| /* 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 */ |