From 8bd621d8835d2e6a99bd50ae8d18328ab06951ba Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Wed, 3 Oct 2001 15:11:48 +0000
Subject: [PATCH] Add support for -z nocopyreloc.

---
 bfd/ChangeLog         | 4 ++++
 bfd/elf32-i386.c      | 7 +++++++
 include/ChangeLog     | 4 ++++
 include/bfdlink.h     | 4 ++++
 ld/ChangeLog          | 6 ++++++
 ld/NEWS               | 3 +++
 ld/emultempl/elf32.em | 2 ++
 ld/ld.texinfo         | 6 ++++--
 8 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index c1ce396f59c..d898b1d232c 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,7 @@
+2001-10-03  Vassili Karpov  <malc@pulsesoft.com>
+
+	* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Handle nocopyreloc.
+
 2001-10-03  Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
 
 	* elf64-mips.c (elf_backend_may_use_rela_p): New define.
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index 719a209491a..e2493044767 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -1127,6 +1127,13 @@ elf_i386_adjust_dynamic_symbol (info, h)
   if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
     return true;
 
+  /* If -z nocopyreloc was given, we won't generate them either.  */
+  if (info->nocopyreloc)
+    {
+      h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
+      return true;
+    }
+
   eh = (struct elf_i386_link_hash_entry *) h;
   for (p = eh->dyn_relocs; p != NULL; p = p->next)
     {
diff --git a/include/ChangeLog b/include/ChangeLog
index 99bd9320278..030ebfe788c 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2001-10-03  Vassili Karpov  <malc@pulsesoft.com>
+
+	* bfdlink.h (struct bfd_link_info): Add nocopyreloc field.
+
 2001-09-24  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* libiberty.h (reconcat): New function.
diff --git a/include/bfdlink.h b/include/bfdlink.h
index 9ada606e31d..0865594380d 100644
--- a/include/bfdlink.h
+++ b/include/bfdlink.h
@@ -294,6 +294,10 @@ struct bfd_link_info
      and sorted so that relocs against the same symbol come together.  */
   boolean combreloc;
 
+  /* True if executable should not contain copy relocs.
+     Setting this true may result in a non-sharable text segment.  */
+  boolean nocopyreloc;
+
   /* How many spare .dynamic DT_NULL entries should be added?  */
   unsigned int spare_dynamic_tags;
 };
diff --git a/ld/ChangeLog b/ld/ChangeLog
index 29b2647526d..819f5fab98f 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,9 @@
+2001-10-03  Vassili Karpov  <malc@pulsesoft.com>
+
+	* emultempl/elf32.em (parse_args): Handle -z nocopyreloc.
+	* NEWS: Mention -z nocopyreloc.
+	* ld.texinfo (Options): Describe nocopyreloc.
+
 2001-10-03  Alan Modra  <amodra@bigpond.net.au>
 
 	* configure: Regenerate.
diff --git a/ld/NEWS b/ld/NEWS
index 27dc89105fd..70997ef23ee 100644
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -1,4 +1,7 @@
 -*- text -*-
+* Support for -z nocopyreloc in the x86 ELF linker, which disables
+  production of copy relocs.  Warning: using this option may result in
+  non-sharable applications.
 
 * Support for -z combreloc in the ELF linker, which puts dynamic
   relocations against the same symbol together, so that dynamic linker
diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index f2011cece4b..c9cf50d914c 100644
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -1517,6 +1517,8 @@ cat >>e${EMULATION_NAME}.c <<EOF
 	link_info.combreloc = true;
       else if (strcmp (optarg, "nocombreloc") == 0)
 	link_info.combreloc = false;
+      else if (strcmp (optarg, "nocopyreloc") == 0)
+        link_info.nocopyreloc = true;
       /* What about the other Solaris -z options? FIXME.  */
       break;
 EOF
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 0b67ae10f7c..9b10cc66234 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -840,8 +840,9 @@ for Solaris compatibility.
 @item -z @var{keyword}
 The recognized keywords are @code{initfirst}, @code{interpose},
 @code{loadfltr}, @code{nodefaultlib}, @code{nodelete}, @code{nodlopen},
-@code{nodump}, @code{now}, @code{origin}, @code{combreloc} and
-@code{nocombreloc}. The other keywords are
+@code{nodump}, @code{now}, @code{origin}, @code{combreloc}, @code{nocombreloc} 
+and @code{nocopyreloc}.
+The other keywords are
 ignored for Solaris compatibility. @code{initfirst} marks the object
 to be initialized first at runtime before any other objects.
 @code{interpose} marks the object that its symbol table interposes
@@ -858,6 +859,7 @@ of this object will ignore any default library search paths.
 @code{combreloc} combines multiple reloc sections and sorts them
 to make dynamic symbol lookup caching possible.
 @code{nocombreloc} disables multiple reloc sections combining.
+@code{nocopyreloc} disables production of copy relocs.
 
 @kindex -(
 @cindex groups of archives
-- 
2.30.2