xref: /openbmc/u-boot/lib/zlib/zutil.c (revision 13a39725)
1 /* zutil.c -- target dependent utility functions for the compression library
2  * Copyright (C) 1995-2005 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 
10 #ifndef NO_DUMMY_DECL
11 struct internal_state      {int dummy;}; /* for buggy compilers */
12 #endif
13 
14 const char * const z_errmsg[10] = {
15 "need dictionary",     /* Z_NEED_DICT       2  */
16 "stream end",          /* Z_STREAM_END      1  */
17 "",                    /* Z_OK              0  */
18 "file error",          /* Z_ERRNO         (-1) */
19 "stream error",        /* Z_STREAM_ERROR  (-2) */
20 "data error",          /* Z_DATA_ERROR    (-3) */
21 "insufficient memory", /* Z_MEM_ERROR     (-4) */
22 "buffer error",        /* Z_BUF_ERROR     (-5) */
23 "incompatible version",/* Z_VERSION_ERROR (-6) */
24 ""};
25 
26 #ifdef DEBUG
27 
28 #ifndef verbose
29 #define verbose 0
30 #endif
31 int z_verbose = verbose;
32 
z_error(m)33 void z_error (m)
34     char *m;
35 {
36 	fprintf(stderr, "%s\n", m);
37 	hang ();
38 }
39 #endif
40 
41 /* exported to allow conversion of error code to string for compress() and
42  * uncompress()
43  */
44 #ifndef MY_ZCALLOC /* Any system without a special alloc function */
45 
46 #ifdef __UBOOT__
47 #include <malloc.h>
48 #else
49 #ifndef STDC
50 extern voidp    malloc OF((uInt size));
51 extern voidp    calloc OF((uInt items, uInt size));
52 extern void     free   OF((voidpf ptr));
53 #endif
54 #endif
55 
zcalloc(voidpf opaque,unsigned items,unsigned size)56 voidpf zcalloc(voidpf opaque, unsigned items, unsigned size)
57 {
58 	if (opaque)
59 		items += size - size; /* make compiler happy */
60 	return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
61 		(voidpf)calloc(items, size);
62 }
63 
zcfree(voidpf opaque,voidpf ptr,unsigned nb)64 void  zcfree(voidpf opaque, voidpf ptr, unsigned nb)
65 {
66 	free(ptr);
67 	if (opaque)
68 		return; /* make compiler happy */
69 }
70 
71 #endif /* MY_ZCALLOC */
72