diff options
Diffstat (limited to 'misc/buildroot/toolchain/nxflat/reloc-macros.h')
| -rw-r--r-- | misc/buildroot/toolchain/nxflat/reloc-macros.h | 189 |
1 files changed, 103 insertions, 86 deletions
diff --git a/misc/buildroot/toolchain/nxflat/reloc-macros.h b/misc/buildroot/toolchain/nxflat/reloc-macros.h index 5cef95154..c3f88ba7a 100644 --- a/misc/buildroot/toolchain/nxflat/reloc-macros.h +++ b/misc/buildroot/toolchain/nxflat/reloc-macros.h @@ -1,8 +1,14 @@ /*********************************************************************** - * toolchain/nxflat/reloc-macros.h - * + * xflat/tools/arm/arch.h * Generic relocation support for BFD. - * Copyright (C) 1998 Free Software Foundation, Inc. + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Simply lifted with minimal change from the BFD, binutils 2.19.1: + * + * Copyright 1998, 1999, 2000, 2003 Free Software Foundation, Inc. + * Free Software Foundation, Inc. * * This file is part of BFD, the Binary File Descriptor library. * @@ -18,106 +24,117 @@ * * 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) + * Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. * - * 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 +/* 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: -# ifdef RELOC_MACROS_GEN_FUNC + START_RELOC_NUMBERS (foo) + RELOC_NUMBER (R_foo_NONE, 0) + RELOC_NUMBER (R_foo_32, 1) + EMPTY_RELOC (R_foo_good) + FAKE_RELOC (R_foo_illegal, 9) + END_RELOC_NUMBERS (R_foo_count) + + Then the following will be produced by default (ie if + RELOC_MACROS_GEN_FUNC is *not* defined). + + enum foo + { + R_foo_NONE = 0, + R_foo_32 = 1, + R_foo_good, + R_foo_illegal = 9, + R_foo_count + }; + + Note: The value of the symbol defined in the END_RELOC_NUMBERS + macro (R_foo_count in the case of the example above) will be + set to the value of the whichever *_RELOC macro preceeds it plus + one. Therefore if you intend to use the symbol as a sentinel for + the highest valid macro value you should make sure that the + preceeding *_RELOC macro is the highest valid number. ie a + declaration like this: + + START_RELOC_NUMBERS (foo) + RELOC_NUMBER (R_foo_NONE, 0) + RELOC_NUMBER (R_foo_32, 1) + FAKE_RELOC (R_foo_illegal, 9) + FAKE_RELOC (R_foo_synonym, 0) + END_RELOC_NUMBERS (R_foo_count) + + will result in R_foo_count having a value of 1 (R_foo_synonym + 1) + rather than 10 or 2 as might be expected. + + Alternatively you can assign a value to END_RELOC_NUMBERS symbol + explicitly, like this: + + START_RELOC_NUMBERS (foo) + RELOC_NUMBER (R_foo_NONE, 0) + RELOC_NUMBER (R_foo_32, 1) + FAKE_RELOC (R_foo_illegal, 9) + FAKE_RELOC (R_foo_synonym, 0) + END_RELOC_NUMBERS (R_foo_count = 2) + + If RELOC_MACROS_GEN_FUNC *is* defined, then instead the + following function will be generated: + + static const char *foo (unsigned long rtype); + static const char * + foo (unsigned long rtype) + { + switch (rtype) + { + case 0: return "R_foo_NONE"; + case 1: return "R_foo_32"; + default: return NULL; + } + } + */ + +#ifndef __TOOLCHAIN_NXFLAT_RELOC_MACROS_H +#define __TOOLCHAIN_NXFLAT_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. - */ + 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)); \ +#define START_RELOC_NUMBERS(name) \ +static const char *name (unsigned long rtype); \ static const char * \ -name (rtype) \ - unsigned long rtype; \ +name (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 RELOC_NUMBER(name, number) \ + case number: return #name; -# define FAKE_RELOC(name, number) -# define EMPTY_RELOC(name) +#define FAKE_RELOC(name, number) +#define EMPTY_RELOC(name) -# define END_RELOC_NUMBERS \ +#define END_RELOC_NUMBERS(name) \ 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 +#else /* Default to generating enum. */ -# define RELOC_NUMBER(name, number) , name = number -# define FAKE_RELOC(name, number) , name = number -# define EMPTY_RELOC(name) , name -# define END_RELOC_NUMBERS }; +#define START_RELOC_NUMBERS(name) enum name { +#define RELOC_NUMBER(name, number) name = number, +#define FAKE_RELOC(name, number) name = number, +#define EMPTY_RELOC(name) name, +#define END_RELOC_NUMBERS(name) name }; -# endif +#endif -#endif /* RELOC_MACROS_H */ +#endif /* __TOOLCHAIN_NXFLAT_RELOC_MACROS_H */ |