forked from len0rd/rockbox
1246668a78
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9000 a1c6a512-1295-4272-9138-f99709370657
359 lines
10 KiB
C
359 lines
10 KiB
C
/* ucl_conf.h -- main internal configuration file for the the UCL library
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This file is part of the UCL data compression library.
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Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
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All Rights Reserved.
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The UCL library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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The UCL library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the UCL library; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Markus F.X.J. Oberhumer
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<markus@oberhumer.com>
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*/
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/* WARNING: this file should *not* be used by applications. It is
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part of the implementation of the library and is subject
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to change.
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*/
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#ifndef __UCL_CONF_H
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#define __UCL_CONF_H
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#if !defined(__UCL_IN_MINIUCL)
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# ifndef __UCLCONF_H
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# include <ucl/uclconf.h>
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# endif
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#endif
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/***********************************************************************
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// memory checkers
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************************************************************************/
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#if defined(__BOUNDS_CHECKING_ON)
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# include <unchecked.h>
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#else
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# define BOUNDS_CHECKING_OFF_DURING(stmt) stmt
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# define BOUNDS_CHECKING_OFF_IN_EXPR(expr) (expr)
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#endif
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/***********************************************************************
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// autoconf section
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************************************************************************/
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#if !defined(UCL_HAVE_CONFIG_H)
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# include <stddef.h> /* ptrdiff_t, size_t */
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# include <string.h> /* memcpy, memmove, memcmp, memset */
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# if !defined(NO_STDLIB_H)
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# include <stdlib.h>
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# endif
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# define HAVE_MEMCMP
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# define HAVE_MEMCPY
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# define HAVE_MEMMOVE
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# define HAVE_MEMSET
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#else
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# include <sys/types.h>
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# if defined(STDC_HEADERS)
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# include <string.h>
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# include <stdlib.h>
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# endif
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# if defined(HAVE_STDDEF_H)
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# include <stddef.h>
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# endif
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# if defined(HAVE_MEMORY_H)
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# include <memory.h>
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# endif
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#endif
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#if defined(__UCL_DOS16) || defined(__UCL_WIN16)
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# define HAVE_MALLOC_H
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# define HAVE_HALLOC
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#endif
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#undef NDEBUG
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#if !defined(UCL_DEBUG)
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# define NDEBUG
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#endif
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#if 1 || defined(UCL_DEBUG) || !defined(NDEBUG)
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# if !defined(NO_STDIO_H)
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# include <stdio.h>
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# endif
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#endif
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#include <assert.h>
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#if !defined(UCL_UNUSED)
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# define UCL_UNUSED(parm) (parm = parm)
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#endif
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#if !defined(__inline__) && !defined(__GNUC__)
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# if defined(__cplusplus)
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# define __inline__ inline
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# else
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# define __inline__ /* nothing */
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# endif
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#endif
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/***********************************************************************
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//
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************************************************************************/
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#if 1
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# define UCL_BYTE(x) ((unsigned char) (x))
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#else
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# define UCL_BYTE(x) ((unsigned char) ((x) & 0xff))
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#endif
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#if 0
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# define UCL_USHORT(x) ((unsigned short) (x))
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#else
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# define UCL_USHORT(x) ((unsigned short) ((x) & 0xffff))
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#endif
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#define UCL_MAX(a,b) ((a) >= (b) ? (a) : (b))
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#define UCL_MIN(a,b) ((a) <= (b) ? (a) : (b))
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#define UCL_MAX3(a,b,c) ((a) >= (b) ? UCL_MAX(a,c) : UCL_MAX(b,c))
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#define UCL_MIN3(a,b,c) ((a) <= (b) ? UCL_MIN(a,c) : UCL_MIN(b,c))
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#define ucl_sizeof(type) ((ucl_uint) (sizeof(type)))
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#define UCL_HIGH(array) ((ucl_uint) (sizeof(array)/sizeof(*(array))))
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/* this always fits into 16 bits */
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#define UCL_SIZE(bits) (1u << (bits))
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#define UCL_MASK(bits) (UCL_SIZE(bits) - 1)
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#define UCL_LSIZE(bits) (1ul << (bits))
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#define UCL_LMASK(bits) (UCL_LSIZE(bits) - 1)
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#define UCL_USIZE(bits) ((ucl_uint) 1 << (bits))
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#define UCL_UMASK(bits) (UCL_USIZE(bits) - 1)
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/* Maximum value of a signed/unsigned type.
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Do not use casts, avoid overflows ! */
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#define UCL_STYPE_MAX(b) (((1l << (8*(b)-2)) - 1l) + (1l << (8*(b)-2)))
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#define UCL_UTYPE_MAX(b) (((1ul << (8*(b)-1)) - 1ul) + (1ul << (8*(b)-1)))
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/***********************************************************************
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//
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************************************************************************/
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#if !defined(SIZEOF_UNSIGNED)
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# if (UINT_MAX == 0xffff)
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# define SIZEOF_UNSIGNED 2
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# elif (UINT_MAX == UCL_0xffffffffL)
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# define SIZEOF_UNSIGNED 4
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# elif (UINT_MAX >= UCL_0xffffffffL)
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# define SIZEOF_UNSIGNED 8
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# else
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# error "SIZEOF_UNSIGNED"
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# endif
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#endif
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#if !defined(SIZEOF_UNSIGNED_LONG)
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# if (ULONG_MAX == UCL_0xffffffffL)
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# define SIZEOF_UNSIGNED_LONG 4
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# elif (ULONG_MAX >= UCL_0xffffffffL)
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# define SIZEOF_UNSIGNED_LONG 8
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# else
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# error "SIZEOF_UNSIGNED_LONG"
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# endif
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#endif
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#if !defined(SIZEOF_SIZE_T)
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# define SIZEOF_SIZE_T SIZEOF_UNSIGNED_LONG
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#endif
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#if !defined(SIZE_T_MAX)
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# define SIZE_T_MAX UCL_UTYPE_MAX(SIZEOF_SIZE_T)
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#endif
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/***********************************************************************
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// <string.h> section
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************************************************************************/
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#if defined(NO_MEMCMP)
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# undef HAVE_MEMCMP
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#endif
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#if (UCL_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMCMP)
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# define ucl_memcmp memcmp
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#endif
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#if (UCL_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMCPY)
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# define ucl_memcpy memcpy
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#endif
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#if (UCL_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMMOVE)
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# define ucl_memmove memmove
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#endif
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#if (UCL_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMSET)
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# define ucl_memset memset
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#endif
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#if !defined(HAVE_MEMCMP)
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# undef memcmp
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# define memcmp ucl_memcmp
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#endif
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#if !defined(HAVE_MEMCPY)
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# undef memcpy
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# define memcpy ucl_memcpy
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#endif
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#if !defined(HAVE_MEMMOVE)
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# undef memmove
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# define memmove ucl_memmove
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#endif
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#if !defined(HAVE_MEMSET)
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# undef memset
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# define memset ucl_memset
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#endif
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/***********************************************************************
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// compiler and architecture specific stuff
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************************************************************************/
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/* Some defines that indicate if memory can be accessed at unaligned
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* memory addresses. You should also test that this is actually faster
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* even if it is allowed by your system.
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*/
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#if 1 && defined(__UCL_i386) && (UINT_MAX == UCL_0xffffffffL)
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# if !defined(UCL_UNALIGNED_OK_2) && (USHRT_MAX == 0xffff)
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# define UCL_UNALIGNED_OK_2
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# endif
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# if !defined(UCL_UNALIGNED_OK_4) && (UCL_UINT32_MAX == UCL_0xffffffffL)
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# define UCL_UNALIGNED_OK_4
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# endif
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#endif
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#if defined(UCL_UNALIGNED_OK_2) || defined(UCL_UNALIGNED_OK_4)
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# if !defined(UCL_UNALIGNED_OK)
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# define UCL_UNALIGNED_OK
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# endif
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#endif
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#if defined(__UCL_NO_UNALIGNED)
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# undef UCL_UNALIGNED_OK
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# undef UCL_UNALIGNED_OK_2
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# undef UCL_UNALIGNED_OK_4
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#endif
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#if defined(UCL_UNALIGNED_OK_2) && (USHRT_MAX != 0xffff)
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# error "UCL_UNALIGNED_OK_2 must not be defined on this system"
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#endif
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#if defined(UCL_UNALIGNED_OK_4) && (UCL_UINT32_MAX != UCL_0xffffffffL)
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# error "UCL_UNALIGNED_OK_4 must not be defined on this system"
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#endif
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/* Many modern processors can transfer 32bit words much faster than
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* bytes - this can significantly speed decompression.
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*/
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#if defined(__UCL_NO_ALIGNED)
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# undef UCL_ALIGNED_OK_4
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#endif
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#if defined(UCL_ALIGNED_OK_4) && (UCL_UINT32_MAX != UCL_0xffffffffL)
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# error "UCL_ALIGNED_OK_4 must not be defined on this system"
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#endif
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/* Definitions for byte order, according to significance of bytes, from low
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* addresses to high addresses. The value is what you get by putting '4'
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* in the most significant byte, '3' in the second most significant byte,
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* '2' in the second least significant byte, and '1' in the least
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* significant byte.
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* The byte order is only needed if we use UCL_UNALIGNED_OK.
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*/
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#define UCL_LITTLE_ENDIAN 1234
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#define UCL_BIG_ENDIAN 4321
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#define UCL_PDP_ENDIAN 3412
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#if !defined(UCL_BYTE_ORDER)
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# if defined(MFX_BYTE_ORDER)
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# define UCL_BYTE_ORDER MFX_BYTE_ORDER
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# elif defined(__UCL_i386)
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# define UCL_BYTE_ORDER UCL_LITTLE_ENDIAN
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# elif defined(BYTE_ORDER)
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# define UCL_BYTE_ORDER BYTE_ORDER
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# elif defined(__BYTE_ORDER)
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# define UCL_BYTE_ORDER __BYTE_ORDER
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# endif
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#endif
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#if defined(UCL_BYTE_ORDER)
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# if (UCL_BYTE_ORDER != UCL_LITTLE_ENDIAN) && \
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(UCL_BYTE_ORDER != UCL_BIG_ENDIAN)
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# error "invalid UCL_BYTE_ORDER"
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# endif
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#endif
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#if defined(UCL_UNALIGNED_OK) && !defined(UCL_BYTE_ORDER)
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# error "UCL_BYTE_ORDER is not defined"
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#endif
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/***********************************************************************
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// some globals
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************************************************************************/
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__UCL_EXTERN_C int __ucl_init_done;
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__UCL_EXTERN_C const ucl_byte __ucl_copyright[];
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UCL_EXTERN(const ucl_byte *) ucl_copyright(void);
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__UCL_EXTERN_C const ucl_uint32 _ucl_crc32_table[256];
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/***********************************************************************
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// ANSI C preprocessor macros
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************************************************************************/
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#define _UCL_STRINGIZE(x) #x
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#define _UCL_MEXPAND(x) _UCL_STRINGIZE(x)
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/* concatenate */
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#define _UCL_CONCAT2(a,b) a ## b
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#define _UCL_CONCAT3(a,b,c) a ## b ## c
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#define _UCL_CONCAT4(a,b,c,d) a ## b ## c ## d
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#define _UCL_CONCAT5(a,b,c,d,e) a ## b ## c ## d ## e
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/* expand and concatenate (by using one level of indirection) */
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#define _UCL_ECONCAT2(a,b) _UCL_CONCAT2(a,b)
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#define _UCL_ECONCAT3(a,b,c) _UCL_CONCAT3(a,b,c)
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#define _UCL_ECONCAT4(a,b,c,d) _UCL_CONCAT4(a,b,c,d)
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#define _UCL_ECONCAT5(a,b,c,d,e) _UCL_CONCAT5(a,b,c,d,e)
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/***********************************************************************
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//
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************************************************************************/
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#include "ucl_ptr.h"
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#endif /* already included */
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/*
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vi:ts=4:et
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*/
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