1 /* Generic relocation support for BFD.
2 Copyright 1998, 1999, 2000, 2003 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20 /* These macros are used by the various *.h target specific header
21 files to either generate an enum containing all the known relocations
22 for that target, or if RELOC_MACROS_GEN_FUNC is defined, a recognition
23 function is generated instead. (This is used by binutils/readelf.c)
25 Given a header file like this:
27 START_RELOC_NUMBERS (foo)
28 RELOC_NUMBER (R_foo_NONE, 0)
29 RELOC_NUMBER (R_foo_32, 1)
30 EMPTY_RELOC (R_foo_good)
31 FAKE_RELOC (R_foo_illegal, 9)
32 END_RELOC_NUMBERS (R_foo_count)
34 Then the following will be produced by default (ie if
35 RELOC_MACROS_GEN_FUNC is *not* defined).
46 If RELOC_MACROS_GEN_FUNC *is* defined, then instead the
47 following function will be generated:
49 static const char *foo (unsigned long rtype);
51 foo (unsigned long rtype)
55 case 0: return "R_foo_NONE";
56 case 1: return "R_foo_32";
62 #ifndef _RELOC_MACROS_H
63 #define _RELOC_MACROS_H
65 #ifdef RELOC_MACROS_GEN_FUNC
67 /* This function takes the relocation number and returns the
68 string version name of the name of that relocation. If
69 the relocation is not recognised, NULL is returned. */
71 #define START_RELOC_NUMBERS(name) \
72 static const char *name (unsigned long rtype); \
74 name (unsigned long rtype) \
79 #define RELOC_NUMBER(name, number) \
80 case number: return #name;
82 #define FAKE_RELOC(name, number)
83 #define EMPTY_RELOC(name)
85 #define END_RELOC_NUMBERS(name) \
86 default: return NULL; \
91 #else /* Default to generating enum. */
93 #define START_RELOC_NUMBERS(name) enum name {
94 #define RELOC_NUMBER(name, number) name = number,
95 #define FAKE_RELOC(name, number) name = number,
96 #define EMPTY_RELOC(name) name,
97 #define END_RELOC_NUMBERS(name) name };
101 #endif /* RELOC_MACROS_H */
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