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authorAlan Modra <amodra@gmail.com>2002-01-16 05:52:38 +0000
committerAlan Modra <amodra@gmail.com>2002-01-16 05:52:38 +0000
commit1f808cd5d7423d498fa6197317af6a919f8c9e95 (patch)
treef6f568d74a15e2c6d0f89d10c76210371d155089 /ld/emultempl
parent5d1634d792f2d90ada5c17faf98672c58717fc79 (diff)
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* 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.
Diffstat (limited to 'ld/emultempl')
-rw-r--r--ld/emultempl/ppc64elf.em99
1 files changed, 99 insertions, 0 deletions
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