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/* Generic relocation support for BFD.
Copyright 1998, 1999, 2000 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)
EMPTY_RELOC (R_foo_good)
FAKE_RELOC (R_foo_illegal, 9)
END_RELOC_NUMBERS (R_foo_count)

Then the following will be produced by default (ie if
RELOC_MACROS_GEN_FUNC is *not* defined).

enum foo
{
R_foo_NONE = 0,
R_foo_32 = 1,
R_foo_good,
R_foo_illegal = 9,
R_foo_count
};

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) \
{

#if defined (__STDC__) || defined (ALMOST_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(name) \
default: return NULL; \
} \
}


#else /* Default to generating enum. */

#define START_RELOC_NUMBERS(name) enum name {
#define RELOC_NUMBER(name, number) name = number,
#define FAKE_RELOC(name, number) name = number,
#define EMPTY_RELOC(name) name,
#define END_RELOC_NUMBERS(name) name };

#endif

#endif /* RELOC_MACROS_H */
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