1 /* $MirOS: src/kern/z/zutil.h,v 1.12 2013/10/31 20:06:14 tg Exp $ */ 2 3 /* zutil.h -- internal interface and configuration of the compression library 4 * Copyright © 2013 5 * Thorsten “mirabilos” Glaser <tg@mirbsd.org> 6 * Copyright (C) 1995-2013 Jean-loup Gailly. 7 * For conditions of distribution and use, see copyright notice in zlib.h 8 */ 9 10 /* WARNING: this file should *not* be used by applications. It is 11 part of the implementation of the compression library and is 12 subject to change. Applications should only use zlib.h. 13 */ 14 15 /* @(#) $Id$ */ 16 17 #ifndef ZUTIL_H 18 #define ZUTIL_H 19 20 #if defined(__unix__) 21 #include <sys/param.h> 22 #endif 23 24 #ifdef HAVE_HIDDEN 25 # define ZLIB_INTERNAL __attribute__((__visibility__("hidden"))) 26 #else 27 # define ZLIB_INTERNAL 28 #endif 29 30 #include "zlib.h" 31 32 #undef zRCSID 33 #if defined(_STANDALONE) 34 # include <stand.h> 35 # include <sys/stddef.h> 36 # define zRCSID(x) /* nothing */ 37 # define NO_ERRNO_H 38 #elif defined(_KERNEL) 39 # include <sys/systm.h> 40 # include <sys/stddef.h> 41 # include <dev/rndvar.h> 42 # define zRCSID(x) /* nothing */ 43 # define NO_ERRNO_H 44 #elif defined(STDC) && !defined(Z_SOLO) 45 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 46 # include <stddef.h> 47 # endif 48 # include <string.h> 49 # include <stdlib.h> 50 # define zRCSID(x) __RCSID(x); 51 #endif 52 53 #ifdef Z_SOLO 54 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 55 #endif 56 57 #ifndef local 58 # define local static 59 #endif 60 /* compile with -Dlocal if your debugger can't find static symbols */ 61 62 typedef unsigned char uch; 63 typedef uch FAR uchf; 64 typedef unsigned short ush; 65 typedef ush FAR ushf; 66 typedef unsigned long ulg; 67 68 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 69 /* (size given to avoid silly warnings with Visual C++) */ 70 71 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 72 73 #define ERR_RETURN(strm,err) \ 74 return (strm->msg = ERR_MSG(err), (err)) 75 /* To be used only when the state is known to be valid */ 76 77 /* common constants */ 78 79 #ifndef DEF_WBITS 80 # define DEF_WBITS MAX_WBITS 81 #endif 82 /* default windowBits for decompression. MAX_WBITS is for compression only */ 83 84 #if MAX_MEM_LEVEL >= 8 85 # define DEF_MEM_LEVEL 8 86 #else 87 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 88 #endif 89 /* default memLevel */ 90 91 #define STORED_BLOCK 0 92 #define STATIC_TREES 1 93 #define DYN_TREES 2 94 /* The three kinds of block type */ 95 96 #define MIN_MATCH 3 97 #define MAX_MATCH 258 98 /* The minimum and maximum match lengths */ 99 100 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 101 102 /* target dependencies */ 103 104 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 105 # define OS_CODE 0x00 106 # ifndef Z_SOLO 107 # if defined(__TURBOC__) || defined(__BORLANDC__) 108 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 109 /* Allow compilation with ANSI keywords only enabled */ 110 void _Cdecl farfree( void *block ); 111 void *_Cdecl farmalloc( unsigned long nbytes ); 112 # else 113 # include <alloc.h> 114 # endif 115 # else /* MSC or DJGPP */ 116 # include <malloc.h> 117 # endif 118 # endif 119 #endif 120 121 #ifdef AMIGA 122 # define OS_CODE 0x01 123 #endif 124 125 #if defined(VAXC) || defined(VMS) 126 # define OS_CODE 0x02 127 # define F_OPEN(name, mode) \ 128 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 129 #endif 130 131 #if defined(ATARI) || defined(atarist) 132 # define OS_CODE 0x05 133 #endif 134 135 #ifdef OS2 136 # define OS_CODE 0x06 137 # if defined(M_I86) && !defined(Z_SOLO) 138 # include <malloc.h> 139 # endif 140 #endif 141 142 #if defined(MACOS) || defined(TARGET_OS_MAC) 143 # define OS_CODE 0x07 144 # ifndef Z_SOLO 145 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 146 # include <unix.h> /* for fdopen */ 147 # else 148 # ifndef fdopen 149 # define fdopen(fd,mode) NULL /* No fdopen() */ 150 # endif 151 # endif 152 # endif 153 #endif 154 155 #ifdef TOPS20 156 # define OS_CODE 0x0a 157 #endif 158 159 #ifdef WIN32 160 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 161 # define OS_CODE 0x0b 162 # endif 163 #endif 164 165 #ifdef __50SERIES /* Prime/PRIMOS */ 166 # define OS_CODE 0x0f 167 #endif 168 169 #if defined(_BEOS_) || defined(RISCOS) 170 # define fdopen(fd,mode) NULL /* No fdopen() */ 171 #endif 172 173 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 174 # if defined(_WIN32_WCE) 175 # define fdopen(fd,mode) NULL /* No fdopen() */ 176 # ifndef _PTRDIFF_T_DEFINED 177 typedef int ptrdiff_t; 178 # define _PTRDIFF_T_DEFINED 179 # endif 180 # else 181 # define fdopen(fd,type) _fdopen(fd,type) 182 # endif 183 #endif 184 185 #if defined(__BORLANDC__) && !defined(MSDOS) 186 #pragma warn -8004 187 #pragma warn -8008 188 #pragma warn -8066 189 #endif 190 191 /* provide prototypes for these when building zlib without LFS */ 192 #if !defined(_WIN32) && \ 193 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 194 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 195 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 196 #endif 197 198 /* common defaults */ 199 200 #ifndef OS_CODE 201 # define OS_CODE 0x03 /* assume Unix */ 202 #endif 203 204 #ifndef F_OPEN 205 # define F_OPEN(name, mode) fopen((name), (mode)) 206 #endif 207 208 /* functions */ 209 210 #if defined(pyr) || defined(Z_SOLO) 211 # define NO_MEMCPY 212 #endif 213 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 214 /* Use our own functions for small and medium model with MSC <= 5.0. 215 * You may have to use the same strategy for Borland C (untested). 216 * The __SC__ check is for Symantec. 217 */ 218 # define NO_MEMCPY 219 #endif 220 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 221 # define HAVE_MEMCPY 222 #endif 223 #if defined(_KERNEL) 224 # define zmemcpy memmove 225 # define zmemcmp memcmp 226 # define zmemzero bzero 227 #elif defined(BSD) 228 # define zmemcpy memcpy 229 # define zmemcmp memcmp 230 # define zmemzero bzero 231 #elif defined(__unix__) 232 # define zmemcpy memcpy 233 # define zmemcmp memcmp 234 # define zmemzero(d,l) memset((d), '\0', (l)) 235 #elif defined(HAVE_MEMCPY) 236 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 237 # define zmemcpy _fmemcpy 238 # define zmemcmp _fmemcmp 239 # define zmemzero(dest, len) _fmemset(dest, 0, len) 240 # else 241 # define zmemcpy memcpy 242 # define zmemcmp memcmp 243 # define zmemzero(dest, len) memset(dest, 0, len) 244 # endif 245 #else 246 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 247 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 248 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 249 #endif 250 251 /* Diagnostic functions */ 252 #if defined(DEBUG) && !defined(ZLIB_FREESTANDING) 253 # include <stdio.h> 254 extern int ZLIB_INTERNAL z_verbose; 255 extern void ZLIB_INTERNAL z_error OF((char *m)); 256 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 257 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 258 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 259 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 260 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 261 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 262 #else 263 # define Assert(cond,msg) 264 # define Trace(x) 265 # define Tracev(x) 266 # define Tracevv(x) 267 # define Tracec(c,x) 268 # define Tracecv(c,x) 269 #endif 270 271 #ifndef Z_SOLO 272 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 273 unsigned size)); 274 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 275 #endif 276 277 #define ZALLOC(strm, items, size) \ 278 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 279 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 280 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 281 282 /* Reverse the bytes in a 32-bit value */ 283 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 284 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 285 286 #if defined(ZLIB_NO_ADLERPUSH) || defined(ZLIB_NO_CRC32PUSH) 287 #define zADDRND(x) /* nothing */ 288 #elif defined(_STANDALONE) 289 #define zADDRND(x) /* nothing */ 290 #elif defined(_KERNEL) 291 #define zADDRND(x) rnd_lopool_addv(x) 292 #elif defined(arc4random_pushb_fast) 293 /* user-space, with new, faster functions */ 294 #define zADDRND(x) arc4random_pushb_fast(&x, sizeof(x)) 295 #else 296 /* user-space, old arc4random API which was too slow */ 297 #define zADDRND(x) /* nothing */ 298 #endif 299 300 #endif /* ZUTIL_H */ 301