/*


 Copyright (C) 1990 Texas Instruments Incorporated.

 Permission is granted to any individual or institution to use, copy, modify,
 and distribute this software, provided that this complete copyright and
 permission notice is maintained, intact, in all copies and supporting
 documentation.

 Texas Instruments Incorporated provides this software "as is" without
 express or implied warranty.


 *		   S y s t e m   D e p e n d e n t
 *		D e f i n i t i o n s    f o r   C P P
 *
 * Definitions in this file may be edited to configure CPP for particular
 * host operating systems and target configurations.
 *
 * NOTE: cpp assumes it is compiled by a compiler that supports macros
 * with arguments.  If this is not the case (as for Decus C), #define
 * nomacarg -- and provide function equivalents for all macros.
 *
 * cpp also assumes the host and target implement the Ascii character set.
 * If this is not the case, you will have to do some editing here and there.
 *
 *  Change History
 *  19-Jan-90	DKM	Support for MVS and EBCDIC character set
 *  04-May-90	MJF	Added predefined constant "sun"
 *  16-Jun-91	GPD	Fixed predefines for sun, pyr and i386 architectures
 */

#ifndef CPPDEFH
#define CPPDEFH

#ifdef EMACS

/* Use the Emacs config file to find out what type of machine */

#define NO_SHORTNAMES
#include "../src/config.h"

/* Convert Emacs's conventions for BIG_ENDIAN to cpp's convention.  */
#ifdef BIG_ENDIAN
#undef BIG_ENDIAN
#define BIG_ENDIAN TRUE
#else /* not BIG_ENDIAN */
#define BIG_ENDIAN FALSE
#endif /* BIG_ENDIAN */

/* Emacs uses the names index and rindex and defines them as str(r)chr if nec;
   cpp uses the opposite convention.  Here we flush the macro definitions for
   Emacs and add the ones cpp wants.  */

#ifdef index
#undef index
#undef rindex
#else /* index is not defined as a macro */
#define strchr index
#define strrchr rindex
#endif /* index is not defined as a macro */

#define NBUFF 2048
#define NWORK 2048

#endif /* EMACS */

/*
 * This redundant definition of TRUE and FALSE works around
 * a limitation of Decus C.
 */
#ifndef	TRUE
#define	TRUE			1
#define	FALSE			0
#endif

/*
 * Define the HOST operating system.  This is needed so that
 * cpp can use appropriate filename conventions.
 */
#define	SYS_UNKNOWN		0
#define	SYS_UNIX		1
#define	SYS_VMS			2
#define	SYS_RSX			3
#define	SYS_RT11		4
#define	SYS_LATTICE		5
#define	SYS_ONYX		6
#define	SYS_68000		7
#define	SYS_OS2 		8
#define	SYS_XENIX 		9
#define SYS_MVS                 10
#define SYS_AIX                 11

/* Both ASCII and EBCDIC machines are supported  */
#define ASCII                   1
#define EBCDIC                  2

#ifndef	HOST
#ifdef	unix
#define	HOST			SYS_UNIX
#else
#ifdef	vms
#define	HOST			SYS_VMS
#else
#ifdef	rsx
#define	HOST			SYS_RSX
#else
#ifdef	rt11
#define	HOST			SYS_RT11
#else
#if defined(DOS) || defined(MSDOS)
#define	HOST			SYS_OS2
#else
#ifdef	M_XENIX
#define	HOST			SYS_XENIX
#else
#ifdef	SYS_OSVS
#define	HOST			SYS_MVS
#else
#if defined(_AIX)
#define	HOST			SYS_AIX
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif

#ifndef	HOST
#define	HOST			SYS_UNKNOWN
#endif

/*
 * We assume that the target is the same as the host system
 */
#ifndef	TARGET
#define	TARGET			HOST
#endif

/*
 * In order to predefine machine-dependent constants,
 * several strings are defined here:
 *
 * MACHINE	defines the target cpu (by name)
 * SYSTEM	defines the target operating system
 * COMPILER	defines the target compiler
 * CHARSET      character set used, ASCII or EBCDIC (defaults ASCII).
 *
 *	The above may be #defined as "" if they are not wanted.
 *	They should not be #defined as NULL.
 *
 * LINE_PREFIX	defines the # output line prefix, if not "line"
 *		This should be defined as "" if cpp is to replace
 *		the "standard" C pre-processor.
 *
 * FILE_LOCAL	marks functions which are referenced only in the
 *		file they reside.  Some C compilers allow these
 *		to be marked "static" even though they are referenced
 *		by "extern" statements elsewhere.
 *
 * OK_DOLLAR	Should be set TRUE if $ is a valid alphabetic character
 *		in identifiers (default), or zero if $ is invalid.
 *		Default is TRUE.
 *
 * OK_CONCAT	Should be set TRUE if ## may be used to concatenate
 *		tokens in macros (per the Ansi Draft Standard) or
 *		FALSE for old-style # processing (needed if cpp is
 *		to process assembler source code).
 *
 * OK_DATE	Predefines the compilation date if set TRUE.
 *		Not permitted by the Nov. 12, 1984 Draft Standard.
 *
 * S_CHAR etc.	Define the sizeof the basic TARGET machine word types.
 *		By default, sizes are set to the values for the HOST
 *		computer.  If this is inappropriate, see the code in
 *		cpp3.c for details on what to change.  Also, if you
 *		have a machine where sizeof (signed int) differs from
 *		sizeof (unsigned int), you will have to edit code and
 *		tables in cpp3.c (and extend the -S option definition.)
 *
 * CPP_LIBRARY	May be defined if you have a site-specific include directory
 *		which is to be searched *before* the operating-system
 *		specific directories.
 */

#if TARGET == SYS_LATTICE
/*
 * We assume the operating system is pcdos for the IBM-PC.
 * We also assume the small model (just like the PDP-11)
 */
#define MACHINE			"i8086"
#define	SYSTEM			"pcdos"
#endif

#if TARGET == SYS_ONYX
#define	MACHINE			"z8000"
#define	SYSTEM			"unix"
#endif

#if TARGET == SYS_VMS
#define	MACHINE			"vax"
#define	SYSTEM			"vms"
#define	COMPILER		"vax11c"
#endif

#if TARGET == SYS_RSX
#define	MACHINE			"pdp11"
#define	SYSTEM			"rsx"
#define	COMPILER		"decus"
#endif

#if TARGET == SYS_RT11
#define	MACHINE			"pdp11"
#define	SYSTEM			"rt11"
#define	COMPILER		"decus"
#endif

#if TARGET == SYS_XENIX
#define	MACHINE			"I80386"
#define	SYSTEM			"M_XENIX"
#define	COMPILER		"XENIXC"
#endif

#if TARGET == SYS_OS2
#define	MACHINE			"I80386"
#define	SYSTEM			"DOS"
#define	COMPILER		"IBMC2"
#endif

#if TARGET == SYS_MVS
#define	MACHINE			"IBM370"
#define	SYSTEM			"MVS"
#define	COMPILER		"SAS/C"
#define CHARSET                 EBCDIC
#endif

#if TARGET == SYS_AIX
#define	MACHINE			"RS6000"
#define	SYSTEM			"AIX"
#define	COMPILER		"IBMCC"
#endif

#if TARGET == SYS_68000
/*
 * All three machine designators have been seen in various systems.
 * Warning -- compilers differ as to sizeof (int).  cpp3 assumes that
 * sizeof (int) == 2
 */
#define	MACHINE			"M68000", "m68000", "m68k"
#define	SYSTEM			"unix"
#endif

#if	TARGET == SYS_UNIX
#define	SYSTEM			"unix"
#ifdef	pdp11
#define	MACHINE			"pdp11"
#endif
#ifdef	vax
#define	MACHINE			"vax"
#endif
#ifdef  sparc
#define MACHINE                 "sparc"
#endif
#ifdef  mc68020
#define MACHINE                 "mc68020", "mc68000"
#endif
#ifdef  sun
#define TARGET_ARCH             "sun"
#endif
#ifdef  pyr
#define MACHINE                 "pyr"
#endif
#ifdef  i386
#define MACHINE                 "i386"
#endif
#endif

/*
 * defaults
 */

#ifndef CHARSET
#define CHARSET                 ASCII
#endif

#ifndef MSG_PREFIX
#define MSG_PREFIX		"cpp: "
#endif

#ifndef LINE_PREFIX
#ifdef	decus
#define	LINE_PREFIX		""
#else
#define LINE_PREFIX		"line"
#endif
#endif

/* create a string that can be shoved on the preset symbols list
 * so programs running this cpp can test for ASCII or EBCDIC too.
 */
#if CHARSET == EBCDIC
#define CH_SET                  "EBCDIC"
#else
#define CH_SET                  "ASCII"
#endif


/*
 * OLD_PREPROCESSOR forces the definition of OK_DOLLAR, OK_CONCAT,
 * COMMENT_INVISIBLE, and STRING_FORMAL to values appropriate for
 * an old-style preprocessor.
 */

#if	OLD_PREPROCESSOR
#define	OK_DOLLAR		FALSE
#define	OK_CONCAT		FALSE
#define	COMMENT_INVISIBLE	TRUE
#define	STRING_FORMAL		TRUE
#endif

/*
 * RECURSION_LIMIT may be set to -1 to disable the macro recursion test.
 */
#ifndef	RECURSION_LIMIT
#define	RECURSION_LIMIT	1000
#endif

/*
 * BITS_CHAR may be defined to set the number of bits per character.
 * it is needed only for multi-byte character constants.
 */
#ifndef	BITS_CHAR
#define	BITS_CHAR		8
#endif

/*
 * BIG_ENDIAN is set TRUE on machines (such as the IBM 360 series)
 * where 'ab' stores 'a' in the high-bits and 'b' in the low-bits.
 * It is set FALSE on machines (such as the PDP-11 and Vax-11)
 * where 'ab' stores 'a' in the low-bits and 'b' in the high-bits.
 * (Or is it the other way around?) -- Warning: BIG_ENDIAN code is untested.
 */
#ifndef	BIG_ENDIAN
#if (HOST == SYS_MVS) || defined(i386)
#define BIG_ENDIAN              TRUE      /* Is this right??? */
#else
#define	BIG_ENDIAN 		FALSE
#endif
#endif

/*
 * COMMENT_INVISIBLE may be defined to allow "old-style" comment
 * processing, whereby the comment becomes a zero-length token
 * delimiter.  This permitted tokens to be concatenated in macro
 * expansions.  This was removed from the Draft Ansi Standard.
 */
#ifndef	COMMENT_INVISIBLE
#define	COMMENT_INVISIBLE	FALSE
#endif

/*
 * STRING_FORMAL may be defined to allow recognition of macro parameters
 * anywhere in replacement strings.  This was removed from the Draft Ansi
 * Standard and a limited recognition capability added.
 */
#ifndef	STRING_FORMAL
#define	STRING_FORMAL		FALSE
#endif

/*
 * OK_DOLLAR enables use of $ as a valid "letter" in identifiers.
 * This is a permitted extension to the Ansi Standard and is required
 * for e.g., VMS, RSX-11M, etc.   It should be set FALSE if cpp is
 * used to preprocess assembler source on Unix systems.  OLD_PREPROCESSOR
 * sets OK_DOLLAR FALSE for that reason.
 */
#ifndef	OK_DOLLAR
#define	OK_DOLLAR		TRUE
#endif

/*
 * OK_CONCAT enables (one possible implementation of) token concatenation.
 * If cpp is used to preprocess Unix assembler source, this should be
 * set FALSE as the concatenation character, #, is used by the assembler.
 */
#ifndef	OK_CONCAT
#define	OK_CONCAT		TRUE
#endif

/*
 * OK_DATE may be enabled to predefine today's date as a string
 * at the start of each compilation.  This is apparently not permitted
 * by the Draft Ansi Standard.
 */
#ifndef	OK_DATE
#define	OK_DATE		TRUE
#endif

/*
 * Some common definitions.
 */

#ifndef	DEBUG
#define	DEBUG			FALSE
#endif

/*
 * The following definitions are used to allocate memory for
 * work buffers.  In general, they should not be modified
 * by implementors.
 *
 * PAR_MAC	The maximum number of #define parameters (31 per Standard)
 *		Note: we need another one for strings.
 * NBUFF	Input buffer size
 * NWORK	Work buffer size -- the longest macro
 *		must fit here after expansion.
 * NEXP		The nesting depth of #if expressions
 * NINCLUDE	The number of directories that may be specified
 *		on a per-system basis, or by the -I option.
 * BLK_NEST	The number of nested #if's permitted.
 */

#ifndef PAR_MAC
#define	PAR_MAC		   (31 + 1)
#endif

#ifndef NBUFF
#define	NBUFF			512
#endif

#ifndef NWORK
#define	NWORK			4096
#endif

#ifndef NEXP
#define	NEXP			128
#endif

#ifndef NINCLUDE
#define	NINCLUDE		16
#endif

#ifndef NPARMWORK
#define	NPARMWORK		(NBUFF * 2)
#endif

#ifndef BLK_NEST
#define	BLK_NEST		32
#endif


/*
 * Some special constants.  These may need to be changed if cpp
 * is ported to a wierd machine.
 *
 * NOTE: if cpp is run on a non-ascii machine, ALERT and VT may
 * need to be changed.  They are used to implement the proposed
 * ANSI standard C control characters '\a' and '\v' only.
 * DEL is used to tag macro tokens to prevent #define foo foo
 * from looping.  Note that we don't try to prevent more elaborate
 * #define loops from occurring.
 */

#ifndef	ALERT
# if CHARSET == EBCDIC
#    define ALERT                   '\057'      /* EBCDIC '\a' Bell */
# else
#    define ALERT		    '\007'	/* ASCII  '\a' Bell */
#endif
#endif

#ifndef	VT
#define	VT			'\013'		/* Vertical Tab CTRL/K	*/
#endif


#ifndef	FILE_LOCAL
#ifdef	decus
#define	FILE_LOCAL		static
#else
#ifdef	vax11c
#define	FILE_LOCAL		static
#else
#define	FILE_LOCAL				/* Others are global	*/
#endif
#endif
#endif

#endif

