/* ldemul.c -- clearing house for ld emulation states
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/* ldemul.c -- clearing house for ld emulation states
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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2001, 2002, 2003, 2005, 2007, 2008, 2009
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2001, 2002, 2003, 2005, 2007, 2008, 2009
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of the GNU Binutils.
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This file is part of the GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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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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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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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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(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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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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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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "getopt.h"
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#include "getopt.h"
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#include "bfdlink.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "ld.h"
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#include "ldmisc.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldlang.h"
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#include "ldfile.h"
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#include "ldfile.h"
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#include "ldemul.h"
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#include "ldemul.h"
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#include "ldmain.h"
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#include "ldmain.h"
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#include "ldemul-list.h"
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#include "ldemul-list.h"
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static ld_emulation_xfer_type *ld_emulation;
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static ld_emulation_xfer_type *ld_emulation;
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void
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void
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ldemul_hll (char *name)
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ldemul_hll (char *name)
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{
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{
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ld_emulation->hll (name);
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ld_emulation->hll (name);
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}
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}
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void
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void
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ldemul_syslib (char *name)
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ldemul_syslib (char *name)
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{
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{
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ld_emulation->syslib (name);
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ld_emulation->syslib (name);
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}
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}
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void
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void
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ldemul_after_parse (void)
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ldemul_after_parse (void)
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{
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{
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ld_emulation->after_parse ();
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ld_emulation->after_parse ();
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}
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}
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void
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void
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ldemul_before_parse (void)
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ldemul_before_parse (void)
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{
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{
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ld_emulation->before_parse ();
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ld_emulation->before_parse ();
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}
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}
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void
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void
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ldemul_after_open (void)
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ldemul_after_open (void)
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{
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{
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ld_emulation->after_open ();
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ld_emulation->after_open ();
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}
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}
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void
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void
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ldemul_after_allocation (void)
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ldemul_after_allocation (void)
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{
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{
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ld_emulation->after_allocation ();
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ld_emulation->after_allocation ();
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}
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}
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void
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void
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ldemul_before_allocation (void)
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ldemul_before_allocation (void)
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{
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{
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ld_emulation->before_allocation ();
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ld_emulation->before_allocation ();
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}
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}
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void
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void
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ldemul_set_output_arch (void)
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ldemul_set_output_arch (void)
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{
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{
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ld_emulation->set_output_arch ();
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ld_emulation->set_output_arch ();
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}
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}
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void
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void
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ldemul_finish (void)
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ldemul_finish (void)
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{
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{
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ld_emulation->finish ();
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ld_emulation->finish ();
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}
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}
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void
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void
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ldemul_set_symbols (void)
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ldemul_set_symbols (void)
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{
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{
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if (ld_emulation->set_symbols)
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if (ld_emulation->set_symbols)
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ld_emulation->set_symbols ();
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ld_emulation->set_symbols ();
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}
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}
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void
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void
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ldemul_create_output_section_statements (void)
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ldemul_create_output_section_statements (void)
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{
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{
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if (ld_emulation->create_output_section_statements)
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if (ld_emulation->create_output_section_statements)
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ld_emulation->create_output_section_statements ();
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ld_emulation->create_output_section_statements ();
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}
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}
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char *
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char *
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ldemul_get_script (int *isfile)
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ldemul_get_script (int *isfile)
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{
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{
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return ld_emulation->get_script (isfile);
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return ld_emulation->get_script (isfile);
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}
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}
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bfd_boolean
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bfd_boolean
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ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search,
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ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search,
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lang_input_statement_type *entry)
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lang_input_statement_type *entry)
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{
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{
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if (ld_emulation->open_dynamic_archive)
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if (ld_emulation->open_dynamic_archive)
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return (*ld_emulation->open_dynamic_archive) (arch, search, entry);
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return (*ld_emulation->open_dynamic_archive) (arch, search, entry);
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return FALSE;
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return FALSE;
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}
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}
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lang_output_section_statement_type *
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lang_output_section_statement_type *
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ldemul_place_orphan (asection *s, const char *name, int constraint)
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ldemul_place_orphan (asection *s, const char *name, int constraint)
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{
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{
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if (ld_emulation->place_orphan)
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if (ld_emulation->place_orphan)
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return (*ld_emulation->place_orphan) (s, name, constraint);
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return (*ld_emulation->place_orphan) (s, name, constraint);
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return NULL;
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return NULL;
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}
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}
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void
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void
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ldemul_add_options (int ns, char **shortopts, int nl,
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ldemul_add_options (int ns, char **shortopts, int nl,
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struct option **longopts, int nrl,
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struct option **longopts, int nrl,
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struct option **really_longopts)
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struct option **really_longopts)
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{
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{
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if (ld_emulation->add_options)
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if (ld_emulation->add_options)
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(*ld_emulation->add_options) (ns, shortopts, nl, longopts,
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(*ld_emulation->add_options) (ns, shortopts, nl, longopts,
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nrl, really_longopts);
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nrl, really_longopts);
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}
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}
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bfd_boolean
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bfd_boolean
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ldemul_handle_option (int optc)
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ldemul_handle_option (int optc)
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{
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{
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if (ld_emulation->handle_option)
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if (ld_emulation->handle_option)
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return (*ld_emulation->handle_option) (optc);
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return (*ld_emulation->handle_option) (optc);
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return FALSE;
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return FALSE;
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}
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}
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bfd_boolean
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bfd_boolean
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ldemul_parse_args (int argc, char **argv)
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ldemul_parse_args (int argc, char **argv)
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{
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{
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/* Try and use the emulation parser if there is one. */
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/* Try and use the emulation parser if there is one. */
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if (ld_emulation->parse_args)
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if (ld_emulation->parse_args)
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return (*ld_emulation->parse_args) (argc, argv);
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return (*ld_emulation->parse_args) (argc, argv);
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return FALSE;
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return FALSE;
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}
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}
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/* Let the emulation code handle an unrecognized file. */
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/* Let the emulation code handle an unrecognized file. */
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bfd_boolean
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bfd_boolean
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ldemul_unrecognized_file (lang_input_statement_type *entry)
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ldemul_unrecognized_file (lang_input_statement_type *entry)
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{
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{
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if (ld_emulation->unrecognized_file)
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if (ld_emulation->unrecognized_file)
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return (*ld_emulation->unrecognized_file) (entry);
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return (*ld_emulation->unrecognized_file) (entry);
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return FALSE;
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return FALSE;
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}
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}
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/* Let the emulation code handle a recognized file. */
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/* Let the emulation code handle a recognized file. */
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bfd_boolean
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bfd_boolean
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ldemul_recognized_file (lang_input_statement_type *entry)
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ldemul_recognized_file (lang_input_statement_type *entry)
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{
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{
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if (ld_emulation->recognized_file)
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if (ld_emulation->recognized_file)
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return (*ld_emulation->recognized_file) (entry);
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return (*ld_emulation->recognized_file) (entry);
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return FALSE;
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return FALSE;
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}
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}
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char *
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char *
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ldemul_choose_target (int argc, char **argv)
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ldemul_choose_target (int argc, char **argv)
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{
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{
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return ld_emulation->choose_target (argc, argv);
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return ld_emulation->choose_target (argc, argv);
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}
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}
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/* The default choose_target function. */
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/* The default choose_target function. */
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char *
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char *
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ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
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ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
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{
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{
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char *from_outside = getenv (TARGET_ENVIRON);
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char *from_outside = getenv (TARGET_ENVIRON);
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if (from_outside != (char *) NULL)
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if (from_outside != (char *) NULL)
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return from_outside;
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return from_outside;
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return ld_emulation->target_name;
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return ld_emulation->target_name;
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}
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}
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/* If the entry point was not specified as an address, then add the
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/* If the entry point was not specified as an address, then add the
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symbol as undefined. This will cause ld to extract an archive
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symbol as undefined. This will cause ld to extract an archive
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element defining the entry if ld is linking against such an archive.
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element defining the entry if ld is linking against such an archive.
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We don't do this when generating shared libraries unless given -e
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We don't do this when generating shared libraries unless given -e
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on the command line, because most shared libs are not designed to
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on the command line, because most shared libs are not designed to
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be run as an executable. However, some are, eg. glibc ld.so and
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be run as an executable. However, some are, eg. glibc ld.so and
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may rely on the default linker script supplying ENTRY. So we can't
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may rely on the default linker script supplying ENTRY. So we can't
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remove the ENTRY from the script, but would rather not insert
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remove the ENTRY from the script, but would rather not insert
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undefined _start syms. */
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undefined _start syms. */
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void
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void
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after_parse_default (void)
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after_parse_default (void)
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{
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{
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if (entry_symbol.name != NULL
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if (entry_symbol.name != NULL
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&& (link_info.executable || entry_from_cmdline))
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&& (link_info.executable || entry_from_cmdline))
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{
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{
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bfd_boolean is_vma = FALSE;
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bfd_boolean is_vma = FALSE;
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if (entry_from_cmdline)
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if (entry_from_cmdline)
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{
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{
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const char *send;
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const char *send;
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bfd_scan_vma (entry_symbol.name, &send, 0);
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bfd_scan_vma (entry_symbol.name, &send, 0);
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is_vma = *send == '\0';
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is_vma = *send == '\0';
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}
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}
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if (!is_vma)
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if (!is_vma)
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ldlang_add_undef (entry_symbol.name);
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ldlang_add_undef (entry_symbol.name);
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}
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}
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}
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}
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void
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void
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after_open_default (void)
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after_open_default (void)
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{
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{
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}
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}
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void
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void
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after_allocation_default (void)
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after_allocation_default (void)
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{
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{
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lang_relax_sections (FALSE);
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lang_relax_sections (FALSE);
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}
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}
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void
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void
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before_allocation_default (void)
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before_allocation_default (void)
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{
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{
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if (!link_info.relocatable)
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if (!link_info.relocatable)
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strip_excluded_output_sections ();
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strip_excluded_output_sections ();
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}
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}
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void
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void
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finish_default (void)
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finish_default (void)
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{
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{
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if (!link_info.relocatable)
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if (!link_info.relocatable)
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_bfd_fix_excluded_sec_syms (link_info.output_bfd, &link_info);
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_bfd_fix_excluded_sec_syms (link_info.output_bfd, &link_info);
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}
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}
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void
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void
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set_output_arch_default (void)
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set_output_arch_default (void)
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{
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{
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/* Set the output architecture and machine if possible. */
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/* Set the output architecture and machine if possible. */
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bfd_set_arch_mach (link_info.output_bfd,
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bfd_set_arch_mach (link_info.output_bfd,
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ldfile_output_architecture, ldfile_output_machine);
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ldfile_output_architecture, ldfile_output_machine);
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bfd_emul_set_maxpagesize (output_target, config.maxpagesize);
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bfd_emul_set_maxpagesize (output_target, config.maxpagesize);
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bfd_emul_set_commonpagesize (output_target, config.commonpagesize);
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bfd_emul_set_commonpagesize (output_target, config.commonpagesize);
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}
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}
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void
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void
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syslib_default (char *ignore ATTRIBUTE_UNUSED)
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syslib_default (char *ignore ATTRIBUTE_UNUSED)
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{
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{
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info_msg (_("%S SYSLIB ignored\n"));
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info_msg (_("%S SYSLIB ignored\n"));
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}
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}
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void
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void
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hll_default (char *ignore ATTRIBUTE_UNUSED)
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hll_default (char *ignore ATTRIBUTE_UNUSED)
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{
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{
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info_msg (_("%S HLL ignored\n"));
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info_msg (_("%S HLL ignored\n"));
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}
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}
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ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST };
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ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST };
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void
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void
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ldemul_choose_mode (char *target)
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ldemul_choose_mode (char *target)
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{
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{
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ld_emulation_xfer_type **eptr = ld_emulations;
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ld_emulation_xfer_type **eptr = ld_emulations;
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/* Ignore "gld" prefix. */
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/* Ignore "gld" prefix. */
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if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd')
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if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd')
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target += 3;
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target += 3;
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for (; *eptr; eptr++)
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for (; *eptr; eptr++)
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{
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{
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if (strcmp (target, (*eptr)->emulation_name) == 0)
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if (strcmp (target, (*eptr)->emulation_name) == 0)
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{
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{
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ld_emulation = *eptr;
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ld_emulation = *eptr;
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return;
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return;
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}
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}
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}
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}
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einfo (_("%P: unrecognised emulation mode: %s\n"), target);
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einfo (_("%P: unrecognised emulation mode: %s\n"), target);
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einfo (_("Supported emulations: "));
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einfo (_("Supported emulations: "));
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ldemul_list_emulations (stderr);
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ldemul_list_emulations (stderr);
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einfo ("%F\n");
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einfo ("%F\n");
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}
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}
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void
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void
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ldemul_list_emulations (FILE *f)
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ldemul_list_emulations (FILE *f)
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{
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{
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ld_emulation_xfer_type **eptr = ld_emulations;
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ld_emulation_xfer_type **eptr = ld_emulations;
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bfd_boolean first = TRUE;
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bfd_boolean first = TRUE;
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|
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for (; *eptr; eptr++)
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for (; *eptr; eptr++)
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{
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{
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if (first)
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if (first)
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first = FALSE;
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first = FALSE;
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else
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else
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fprintf (f, " ");
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fprintf (f, " ");
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fprintf (f, "%s", (*eptr)->emulation_name);
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fprintf (f, "%s", (*eptr)->emulation_name);
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}
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}
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}
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}
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void
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void
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ldemul_list_emulation_options (FILE *f)
|
ldemul_list_emulation_options (FILE *f)
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{
|
{
|
ld_emulation_xfer_type **eptr;
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ld_emulation_xfer_type **eptr;
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int options_found = 0;
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int options_found = 0;
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|
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for (eptr = ld_emulations; *eptr; eptr++)
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for (eptr = ld_emulations; *eptr; eptr++)
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{
|
{
|
ld_emulation_xfer_type *emul = *eptr;
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ld_emulation_xfer_type *emul = *eptr;
|
|
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if (emul->list_options)
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if (emul->list_options)
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{
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{
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fprintf (f, "%s: \n", emul->emulation_name);
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fprintf (f, "%s: \n", emul->emulation_name);
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|
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emul->list_options (f);
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emul->list_options (f);
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|
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options_found = 1;
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options_found = 1;
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}
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}
|
}
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}
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|
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if (! options_found)
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if (! options_found)
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fprintf (f, _(" no emulation specific options.\n"));
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fprintf (f, _(" no emulation specific options.\n"));
|
}
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}
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int
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int
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ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry)
|
ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry)
|
{
|
{
|
if (ld_emulation->find_potential_libraries)
|
if (ld_emulation->find_potential_libraries)
|
return ld_emulation->find_potential_libraries (name, entry);
|
return ld_emulation->find_potential_libraries (name, entry);
|
|
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return 0;
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return 0;
|
}
|
}
|
|
|
struct bfd_elf_version_expr *
|
struct bfd_elf_version_expr *
|
ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry)
|
ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry)
|
{
|
{
|
if (ld_emulation->new_vers_pattern)
|
if (ld_emulation->new_vers_pattern)
|
entry = (*ld_emulation->new_vers_pattern) (entry);
|
entry = (*ld_emulation->new_vers_pattern) (entry);
|
return entry;
|
return entry;
|
}
|
}
|
|
|
