From 94ba134cf6431dad0aaece271a16761bc793d490 Mon Sep 17 00:00:00 2001
From: joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d>
Date: Tue, 2 Jul 2013 00:11:45 +0000
Subject: Merge changes between r23363 and r23421 from /fsf/trunk.

git-svn-id: svn://svn.eglibc.org/trunk@23422 7b3dc134-2b1b-0410-93df-9e9f96275f8d
---
 libc/elf/dl-support.c | 55 ++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 48 insertions(+), 7 deletions(-)

(limited to 'libc/elf/dl-support.c')

diff --git a/libc/elf/dl-support.c b/libc/elf/dl-support.c
index 75f713fc9..fe5804fe3 100644
--- a/libc/elf/dl-support.c
+++ b/libc/elf/dl-support.c
@@ -73,17 +73,52 @@ const char *_dl_origin_path;
 /* Nonzero if runtime lookup should not update the .got/.plt.  */
 int _dl_bind_not;
 
+/* A dummy link map for the executable, used by dlopen to access the global
+   scope.  We don't export any symbols ourselves, so this can be minimal.  */
+static struct link_map _dl_main_map =
+  {
+    .l_name = (char *) "",
+    .l_real = &_dl_main_map,
+    .l_ns = LM_ID_BASE,
+    .l_libname = &(struct libname_list) { .name = "", .dont_free = 1 },
+    .l_searchlist =
+      {
+	.r_list = &(struct link_map *) { &_dl_main_map },
+	.r_nlist = 1,
+      },
+    .l_symbolic_searchlist = { .r_list = &(struct link_map *) { NULL } },
+    .l_type = lt_executable,
+    .l_scope_mem = { &_dl_main_map.l_searchlist },
+    .l_scope_max = (sizeof (_dl_main_map.l_scope_mem)
+		    / sizeof (_dl_main_map.l_scope_mem[0])),
+    .l_scope = _dl_main_map.l_scope_mem,
+    .l_local_scope = { &_dl_main_map.l_searchlist },
+    .l_used = 1,
+    .l_tls_offset = NO_TLS_OFFSET,
+    .l_serial = 1,
+  };
+
 /* Namespace information.  */
-struct link_namespaces _dl_ns[DL_NNS];
-size_t _dl_nns;
+struct link_namespaces _dl_ns[DL_NNS] =
+  {
+    [LM_ID_BASE] =
+      {
+	._ns_loaded = &_dl_main_map,
+	._ns_nloaded = 1,
+	._ns_main_searchlist = &_dl_main_map.l_searchlist,
+      }
+  };
+size_t _dl_nns = 1;
 
 /* Incremented whenever something may have been added to dl_loaded. */
-unsigned long long _dl_load_adds;
+unsigned long long _dl_load_adds = 1;
 
-/* Fake scope.  In dynamically linked binaries this is the scope of the
-   main application but here we don't have something like this.  So
-   create a fake scope containing nothing.  */
-struct r_scope_elem _dl_initial_searchlist;
+/* Fake scope of the main application.  */
+struct r_scope_elem _dl_initial_searchlist =
+  {
+    .r_list = &(struct link_map *) { &_dl_main_map },
+    .r_nlist = 1,
+  };
 
 #ifndef HAVE_INLINED_SYSCALLS
 /* Nonzero during startup.  */
@@ -133,6 +168,7 @@ ElfW(auxv_t) *_dl_auxv;
 const ElfW(Phdr) *_dl_phdr;
 size_t _dl_phnum;
 uint64_t _dl_hwcap __attribute__ ((nocommon));
+uint64_t _dl_hwcap2 __attribute__ ((nocommon));
 
 /* This is not initialized to HWCAP_IMPORTANT, matching the definition
    of _dl_important_hwcaps, below, where no hwcap strings are ever
@@ -217,6 +253,9 @@ _dl_aux_init (ElfW(auxv_t) *av)
       case AT_HWCAP:
 	GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val;
 	break;
+      case AT_HWCAP2:
+	GLRO(dl_hwcap2) = (unsigned long int) av->a_un.a_val;
+	break;
 #ifdef NEED_DL_SYSINFO
       case AT_SYSINFO:
 	GL(dl_sysinfo) = av->a_un.a_val;
@@ -268,6 +307,8 @@ void
 internal_function
 _dl_non_dynamic_init (void)
 {
+  _dl_main_map.l_origin = _dl_get_origin ();
+
   if (HP_TIMING_AVAIL)
     HP_TIMING_NOW (_dl_cpuclock_offset);
 
-- 
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