Don't always provide definition of gets checking version

[platform/upstream/glibc.git] / bits / dlfcn.h

diff --git a/bits/dlfcn.h b/bits/dlfcn.h
index 7c33694..67fd96a 100644 (file)
--- a/bits/dlfcn.h
+++ b/bits/dlfcn.h
@@ -1,32 +1,65 @@
-/* System dependand definitions for run-time dynamic loading.
-   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+/* System dependent definitions for run-time dynamic loading.
+   Copyright (C) 1996-2001, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
 
    The GNU C Library 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
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
 
 #ifndef _DLFCN_H
 # error "Never use <bits/dlfcn.h> directly; include <dlfcn.h> instead."
 #endif
 
 /* The MODE argument to `dlopen' contains one of the following: */
-#define RTLD_LAZY      0x001   /* Lazy function call binding.  */
-#define RTLD_NOW       0x002   /* Immediate function call binding.  */
-#define        RTLD_BINDING_MASK 0x3   /* Mask of binding time value.  */
+#define RTLD_LAZY      0x00001 /* Lazy function call binding.  */
+#define RTLD_NOW       0x00002 /* Immediate function call binding.  */
+#define        RTLD_BINDING_MASK   0x3 /* Mask of binding time value.  */
+#define RTLD_NOLOAD    0x00004 /* Do not load the object.  */
+#define RTLD_DEEPBIND  0x00008 /* Use deep binding.  */
 
 /* If the following bit is set in the MODE argument to `dlopen',
    the symbols of the loaded object and its dependencies are made
    visible as if the object were linked directly into the program.  */
-#define RTLD_GLOBAL    0x100
+#define RTLD_GLOBAL    0x00100
+
+/* Unix98 demands the following flag which is the inverse to RTLD_GLOBAL.
+   The implementation does this by default and so we can define the
+   value to zero.  */
+#define RTLD_LOCAL     0
+
+/* Do not delete object when closed.  */
+#define RTLD_NODELETE  0x01000
+
+#ifdef __USE_GNU
+/* To support profiling of shared objects it is a good idea to call
+   the function found using `dlsym' using the following macro since
+   these calls do not use the PLT.  But this would mean the dynamic
+   loader has no chance to find out when the function is called.  The
+   macro applies the necessary magic so that profiling is possible.
+   Rewrite
+       foo = (*fctp) (arg1, arg2);
+   into
+        foo = DL_CALL_FCT (fctp, (arg1, arg2));
+*/
+# define DL_CALL_FCT(fctp, args) \
+  (_dl_mcount_wrapper_check ((void *) (fctp)), (*(fctp)) args)
+
+__BEGIN_DECLS
+
+/* This function calls the profiling functions.  */
+extern void _dl_mcount_wrapper_check (void *__selfpc) __THROW;
+
+__END_DECLS
+
+#endif