RTEMS 6.1-rc6
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zutil.h
1/* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler
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#ifdef HAVE_HIDDEN
17# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
18#else
19# define ZLIB_INTERNAL
20#endif
21
22#include "zlib.h"
23
24#if defined(STDC) && !defined(Z_SOLO)
25# if !(defined(_WIN32_WCE) && defined(_MSC_VER))
26# include <stddef.h>
27# endif
28# include <string.h>
29# include <stdlib.h>
30#endif
31
32#ifndef local
33# define local static
34#endif
35/* since "static" is used to mean two completely different things in C, we
36 define "local" for the non-static meaning of "static", for readability
37 (compile with -Dlocal if your debugger can't find static symbols) */
38
39typedef unsigned char uch;
40typedef uch FAR uchf;
41typedef unsigned short ush;
42typedef ush FAR ushf;
43typedef unsigned long ulg;
44
45#ifndef __rtems__
46#if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC)
47# include <limits.h>
48# if (ULONG_MAX == 0xffffffffffffffff)
49# define Z_U8 unsigned long
50# elif (ULLONG_MAX == 0xffffffffffffffff)
51# define Z_U8 unsigned long long
52# elif (UINT_MAX == 0xffffffffffffffff)
53# define Z_U8 unsigned
54# endif
55#endif
56#else /* __rtems__ */
57#define Z_U8 uint64_t
58#endif /* __rtems__ */
59
60extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
61/* (size given to avoid silly warnings with Visual C++) */
62
63#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
64
65#define ERR_RETURN(strm,err) \
66 return (strm->msg = ERR_MSG(err), (err))
67/* To be used only when the state is known to be valid */
68
69 /* common constants */
70
71#ifndef DEF_WBITS
72# define DEF_WBITS MAX_WBITS
73#endif
74/* default windowBits for decompression. MAX_WBITS is for compression only */
75
76#if MAX_MEM_LEVEL >= 8
77# define DEF_MEM_LEVEL 8
78#else
79# define DEF_MEM_LEVEL MAX_MEM_LEVEL
80#endif
81/* default memLevel */
82
83#define STORED_BLOCK 0
84#define STATIC_TREES 1
85#define DYN_TREES 2
86/* The three kinds of block type */
87
88#define MIN_MATCH 3
89#define MAX_MATCH 258
90/* The minimum and maximum match lengths */
91
92#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
93
94 /* target dependencies */
95
96#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
97# define OS_CODE 0x00
98# ifndef Z_SOLO
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#endif
112
113#ifdef AMIGA
114# define OS_CODE 1
115#endif
116
117#if defined(VAXC) || defined(VMS)
118# define OS_CODE 2
119# define F_OPEN(name, mode) \
120 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
121#endif
122
123#ifdef __370__
124# if __TARGET_LIB__ < 0x20000000
125# define OS_CODE 4
126# elif __TARGET_LIB__ < 0x40000000
127# define OS_CODE 11
128# else
129# define OS_CODE 8
130# endif
131#endif
132
133#if defined(ATARI) || defined(atarist)
134# define OS_CODE 5
135#endif
136
137#ifdef OS2
138# define OS_CODE 6
139# if defined(M_I86) && !defined(Z_SOLO)
140# include <malloc.h>
141# endif
142#endif
143
144#if defined(MACOS) || defined(TARGET_OS_MAC)
145# define OS_CODE 7
146# ifndef Z_SOLO
147# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
148# include <unix.h> /* for fdopen */
149# else
150# ifndef fdopen
151# define fdopen(fd,mode) NULL /* No fdopen() */
152# endif
153# endif
154# endif
155#endif
156
157#ifdef __acorn
158# define OS_CODE 13
159#endif
160
161#if defined(WIN32) && !defined(__CYGWIN__)
162# define OS_CODE 10
163#endif
164
165#ifdef _BEOS_
166# define OS_CODE 16
167#endif
168
169#ifdef __TOS_OS400__
170# define OS_CODE 18
171#endif
172
173#ifdef __APPLE__
174# define OS_CODE 19
175#endif
176
177#if defined(_BEOS_) || defined(RISCOS)
178# define fdopen(fd,mode) NULL /* No fdopen() */
179#endif
180
181#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
182# if defined(_WIN32_WCE)
183# define fdopen(fd,mode) NULL /* No fdopen() */
184# else
185# define fdopen(fd,type) _fdopen(fd,type)
186# endif
187#endif
188
189#if defined(__BORLANDC__) && !defined(MSDOS)
190 #pragma warn -8004
191 #pragma warn -8008
192 #pragma warn -8066
193#endif
194
195/* provide prototypes for these when building zlib without LFS */
196#if !defined(_WIN32) && \
197 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
198 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
199 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
200 ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
201#endif
202
203 /* common defaults */
204
205#ifndef OS_CODE
206# define OS_CODE 3 /* assume Unix */
207#endif
208
209#ifndef F_OPEN
210# define F_OPEN(name, mode) fopen((name), (mode))
211#endif
212
213 /* functions */
214
215#if defined(pyr) || defined(Z_SOLO)
216# define NO_MEMCPY
217#endif
218#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
219 /* Use our own functions for small and medium model with MSC <= 5.0.
220 * You may have to use the same strategy for Borland C (untested).
221 * The __SC__ check is for Symantec.
222 */
223# define NO_MEMCPY
224#endif
225#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
226# define HAVE_MEMCPY
227#endif
228#ifdef HAVE_MEMCPY
229# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
230# define zmemcpy _fmemcpy
231# define zmemcmp _fmemcmp
232# define zmemzero(dest, len) _fmemset(dest, 0, len)
233# else
234# define zmemcpy memcpy
235# define zmemcmp memcmp
236# define zmemzero(dest, len) memset(dest, 0, len)
237# endif
238#else
239 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
240 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
241 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
242#endif
243
244/* Diagnostic functions */
245#ifdef ZLIB_DEBUG
246# include <stdio.h>
247 extern int ZLIB_INTERNAL z_verbose;
248 extern void ZLIB_INTERNAL z_error OF((char *m));
249# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
250# define Trace(x) {if (z_verbose>=0) fprintf x ;}
251# define Tracev(x) {if (z_verbose>0) fprintf x ;}
252# define Tracevv(x) {if (z_verbose>1) fprintf x ;}
253# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
254# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
255#else
256# define Assert(cond,msg)
257# define Trace(x)
258# define Tracev(x)
259# define Tracevv(x)
260# define Tracec(c,x)
261# define Tracecv(c,x)
262#endif
263
264#ifndef Z_SOLO
265 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
266 unsigned size));
267 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
268#endif
269
270#define ZALLOC(strm, items, size) \
271 (*((strm)->zalloc))((strm)->opaque, (items), (size))
272#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
273#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
274
275/* Reverse the bytes in a 32-bit value */
276#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
277 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
278
279#endif /* ZUTIL_H */
opaque
Definition: bootldr.h:42
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