From: Alan Modra <amodra@gmail.com>
Date: Thu, 9 Apr 2015 09:08:03 +0000 (+0930)
Subject: Mark _init and _fini for --gc-sections
X-Git-Tag: gdb-7.10-release~862
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6166ed9330a9afd41859d5a716cb9019c338a8ca;p=external%2Fbinutils.git

Mark _init and _fini for --gc-sections

gold marks _init and _fini via symbol, ld marks them via section
(default scripts set .init and .fini section KEEP).  This makes it
possible for people to write their own _init and not bother to put the
function into the right section.

	PR ld/18223
	* ldlang.c (lang_process): Add _init and _fini to gc_sym_list.
---

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 9e79980..b4d3ceb 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,8 @@
+2015-04-10  Alan Modra  <amodra@gmail.com>
+
+	PR ld/18223
+	* ldlang.c (lang_process): Add _init and _fini to gc_sym_list.
+
 2015-04-09  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* emulparams/elf_x86_64.sh (BNDPLT): Removed.
diff --git a/ld/ldlang.c b/ld/ldlang.c
index cbd5bc3..b074169 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -6692,6 +6692,22 @@ lang_process (void)
   link_info.gc_sym_list = &entry_symbol;
   if (entry_symbol.name == NULL)
     link_info.gc_sym_list = ldlang_undef_chain_list_head;
+  if (link_info.init_function != NULL)
+    {
+      struct bfd_sym_chain *sym
+	= (struct bfd_sym_chain *) stat_alloc (sizeof (*sym));
+      sym->next = link_info.gc_sym_list;
+      sym->name = link_info.init_function;
+      link_info.gc_sym_list = sym;
+    }
+  if (link_info.fini_function != NULL)
+    {
+      struct bfd_sym_chain *sym
+	= (struct bfd_sym_chain *) stat_alloc (sizeof (*sym));
+      sym->next = link_info.gc_sym_list;
+      sym->name = link_info.fini_function;
+      link_info.gc_sym_list = sym;
+    }
 
   ldemul_after_open ();
   if (config.map_file != NULL)