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 47 typedef unsigned char uch; 48 typedef uch FAR uchf; 49 typedef unsigned short ush; 50 typedef ush FAR ushf; 51 typedef unsigned long ulg; 52 53 extern 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 116 117 118 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 119 void 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