LXR uboot/lib/zlib/zutil.h

   1/* zutil.h -- internal interface and configuration of the compression library
   2 * Copyright (C) 1995-2005 Jean-loup Gailly.
   3 * For conditions of distribution and use, see copyright notice in zlib.h
   4 */
   5
   6/* WARNING: this file should *not* be used by applications. It is
   7   part of the implementation of the compression library and is
   8   subject to change. Applications should only use zlib.h.
   9 */
  10
  11/* @(#) $Id$ */
  12
  13#ifndef ZUTIL_H
  14#define ZUTIL_H
  15
  16#define ZLIB_INTERNAL
  17#include "zlib.h"
  18
  19#ifdef STDC
  20#  ifndef _WIN32_WCE
  21#    include <stddef.h>
  22#  endif
  23#  include <string.h>
  24#  include <stdlib.h>
  25#endif
  26#ifdef NO_ERRNO_H
  27#   ifdef _WIN32_WCE
  28      /* The Microsoft C Run-Time Library for Windows CE doesn't have
  29       * errno.  We define it as a global variable to simplify porting.
  30       * Its value is always 0 and should not be used.  We rename it to
  31       * avoid conflict with other libraries that use the same workaround.
  32       */
  33#     define errno z_errno
  34#   endif
  35    extern int errno;
  36#else
  37#  ifndef _WIN32_WCE
  38#    include <errno.h>
  39#  endif
  40#endif
  41
  42#ifndef local
  43#  define local static
  44#endif
  45/* compile with -Dlocal if your debugger can't find static symbols */
  46
  47typedef unsigned char  uch;
  48typedef uch FAR uchf;
  49typedef unsigned short ush;
  50typedef ush FAR ushf;
  51typedef unsigned long  ulg;
  52
  53extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
  54/* (size given to avoid silly warnings with Visual C++) */
  55
  56#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
  57
  58#define ERR_RETURN(strm,err) \
  59  return (strm->msg = (char*)ERR_MSG(err), (err))
  60/* To be used only when the state is known to be valid */
  61
  62        /* common constants */
  63
  64#ifndef DEF_WBITS
  65#  define DEF_WBITS MAX_WBITS
  66#endif
  67/* default windowBits for decompression. MAX_WBITS is for compression only */
  68
  69#if MAX_MEM_LEVEL >= 8
  70#  define DEF_MEM_LEVEL 8
  71#else
  72#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  73#endif
  74/* default memLevel */
  75
  76#define STORED_BLOCK 0
  77#define STATIC_TREES 1
  78#define DYN_TREES    2
  79/* The three kinds of block type */
  80
  81#define MIN_MATCH  3
  82#define MAX_MATCH  258
  83/* The minimum and maximum match lengths */
  84
  85         /* functions */
  86#ifdef CONFIG_GZIP_COMPRESSED
  87#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
  88#  define OS_CODE  0x03  /* assume Unix */
  89#endif
  90
  91#include <linux/string.h>
  92#define zmemcpy memcpy
  93#define zmemcmp memcmp
  94#define zmemzero(dest, len) memset(dest, 0, len)
  95
  96/* Diagnostic functions */
  97#ifdef DEBUG
  98/* Not valid for U-Boot
  99#  include <stdio.h> */
 100   extern int z_verbose;
 101   extern void z_error    OF((char *m));
 102#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
 103#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
 104#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
 105#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
 106#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
 107#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
 108#else
 109#  define Assert(cond,msg)
 110#  define Trace(x)
 111#  define Tracev(x)
 112#  define Tracevv(x)
 113#  define Tracec(c,x)
 114#  define Tracecv(c,x)
 115#endif
 116
 117
 118voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
 119void   zcfree  OF((voidpf opaque, voidpf ptr, unsigned size));
 120
 121#define ZALLOC(strm, items, size) \
 122           (*((strm)->zalloc))((strm)->opaque, (items), (size))
 123#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), 0)
 124#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
 125
 126#endif /* ZUTIL_H */
 127