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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 */
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