/* Generic relocation support for BFD.
- Copyright (C) 1998 Free Software Foundation, Inc.
+ Copyright (C) 1998-2021 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
/* These macros are used by the various *.h target specific header
files to either generate an enum containing all the known relocations
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
+ 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
{
- foo = -1,
R_foo_NONE = 0,
R_foo_32 = 1,
- R_foo_illegal = 2,
- R_foo_max
+ 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 precedes 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
+ preceding *_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 PARAMS ((unsigned long rtype));
+ static const char *foo (unsigned long rtype);
static const char *
- foo (rtype)
- unsigned long rtype;
+ foo (unsigned long rtype)
{
switch (rtype)
{
}
}
*/
-
+
#ifndef _RELOC_MACROS_H
#define _RELOC_MACROS_H
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 (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 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
-
-#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 /* RELOC_MACROS_H */
+#endif /* _RELOC_MACROS_H */
projects / thirdparty / binutils-gdb.git / blobdiff