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-rw-r--r--elf/dlfcn.h17
1 files changed, 12 insertions, 5 deletions
diff --git a/elf/dlfcn.h b/elf/dlfcn.h
index 715e1783cf..d2a27b85a2 100644
--- a/elf/dlfcn.h
+++ b/elf/dlfcn.h
@@ -21,16 +21,23 @@
#define _DLFCN_H 1
#include <features.h>
+#define __need_NULL
+#include <stddef.h>
/* Collect various system dependand definitions and declarations. */
#include <bits/dlfcn.h>
-/* If the first argument of `dlsym' is set to RTLD_NEXT the run-time
- address of the symbol called NAME in the next shared object is
- returned. The "next" relation is defined by the order the shared
- objects were loaded. */
+/* If the first argument of `dlsym' or `dlvsym' is set to RTLD_NEXT
+ the run-time address of the symbol called NAME in the next shared
+ object is returned. The "next" relation is defined by the order
+ the shared objects were loaded. */
#define RTLD_NEXT ((void *) -1l)
+/* If the first argument to `dlsym' or `dlvsym' is set to RTLD_DEFAULT
+ the run-time address of the symbol called NAME in the global scope
+ is returned. */
+#define RTLD_DEFAULT NULL
+
__BEGIN_DECLS
/* Open the shared object FILE and map it in; return a handle that can be
@@ -57,6 +64,7 @@ extern void *dlvsym __P ((void *__handle, __const char *__name,
the error string so that a following call returns null. */
extern char *dlerror __P ((void));
+#ifdef __USE_GNU
/* Fill in *INFO with the following information about ADDRESS.
Returns 0 iff no shared object's segments contain that address. */
typedef struct
@@ -68,7 +76,6 @@ typedef struct
} Dl_info;
extern int dladdr __P ((const void *__address, Dl_info *__info));
-#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