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bootloader/u-boot_2015_04/lib/zlib/zutil.h 3.34 KB
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  /* zutil.h -- internal interface and configuration of the compression library
   * Copyright (C) 1995-2005 Jean-loup Gailly.
   * For conditions of distribution and use, see copyright notice in zlib.h
   */
  
  /* WARNING: this file should *not* be used by applications. It is
     part of the implementation of the compression library and is
     subject to change. Applications should only use zlib.h.
   */
  
  /* @(#) $Id$ */
  
  #ifndef ZUTIL_H
  #define ZUTIL_H
  
  #define ZLIB_INTERNAL
  #include "zlib.h"
  
  #ifdef STDC
  #  ifndef _WIN32_WCE
  #    include <stddef.h>
  #  endif
  #  include <string.h>
  #  include <stdlib.h>
  #endif
  #ifdef NO_ERRNO_H
  #   ifdef _WIN32_WCE
        /* The Microsoft C Run-Time Library for Windows CE doesn't have
         * errno.  We define it as a global variable to simplify porting.
         * Its value is always 0 and should not be used.  We rename it to
         * avoid conflict with other libraries that use the same workaround.
         */
  #     define errno z_errno
  #   endif
      extern int errno;
  #else
  #  ifndef _WIN32_WCE
  #    include <errno.h>
  #  endif
  #endif
  
  #ifndef local
  #  define local static
  #endif
  /* compile with -Dlocal if your debugger can't find static symbols */
  
  typedef unsigned char  uch;
  typedef uch FAR uchf;
  typedef unsigned short ush;
  typedef ush FAR ushf;
  typedef unsigned long  ulg;
  
  extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
  /* (size given to avoid silly warnings with Visual C++) */
  
  #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
  
  #define ERR_RETURN(strm,err) \
    return (strm->msg = (char*)ERR_MSG(err), (err))
  /* To be used only when the state is known to be valid */
  
          /* common constants */
  
  #ifndef DEF_WBITS
  #  define DEF_WBITS MAX_WBITS
  #endif
  /* default windowBits for decompression. MAX_WBITS is for compression only */
  
  #if MAX_MEM_LEVEL >= 8
  #  define DEF_MEM_LEVEL 8
  #else
  #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  #endif
  /* default memLevel */
  
  #define STORED_BLOCK 0
  #define STATIC_TREES 1
  #define DYN_TREES    2
  /* The three kinds of block type */
  
  #define MIN_MATCH  3
  #define MAX_MATCH  258
  /* The minimum and maximum match lengths */
  
  	 /* functions */
  #ifdef CONFIG_GZIP_COMPRESSED
  #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
  #  define OS_CODE  0x03  /* assume Unix */
  #endif
  
  #include <linux/string.h>
  #define zmemcpy memcpy
  #define zmemcmp memcmp
  #define zmemzero(dest, len) memset(dest, 0, len)
  
  /* Diagnostic functions */
  #ifdef DEBUG
  /* Not valid for U-boot
  #  include <stdio.h> */
     extern int z_verbose;
     extern void z_error    OF((char *m));
  #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
  #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
  #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
  #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
  #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
  #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
  #else
  #  define Assert(cond,msg)
  #  define Trace(x)
  #  define Tracev(x)
  #  define Tracevv(x)
  #  define Tracec(c,x)
  #  define Tracecv(c,x)
  #endif
  
  
  voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
  void   zcfree  OF((voidpf opaque, voidpf ptr, unsigned size));
  
  #define ZALLOC(strm, items, size) \
             (*((strm)->zalloc))((strm)->opaque, (items), (size))
  #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), 0)
  #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
  
  #endif /* ZUTIL_H */