1 /* Generic relocation support for BFD. 2 Copyright 1998, 1999, 2000, 2003 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 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. 10 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. 15 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 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) 24 25 Given a header file like this: 26 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) 33 34 Then the following will be produced by default (ie if 35 RELOC_MACROS_GEN_FUNC is *not* defined). 36 37 enum foo 38 { 39 R_foo_NONE = 0, 40 R_foo_32 = 1, 41 R_foo_good, 42 R_foo_illegal = 9, 43 R_foo_count 44 }; 45 46 If RELOC_MACROS_GEN_FUNC *is* defined, then instead the 47 following function will be generated: 48 49 static const char *foo (unsigned long rtype); 50 static const char * 51 foo (unsigned long rtype) 52 { 53 switch (rtype) 54 { 55 case 0: return "R_foo_NONE"; 56 case 1: return "R_foo_32"; 57 default: return NULL; 58 } 59 } 60 */ 61 62 #ifndef _RELOC_MACROS_H 63 #define _RELOC_MACROS_H 64 65 #ifdef RELOC_MACROS_GEN_FUNC 66 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. */ 70 71 #define START_RELOC_NUMBERS(name) \ 72 static const char *name (unsigned long rtype); \ 73 static const char * \ 74 name (unsigned long rtype) \ 75 { \ 76 switch (rtype) \ 77 { 78 79 #define RELOC_NUMBER(name, number) \ 80 case number: return #name; 81 82 #define FAKE_RELOC(name, number) 83 #define EMPTY_RELOC(name) 84 85 #define END_RELOC_NUMBERS(name) \ 86 default: return NULL; \ 87 } \ 88 } 89 90 91 #else /* Default to generating enum. */ 92 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 }; 98 99 #endif 100 101 #endif /* RELOC_MACROS_H */ 102