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1 /* $Header$ */
2
3 /*
4 * Copyright (c) 1990-1997 Sam Leffler
5 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
6 *
7 * Permission to use, copy, modify, distribute, and sell this software and
8 * its documentation for any purpose is hereby granted without fee, provided
9 * that (i) the above copyright notices and this permission notice appear in
10 * all copies of the software and related documentation, and (ii) the names of
11 * Sam Leffler and Silicon Graphics may not be used in any advertising or
12 * publicity relating to the software without the specific, prior written
13 * permission of Sam Leffler and Silicon Graphics.
14 *
15 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
17 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
18 *
19 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
20 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
21 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
22 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
23 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 */
26
27 #ifndef _COMPAT_
28 #define _COMPAT_
29 /*
30 * This file contains a hodgepodge of definitions and
31 * declarations that are needed to provide compatibility
32 * between the native system and the base implementation
33 * that the library assumes.
34 *
35 * NB: This file is a mess.
36 */
37
38 /*
39 * Setup basic type definitions and function declaratations.
40 */
41
42 /*
43 * Simplify Acorn RISC OS identifier (to avoid confusion with Acorn RISC iX
44 * and with defunct Unix Risc OS)
45 * No need to specify __arm - hey, Acorn might port the OS, no problem here!
46 */
47 #ifdef __acornriscos
48 #undef __acornriscos
49 #endif
50 #if defined(__acorn) && defined(__riscos)
51 #define __acornriscos
52 #endif
53
54 #if (defined(__MWERKS__) && !defined(__MACH__)) || defined(THINK_C)
55 #include <unix.h>
56 #include <math.h>
57 #endif
58
59 #include <stdio.h>
60
61 #if defined(__PPCC__) || ( defined(__SC__) && !defined(__DMC__) ) || defined(__MRC__)
62 #include <types.h>
63 #elif !defined(__MWERKS__) && !defined(THINK_C) && !defined(__acornriscos) && !defined(applec)
64 #include <sys/types.h>
65 #endif
66
67 #if defined(VMS)
68 #include <file.h>
69 #include <unixio.h>
70 #elif !defined(__acornriscos)
71 #include <fcntl.h>
72 #endif
73
74 /*
75 * This maze of checks controls defines or not the
76 * target system has BSD-style typdedefs declared in
77 * an include file and/or whether or not to include
78 * <unistd.h> to get the SEEK_* definitions. Some
79 * additional includes are also done to pull in the
80 * appropriate definitions we're looking for.
81 */
82 #if defined(__MWERKS__) || defined(THINK_C) || defined(__PPCC__) || ( defined(__SC__) && !defined(__DMC__) ) || defined(__MRC__)
83 #include <stdlib.h>
84 #define BSDTYPES
85 #define HAVE_UNISTD_H 0
86 #elif (defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows) || defined(_WIN32)) && !defined(unix)
87 #define BSDTYPES
88 #elif defined(OS2_16) || defined(OS2_32)
89 #define BSDTYPES
90 #elif defined(__MSDOS__)
91 #define BSDTYPES
92 #elif defined(__acornriscos)
93 #include <stdlib.h>
94 #define BSDTYPES
95 #define HAVE_UNISTD_H 0
96 #elif defined(VMS)
97 #define HAVE_UNISTD_H 0
98 #else
99 #define HAVE_UNISTD_H 1
100 #endif
101
102 /*
103 * The library uses the ANSI C/POSIX SEEK_*
104 * definitions that should be defined in unistd.h
105 * (except on system where they are in stdio.h and
106 * there is no unistd.h).
107 */
108 #if !defined(SEEK_SET) && HAVE_UNISTD_H
109 #include <unistd.h>
110 #endif
111
112 /*
113 * The library uses memset, memcpy, and memcmp.
114 * ANSI C and System V define these in string.h.
115 */
116 #include <string.h>
117
118 /*
119 * The BSD typedefs are used throughout the library.
120 * If your system doesn't have them in <sys/types.h>,
121 * then define BSDTYPES in your Makefile.
122 */
123 #if defined(BSDTYPES)
124 # ifndef _BSDTYPES_DEFINED
125 # ifndef __u_char_defined
126 typedef unsigned char u_char;
127 typedef unsigned short u_short;
128 typedef unsigned int u_int;
129 typedef unsigned long u_long;
130 # define __u_char_defined
131 # endif /* __u_char_defined */
132 # define _BSDTYPES_DEFINED
133 # endif /* _BSDTYPES_DEFINED */
134 #endif /* BSDTYPES */
135
136 /*
137 * dblparam_t is the type that a double precision
138 * floating point value will have on the parameter
139 * stack (when coerced by the compiler).
140 */
141 /* Note: on MacPowerPC "extended" is undefined. So only use it for 68K-Macs */
142 #if ( defined(__SC__) && !defined(__DMC__) ) || defined(THINK_C)
143 typedef extended dblparam_t;
144 #else
145 typedef double dblparam_t;
146 #endif
147
148 /*
149 * If your compiler supports inline functions, then
150 * set INLINE appropriately to get the known hotspots
151 * in the library expanded inline.
152 */
153 #if defined(__GNUC__)
154 #if defined(__STRICT_ANSI__)
155 #define INLINE __inline__
156 #else
157 #define INLINE inline
158 #endif
159 #else /* !__GNUC__ */
160 #define INLINE
161 #endif
162
163 /*
164 * GLOBALDATA is a macro that is used to define global variables
165 * private to the library. We use this indirection to hide
166 * brain-damage in VAXC (and GCC) under VAX/VMS. In these
167 * environments the macro places the variable in a non-shareable
168 * program section, which ought to be done by default (sigh!)
169 *
170 * Apparently DEC are aware of the problem as this behaviour is the
171 * default under VMS on AXP.
172 *
173 * The GNU C variant is untested.
174 */
175 #if defined(VAX) && defined(VMS)
176 #if defined(VAXC)
177 #define GLOBALDATA(TYPE,NAME) extern noshare TYPE NAME
178 #endif
179 #if defined(__GNUC__)
180 #define GLOBALDATA(TYPE,NAME) extern TYPE NAME \
181 asm("_$$PsectAttributes_NOSHR$$" #NAME)
182 #endif
183 #else /* !VAX/VMS */
184 #define GLOBALDATA(TYPE,NAME) extern TYPE NAME
185 #endif
186
187 #if defined(__acornriscos)
188 /*
189 * osfcn.h is part of C++Lib on Acorn C/C++, and as such can't be used
190 * on C alone. For that reason, the relevant functions are
191 * implemented in tif_acorn.c, and the elements from the header
192 * file are included here.
193 */
194 #if defined(__cplusplus)
195 #include <osfcn.h>
196 #else
197 #define O_RDONLY 0
198 #define O_WRONLY 1
199 #define O_RDWR 2
200 #define O_APPEND 8
201 #define O_CREAT 0x200
202 #define O_TRUNC 0x400
203 typedef long off_t;
204 extern int open(const char *name, int flags, int mode);
205 extern int close(int fd);
206 extern int write(int fd, const char *buf, int nbytes);
207 extern int read(int fd, char *buf, int nbytes);
208 extern off_t lseek(int fd, off_t offset, int whence);
209 extern int creat(const char *path, int mode);
210 #endif /* __cplusplus */
211 #endif /* __acornriscos */
212
213 /* Bit and byte order, the default is MSB to LSB */
214 #ifdef VMS
215 #undef HOST_FILLORDER
216 #undef HOST_BIGENDIAN
217 #define HOST_FILLORDER FILLORDER_LSB2MSB
218 #define HOST_BIGENDIAN 0
219 #endif
220
221 #ifndef LINKAGEMODE
222 #define LINKAGEMODE
223 #endif
224
225 #endif /* _COMPAT_ */