215 lines
6.1 KiB
C
215 lines
6.1 KiB
C
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/* $Header: /usr/people/sam/tiff/libtiff/RCS/tiffcomp.h,v 1.49 1996/04/29 21:56:21 sam Rel $ */
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/*
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* Copyright (c) 1990-1996 Sam Leffler
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* Copyright (c) 1991-1996 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifndef _COMPAT_
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#define _COMPAT_
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/*
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* This file contains a hodgepodge of definitions and
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* declarations that are needed to provide compatibility
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* between the native system and the base implementation
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* that the library assumes.
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*
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* NB: This file is a mess.
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*/
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/*
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* Setup basic type definitions and function declaratations.
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*/
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/*
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* Simplify Acorn RISC OS identifier (to avoid confusion with Acorn RISC iX
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* and with defunct Unix Risc OS)
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* No need to specify __arm - hey, Acorn might port the OS, no problem here!
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*/
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#ifdef __acornriscos
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#undef __acornriscos
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#endif
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#if defined(__acorn) && defined(__riscos)
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#define __acornriscos
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#endif
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#if defined(__MWERKS__) || defined(THINK_C)
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#include <unix.h>
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#include <math.h>
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#endif
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#include <stdio.h>
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#if defined(__PPCC__) || defined(__SC__) || defined(__MRC__)
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#include <types.h>
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#elif !defined(__MWERKS__) && !defined(THINK_C) && !defined(__acornriscos) && !defined(applec)
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#include <sys/types.h>
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#endif
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#if defined(VMS)
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#include <file.h>
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#include <unixio.h>
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#elif !defined(__acornriscos)
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#include <fcntl.h>
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#endif
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/*
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* This maze of checks controls defines or not the
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* target system has BSD-style typdedefs declared in
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* an include file and/or whether or not to include
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* <unistd.h> to get the SEEK_* definitions. Some
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* additional includes are also done to pull in the
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* appropriate definitions we're looking for.
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*/
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#if defined(__MWERKS__) || defined(THINK_C) || defined(__PPCC__) || defined(__SC__) || defined(__MRC__)
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#include <stdlib.h>
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#define BSDTYPES
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#define HAVE_UNISTD_H 0
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#elif defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
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#define BSDTYPES
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#elif defined(OS2_16) || defined(OS2_32)
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#define BSDTYPES
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#elif defined(__acornriscos)
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#include <stdlib.h>
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#define BSDTYPES
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#define HAVE_UNISTD_H 0
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#elif defined(VMS)
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#define HAVE_UNISTD_H 0
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#else
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#define HAVE_UNISTD_H 1
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#endif
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/*
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* The library uses the ANSI C/POSIX SEEK_*
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* definitions that should be defined in unistd.h
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* (except on system where they are in stdio.h and
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* there is no unistd.h).
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*/
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#if !defined(SEEK_SET) && HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/*
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* The library uses memset, memcpy, and memcmp.
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* ANSI C and System V define these in string.h.
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*/
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#include <string.h>
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/*
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* The BSD typedefs are used throughout the library.
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* If your system doesn't have them in <sys/types.h>,
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* then define BSDTYPES in your Makefile.
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*/
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#if defined(BSDTYPES)
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typedef unsigned char u_char;
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typedef unsigned short u_short;
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typedef unsigned int u_int;
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typedef unsigned long u_long;
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#endif
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/*
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* dblparam_t is the type that a double precision
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* floating point value will have on the parameter
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* stack (when coerced by the compiler).
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*/
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/* Note: on MacPowerPC "extended" is undefined. So only use it for 68K-Macs */
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#if defined(__SC__) || defined(THINK_C)
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typedef extended dblparam_t;
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#else
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typedef double dblparam_t;
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#endif
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/*
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* If your compiler supports inline functions, then
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* set INLINE appropriately to get the known hotspots
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* in the library expanded inline.
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*/
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#if defined(__GNUC__)
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#if defined(__STRICT_ANSI__)
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#define INLINE __inline__
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#else
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#define INLINE inline
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#endif
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#else /* !__GNUC__ */
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#define INLINE
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#endif
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/*
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* GLOBALDATA is a macro that is used to define global variables
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* private to the library. We use this indirection to hide
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* brain-damage in VAXC (and GCC) under VAX/VMS. In these
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* environments the macro places the variable in a non-shareable
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* program section, which ought to be done by default (sigh!)
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*
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* Apparently DEC are aware of the problem as this behaviour is the
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* default under VMS on AXP.
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*
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* The GNU C variant is untested.
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*/
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#if defined(VAX) && defined(VMS)
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#if defined(VAXC)
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#define GLOBALDATA(TYPE,NAME) extern noshare TYPE NAME
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#endif
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#if defined(__GNUC__)
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#define GLOBALDATA(TYPE,NAME) extern TYPE NAME \
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asm("_$$PsectAttributes_NOSHR$$" #NAME)
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#endif
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#else /* !VAX/VMS */
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#define GLOBALDATA(TYPE,NAME) extern TYPE NAME
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#endif
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#if defined(__acornriscos)
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/*
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* osfcn.h is part of C++Lib on Acorn C/C++, and as such can't be used
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* on C alone. For that reason, the relevant functions are
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* implemented in tif_acorn.c, and the elements from the header
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* file are included here.
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*/
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#if defined(__cplusplus)
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#include <osfcn.h>
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#else
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#define O_RDONLY 0
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#define O_WRONLY 1
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#define O_RDWR 2
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#define O_APPEND 8
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#define O_CREAT 0x200
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#define O_TRUNC 0x400
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typedef long off_t;
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extern int open(const char *name, int flags, int mode);
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extern int close(int fd);
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extern int write(int fd, const char *buf, int nbytes);
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extern int read(int fd, char *buf, int nbytes);
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extern off_t lseek(int fd, off_t offset, int whence);
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extern int creat(const char *path, int mode);
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#endif /* __cplusplus */
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#endif /* __acornriscos */
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/* Bit and byte order, the default is MSB to LSB */
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#ifdef VMS
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#undef HOST_FILLORDER
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#undef HOST_BIGENDIAN
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#define HOST_FILLORDER FILLORDER_LSB2MSB
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#define HOST_BIGENDIAN 0
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#endif
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#endif /* _COMPAT_ */
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