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 #ifndef ZUTIL_H 12 #define ZUTIL_H 13 14 #ifdef HAVE_HIDDEN 15 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 16 #else 17 # define ZLIB_INTERNAL 18 #endif 19 20 #include "zlib.h" 21 22 #ifdef _KERNEL 23 #include <sys/param.h> 24 #include <sys/systm.h> 25 26 #define MY_ZCALLOC 27 #define NOBYFOUR 28 29 typedef long ptrdiff_t; 30 #else 31 #ifdef _STANDALONE 32 #include <lib/libsa/stand.h> 33 #else 34 #if defined(STDC) && !defined(Z_SOLO) 35 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 36 # include <stddef.h> 37 # endif 38 # include <string.h> 39 # include <stdlib.h> 40 #endif 41 #endif 42 #endif 43 44 #ifdef Z_SOLO 45 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 46 #endif 47 48 #ifndef local 49 # define local static 50 #endif 51 /* since "static" is used to mean two completely different things in C, we 52 define "local" for the non-static meaning of "static", for readability 53 (compile with -Dlocal if your debugger can't find static symbols) */ 54 55 typedef unsigned char uch; 56 typedef uch FAR uchf; 57 typedef unsigned short ush; 58 typedef ush FAR ushf; 59 typedef unsigned long ulg; 60 61 #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC) 62 # include <sys/limits.h> 63 # if (ULONG_MAX == 0xffffffffffffffff) 64 # define Z_U8 unsigned long 65 # elif (ULLONG_MAX == 0xffffffffffffffff) 66 # define Z_U8 unsigned long long 67 # elif (UINT_MAX == 0xffffffffffffffff) 68 # define Z_U8 unsigned 69 # endif 70 #endif 71 72 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 73 /* (size given to avoid silly warnings with Visual C++) */ 74 75 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 76 77 #define ERR_RETURN(strm,err) \ 78 return (strm->msg = ERR_MSG(err), (err)) 79 /* To be used only when the state is known to be valid */ 80 81 /* common constants */ 82 83 #ifndef DEF_WBITS 84 # define DEF_WBITS MAX_WBITS 85 #endif 86 /* default windowBits for decompression. MAX_WBITS is for compression only */ 87 88 #if MAX_MEM_LEVEL >= 8 89 # define DEF_MEM_LEVEL 8 90 #else 91 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 92 #endif 93 /* default memLevel */ 94 95 #define STORED_BLOCK 0 96 #define STATIC_TREES 1 97 #define DYN_TREES 2 98 /* The three kinds of block type */ 99 100 #define MIN_MATCH 3 101 #define MAX_MATCH 258 102 /* The minimum and maximum match lengths */ 103 104 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 105 106 /* target dependencies */ 107 108 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 109 # define OS_CODE 0x00 110 # ifndef Z_SOLO 111 # if defined(__TURBOC__) || defined(__BORLANDC__) 112 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 113 /* Allow compilation with ANSI keywords only enabled */ 114 void _Cdecl farfree( void *block ); 115 void *_Cdecl farmalloc( unsigned long nbytes ); 116 # else 117 # include <alloc.h> 118 # endif 119 # else /* MSC or DJGPP */ 120 # include <malloc.h> 121 # endif 122 # endif 123 #endif 124 125 #ifdef AMIGA 126 # define OS_CODE 1 127 #endif 128 129 #if defined(VAXC) || defined(VMS) 130 # define OS_CODE 2 131 # define F_OPEN(name, mode) \ 132 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 133 #endif 134 135 #ifdef __370__ 136 # if __TARGET_LIB__ < 0x20000000 137 # define OS_CODE 4 138 # elif __TARGET_LIB__ < 0x40000000 139 # define OS_CODE 11 140 # else 141 # define OS_CODE 8 142 # endif 143 #endif 144 145 #if defined(ATARI) || defined(atarist) 146 # define OS_CODE 5 147 #endif 148 149 #ifdef OS2 150 # define OS_CODE 6 151 # if defined(M_I86) && !defined(Z_SOLO) 152 # include <malloc.h> 153 # endif 154 #endif 155 156 #if defined(MACOS) || defined(TARGET_OS_MAC) 157 # define OS_CODE 7 158 # ifndef Z_SOLO 159 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 160 # include <unix.h> /* for fdopen */ 161 # else 162 # ifndef fdopen 163 # define fdopen(fd,mode) NULL /* No fdopen() */ 164 # endif 165 # endif 166 # endif 167 #endif 168 169 #ifdef __acorn 170 # define OS_CODE 13 171 #endif 172 173 #if defined(WIN32) && !defined(__CYGWIN__) 174 # define OS_CODE 10 175 #endif 176 177 #ifdef _BEOS_ 178 # define OS_CODE 16 179 #endif 180 181 #ifdef __TOS_OS400__ 182 # define OS_CODE 18 183 #endif 184 185 #ifdef __APPLE__ 186 # define OS_CODE 19 187 #endif 188 189 #if defined(_BEOS_) || defined(RISCOS) 190 # define fdopen(fd,mode) NULL /* No fdopen() */ 191 #endif 192 193 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 194 # if defined(_WIN32_WCE) 195 # define fdopen(fd,mode) NULL /* No fdopen() */ 196 # else 197 # define fdopen(fd,type) _fdopen(fd,type) 198 # endif 199 #endif 200 201 #if defined(__BORLANDC__) && !defined(MSDOS) 202 #pragma warn -8004 203 #pragma warn -8008 204 #pragma warn -8066 205 #endif 206 207 /* provide prototypes for these when building zlib without LFS */ 208 #if !defined(_WIN32) && \ 209 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 210 ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t); 211 ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t); 212 ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t); 213 #endif 214 215 /* common defaults */ 216 217 #ifndef OS_CODE 218 # define OS_CODE 3 /* assume Unix */ 219 #endif 220 221 #ifndef F_OPEN 222 # define F_OPEN(name, mode) fopen((name), (mode)) 223 #endif 224 225 /* functions */ 226 227 #if defined(pyr) || defined(Z_SOLO) 228 # define NO_MEMCPY 229 #endif 230 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 231 /* Use our own functions for small and medium model with MSC <= 5.0. 232 * You may have to use the same strategy for Borland C (untested). 233 * The __SC__ check is for Symantec. 234 */ 235 # define NO_MEMCPY 236 #endif 237 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 238 # define HAVE_MEMCPY 239 #endif 240 #ifdef HAVE_MEMCPY 241 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 242 # define zmemcpy _fmemcpy 243 # define zmemcmp _fmemcmp 244 # define zmemzero(dest, len) _fmemset(dest, 0, len) 245 # else 246 # define zmemcpy memcpy 247 # define zmemcmp memcmp 248 # define zmemzero(dest, len) memset(dest, 0, len) 249 # endif 250 #else 251 void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len); 252 int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len); 253 void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len); 254 #endif 255 256 /* Diagnostic functions */ 257 #ifdef ZLIB_DEBUG 258 # include <stdio.h> 259 extern int ZLIB_INTERNAL z_verbose; 260 extern void ZLIB_INTERNAL z_error(char *m); 261 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 262 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 263 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 264 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 265 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 266 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 267 #else 268 # define Assert(cond,msg) 269 # define Trace(x) 270 # define Tracev(x) 271 # define Tracevv(x) 272 # define Tracec(c,x) 273 # define Tracecv(c,x) 274 #endif 275 276 #ifndef Z_SOLO 277 voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, 278 unsigned size); 279 void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr, unsigned size); 280 #endif 281 282 #define ZALLOC(strm, items, size) \ 283 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 284 #define ZFREE(strm, addr, size) \ 285 (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), (size)) 286 #define TRY_FREE(s, p, size) ZFREE(s, p, size) 287 288 /* Reverse the bytes in a 32-bit value */ 289 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 290 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 291 292 #endif /* ZUTIL_H */ 293