osx: disable app-nap during serial comm (#687)
[proxmark3-svn] / zlib / zutil.c
CommitLineData
add4d470 1/* zutil.c -- target dependent utility functions for the compression library
2 * Copyright (C) 1995-2005, 2010, 2011, 2012 Jean-loup Gailly.
3 * For conditions of distribution and use, see copyright notice in zlib.h
4 */
5
6/* @(#) $Id$ */
7
8#include "zutil.h"
9#ifndef Z_SOLO
10# include "gzguts.h"
11#endif
12
13#ifndef NO_DUMMY_DECL
14struct internal_state {int dummy;}; /* for buggy compilers */
15#endif
16
17z_const char * const z_errmsg[10] = {
18"need dictionary", /* Z_NEED_DICT 2 */
19"stream end", /* Z_STREAM_END 1 */
20"", /* Z_OK 0 */
21"file error", /* Z_ERRNO (-1) */
22"stream error", /* Z_STREAM_ERROR (-2) */
23"data error", /* Z_DATA_ERROR (-3) */
24"insufficient memory", /* Z_MEM_ERROR (-4) */
25"buffer error", /* Z_BUF_ERROR (-5) */
26"incompatible version",/* Z_VERSION_ERROR (-6) */
27""};
28
29
30const char * ZEXPORT zlibVersion()
31{
32 return ZLIB_VERSION;
33}
34
35uLong ZEXPORT zlibCompileFlags()
36{
37 uLong flags;
38
39 flags = 0;
40 switch ((int)(sizeof(uInt))) {
41 case 2: break;
42 case 4: flags += 1; break;
43 case 8: flags += 2; break;
44 default: flags += 3;
45 }
46 switch ((int)(sizeof(uLong))) {
47 case 2: break;
48 case 4: flags += 1 << 2; break;
49 case 8: flags += 2 << 2; break;
50 default: flags += 3 << 2;
51 }
52 switch ((int)(sizeof(voidpf))) {
53 case 2: break;
54 case 4: flags += 1 << 4; break;
55 case 8: flags += 2 << 4; break;
56 default: flags += 3 << 4;
57 }
58 switch ((int)(sizeof(z_off_t))) {
59 case 2: break;
60 case 4: flags += 1 << 6; break;
61 case 8: flags += 2 << 6; break;
62 default: flags += 3 << 6;
63 }
64#ifdef DEBUG
65 flags += 1 << 8;
66#endif
67#if defined(ASMV) || defined(ASMINF)
68 flags += 1 << 9;
69#endif
70#ifdef ZLIB_WINAPI
71 flags += 1 << 10;
72#endif
73#ifdef BUILDFIXED
74 flags += 1 << 12;
75#endif
76#ifdef DYNAMIC_CRC_TABLE
77 flags += 1 << 13;
78#endif
79#ifdef NO_GZCOMPRESS
80 flags += 1L << 16;
81#endif
82#ifdef NO_GZIP
83 flags += 1L << 17;
84#endif
85#ifdef PKZIP_BUG_WORKAROUND
86 flags += 1L << 20;
87#endif
88#ifdef FASTEST
89 flags += 1L << 21;
90#endif
91#if defined(STDC) || defined(Z_HAVE_STDARG_H)
92# ifdef NO_vsnprintf
93 flags += 1L << 25;
94# ifdef HAS_vsprintf_void
95 flags += 1L << 26;
96# endif
97# else
98# ifdef HAS_vsnprintf_void
99 flags += 1L << 26;
100# endif
101# endif
102#else
103 flags += 1L << 24;
104# ifdef NO_snprintf
105 flags += 1L << 25;
106# ifdef HAS_sprintf_void
107 flags += 1L << 26;
108# endif
109# else
110# ifdef HAS_snprintf_void
111 flags += 1L << 26;
112# endif
113# endif
114#endif
115 return flags;
116}
117
118#ifdef DEBUG
119
120# ifndef verbose
121# define verbose 0
122# endif
123int ZLIB_INTERNAL z_verbose = verbose;
124
125void ZLIB_INTERNAL z_error (m)
126 char *m;
127{
128 fprintf(stderr, "%s\n", m);
129 exit(1);
130}
131#endif
132
133/* exported to allow conversion of error code to string for compress() and
134 * uncompress()
135 */
136const char * ZEXPORT zError(err)
137 int err;
138{
139 return ERR_MSG(err);
140}
141
142#if defined(_WIN32_WCE)
143 /* The Microsoft C Run-Time Library for Windows CE doesn't have
144 * errno. We define it as a global variable to simplify porting.
145 * Its value is always 0 and should not be used.
146 */
147 int errno = 0;
148#endif
149
150#ifndef HAVE_MEMCPY
151
152void ZLIB_INTERNAL zmemcpy(dest, source, len)
153 Bytef* dest;
154 const Bytef* source;
155 uInt len;
156{
157 if (len == 0) return;
158 do {
159 *dest++ = *source++; /* ??? to be unrolled */
160 } while (--len != 0);
161}
162
163int ZLIB_INTERNAL zmemcmp(s1, s2, len)
164 const Bytef* s1;
165 const Bytef* s2;
166 uInt len;
167{
168 uInt j;
169
170 for (j = 0; j < len; j++) {
171 if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
172 }
173 return 0;
174}
175
176void ZLIB_INTERNAL zmemzero(dest, len)
177 Bytef* dest;
178 uInt len;
179{
180 if (len == 0) return;
181 do {
182 *dest++ = 0; /* ??? to be unrolled */
183 } while (--len != 0);
184}
185#endif
186
187#ifndef Z_SOLO
188
189#ifdef SYS16BIT
190
191#ifdef __TURBOC__
192/* Turbo C in 16-bit mode */
193
194# define MY_ZCALLOC
195
196/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
197 * and farmalloc(64K) returns a pointer with an offset of 8, so we
198 * must fix the pointer. Warning: the pointer must be put back to its
199 * original form in order to free it, use zcfree().
200 */
201
202#define MAX_PTR 10
203/* 10*64K = 640K */
204
205local int next_ptr = 0;
206
207typedef struct ptr_table_s {
208 voidpf org_ptr;
209 voidpf new_ptr;
210} ptr_table;
211
212local ptr_table table[MAX_PTR];
213/* This table is used to remember the original form of pointers
214 * to large buffers (64K). Such pointers are normalized with a zero offset.
215 * Since MSDOS is not a preemptive multitasking OS, this table is not
216 * protected from concurrent access. This hack doesn't work anyway on
217 * a protected system like OS/2. Use Microsoft C instead.
218 */
219
220voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
221{
222 voidpf buf = opaque; /* just to make some compilers happy */
223 ulg bsize = (ulg)items*size;
224
225 /* If we allocate less than 65520 bytes, we assume that farmalloc
226 * will return a usable pointer which doesn't have to be normalized.
227 */
228 if (bsize < 65520L) {
229 buf = farmalloc(bsize);
230 if (*(ush*)&buf != 0) return buf;
231 } else {
232 buf = farmalloc(bsize + 16L);
233 }
234 if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
235 table[next_ptr].org_ptr = buf;
236
237 /* Normalize the pointer to seg:0 */
238 *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
239 *(ush*)&buf = 0;
240 table[next_ptr++].new_ptr = buf;
241 return buf;
242}
243
244void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
245{
246 int n;
247 if (*(ush*)&ptr != 0) { /* object < 64K */
248 farfree(ptr);
249 return;
250 }
251 /* Find the original pointer */
252 for (n = 0; n < next_ptr; n++) {
253 if (ptr != table[n].new_ptr) continue;
254
255 farfree(table[n].org_ptr);
256 while (++n < next_ptr) {
257 table[n-1] = table[n];
258 }
259 next_ptr--;
260 return;
261 }
262 ptr = opaque; /* just to make some compilers happy */
263 Assert(0, "zcfree: ptr not found");
264}
265
266#endif /* __TURBOC__ */
267
268
269#ifdef M_I86
270/* Microsoft C in 16-bit mode */
271
272# define MY_ZCALLOC
273
274#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
275# define _halloc halloc
276# define _hfree hfree
277#endif
278
279voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
280{
281 if (opaque) opaque = 0; /* to make compiler happy */
282 return _halloc((long)items, size);
283}
284
285void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
286{
287 if (opaque) opaque = 0; /* to make compiler happy */
288 _hfree(ptr);
289}
290
291#endif /* M_I86 */
292
293#endif /* SYS16BIT */
294
295
296#ifndef MY_ZCALLOC /* Any system without a special alloc function */
297
298#ifndef STDC
299extern voidp malloc OF((uInt size));
300extern voidp calloc OF((uInt items, uInt size));
301extern void free OF((voidpf ptr));
302#endif
303
304voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
305 voidpf opaque;
306 unsigned items;
307 unsigned size;
308{
309 if (opaque) items += size - size; /* make compiler happy */
310 return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
311 (voidpf)calloc(items, size);
312}
313
314void ZLIB_INTERNAL zcfree (opaque, ptr)
315 voidpf opaque;
316 voidpf ptr;
317{
318 free(ptr);
319 if (opaque) return; /* make compiler happy */
320}
321
322#endif /* MY_ZCALLOC */
323
324#endif /* !Z_SOLO */
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