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Diffstat (limited to 'src/lzo_conf.h')
| -rw-r--r-- | src/lzo_conf.h | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/src/lzo_conf.h b/src/lzo_conf.h new file mode 100644 index 0000000..5fcf963 --- /dev/null +++ b/src/lzo_conf.h @@ -0,0 +1,392 @@ +/* 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) 2011 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1996 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., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + + Markus F.X.J. Oberhumer + <markus@oberhumer.com> + http://www.oberhumer.com/opensource/lzo/ + */ + + +/* 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 1 + +#if !defined(__LZO_IN_MINILZO) +#if (LZO_CFG_FREESTANDING) +# define LZO_LIBC_FREESTANDING 1 +# define LZO_OS_FREESTANDING 1 +# define ACC_LIBC_FREESTANDING 1 +# define ACC_OS_FREESTANDING 1 +#endif +#if (LZO_CFG_NO_UNALIGNED) +# define ACC_CFG_NO_UNALIGNED 1 +#endif +#if (LZO_ARCH_GENERIC) +# define ACC_ARCH_GENERIC 1 +#endif +#if (LZO_ABI_NEUTRAL_ENDIAN) +# define ACC_ABI_NEUTRAL_ENDIAN 1 +#endif +#if (LZO_HAVE_CONFIG_H) +# define ACC_CONFIG_NO_HEADER 1 +#endif +#if defined(LZO_CFG_EXTRA_CONFIG_HEADER) +# include LZO_CFG_EXTRA_CONFIG_HEADER +#endif +#if defined(__LZOCONF_H) || defined(__LZOCONF_H_INCLUDED) +# error "include this file first" +#endif +#include "lzo/lzoconf.h" +#endif + +#if (LZO_VERSION < 0x02000) || !defined(__LZOCONF_H_INCLUDED) +# error "version mismatch" +#endif + + +/*********************************************************************** +// pragmas +************************************************************************/ + +#if (LZO_CC_BORLANDC && LZO_ARCH_I086) +# pragma option -h /* enable fast huge pointers */ +#endif + +#if (LZO_CC_MSC && (_MSC_VER >= 1000)) +# pragma warning(disable: 4127 4701) +#endif +#if (LZO_CC_MSC && (_MSC_VER >= 1300)) + /* avoid '-Wall' warnings in system header files */ +# pragma warning(disable: 4820) + /* avoid warnings about inlining */ +# pragma warning(disable: 4514 4710 4711) +#endif + +#if (LZO_CC_SUNPROC) +#if !defined(__cplusplus) +# pragma error_messages(off,E_END_OF_LOOP_CODE_NOT_REACHED) +# pragma error_messages(off,E_LOOP_NOT_ENTERED_AT_TOP) +# pragma error_messages(off,E_STATEMENT_NOT_REACHED) +#endif +#endif + + +/*********************************************************************** +// +************************************************************************/ + +#if (__LZO_MMODEL_HUGE) && !(LZO_HAVE_MM_HUGE_PTR) +# error "this should not happen - check defines for __huge" +#endif + +#if defined(__LZO_IN_MINILZO) || defined(LZO_CFG_FREESTANDING) +#elif (LZO_OS_DOS16 || LZO_OS_OS216 || LZO_OS_WIN16) +# define ACC_WANT_ACC_INCD_H 1 +# define ACC_WANT_ACC_INCE_H 1 +# define ACC_WANT_ACC_INCI_H 1 +#elif 1 +# include <string.h> +#else +# define ACC_WANT_ACC_INCD_H 1 +#endif +#include "miniacc.h" + + +#if (LZO_CFG_FREESTANDING) +# undef HAVE_MEMCMP +# undef HAVE_MEMCPY +# undef HAVE_MEMMOVE +# undef HAVE_MEMSET +#endif + +#if !(HAVE_MEMCMP) +# undef memcmp +# define memcmp(a,b,c) lzo_memcmp(a,b,c) +#elif !(__LZO_MMODEL_HUGE) +# undef lzo_memcmp +# define lzo_memcmp(a,b,c) memcmp(a,b,c) +#endif +#if !(HAVE_MEMCPY) +# undef memcpy +# define memcpy(a,b,c) lzo_memcpy(a,b,c) +#elif !(__LZO_MMODEL_HUGE) +# undef lzo_memcpy +# define lzo_memcpy(a,b,c) memcpy(a,b,c) +#endif +#if !(HAVE_MEMMOVE) +# undef memmove +# define memmove(a,b,c) lzo_memmove(a,b,c) +#elif !(__LZO_MMODEL_HUGE) +# undef lzo_memmove +# define lzo_memmove(a,b,c) memmove(a,b,c) +#endif +#if !(HAVE_MEMSET) +# undef memset +# define memset(a,b,c) lzo_memset(a,b,c) +#elif !(__LZO_MMODEL_HUGE) +# undef lzo_memset +# define lzo_memset(a,b,c) memset(a,b,c) +#endif + + +#undef NDEBUG +#if (LZO_CFG_FREESTANDING) +# undef LZO_DEBUG +# define NDEBUG 1 +# undef assert +# define assert(e) ((void)0) +#else +# if !defined(LZO_DEBUG) +# define NDEBUG 1 +# endif +# include <assert.h> +#endif + +#if 0 && 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_inline) +# define __lzo_inline /*empty*/ +#endif +#if !defined(__lzo_forceinline) +# define __lzo_forceinline /*empty*/ +#endif +#if !defined(__lzo_noinline) +# define __lzo_noinline /*empty*/ +#endif + +#if (LZO_CFG_PGO) +# undef __acc_likely +# undef __acc_unlikely +# undef __lzo_likely +# undef __lzo_unlikely +# define __acc_likely(e) (e) +# define __acc_unlikely(e) (e) +# define __lzo_likely(e) (e) +# define __lzo_unlikely(e) (e) +#endif + + +/*********************************************************************** +// +************************************************************************/ + +#if 1 +# 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) + +#if !defined(DMUL) +#if 0 + /* 32*32 multiplies may be faster than 64*64 on some 64-bit machines, + * but then we need extra casts from unsigned<->size_t */ +# define DMUL(a,b) ((lzo_xint) ((lzo_uint32)(a) * (lzo_uint32)(b))) +#else +# define DMUL(a,b) ((lzo_xint) ((a) * (b))) +#endif +#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 && (LZO_ARCH_AMD64 || LZO_ARCH_I386 || LZO_ARCH_POWERPC) +# if (LZO_SIZEOF_SHORT == 2) +# define LZO_UNALIGNED_OK_2 1 +# endif +# if (LZO_SIZEOF_INT == 4) +# define LZO_UNALIGNED_OK_4 1 +# endif +#endif +#if 1 && (LZO_ARCH_AMD64) +# if defined(LZO_UINT64_MAX) +# define LZO_UNALIGNED_OK_8 1 +# endif +#endif +#if (LZO_CFG_NO_UNALIGNED) +# undef LZO_UNALIGNED_OK_2 +# undef LZO_UNALIGNED_OK_4 +# undef LZO_UNALIGNED_OK_8 +#endif + +#undef UA_GET16 +#undef UA_SET16 +#undef UA_COPY16 +#undef UA_GET32 +#undef UA_SET32 +#undef UA_COPY32 +#undef UA_GET64 +#undef UA_SET64 +#undef UA_COPY64 +#if defined(LZO_UNALIGNED_OK_2) + LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(unsigned short) == 2) +# if 1 && defined(ACC_UA_COPY16) +# define UA_GET16 ACC_UA_GET16 +# define UA_SET16 ACC_UA_SET16 +# define UA_COPY16 ACC_UA_COPY16 +# else +# define UA_GET16(p) (* (__lzo_ua_volatile const lzo_ushortp) (__lzo_ua_volatile const lzo_voidp) (p)) +# define UA_SET16(p,v) ((* (__lzo_ua_volatile lzo_ushortp) (__lzo_ua_volatile lzo_voidp) (p)) = (unsigned short) (v)) +# define UA_COPY16(d,s) UA_SET16(d, UA_GET16(s)) +# endif +#endif +#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4) + LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_uint32) == 4) +# if 1 && defined(ACC_UA_COPY32) +# define UA_GET32 ACC_UA_GET32 +# define UA_SET32 ACC_UA_SET32 +# define UA_COPY32 ACC_UA_COPY32 +# else +# define UA_GET32(p) (* (__lzo_ua_volatile const lzo_uint32p) (__lzo_ua_volatile const lzo_voidp) (p)) +# define UA_SET32(p,v) ((* (__lzo_ua_volatile lzo_uint32p) (__lzo_ua_volatile lzo_voidp) (p)) = (lzo_uint32) (v)) +# define UA_COPY32(d,s) UA_SET32(d, UA_GET32(s)) +# endif +#endif +#if defined(LZO_UNALIGNED_OK_8) + LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_uint64) == 8) +# if 1 && defined(ACC_UA_COPY64) +# define UA_GET64 ACC_UA_GET64 +# define UA_SET64 ACC_UA_SET64 +# define UA_COPY64 ACC_UA_COPY64 +# else +# define UA_GET64(p) (* (__lzo_ua_volatile const lzo_uint64p) (__lzo_ua_volatile const lzo_voidp) (p)) +# define UA_SET64(p,v) ((* (__lzo_ua_volatile lzo_uint64p) (__lzo_ua_volatile lzo_voidp) (p)) = (lzo_uint64) (v)) +# define UA_COPY64(d,s) UA_SET64(d, UA_GET64(s)) +# endif +#endif + + +/* Fast memcpy that copies multiples of 8 byte chunks. + * len is the number of bytes. + * note: all parameters must be lvalues, len >= 8 + * dest and src advance, len is undefined afterwards + */ + +#define MEMCPY8_DS(dest,src,len) \ + lzo_memcpy(dest,src,len); dest += len; src += len + +#define BZERO8_PTR(s,l,n) \ + lzo_memset((lzo_voidp)(s),0,(lzo_uint)(l)*(n)) + +#define MEMCPY_DS(dest,src,len) \ + do *dest++ = *src++; while (--len > 0) + + +/*********************************************************************** +// some globals +************************************************************************/ + +LZO_EXTERN(const lzo_bytep) lzo_copyright(void); + + +/*********************************************************************** +// +************************************************************************/ + +#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. + */ +#ifndef LZO_DETERMINISTIC +#define LZO_DETERMINISTIC 1 +#endif + + +#ifndef LZO_DICT_USE_PTR +#define LZO_DICT_USE_PTR 1 +#if 0 && (LZO_ARCH_I086) +# undef LZO_DICT_USE_PTR +# define LZO_DICT_USE_PTR 0 +#endif +#endif + +#if (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 + + +#endif /* already included */ + +/* +vi:ts=4:et +*/ + |