rsc/source/rscpp/cppdef.h

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   9  * $RCSfile: cppdef.h,v $
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  30
  31 /*
  32  * This redundant definition of TRUE and FALSE works around
  33  * a limitation of Decus C.
  34  */
  35 #ifndef TRUE
  36 #define TRUE                    1
  37 #define FALSE                   0
  38 #endif
  39
  40 /*
  41  * Define the HOST operating system.  This is needed so that
  42  * cpp can use appropriate filename conventions.
  43  */
  44 #define SYS_UNKNOWN             0
  45 #define SYS_UNIX                1
  46 #define SYS_VMS                 2
  47 #define SYS_RSX                 3
  48 #define SYS_RT11                4
  49 #define SYS_LATTICE             5
  50 #define SYS_ONYX                6
  51 #define SYS_68000               7
  52
  53 #ifndef HOST
  54 #ifdef  unix
  55 #define HOST                    SYS_UNIX
  56 #else
  57 #ifdef  vms
  58 #define HOST                    SYS_VMS
  59 #else
  60 #ifdef  rsx
  61 #define HOST                    SYS_RSX
  62 #else
  63 #ifdef  rt11
  64 #define HOST                    SYS_RT11
  65 #endif
  66 #endif
  67 #endif
  68 #endif
  69 #endif
  70
  71 #ifndef HOST
  72 #define HOST                    SYS_UNKNOWN
  73 #endif
  74
  75 /*
  76  * We assume that the target is the same as the host system
  77  */
  78 #ifndef TARGET
  79 #define TARGET                  HOST
  80 #endif
  81
  82 /*
  83  * In order to predefine machine-dependent constants,
  84  * several strings are defined here:
  85  *
  86  * MACHINE      defines the target cpu (by name)
  87  * SYSTEM       defines the target operating system
  88  * COMPILER     defines the target compiler
  89  *
  90  *      The above may be #defined as "" if they are not wanted.
  91  *      They should not be #defined as NULL.
  92  *
  93  * LINE_PREFIX  defines the # output line prefix, if not "line"
  94  *              This should be defined as "" if cpp is to replace
  95  *              the "standard" C pre-processor.
  96  *
  97  * FILE_LOCAL   marks functions which are referenced only in the
  98  *              file they reside.  Some C compilers allow these
  99  *              to be marked "static" even though they are referenced
 100  *              by "extern" statements elsewhere.
 101  *
 102  * OK_DOLLAR    Should be set TRUE if $ is a valid alphabetic character
 103  *              in identifiers (default), or zero if $ is invalid.
 104  *              Default is TRUE.
 105  *
 106  * OK_CONCAT    Should be set TRUE if # may be used to concatenate
 107  *              tokens in macros (per the Ansi Draft Standard) or
 108  *              FALSE for old-style # processing (needed if cpp is
 109  *              to process assembler source code).
 110  *
 111  * OK_DATE      Predefines the compilation date if set TRUE.
 112  *              Not permitted by the Nov. 12, 1984 Draft Standard.
 113  *
 114  * S_CHAR etc.  Define the sizeof the basic TARGET machine word types.
 115  *              By default, sizes are set to the values for the HOST
 116  *              computer.  If this is inappropriate, see the code in
 117  *              cpp3.c for details on what to change.  Also, if you
 118  *              have a machine where sizeof (signed int) differs from
 119  *              sizeof (unsigned int), you will have to edit code and
 120  *              tables in cpp3.c (and extend the -S option definition.)
 121  *
 122  * CPP_LIBRARY  May be defined if you have a site-specific include directory
 123  *              which is to be searched *before* the operating-system
 124  *              specific directories.
 125  */
 126
 127 #if TARGET == SYS_LATTICE
 128 /*
 129  * We assume the operating system is pcdos for the IBM-PC.
 130  * We also assume the small model (just like the PDP-11)
 131  */
 132 #define MACHINE                 "i8086"
 133 #define SYSTEM                  "pcdos"
 134 #endif
 135
 136 #if TARGET == SYS_ONYX
 137 #define MACHINE                 "z8000"
 138 #define SYSTEM                  "unix"
 139 #endif
 140
 141 #if TARGET == SYS_VMS
 142 #define MACHINE                 "vax"
 143 #define SYSTEM                  "vms"
 144 #define COMPILER                "vax11c"
 145 #endif
 146
 147 #if TARGET == SYS_RSX
 148 #define MACHINE                 "pdp11"
 149 #define SYSTEM                  "rsx"
 150 #define COMPILER                "decus"
 151 #endif
 152
 153 #if TARGET == SYS_RT11
 154 #define MACHINE                 "pdp11"
 155 #define SYSTEM                  "rt11"
 156 #define COMPILER                "decus"
 157 #endif
 158
 159 #if TARGET == SYS_68000 || defined(M68000) || defined(m68000) || defined(m68k)
 160 /*
 161  * All three machine designators have been seen in various systems.
 162  * Warning -- compilers differ as to sizeof (int).  cpp3 assumes that
 163  * sizeof (int) == 2
 164  */
 165 #define MACHINE                 "M68000", "m68000", "m68k"
 166 #define SYSTEM                  "unix"
 167 #endif
 168
 169 #if     TARGET == SYS_UNIX
 170 #define SYSTEM                  "unix"
 171 #ifdef  pdp11
 172 #define MACHINE                 "pdp11"
 173 #endif
 174 #ifdef  vax
 175 #define MACHINE                 "vax"
 176 #endif
 177 #endif
 178
 179 /*
 180  * defaults
 181  */
 182
 183 #ifndef MSG_PREFIX
 184 #define MSG_PREFIX              "cpp: "
 185 #endif
 186
 187 #ifndef LINE_PREFIX
 188 #define LINE_PREFIX             ""
 189 #endif
 190 \f
 191 /*
 192  * OLD_PREPROCESSOR forces the definition of OK_DOLLAR, OK_CONCAT,
 193  * COMMENT_INVISIBLE, and STRING_FORMAL to values appropriate for
 194  * an old-style preprocessor.
 195  */
 196
 197 #ifndef OLD_PREPROCESSOR
 198 #define OLD_PREPROCESSOR        FALSE
 199 #endif
 200
 201 #if     OLD_PREPROCESSOR
 202 #define OK_DOLLAR               FALSE
 203 #define OK_CONCAT               TRUE
 204 #define COMMENT_INVISIBLE       TRUE
 205 #define STRING_FORMAL           TRUE
 206 #define IDMAX                   63      /* actually, seems to be unlimited */
 207 #endif
 208
 209 /*
 210  * RECURSION_LIMIT may be set to -1 to disable the macro recursion test.
 211  */
 212 #ifndef RECURSION_LIMIT
 213 #define RECURSION_LIMIT 1000
 214 #endif
 215
 216 /*
 217  * BITS_CHAR may be defined to set the number of bits per character.
 218  * it is needed only for multi-byte character constants.
 219  */
 220 #ifndef BITS_CHAR
 221 #define BITS_CHAR               8
 222 #endif
 223
 224 /*
 225  * BIG_ENDIAN is set TRUE on machines (such as the IBM 360 series)
 226  * where 'ab' stores 'a' in the high-bits and 'b' in the low-bits.
 227  * It is set FALSE on machines (such as the PDP-11 and Vax-11)
 228  * where 'ab' stores 'a' in the low-bits and 'b' in the high-bits.
 229  * (Or is it the other way around?) -- Warning: BIG_ENDIAN code is untested.
 230  */
 231 #ifndef BIG_ENDIAN
 232 #define BIG_ENDIAN              FALSE
 233 #endif
 234
 235 /*
 236  * COMMENT_INVISIBLE may be defined to allow "old-style" comment
 237  * processing, whereby the comment becomes a zero-length token
 238  * delimiter.  This permitted tokens to be concatenated in macro
 239  * expansions.  This was removed from the Draft Ansi Standard.
 240  */
 241 #ifndef COMMENT_INVISIBLE
 242 #define COMMENT_INVISIBLE       FALSE
 243 #endif
 244
 245 /*
 246  * STRING_FORMAL may be defined to allow recognition of macro parameters
 247  * anywhere in replacement strings.  This was removed from the Draft Ansi
 248  * Standard and a limited recognition capability added.
 249  */
 250 #ifndef STRING_FORMAL
 251 #define STRING_FORMAL           FALSE
 252 #endif
 253
 254 /*
 255  * OK_DOLLAR enables use of $ as a valid "letter" in identifiers.
 256  * This is a permitted extension to the Ansi Standard and is required
 257  * for e.g., VMS, RSX-11M, etc.   It should be set FALSE if cpp is
 258  * used to preprocess assembler source on Unix systems.  OLD_PREPROCESSOR
 259  * sets OK_DOLLAR FALSE for that reason.
 260  */
 261 #ifndef OK_DOLLAR
 262 #define OK_DOLLAR               TRUE
 263 #endif
 264
 265 /*
 266  * OK_CONCAT enables (one possible implementation of) token concatenation.
 267  * If cpp is used to preprocess Unix assembler source, this should be
 268  * set FALSE as the concatenation character, #, is used by the assembler.
 269  */
 270 #ifndef OK_CONCAT
 271 #define OK_CONCAT               TRUE
 272 #endif
 273
 274 /*
 275  * OK_DATE may be enabled to predefine today's date as a string
 276  * at the start of each compilation.  This is apparently not permitted
 277  * by the Draft Ansi Standard.
 278  */
 279 #ifndef OK_DATE
 280 #define OK_DATE         TRUE
 281 #endif
 282
 283 /*
 284  * The following definitions are used to allocate memory for
 285  * work buffers.  In general, they should not be modified
 286  * by implementors.
 287  *
 288  * PAR_MAC      The maximum number of #define parameters (31 per Standard)
 289  *              Note: we need another one for strings.
 290  * IDMAX        The longest identifier, 31 per Ansi Standard
 291  * NBUFF        Input buffer size
 292  * NWORK        Work buffer size -- the longest macro
 293  *              must fit here after expansion.
 294  * NEXP         The nesting depth of #if expressions
 295  * NINCLUDE     The number of directories that may be specified
 296  *              on a per-system basis, or by the -I option.
 297  * BLK_NEST     The number of nested #if's permitted.
 298  * NFWORK               FileNameWorkBuffer (added by erAck, was NWORK)
 299  */
 300
 301 #ifndef IDMAX
 302 #define IDMAX                    127
 303 #endif
 304 #ifdef SOLAR
 305 #define PAR_MAC           (253 + 1)
 306 #else
 307 #define PAR_MAC            (31 + 1)
 308 #endif
 309 /* ER 13.06.95 19:33
 310  da Makros im file->buffer expandiert werden, muss NBUFF mindestens NWORK sein
 311 #define NWORK                   4096
 312 #define NBUFF                   4096
 313  */
 314 /* ER 13.06.95 20:05  NWORK wg. grooossen Makros in *.src erhoeht,
 315  da wir bald 10 Sprachen haben werden gleich ordentlich reingehauen.. */
 316 #define NWORK                   128000
 317 #define NBUFF                   NWORK
 318 #define NFWORK                                  1024
 319 #define NEXP                    128
 320 #define NINCLUDE        100
 321 #define NPARMWORK               (NWORK * 2)
 322 #define BLK_NEST                32
 323
 324
 325 #ifndef ALERT
 326 #ifdef EBCDIC
 327 #define ALERT                                   '\057'
 328 #else
 329 #define ALERT                   '\007'          /* '\a' is "Bell"       */
 330 #endif
 331 #endif
 332
 333 #ifndef VT
 334 #define VT                      '\013'          /* Vertical Tab CTRL/K  */
 335 #endif
 336
 337
 338 #ifndef FILE_LOCAL
 339 #ifdef  decus
 340 #define FILE_LOCAL              static
 341 #else
 342 #ifdef  vax11c
 343 #define FILE_LOCAL              static
 344 #else
 345 #define FILE_LOCAL                              /* Others are global    */
 346 #endif
 347 #endif
 348 #endif
 349