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