487b39dfdd
(ctors_sections_in_init_array): New static variable. (Layout::is_ctors_in_init_array): New function. (Layout::layout): Add entry to ctors_sections_in_init_array if appropriate. * layout.h (class Layout): Declare is_ctors_in_init_array. * reloc.cc (Sized_relobj_file::do_relocate): Call reverse_words if is_ctors_reverse_view is set. (Sized_relobj_file::write_sections): Add layout parameter. Change all callers. Set is_ctors_reverse_view field of View_size. (Sized_relobj_file::reverse_words): New function. * object.h (Sized_relobj_file::View_size): Add is_ctors_reverse_view field. (class Sized_relobj_file): Update declarations. * testsuite/initpri3.c: New test. * testsuite/Makefile.am: (check_PROGRAMS): Add initpri3a and initpri3b. (initpri3a_SOURCES, initpri3a_DEPENDENCIES): New variables. (initpri3a_LDFLAGS, initpri3a_LDADD): New variables. (initpri3b_SOURCES, initpri3b_DEPENDENCIES): New variables. (initpri3b_LDFLAGS, initpri3b_LDADD): New variables. * testsuite/Makefile.in: Rebuild.
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/* initpri3.c -- test ctor odering when using init_array.
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Copyright 2011 Free Software Foundation, Inc.
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Written by Ian Lance Taylor <iant@google.com>.
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This file is part of gold.
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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 3 of the License, or
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(at your option) any later version.
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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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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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* This tests that the linker correctly orders .ctor entries when
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putting them into .init_array, as is the default. */
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#include <assert.h>
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int i = 1;
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static void
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ctor1 (void)
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{
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assert (i == 1);
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i = 2;
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}
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static void
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ctor2 (void)
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{
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assert (i == 2);
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i = 3;
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}
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static void
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dtor1 (void)
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{
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assert (i == 3);
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i = 2;
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}
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static void
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dtor2 (void)
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{
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assert (i == 2);
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i = 1;
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}
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/* The .ctors section is run in reverse order, the .dtors section in
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run in forward order. We give these arrays the "aligned" attribute
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because the x86_64 ABI would otherwise give them a 16-byte
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alignment, which may leave a hole in the section. */
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void (*ctors[]) (void)
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__attribute__ ((aligned (4), section (".ctors"))) = {
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ctor2,
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ctor1
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};
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void (*dtors[]) (void)
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__attribute__ ((aligned (4), section (".dtors"))) = {
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dtor1,
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dtor2
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};
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int
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main (void)
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{
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assert (i == 3);
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return 0;
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}
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