mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-23 01:03:28 +08:00
28d5f67740
* ld.h (struct args_type): Rename 'relax' field to
'disable_target_specific_optimizations' and turn it into a
tri-state variable.
(RELAXATION_DISABLED_BY_DEFAULT): New macro.
(RELAXATION_DISABLED_BY_USER): New macro.
(RELAXATION_ENABLED): New macro.
(DISABLE_RELAXATION): New macro.
(ENABLE_RELAXATION): New macro.
* lexsup (enum option_values): Add OPTION_NO_RELAX.
(struct ld_options): Add --no-relax.
(parse_args): Handle OPTION_NO_RELAX. Use DISABLE_RELAXATION and
ENABLE_RELAXATION macros.
* ldlang.c (lang_relax_sections): Use RELAXATION_ENABLED macro.
(lang_process): Likewise.
* ldmain.c (main): Initialise
disable_target_specific_optimizations field.
(multiple_definition): Use RELAXATION_ENABLED macro.
* ld.texinfo: Document new command line option.
* emultempl/alphaelf.em: Remove --no-relax option.
(before_allocation): Test RELAXATION_DISABLED_BY_USER macro.
Use ENABLE_RELAXATION macro.
* emultempl/avrelf.em: (after_allocation): Test RELAXATION_ENABLED
macro.
* emultempl/cr16elf.em: Remove --no-relax option.
(before_allocation): Test RELAXATION_DISABLED_BY_USER macro.
Use ENABLE_RELAXATION macro.
* emultempl/crxelf.em: Remove --no-relax option.
(before_allocation): Test RELAXATION_DISABLED_BY_USER macro.
Use ENABLE_RELAXATION macro.
* emultempl/mmix-elfnmmo.em: (before_allocation): Use
ENABLE_RELAXATION macro.
* emultempl/needrelax.em: (before_allocation): Use
ENABLE_RELAXATION macro.
* emultempl/ppc32elf.em: (before_allocation): Test
RELAXATION_DISABLED_BY_DEFAULT macro. Use
ENABLE_RELAXATION macro.
* emultempl/sh64elf.em: (before_allocation): Test
RELAXATION_ENABLED macro. Use DISABLE_RELAXATION macro.
* emultempl/xtensaelf.em: Remove --no-relax option.
(before_allocation): Test RELAXATION_ENABLED macro.
Use ENABLE_RELAXATION macro.
117 lines
4.3 KiB
Plaintext
117 lines
4.3 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
|
|
# Copyright 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
|
|
# Free Software Foundation, Inc.
|
|
#
|
|
# This file is part of the GNU Binutils.
|
|
#
|
|
# 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
|
|
# MA 02110-1301, USA.
|
|
#
|
|
|
|
# This file is sourced from elf32.em and mmo.em, used to define
|
|
# MMIX-specific things common to ELF and MMO.
|
|
|
|
fragment <<EOF
|
|
#include "elf/mmix.h"
|
|
|
|
/* Set up handling of linker-allocated global registers. */
|
|
|
|
static void
|
|
mmix_before_allocation (void)
|
|
{
|
|
/* Call the default first. */
|
|
gld${EMULATION_NAME}_before_allocation ();
|
|
|
|
/* There's a needrelax.em which uses this ..._before_allocation-hook and
|
|
just has the statement below as payload. It's more of a hassle to
|
|
use that than to just include these two lines and take the
|
|
maintenance burden to keep them in sync. (Of course we lose the
|
|
maintenance burden of checking that it still does what we need.) */
|
|
|
|
/* Force -relax on (regardless of whether we're doing a relocatable
|
|
link). */
|
|
ENABLE_RELAXATION;
|
|
|
|
if (!_bfd_mmix_before_linker_allocation (link_info.output_bfd, &link_info))
|
|
einfo ("%X%P: Internal problems setting up section %s",
|
|
MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
|
|
}
|
|
|
|
/* We need to set the VMA of the .MMIX.reg_contents section when it has
|
|
been allocated, and produce the final settings for the linker-generated
|
|
GREGs. */
|
|
|
|
static void
|
|
mmix_after_allocation (void)
|
|
{
|
|
asection *sec;
|
|
bfd_signed_vma regvma;
|
|
|
|
gld${EMULATION_NAME}_after_allocation ();
|
|
|
|
/* If there's no register section, we don't need to do anything. On the
|
|
other hand, if there's a non-standard linker-script without a mapping
|
|
from MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME when that section is
|
|
present (as in the ld test "NOCROSSREFS 2"), that section (1) will be
|
|
orphaned; not inserted in MMIX_REG_CONTENTS_SECTION_NAME and (2) we
|
|
will not do the necessary preparations for those relocations that
|
|
caused it to be created. We'll SEGV from the latter error. The
|
|
former error in separation will result in a non-working binary, but
|
|
that's expected when you play tricks with linker scripts. The
|
|
"NOCROSSREFS 2" test does not run the output so it does not matter
|
|
there. */
|
|
sec = bfd_get_section_by_name (link_info.output_bfd,
|
|
MMIX_REG_CONTENTS_SECTION_NAME);
|
|
if (sec == NULL)
|
|
sec
|
|
= bfd_get_section_by_name (link_info.output_bfd,
|
|
MMIX_LD_ALLOCATED_REG_CONTENTS_SECTION_NAME);
|
|
if (sec == NULL)
|
|
return;
|
|
|
|
regvma = 256 * 8 - sec->size - 8;
|
|
|
|
/* If we start on a local register, we have too many global registers.
|
|
We treat this error as nonfatal (meaning processing will continue in
|
|
search for other errors), because it's a link error in the same way
|
|
as an undefined symbol. */
|
|
if (regvma < 32 * 8)
|
|
{
|
|
einfo ("%X%P: Too many global registers: %u, max 223\n",
|
|
(unsigned) sec->size / 8);
|
|
regvma = 32 * 8;
|
|
}
|
|
|
|
/* Set vma to correspond to first such register number * 8. */
|
|
bfd_set_section_vma (link_info.output_bfd, sec, (bfd_vma) regvma);
|
|
|
|
/* Simplify symbol output for the register section (without contents;
|
|
created for register symbols) by setting the output offset to 0.
|
|
This section is only present when there are register symbols. */
|
|
sec = bfd_get_section_by_name (link_info.output_bfd, MMIX_REG_SECTION_NAME);
|
|
if (sec != NULL)
|
|
bfd_set_section_vma (abfd, sec, 0);
|
|
|
|
if (!_bfd_mmix_after_linker_allocation (link_info.output_bfd, &link_info))
|
|
{
|
|
/* This is a fatal error; make einfo call not return. */
|
|
einfo ("%F%P: Can't finalize linker-allocated global registers\n");
|
|
}
|
|
}
|
|
EOF
|
|
|
|
LDEMUL_AFTER_ALLOCATION=mmix_after_allocation
|
|
LDEMUL_BEFORE_ALLOCATION=mmix_before_allocation
|