1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2024 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 28 typedef long ptrdiff_t; 29 #else 30 #ifdef _STANDALONE 31 #include <lib/libsa/stand.h> 32 #else 33 #if defined(STDC) && !defined(Z_SOLO) 34 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 35 # include <stddef.h> 36 # endif 37 # include <string.h> 38 # include <stdlib.h> 39 #endif 40 #endif 41 #endif 42 43 #ifdef Z_SOLO 44 typedef long ptrdiff_t; 45 #endif 46 47 #ifndef local 48 # define local static 49 #endif 50 /* since "static" is used to mean two completely different things in C, we 51 define "local" for the non-static meaning of "static", for readability 52 (compile with -Dlocal if your debugger can't find static symbols) */ 53 54 typedef unsigned char uch; 55 typedef uch FAR uchf; 56 typedef unsigned short ush; 57 typedef ush FAR ushf; 58 typedef unsigned long ulg; 59 60 #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC) 61 # include <sys/limits.h> 62 # if (ULONG_MAX == 0xffffffffffffffff) 63 # define Z_U8 unsigned long 64 # elif (ULLONG_MAX == 0xffffffffffffffff) 65 # define Z_U8 unsigned long long 66 # elif (ULONG_LONG_MAX == 0xffffffffffffffff) 67 # define Z_U8 unsigned long long 68 # elif (UINT_MAX == 0xffffffffffffffff) 69 # define Z_U8 unsigned 70 # endif 71 #endif 72 73 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 74 /* (size given to avoid silly warnings with Visual C++) */ 75 76 #define ERR_MSG(err) z_errmsg[(err) < -6 || (err) > 2 ? 9 : 2 - (err)] 77 78 #define ERR_RETURN(strm,err) \ 79 return (strm->msg = ERR_MSG(err), (err)) 80 /* To be used only when the state is known to be valid */ 81 82 /* common constants */ 83 #if MAX_WBITS < 9 || MAX_WBITS > 15 84 # error MAX_WBITS must be in 9..15 85 #endif 86 #ifndef DEF_WBITS 87 # define DEF_WBITS MAX_WBITS 88 #endif 89 /* default windowBits for decompression. MAX_WBITS is for compression only */ 90 91 #if MAX_MEM_LEVEL >= 8 92 # define DEF_MEM_LEVEL 8 93 #else 94 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 95 #endif 96 /* default memLevel */ 97 98 #define STORED_BLOCK 0 99 #define STATIC_TREES 1 100 #define DYN_TREES 2 101 /* The three kinds of block type */ 102 103 #define MIN_MATCH 3 104 #define MAX_MATCH 258 105 /* The minimum and maximum match lengths */ 106 107 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 108 109 /* target dependencies */ 110 111 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 112 # define OS_CODE 0x00 113 # ifndef Z_SOLO 114 # if defined(__TURBOC__) || defined(__BORLANDC__) 115 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 116 /* Allow compilation with ANSI keywords only enabled */ 117 void _Cdecl farfree( void *block ); 118 void *_Cdecl farmalloc( unsigned long nbytes ); 119 # else 120 # include <alloc.h> 121 # endif 122 # else /* MSC or DJGPP */ 123 # include <malloc.h> 124 # endif 125 # endif 126 #endif 127 128 #ifdef AMIGA 129 # define OS_CODE 1 130 #endif 131 132 #if defined(VAXC) || defined(VMS) 133 # define OS_CODE 2 134 # define F_OPEN(name, mode) \ 135 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 136 #endif 137 138 #ifdef __370__ 139 # if __TARGET_LIB__ < 0x20000000 140 # define OS_CODE 4 141 # elif __TARGET_LIB__ < 0x40000000 142 # define OS_CODE 11 143 # else 144 # define OS_CODE 8 145 # endif 146 #endif 147 148 #if defined(ATARI) || defined(atarist) 149 # define OS_CODE 5 150 #endif 151 152 #ifdef OS2 153 # define OS_CODE 6 154 # if defined(M_I86) && !defined(Z_SOLO) 155 # include <malloc.h> 156 # endif 157 #endif 158 159 #if defined(MACOS) 160 # define OS_CODE 7 161 #endif 162 163 #if defined(__acorn) || defined(__riscos) 164 # define OS_CODE 13 165 #endif 166 167 #if defined(WIN32) && !defined(__CYGWIN__) 168 # define OS_CODE 10 169 #endif 170 171 #ifdef _BEOS_ 172 # define OS_CODE 16 173 #endif 174 175 #ifdef __TOS_OS400__ 176 # define OS_CODE 18 177 #endif 178 179 #ifdef __APPLE__ 180 # define OS_CODE 19 181 #endif 182 183 #if defined(__BORLANDC__) && !defined(MSDOS) 184 #pragma warn -8004 185 #pragma warn -8008 186 #pragma warn -8066 187 #endif 188 189 /* provide prototypes for these when building zlib without LFS */ 190 #ifndef Z_LARGE64 191 ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off64_t); 192 ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off64_t); 193 ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off64_t); 194 #endif 195 196 /* common defaults */ 197 198 #ifndef OS_CODE 199 # define OS_CODE 3 /* assume Unix */ 200 #endif 201 202 #ifndef F_OPEN 203 # define F_OPEN(name, mode) fopen((name), (mode)) 204 #endif 205 206 /* functions */ 207 208 #if defined(pyr) || defined(Z_SOLO) 209 # define NO_MEMCPY 210 #endif 211 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 212 /* Use our own functions for small and medium model with MSC <= 5.0. 213 * You may have to use the same strategy for Borland C (untested). 214 * The __SC__ check is for Symantec. 215 */ 216 # define NO_MEMCPY 217 #endif 218 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 219 # define HAVE_MEMCPY 220 #endif 221 #ifdef HAVE_MEMCPY 222 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 223 # define zmemcpy _fmemcpy 224 # define zmemcmp _fmemcmp 225 # define zmemzero(dest, len) _fmemset(dest, 0, len) 226 # else 227 # define zmemcpy memcpy 228 # define zmemcmp memcmp 229 # define zmemzero(dest, len) memset(dest, 0, len) 230 # endif 231 #else 232 void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len); 233 int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len); 234 void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len); 235 #endif 236 237 /* Diagnostic functions */ 238 #ifdef ZLIB_DEBUG 239 # include <stdio.h> 240 extern int ZLIB_INTERNAL z_verbose; 241 extern void ZLIB_INTERNAL z_error(char *m); 242 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 243 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 244 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 245 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 246 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 247 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 248 #else 249 # define Assert(cond,msg) 250 # define Trace(x) 251 # define Tracev(x) 252 # define Tracevv(x) 253 # define Tracec(c,x) 254 # define Tracecv(c,x) 255 #endif 256 257 #ifndef Z_SOLO 258 voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, 259 unsigned size); 260 void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr, unsigned size); 261 #endif 262 263 #define ZALLOC(strm, items, size) \ 264 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 265 #define ZFREE(strm, addr, size) \ 266 (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), (size)) 267 #define TRY_FREE(s, p, size) ZFREE(s, p, size) 268 269 /* Reverse the bytes in a 32-bit value */ 270 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 271 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 272 273 #endif /* ZUTIL_H */ 274