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minilzo.c
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minilzo.c
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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 "mylzo.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);