From 1f808cd5d7423d498fa6197317af6a919f8c9e95 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Wed, 16 Jan 2002 05:52:38 +0000
Subject: 	* Makefile.am (eelf64ppc.c, eelf64lppc.c): Depend on
 ppc64elf.em. 	* Makefile.in: Regenerate. 	* emulparams/elf64ppc.sh
 (EXTRA_EM_FILE): Define. 	* emultempl/ppc64elf.em: New file.

---
 ld/emultempl/ppc64elf.em | 99 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 ld/emultempl/ppc64elf.em

(limited to 'ld/emultempl/ppc64elf.em')

diff --git a/ld/emultempl/ppc64elf.em b/ld/emultempl/ppc64elf.em
new file mode 100644
index 0000000..655ddea
--- /dev/null
+++ b/ld/emultempl/ppc64elf.em
@@ -0,0 +1,99 @@
+# This shell script emits a C file. -*- C -*-
+#   Copyright 2002 Free Software Foundation, Inc.
+#
+# This file is part of GLD, the Gnu Linker.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+
+# This file is sourced from elf32.em, and defines extra powerpc64-elf
+# specific routines.
+#
+cat >>e${EMULATION_NAME}.c <<EOF
+
+#include "elf64-ppc.h"
+
+static int need_laying_out = 0;
+
+static void gld${EMULATION_NAME}_after_allocation PARAMS ((void));
+static void gld${EMULATION_NAME}_finish PARAMS ((void));
+
+/* Call the back-end function to set TOC base after we have placed all
+   the sections.  */
+static void
+gld${EMULATION_NAME}_after_allocation ()
+{
+  if (!ppc64_elf_set_toc (output_bfd, &link_info))
+    einfo ("%X%P: can not set TOC base: %E\n");
+}
+
+/* Final emulation specific call.  PowerPC64 has 24 byte .plt entries,
+   and needs different call stubs for any entries that cross a 64k
+   boundary relative to the TOC.  That means we need to wait until all
+   sections have been laid out to initialise the stubs.  */
+
+static void
+gld${EMULATION_NAME}_finish ()
+{
+  /* If generating a relocatable output file, then we don't have any
+     stubs.  */
+  if (link_info.relocateable)
+    return;
+
+  /* bfd_elf64_discard_info just plays with debugging sections,
+     ie. doesn't affect any code, so we can delay resizing the
+     sections.  It's likely we'll resize everything in the process of
+     adjusting stub sizes.  */
+  if (bfd_elf${ELFSIZE}_discard_info (output_bfd, &link_info))
+    need_laying_out = 1;
+
+  while (1)
+    {
+      /* Call into the BFD backend to do the real work.  */
+      if (! ppc64_elf_size_stubs (output_bfd, &link_info, &need_laying_out))
+	{
+	  einfo ("%X%P: can not size stub section: %E\n");
+	  return;
+	}
+
+      if (!need_laying_out)
+	break;
+
+      /* If we have changed the size of the stub section, then we need
+	 to recalculate all the section offsets.  After this, we may
+	 need to adjust the stub size again.  */
+      need_laying_out = 0;
+
+      /* Resize the sections.  */
+      lang_size_sections (stat_ptr->head, abs_output_section,
+			  &stat_ptr->head, 0, (bfd_vma) 0, NULL);
+
+      /* Recalculate TOC base.  */
+      ldemul_after_allocation ();
+
+      /* Do the assignments again.  */
+      lang_do_assignments (stat_ptr->head, abs_output_section,
+			   (fill_type) 0, (bfd_vma) 0);
+    }
+
+  if (! ppc64_elf_build_stubs (output_bfd, &link_info))
+    einfo ("%X%P: can not build stubs: %E\n");
+}
+EOF
+
+# Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation
+#
+LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
+LDEMUL_FINISH=gld${EMULATION_NAME}_finish
-- 
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