arch/powerpc/xmon/ansidecl.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* ANSI and traditional C compatibility macros
   3    Copyright 1991, 1992 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6  */
   7
   8 /* ANSI and traditional C compatibility macros
   9
  10    ANSI C is assumed if __STDC__ is #defined.
  11
  12    Macro        ANSI C definition       Traditional C definition
  13    -----        ---- - ----------       ----------- - ----------
  14    PTR          `void *'                `char *'
  15    LONG_DOUBLE  `long double'           `double'
  16    VOLATILE     `volatile'              `'
  17    SIGNED       `signed'                `'
  18    PTRCONST     `void *const'           `char *'
  19    ANSI_PROTOTYPES  1                   not defined
  20
  21    CONST is also defined, but is obsolete.  Just use const.
  22
  23    DEFUN (name, arglist, args)
  24
  25         Defines function NAME.
  26
  27         ARGLIST lists the arguments, separated by commas and enclosed in
  28         parentheses.  ARGLIST becomes the argument list in traditional C.
  29
  30         ARGS list the arguments with their types.  It becomes a prototype in
  31         ANSI C, and the type declarations in traditional C.  Arguments should
  32         be separated with `AND'.  For functions with a variable number of
  33         arguments, the last thing listed should be `DOTS'.
  34
  35    DEFUN_VOID (name)
  36
  37         Defines a function NAME, which takes no arguments.
  38
  39    obsolete --     EXFUN (name, (prototype))    -- obsolete.
  40
  41         Replaced by PARAMS.  Do not use; will disappear someday soon.
  42         Was used in external function declarations.
  43         In ANSI C it is `NAME PROTOTYPE' (so PROTOTYPE should be enclosed in
  44         parentheses).  In traditional C it is `NAME()'.
  45         For a function that takes no arguments, PROTOTYPE should be `(void)'.
  46
  47     PARAMS ((args))
  48
  49         We could use the EXFUN macro to handle prototype declarations, but
  50         the name is misleading and the result is ugly.  So we just define a
  51         simple macro to handle the parameter lists, as in:
  52
  53               static int foo PARAMS ((int, char));
  54
  55         This produces:  `static int foo();' or `static int foo (int, char);'
  56
  57         EXFUN would have done it like this:
  58
  59               static int EXFUN (foo, (int, char));
  60
  61         but the function is not external...and it's hard to visually parse
  62         the function name out of the mess.   EXFUN should be considered
  63         obsolete; new code should be written to use PARAMS.
  64
  65     For example:
  66         extern int printf PARAMS ((CONST char *format DOTS));
  67         int DEFUN(fprintf, (stream, format),
  68                   FILE *stream AND CONST char *format DOTS) { ... }
  69         void DEFUN_VOID(abort) { ... }
  70 */
  71
  72 #ifndef _ANSIDECL_H
  73
  74 #define _ANSIDECL_H     1
  75
  76
  77 /* Every source file includes this file,
  78    so they will all get the switch for lint.  */
  79 /* LINTLIBRARY */
  80
  81
  82 #if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(WIN32)
  83 /* All known AIX compilers implement these things (but don't always
  84    define __STDC__).  The RISC/OS MIPS compiler defines these things
  85    in SVR4 mode, but does not define __STDC__.  */
  86
  87 #define PTR             void *
  88 #define PTRCONST        void *CONST
  89 #define LONG_DOUBLE     long double
  90
  91 #define AND             ,
  92 #define NOARGS          void
  93 #define CONST           const
  94 #define VOLATILE        volatile
  95 #define SIGNED          signed
  96 #define DOTS            , ...
  97
  98 #define EXFUN(name, proto)              name proto
  99 #define DEFUN(name, arglist, args)      name(args)
 100 #define DEFUN_VOID(name)                name(void)
 101
 102 #define PROTO(type, name, arglist)      type name arglist
 103 #define PARAMS(paramlist)               paramlist
 104 #define ANSI_PROTOTYPES                 1
 105
 106 #else   /* Not ANSI C.  */
 107
 108 #define PTR             char *
 109 #define PTRCONST        PTR
 110 #define LONG_DOUBLE     double
 111
 112 #define AND             ;
 113 #define NOARGS
 114 #define CONST
 115 #ifndef const /* some systems define it in header files for non-ansi mode */
 116 #define const
 117 #endif
 118 #define VOLATILE
 119 #define SIGNED
 120 #define DOTS
 121
 122 #define EXFUN(name, proto)              name()
 123 #define DEFUN(name, arglist, args)      name arglist args;
 124 #define DEFUN_VOID(name)                name()
 125 #define PROTO(type, name, arglist) type name ()
 126 #define PARAMS(paramlist)               ()
 127
 128 #endif  /* ANSI C.  */
 129
 130 #endif  /* ansidecl.h   */