEED_IP(1);
while (*ip == 0)
{
t += 255;
ip++;
NEED_IP(1);
}
t += 15 + *ip++;
}
assert(t > 0); NEED_OP(t+3); NEED_IP(t+4);
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
#if !defined(LZO_UNALIGNED_OK_4)
if (PTR_ALIGNED2_4(op,ip))
{
#endif
* (lzo_uint32p) op = * (const lzo_uint32p) ip;
op += 4; ip += 4;
if (--t > 0)
{
if (t >= 4)
{
do {
* (lzo_uint32p) op = * (const lzo_uint32p) ip;
op += 4; ip += 4; t -= 4;
} while (t >= 4);
if (t > 0) do *op++ = *ip++; while (--t > 0);
}
else
do *op++ = *ip++; while (--t > 0);
}
#if !defined(LZO_UNALIGNED_OK_4)
}
else
#endif
#endif
#if !defined(LZO_UNALIGNED_OK_4)
{
*op++ = *ip++; *op++ = *ip++; *op++ = *ip++;
do *op++ = *ip++; while (--t > 0);
}
#endif
first_literal_run:
t = *ip++;
#if defined(LZO1X_0) || defined(LZO1Y_0)
assert(t >= 16);
goto match;
#else
if (t >= 16)
goto match;
m_pos = op - 1 - M2_MAX_OFFSET;
m_pos -= t >> 2;
m_pos -= *ip++ << 2;
TEST_LOOKBEHIND(m_pos,out); NEED_OP(3);
*op++ = *m_pos++; *op++ = *m_pos++; *op++ = *m_pos;
goto match_done;
#endif
while (TEST_IP && TEST_OP)
{
match:
if (t >= 64)
{
m_pos = op - 1;
#if defined(LZO1X)
m_pos -= (t >> 2) & 7;
m_pos -= *ip++ << 3;
t = (t >> 5) - 1;
#elif defined(LZO1Y)
m_pos -= (t >> 2) & 3;
m_pos -= *ip++ << 2;
t = (t >> 4) - 3;
#endif
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
goto copy_match;
}
else if (t >= 32)
{
t &= 31;
if (t == 0)
{
NEED_IP(1);
while (*ip == 0)
{
t += 255;
ip++;
NEED_IP(1);
}
t += 31 + *ip++;
}
m_pos = op - 1;
#if defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
m_pos -= (* (const lzo_ushortp) ip) >> 2;
ip += 2;
#else
m_pos -= *ip++ >> 2;
m_pos -= *ip++ << 6;
#endif
}
#if defined(LZO1X_0) || defined(LZO1Y_0)
else
{
assert(t >= 16);
#else
else if (t >= 16)
{
#endif
m_pos = op;
m_pos -= (t & 8) << 11;
t &= 7;
if (t == 0)
{
NEED_IP(1);
while (*ip == 0)
{
t += 255;
ip++;
NEED_IP(1);
}
t += 7 + *ip++;
}
#if defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
m_pos -= (* (const lzo_ushortp) ip) >> 2;
ip += 2;
#else
m_pos -= *ip++ >> 2;
m_pos -= *ip++ << 6;
#endif
if (m_pos == op)
goto eof_found;
m_pos -= 0x4000;
}
#if !defined(LZO1X_0) && !defined(LZO1Y_0)
else
{
m_pos = op - 1;
m_pos -= t >> 2;
m_pos -= *ip++ << 2;
TEST_LOOKBEHIND(m_pos,out); NEED_OP(2);
*op++ = *m_pos++; *op++ = *m_pos;
goto match_done;
}
#endif
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
#if !defined(LZO_UNALIGNED_OK_4)
if (t >= 2 * 4 - (3 - 1) && PTR_ALIGNED2_4(op,m_pos))
{
assert((op - m_pos) >= 4);
#else
if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4)
{
#endif
* (lzo_uint32p) op = * (const lzo_uint32p) m_pos;
op += 4; m_pos += 4; t -= 4 - (3 - 1);
do {
* (lzo_uint32p) op = * (const lzo_uint32p) m_pos;
op += 4; m_pos += 4; t -= 4;
} while (t >= 4);
if (t > 0) do *op++ = *m_pos++; while (--t > 0);
}
else
#endif
{
copy_match:
*op++ = *m_pos++; *op++ = *m_pos++;
do *op++ = *m_pos++; while (--t > 0);
}
match_done:
t = ip[-2] & 3;
if (t == 0)
break;
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
do *op++ = *ip++; while (--t > 0);
t = *ip++;
}
}
#if defined(HAVE_TEST_IP) || defined(HAVE_TEST_OP)
*out_len = op - out;
return LZO_E_EOF_NOT_FOUND;
#endif
eof_found:
assert(t == 1);
*out_len = op - out;
return (ip == ip_end ? LZO_E_OK :
(ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
#if defined(HAVE_NEED_IP)
input_overrun:
*out_len = op - out;
return LZO_E_INPUT_OVERRUN;
#endif
#if defined(HAVE_NEED_OP)
output_overrun:
*out_len = op - out;
return LZO_E_OUTPUT_OVERRUN;
#endif
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
lookbehind_overrun:
*out_len = op - out;
return LZO_E_LOOKBEHIND_OVERRUN;
#endif
}
/***** End of minilzo.c *****/