106 lines
3.7 KiB
Plaintext
106 lines
3.7 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# Copyright 2001, 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 mmo.em, used to define
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# MMIX-specific things common to ELF and MMO.
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cat >>e${EMULATION_NAME}.c <<EOF
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#include "elf/mmix.h"
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static void mmix_before_allocation PARAMS ((void));
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static void mmix_after_allocation PARAMS ((void));
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/* Set up handling of linker-allocated global registers. */
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static void
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mmix_before_allocation ()
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{
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/* Call the default first. */
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gld${EMULATION_NAME}_before_allocation ();
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/* There's a needrelax.em which uses this ..._before_allocation-hook and
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just has the statement below as payload. It's more of a hassle to
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use that than to just include these two lines and take the
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maintenance burden to keep them in sync. (Of course we lose the
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maintenance burden of checking that it still does what we need.) */
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/* Force -relax on if not doing a relocatable link. */
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if (! link_info.relocateable)
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command_line.relax = true;
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if (!_bfd_mmix_prepare_linker_allocated_gregs (output_bfd, &link_info))
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einfo ("%X%P: Internal problems setting up section %s",
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MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
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}
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/* We need to set the VMA of the .MMIX.reg_contents section when it has
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been allocated, and produce the final settings for the linker-generated
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GREGs. */
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static void
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mmix_after_allocation ()
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{
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asection *sec
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= bfd_get_section_by_name (output_bfd, MMIX_REG_CONTENTS_SECTION_NAME);
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bfd_signed_vma regvma;
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/* If there's no register section, we don't need to do anything. */
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if (sec == NULL)
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return;
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regvma = 256 * 8 - sec->_raw_size - 8;
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/* If we start on a local register, we have too many global registers. */
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if (regvma < 32 * 8)
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einfo ("%X%P: Too many global registers: %u, max 223\n",
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(unsigned) sec->_raw_size / 8);
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/* Set vma to correspond to first such register number * 8. */
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bfd_set_section_vma (output_bfd, sec, (bfd_vma) regvma);
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/* ??? Why isn't the section size (_cooked_size) set? Doesn't it get
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set regardless of presence of relocations? */
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if (sec->_cooked_size == 0
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&& ! bfd_set_section_size (output_bfd, sec, sec->_raw_size))
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{
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einfo ("%X%P: Can't set section %s size to %u\n",
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MMIX_REG_CONTENTS_SECTION_NAME, (unsigned) sec->_raw_size);
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return;
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}
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/* Simplify symbol output for the register section (without contents;
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created for register symbols) by setting the output offset to 0.
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This section is only present when there are register symbols. */
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sec = bfd_get_section_by_name (output_bfd, MMIX_REG_SECTION_NAME);
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if (sec != NULL)
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bfd_set_section_vma (abfd, sec, 0);
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if (!_bfd_mmix_finalize_linker_allocated_gregs (output_bfd, &link_info))
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{
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einfo ("%X%P: Can't finalize linker-allocated global registers\n");
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/* In case stuff is added after this conditional. */
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return;
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}
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}
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EOF
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LDEMUL_AFTER_ALLOCATION=mmix_after_allocation
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LDEMUL_BEFORE_ALLOCATION=mmix_before_allocation
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