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
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.
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.
33 # define errno z_errno
45 /* compile with -Dlocal if your debugger can't find static symbols */
47 typedef unsigned char uch;
49 typedef unsigned short ush;
51 typedef unsigned long ulg;
53 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
54 /* (size given to avoid silly warnings with Visual C++) */
56 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
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 */
62 /* common constants */
65 # define DEF_WBITS MAX_WBITS
67 /* default windowBits for decompression. MAX_WBITS is for compression only */
69 #if MAX_MEM_LEVEL >= 8
70 # define DEF_MEM_LEVEL 8
72 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
74 /* default memLevel */
76 #define STORED_BLOCK 0
77 #define STATIC_TREES 1
79 /* The three kinds of block type */
83 /* The minimum and maximum match lengths */
87 #include <linux/string.h>
88 #define zmemcpy memcpy
89 #define zmemcmp memcmp
90 #define zmemzero(dest, len) memset(dest, 0, len)
92 /* Diagnostic functions */
94 /* Not valid for U-boot
95 # include <stdio.h> */
97 extern void z_error OF((char *m));
98 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
99 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
100 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
101 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
102 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
103 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
105 # define Assert(cond,msg)
110 # define Tracecv(c,x)
114 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
115 void zcfree OF((voidpf opaque, voidpf ptr, unsigned size));
117 #define ZALLOC(strm, items, size) \
118 (*((strm)->zalloc))((strm)->opaque, (items), (size))
119 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), 0)
120 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}