dlfcn: Move dlopen into libc

The symbol was moved using scripts/move-symbol-to-libc.py.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

70 files changed, 193 insertions, 96 deletions

diff --git a/dlfcn/Makefile b/dlfcn/Makefile
index 08d92f85fc..a471d86071 100644
--- a/dlfcn/Makefile
+++ b/dlfcn/Makefile
@@ -21,8 +21,7 @@ include ../Makeconfig
 
 headers		:= bits/dlfcn.h dlfcn.h
 extra-libs	:= libdl
-libdl-routines	:= dlopen \
-		   dlfcn
+libdl-routines	:= dlfcn
 routines	:= $(patsubst %,s%,$(filter-out dlfcn,$(libdl-routines)))
 elide-routines.os := $(routines)
 routines += \
@@ -32,6 +31,7 @@ routines += \
   dlerror \
   dlinfo \
   dlmopen \
+  dlopen \
   dlsym \
   dlvsym \
   libc_dlerror_result \
@@ -39,8 +39,8 @@ routines += \
 extra-libs-others := libdl
 
 ifeq ($(build-shared),yes)
-libdl-routines	+= dlopenold
-libdl-shared-only-routines := dlopenold dlfcn
+routines += dlopenold
+shared-only-routines := dlopenold dlfcn
 endif
 
 ifeq (yes,$(build-shared))
diff --git a/dlfcn/Versions b/dlfcn/Versions
index 3c4fa2742e..cc34eb824d 100644
--- a/dlfcn/Versions
+++ b/dlfcn/Versions
@@ -3,9 +3,11 @@ libc {
     dladdr;
     dlclose;
     dlerror;
+    dlopen;
     dlsym;
   }
   GLIBC_2.1 {
+    dlopen;
     dlvsym;
   }
   GLIBC_2.3.3 {
@@ -22,6 +24,7 @@ libc {
     dlerror;
     dlinfo;
     dlmopen;
+    dlopen;
     dlsym;
     dlvsym;
   }
@@ -33,10 +36,10 @@ libc {
 }
 libdl {
   GLIBC_2.0 {
-    dlopen;
+    __libdl_version_placeholder;
   }
   GLIBC_2.1 {
-    dlopen;
+    __libdl_version_placeholder;
   }
   GLIBC_2.3.3 {
     __libdl_version_placeholder;
diff --git a/dlfcn/dlfcn.c b/dlfcn/dlfcn.c
index 55ecfcabbe..ef750bc27a 100644
--- a/dlfcn/dlfcn.c
+++ b/dlfcn/dlfcn.c
@@ -48,14 +48,22 @@ __libdl_version_placeholder_1 (void)
 {
 }
 
-#if SHLIB_COMPAT (libdl, GLIBC_2_3_3, GLIBC_2_34) \
-  && ABI_libdl_GLIBC_2_3_3 != ABI_libdl_GLIBC_2_1
+#if SHLIB_COMPAT (libdl, GLIBC_2_0, GLIBC_2_34)
+compat_symbol (libdl, __libdl_version_placeholder_1,
+               __libdl_version_placeholder, GLIBC_2_0);
+#endif
+
+#if SHLIB_COMPAT (libdl, GLIBC_2_1, GLIBC_2_34)
+compat_symbol (libdl, __libdl_version_placeholder_1,
+               __libdl_version_placeholder, GLIBC_2_1);
+#endif
+
+#if SHLIB_COMPAT (libdl, GLIBC_2_3_3, GLIBC_2_34)
 compat_symbol (libdl, __libdl_version_placeholder_1,
                __libdl_version_placeholder, GLIBC_2_3_3);
 #endif
 
-#if SHLIB_COMPAT (libdl, GLIBC_2_3_4, GLIBC_2_34) \
-  && ABI_libdl_GLIBC_2_3_4 != ABI_libdl_GLIBC_2_1
+#if SHLIB_COMPAT (libdl, GLIBC_2_3_4, GLIBC_2_34)
 compat_symbol (libdl, __libdl_version_placeholder_1,
                __libdl_version_placeholder, GLIBC_2_3_4);
 #endif
diff --git a/dlfcn/dlopen.c b/dlfcn/dlopen.c
index d51e006453..afdc113efb 100644
--- a/dlfcn/dlopen.c
+++ b/dlfcn/dlopen.c
@@ -21,17 +21,7 @@
 #include <stddef.h>
 #include <unistd.h>
 #include <ldsodefs.h>
-
-#if !defined SHARED && IS_IN (libdl)
-
-void *
-dlopen (const char *file, int mode)
-{
-  return __dlopen (file, mode, RETURN_ADDRESS (0));
-}
-static_link_warning (dlopen)
-
-#else
+#include <shlib-compat.h>
 
 struct dlopen_args
 {
@@ -46,11 +36,11 @@ struct dlopen_args
 
 
 /* Non-shared code has no support for multiple namespaces.  */
-# ifdef SHARED
-#  define NS __LM_ID_CALLER
-# else
-#  define NS LM_ID_BASE
-# endif
+#ifdef SHARED
+# define NS __LM_ID_CALLER
+#else
+# define NS LM_ID_BASE
+#endif
 
 
 static void
@@ -66,38 +56,54 @@ dlopen_doit (void *a)
   args->new = GLRO(dl_open) (args->file ?: "", args->mode | __RTLD_DLOPEN,
 			     args->caller,
 			     args->file == NULL ? LM_ID_BASE : NS,
-			     __dlfcn_argc, __dlfcn_argv, __environ);
+			     __libc_argc, __libc_argv, __environ);
 }
 
 
-void *
-__dlopen (const char *file, int mode DL_CALLER_DECL)
+static void *
+dlopen_implementation (const char *file, int mode, void *dl_caller)
 {
-# ifdef SHARED
-  if (!rtld_active ())
-    return _dlfcn_hook->dlopen (file, mode, DL_CALLER);
-# endif
-
   struct dlopen_args args;
   args.file = file;
   args.mode = mode;
-  args.caller = DL_CALLER;
+  args.caller = dl_caller;
 
-# ifdef SHARED
   return _dlerror_run (dlopen_doit, &args) ? NULL : args.new;
-# else
-  if (_dlerror_run (dlopen_doit, &args))
-    return NULL;
+}