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* elf.c (assign_file_positions_for_load_sections): We can require fewer phdrs than expected. ld/ * emultempl/elf-generic.em (gdl_map_segments): Only allow header shrinkage for the first few iterations. ld/testsuite/ * ld-elf/header.d: New. * ld-elf/header.t: New. * ld-elf/header.s: New.
82 lines
2.3 KiB
Plaintext
82 lines
2.3 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# Copyright 2006 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 Foundation, Inc.,
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# 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# This file is sourced from elf32.em and from ELF targets that use
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# generic.em.
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#
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cat >>e${EMULATION_NAME}.c <<EOF
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static void
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gld${EMULATION_NAME}_map_segments (bfd_boolean need_layout)
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{
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int tries = 10;
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do
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{
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if (need_layout)
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{
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lang_reset_memory_regions ();
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/* Resize the sections. */
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lang_size_sections (NULL, TRUE);
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/* Redo special stuff. */
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ldemul_after_allocation ();
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/* Do the assignments again. */
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lang_do_assignments ();
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need_layout = FALSE;
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}
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if (output_bfd->xvec->flavour == bfd_target_elf_flavour
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&& !link_info.relocatable)
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{
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bfd_size_type phdr_size;
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phdr_size = elf_tdata (output_bfd)->program_header_size;
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/* If we don't have user supplied phdrs, throw away any
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previous linker generated program headers. */
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if (lang_phdr_list == NULL)
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elf_tdata (output_bfd)->segment_map = NULL;
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if (!_bfd_elf_map_sections_to_segments (output_bfd, &link_info))
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einfo ("%F%P: map sections to segments failed: %E\n");
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if (phdr_size != elf_tdata (output_bfd)->program_header_size)
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{
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if (tries > 6)
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/* The first few times we allow any change to
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phdr_size . */
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need_layout = TRUE;
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else if (phdr_size < elf_tdata (output_bfd)->program_header_size)
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/* After that we only allow the size to grow. */
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need_layout = TRUE;
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else
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elf_tdata (output_bfd)->program_header_size = phdr_size;
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}
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}
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}
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while (need_layout && --tries);
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if (tries == 0)
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einfo (_("%P%F: looping in map_segments"));
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}
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EOF
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