/* lzo_conf.h -- main internal configuration file for the the LZO library This file is part of the LZO real-time data compression library. Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer All Rights Reserved. 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 */ /* WARNING: this file should *not* be used by applications. It is part of the implementation of the library and is subject to change. */ #ifndef __LZO_CONF_H #define __LZO_CONF_H #if !defined(__LZO_IN_MINILZO) # ifndef __LZOCONF_H # include # endif #endif /*********************************************************************** // memory checkers ************************************************************************/ #if defined(__BOUNDS_CHECKING_ON) # include #else # define BOUNDS_CHECKING_OFF_DURING(stmt) stmt # define BOUNDS_CHECKING_OFF_IN_EXPR(expr) (expr) #endif /*********************************************************************** // autoconf section ************************************************************************/ #if !defined(LZO_HAVE_CONFIG_H) # include /* ptrdiff_t, size_t */ # include /* memcpy, memmove, memcmp, memset */ # if !defined(NO_STDLIB_H) # include # endif # define HAVE_MEMCMP # define HAVE_MEMCPY # define HAVE_MEMMOVE # define HAVE_MEMSET #else # include # if defined(HAVE_STDDEF_H) # include # endif # if defined(STDC_HEADERS) # include # include # endif #endif #if defined(__LZO_DOS16) || defined(__LZO_WIN16) # define HAVE_MALLOC_H # define HAVE_HALLOC #endif #undef NDEBUG #if !defined(LZO_DEBUG) # define NDEBUG #endif #if defined(LZO_DEBUG) || !defined(NDEBUG) # if !defined(NO_STDIO_H) # include # endif #endif #include #if !defined(LZO_COMPILE_TIME_ASSERT) # define LZO_COMPILE_TIME_ASSERT(expr) \ { typedef int __lzo_compile_time_assert_fail[1 - 2 * !(expr)]; } #endif #if !defined(LZO_UNUSED) # if 1 # define LZO_UNUSED(var) ((void)&var) # elif 0 # define LZO_UNUSED(var) { typedef int __lzo_unused[sizeof(var) ? 2 : 1]; } # else # define LZO_UNUSED(parm) (parm = parm) # endif #endif #if !defined(__inline__) && !defined(__GNUC__) # if defined(__cplusplus) # define __inline__ inline # else # define __inline__ /* nothing */ # endif #endif #if defined(NO_MEMCMP) # undef HAVE_MEMCMP #endif #if !defined(HAVE_MEMCMP) # undef memcmp # define memcmp lzo_memcmp #endif #if !defined(HAVE_MEMCPY) # undef memcpy # define memcpy lzo_memcpy #endif #if !defined(HAVE_MEMMOVE) # undef memmove # define memmove lzo_memmove #endif #if !defined(HAVE_MEMSET) # undef memset # define memset lzo_memset #endif /*********************************************************************** // ************************************************************************/ #if 0 # define LZO_BYTE(x) ((unsigned char) (x)) #else # define LZO_BYTE(x) ((unsigned char) ((x) & 0xff)) #endif #define LZO_MAX(a,b) ((a) >= (b) ? (a) : (b)) #define LZO_MIN(a,b) ((a) <= (b) ? (a) : (b)) #define LZO_MAX3(a,b,c) ((a) >= (b) ? LZO_MAX(a,c) : LZO_MAX(b,c)) #define LZO_MIN3(a,b,c) ((a) <= (b) ? LZO_MIN(a,c) : LZO_MIN(b,c)) #define lzo_sizeof(type) ((lzo_uint) (sizeof(type))) #define LZO_HIGH(array) ((lzo_uint) (sizeof(array)/sizeof(*(array)))) /* this always fits into 16 bits */ #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) /* Maximum value of a signed/unsigned type. Do not use casts, avoid overflows ! */ #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 == LZO_0xffffffffL) # define SIZEOF_UNSIGNED 4 # elif (UINT_MAX >= LZO_0xffffffffL) # define SIZEOF_UNSIGNED 8 # else # error "SIZEOF_UNSIGNED" # endif #endif #if !defined(SIZEOF_UNSIGNED_LONG) # if (ULONG_MAX == LZO_0xffffffffL) # define SIZEOF_UNSIGNED_LONG 4 # elif (ULONG_MAX >= LZO_0xffffffffL) # define SIZEOF_UNSIGNED_LONG 8 # else # error "SIZEOF_UNSIGNED_LONG" # 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 /*********************************************************************** // compiler and architecture specific stuff ************************************************************************/ /* Some defines that indicate if memory can be accessed at unaligned * memory addresses. You should also test that this is actually faster * even if it is allowed by your system. */ #if 1 && defined(__LZO_i386) && (UINT_MAX == LZO_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 == LZO_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_NO_UNALIGNED) # undef LZO_UNALIGNED_OK # undef LZO_UNALIGNED_OK_2 # undef LZO_UNALIGNED_OK_4 #endif #if defined(LZO_UNALIGNED_OK_2) && (USHRT_MAX != 0xffff) # error "LZO_UNALIGNED_OK_2 must not be defined on this system" #endif #if defined(LZO_UNALIGNED_OK_4) && (LZO_UINT32_MAX != LZO_0xffffffffL) # error "LZO_UNALIGNED_OK_4 must not be defined on this system" #endif /* Many modern processors can transfer 32bit words much faster than * bytes - this can significantly speed decompression. */ #if defined(__LZO_NO_ALIGNED) # undef LZO_ALIGNED_OK_4 #endif #if defined(LZO_ALIGNED_OK_4) && (LZO_UINT32_MAX != LZO_0xffffffffL) # error "LZO_ALIGNED_OK_4 must not be defined on this system" #endif /* Definitions for byte order, according to significance of bytes, from low * addresses to high addresses. The value is what you get by putting '4' * in the most significant byte, '3' in the second most significant byte, * '2' in the second least significant byte, and '1' in the least * significant byte. * The byte order is only needed if we use LZO_UNALIGNED_OK. */ #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 /*********************************************************************** // optimization ************************************************************************/ /* gcc 2.6.3 and gcc 2.7.2 have a bug with 'register xxx __asm__("%yyy")' */ #define LZO_OPTIMIZE_GNUC_i386_IS_BUGGY /* Help the gcc optimizer with register allocation. */ #if defined(NDEBUG) && !defined(LZO_DEBUG) && !defined(__LZO_CHECKER) # if defined(__GNUC__) && defined(__i386__) # if !defined(LZO_OPTIMIZE_GNUC_i386_IS_BUGGY) # define LZO_OPTIMIZE_GNUC_i386 # endif # endif #endif /*********************************************************************** // some globals ************************************************************************/ __LZO_EXTERN_C int __lzo_init_done; __LZO_EXTERN_C const lzo_byte __lzo_copyright[]; LZO_EXTERN(const lzo_byte *) lzo_copyright(void); __LZO_EXTERN_C const lzo_uint32 _lzo_crc32_table[256]; /*********************************************************************** // ANSI C preprocessor macros ************************************************************************/ #define _LZO_STRINGIZE(x) #x #define _LZO_MEXPAND(x) _LZO_STRINGIZE(x) /* concatenate */ #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 /* expand and concatenate (by using one level of indirection) */ #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) /*********************************************************************** // Query-interface to the algorithms ************************************************************************/ #if 0 #define __LZO_IS_COMPRESS_QUERY(i,il,o,ol,w) ((lzo_voidp)(o) == (w)) #define __LZO_QUERY_COMPRESS(i,il,o,ol,w,n,s) \ (*ol = (n)*(s), LZO_E_OK) #define __LZO_IS_DECOMPRESS_QUERY(i,il,o,ol,w) ((lzo_voidp)(o) == (w)) #define __LZO_QUERY_DECOMPRESS(i,il,o,ol,w,n,s) \ (*ol = (n)*(s), LZO_E_OK) #define __LZO_IS_OPTIMIZE_QUERY(i,il,o,ol,w) ((lzo_voidp)(o) == (w)) #define __LZO_QUERY_OPTIMIZE(i,il,o,ol,w,n,s) \ (*ol = (n)*(s), LZO_E_OK) #endif /*********************************************************************** // ************************************************************************/ #include "lzo_ptr.h" /* Generate compressed data in a deterministic way. * This is fully portable, and compression can be faster as well. * A reason NOT to be deterministic is when the block size is * very small (e.g. 8kB) or the dictionary is big, because * then the initialization of the dictionary becomes a relevant * magnitude for compression speed. */ #define LZO_DETERMINISTIC #define LZO_DICT_USE_PTR #if defined(__LZO_DOS16) || defined(__LZO_WIN16) || defined(__LZO_STRICT_16BIT) # undef LZO_DICT_USE_PTR #endif #if defined(LZO_DICT_USE_PTR) # define lzo_dict_t const lzo_bytep # define lzo_dict_p lzo_dict_t __LZO_MMODEL * #else # define lzo_dict_t lzo_uint # define lzo_dict_p lzo_dict_t __LZO_MMODEL * #endif #if !defined(lzo_moff_t) /* must be unsigned */ #define lzo_moff_t lzo_uint #endif #endif /* already included */ /* vi:ts=4:et */