1/* zutil.h -- internal interface and configuration of the compression library
2
3    Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
4    This program and the accompanying materials are licensed and made available under
5    the terms and conditions of the BSD License that accompanies this distribution.
6    The full text of the license may be found at
7    http://opensource.org/licenses/bsd-license.
8
9    THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10    WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11
12 * Copyright (C) 1995-2005 Jean-loup Gailly.
13 * For conditions of distribution and use, see copyright notice in zlib.h
14**/
15
16/* WARNING: this file should *not* be used by applications. It is
17   part of the implementation of the compression library and is
18   subject to change. Applications should only use zlib.h.
19 */
20
21#ifndef ZUTIL_H
22#define ZUTIL_H
23
24#define ZLIB_INTERNAL
25#include "zlib.h"
26
27#if defined(UEFI_C_SOURCE) || defined(STDC)
28#  ifndef _WIN32_WCE
29#    include <stddef.h>
30#  endif
31#  include <string.h>
32#  include <stdlib.h>
33#endif
34#ifdef NO_ERRNO_H
35#   ifdef _WIN32_WCE
36      /* The Microsoft C Run-Time Library for Windows CE doesn't have
37       * errno.  We define it as a global variable to simplify porting.
38       * Its value is always 0 and should not be used.  We rename it to
39       * avoid conflict with other libraries that use the same workaround.
40       */
41#     define errno z_errno
42#   endif
43    extern int errno;
44#else
45#  ifndef _WIN32_WCE
46#    include <errno.h>
47#  endif
48#endif
49
50#ifndef local
51#  define local static
52#endif
53/* compile with -Dlocal if your debugger can't find static symbols */
54
55typedef unsigned char  uch;
56typedef uch FAR uchf;
57typedef unsigned short ush;
58typedef ush FAR ushf;
59typedef unsigned long  ulg;
60
61extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
62/* (size given to avoid silly warnings with Visual C++) */
63
64#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
65
66#define ERR_RETURN(strm,err) \
67  return (strm->msg = (char*)ERR_MSG(err), (err))
68/* To be used only when the state is known to be valid */
69
70        /* common constants */
71
72#ifndef DEF_WBITS
73#  define DEF_WBITS MAX_WBITS
74#endif
75/* default windowBits for decompression. MAX_WBITS is for compression only */
76
77#if MAX_MEM_LEVEL >= 8
78#  define DEF_MEM_LEVEL 8
79#else
80#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
81#endif
82/* default memLevel */
83
84#define STORED_BLOCK 0
85#define STATIC_TREES 1
86#define DYN_TREES    2
87/* The three kinds of block type */
88
89#define MIN_MATCH  3
90#define MAX_MATCH  258
91/* The minimum and maximum match lengths */
92
93#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
94
95        /* target dependencies */
96
97#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
98#  define OS_CODE  0x00
99#  if defined(__TURBOC__) || defined(__BORLANDC__)
100#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
101       /* Allow compilation with ANSI keywords only enabled */
102       void _Cdecl farfree( void *block );
103       void *_Cdecl farmalloc( unsigned long nbytes );
104#    else
105#      include <alloc.h>
106#    endif
107#  else /* MSC or DJGPP */
108#    include <malloc.h>
109#  endif
110#endif
111
112#ifdef AMIGA
113#  define OS_CODE  0x01
114#endif
115
116#if defined(VAXC) || defined(VMS)
117#  define OS_CODE  0x02
118#  define F_OPEN(name, mode) \
119     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
120#endif
121
122#if defined(ATARI) || defined(atarist)
123#  define OS_CODE  0x05
124#endif
125
126#ifdef OS2
127#  define OS_CODE  0x06
128#  ifdef M_I86
129     #include <malloc.h>
130#  endif
131#endif
132
133#if defined(MACOS) || defined(TARGET_OS_MAC)
134#  define OS_CODE  0x07
135#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
136#    include <unix.h> /* for fdopen */
137#  else
138#    ifndef fdopen
139#      define fdopen(fd,mode) NULL /* No fdopen() */
140#    endif
141#  endif
142#endif
143
144#ifdef TOPS20
145#  define OS_CODE  0x0a
146#endif
147
148#ifdef WIN32
149#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
150#    define OS_CODE  0x0b
151#  endif
152#endif
153
154#ifdef __50SERIES /* Prime/PRIMOS */
155#  define OS_CODE  0x0f
156#endif
157
158#if defined(_BEOS_) || defined(RISCOS)
159#  define fdopen(fd,mode) NULL /* No fdopen() */
160#endif
161
162#if !defined(UEFI_C_SOURCE) && (defined(_MSC_VER) && (_MSC_VER > 600))
163#  if defined(_WIN32_WCE)
164#    define fdopen(fd,mode) NULL /* No fdopen() */
165#    ifndef _PTRDIFF_T_DEFINED
166       typedef int ptrdiff_t;
167#      define _PTRDIFF_T_DEFINED
168#    endif
169#  else
170#    define fdopen(fd,type)  _fdopen(fd,type)
171#  endif
172#endif
173
174        /* common defaults */
175
176#ifndef OS_CODE
177#  define OS_CODE  0x03  /* assume Unix */
178#endif
179
180#ifndef F_OPEN
181#  define F_OPEN(name, mode) fopen((name), (mode))
182#endif
183
184         /* functions */
185
186#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
187#  ifndef HAVE_VSNPRINTF
188#    define HAVE_VSNPRINTF
189#  endif
190#endif
191#if defined(__CYGWIN__)
192#  ifndef HAVE_VSNPRINTF
193#    define HAVE_VSNPRINTF
194#  endif
195#endif
196#ifndef HAVE_VSNPRINTF
197#  ifdef MSDOS
198     /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
199        but for now we just assume it doesn't. */
200#    define NO_vsnprintf
201#  endif
202#  ifdef __TURBOC__
203#    define NO_vsnprintf
204#  endif
205#  ifdef WIN32
206     /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
207#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
208#      define vsnprintf _vsnprintf
209#    endif
210#  endif
211#  ifdef __SASC
212#    define NO_vsnprintf
213#  endif
214#endif
215#ifdef VMS
216#  define NO_vsnprintf
217#endif
218
219#if defined(pyr)
220#  define NO_MEMCPY
221#endif
222#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
223 /* Use our own functions for small and medium model with MSC <= 5.0.
224  * You may have to use the same strategy for Borland C (untested).
225  * The __SC__ check is for Symantec.
226  */
227#  define NO_MEMCPY
228#endif
229#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
230#  define HAVE_MEMCPY
231#endif
232#ifdef HAVE_MEMCPY
233#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
234#    define zmemcpy _fmemcpy
235#    define zmemcmp _fmemcmp
236#    define zmemzero(dest, len) _fmemset(dest, 0, len)
237#  else
238#    define zmemcpy memcpy
239#    define zmemcmp memcmp
240#    define zmemzero(dest, len) memset(dest, 0, len)
241#  endif
242#else
243   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
244   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
245   extern void zmemzero OF((Bytef* dest, uInt len));
246#endif
247
248/* Diagnostic functions */
249#ifdef DEBUG
250#  include <stdio.h>
251   extern int z_verbose;
252   extern void z_error    OF((char *m));
253#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
254#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
255#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
256#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
257#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
258#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
259#else
260#  define Assert(cond,msg)
261#  define Trace(x)
262#  define Tracev(x)
263#  define Tracevv(x)
264#  define Tracec(c,x)
265#  define Tracecv(c,x)
266#endif
267
268
269voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
270void   zcfree  OF((voidpf opaque, voidpf ptr));
271
272#define ZALLOC(strm, items, size) \
273           (*((strm)->zalloc))((strm)->opaque, (items), (size))
274#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
275#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
276
277#endif /* ZUTIL_H */
278