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/* Generic relocation support for BFD.

   Copyright (C) 1998 Free Software Foundation, Inc.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software Foundation,

   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* These macros are used by the various *.h target specific header

   files to either generate an enum containing all the known relocations

   for that target, or if RELOC_MACROS_GEN_FUNC is defined, a recognition

   function is generated instead.  (This is used by binutils/readelf.c)

   Given a header file like this:

        START_RELOC_NUMBERS (foo)

            RELOC_NUMBER (R_foo_NONE,    0)

            RELOC_NUMBER (R_foo_32,      1)

            FAKE_RELOC   (R_foo_illegal, 2)

            EMPTY_RELOC  (R_foo_max)

        END_RELOC_NUMBERS

   Then the following will be produced by default (ie if

   RELOC_MACROS_GEN_FUNC is *not* defined).

        enum foo

        {

          foo = -1,

          R_foo_NONE = 0,

          R_foo_32 = 1,

          R_foo_illegal = 2,

          R_foo_max

        };

   If RELOC_MACROS_GEN_FUNC *is* defined, then instead the

   following function will be generated:

        static const char * foo PARAMS ((unsigned long rtype));

        static const char *

        foo (rtype)

            unsigned long rtype;

        {

           switch (rtype)

           {

           case 0: return "R_foo_NONE";

           case 1: return "R_foo_32";

           default: return NULL;

           }

        }

   */

#ifndef _RELOC_MACROS_H

#define _RELOC_MACROS_H

#ifdef RELOC_MACROS_GEN_FUNC

/* This function takes the relocation number and returns the

   string version name of the name of that relocation.  If

   the relocation is not recognised, NULL is returned.  */

#define START_RELOC_NUMBERS(name)                               \

static const char * name    PARAMS ((unsigned long rtype));     \

static const char *                                             \

name (rtype)                                                    \

        unsigned long rtype;                                    \

{                                                               \

  switch (rtype)                                                \

  {

#ifdef __STDC__                                   

#define RELOC_NUMBER(name, number)  case number : return #name ;

#else

#define RELOC_NUMBER(name, number)  case number : return "name" ;

#endif

#define FAKE_RELOC(name, number)    

#define EMPTY_RELOC(name)

#define END_RELOC_NUMBERS       \

    default: return NULL;       \

  }                             \

}

#else /* Default to generating enum.  */

/* Some compilers cannot cope with an enum that ends with a trailing

   comma, so START_RELOC_NUMBERS creates a fake reloc entry, (initialised

   to -1 so that the first real entry will still default to 0).  Further

   entries then prepend a comma to their definitions, creating a list

   of enumerator entries that will satisfy these compilers.  */

#ifdef __STDC__

#define START_RELOC_NUMBERS(name)   enum name { _##name = -1

#else

#define START_RELOC_NUMBERS(name)   enum name { name = -1

#endif

#define RELOC_NUMBER(name, number)  , name = number

#define FAKE_RELOC(name, number)    , name = number 

#define EMPTY_RELOC(name)           , name 

#define END_RELOC_NUMBERS           };

#endif

#endif /* RELOC_MACROS_H */