diff options
Diffstat (limited to 'include/elf/reloc-macros.h')
| -rw-r--r-- | include/elf/reloc-macros.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/include/elf/reloc-macros.h b/include/elf/reloc-macros.h new file mode 100644 index 000000000..976229129 --- /dev/null +++ b/include/elf/reloc-macros.h @@ -0,0 +1,116 @@ +/* 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 char * foo PARAMS ((unsigned long rtype)); + static 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 */ |