# This shell script emits a C file. -*- C -*-
-# Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
+# Copyright 2002, 2003, 2004, 2005, 2007, 2008
+# Free Software Foundation, Inc.
#
-# This file is part of GLD, the Gnu Linker.
+# 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 2 of the License, or
+# 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,
#
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
#
# This file is sourced from elf32.em, and defines extra powerpc64-elf
# specific routines.
#
-cat >>e${EMULATION_NAME}.c <<EOF
+fragment <<EOF
#include "ldctor.h"
#include "libbfd.h"
static int dotsyms = 1;
/* Whether to run tls optimization. */
-static int notlsopt = 0;
+static int no_tls_opt = 0;
+
+/* Whether to run opd optimization. */
+static int no_opd_opt = 0;
+
+/* Whether to run toc optimization. */
+static int no_toc_opt = 0;
+
+/* Whether to allow multiple toc sections. */
+static int no_multi_toc = 0;
/* Whether to emit symbols for stubs. */
static int emit_stub_syms = 0;
static asection *toc_section = 0;
+/* Whether to canonicalize .opd so that there are no overlapping
+ .opd entries. */
+static int non_overlapping_opd = 0;
/* This is called before the input files are opened. We create a new
fake input file to hold the stub sections. */
bfd_get_arch (output_bfd),
bfd_get_mach (output_bfd)))
{
- einfo ("%X%P: can not create BFD %E\n");
+ einfo ("%F%P: can not create BFD %E\n");
return;
}
+ stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
ldlang_add_file (stub_file);
ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info);
}
{
if (stub_file != NULL)
{
- if (!ppc64_elf_edit_opd (output_bfd, &link_info))
- {
- einfo ("%X%P: can not edit opd %E\n");
- return;
- }
+ if (!no_opd_opt
+ && !ppc64_elf_edit_opd (output_bfd, &link_info, non_overlapping_opd))
+ einfo ("%X%P: can not edit %s %E\n", "opd");
- if (ppc64_elf_tls_setup (output_bfd, &link_info) && !notlsopt)
+ if (ppc64_elf_tls_setup (output_bfd, &link_info) && !no_tls_opt)
{
/* Size the sections. This is premature, but we want to know the
TLS segment layout so that certain optimizations can be done. */
- lang_size_sections (stat_ptr->head, abs_output_section,
- &stat_ptr->head, 0, 0, NULL, TRUE);
+ expld.phase = lang_mark_phase_enum;
+ expld.dataseg.phase = exp_dataseg_none;
+ one_lang_size_sections_pass (NULL, TRUE);
if (!ppc64_elf_tls_optimize (output_bfd, &link_info))
- {
- einfo ("%X%P: TLS problem %E\n");
- return;
- }
+ einfo ("%X%P: TLS problem %E\n");
/* We must not cache anything from the preliminary sizing. */
- elf_tdata (output_bfd)->program_header_size = 0;
lang_reset_memory_regions ();
}
+
+ if (!no_toc_opt
+ && !link_info.relocatable
+ && !ppc64_elf_edit_toc (output_bfd, &link_info))
+ einfo ("%X%P: can not edit %s %E\n", "toc");
}
gld${EMULATION_NAME}_before_allocation ();
goto err_ret;
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
- | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP);
+ | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_KEEP);
if (!bfd_set_section_flags (stub_file->the_bfd, stub_sec, flags))
goto err_ret;
info.input_section = input_section;
lang_list_init (&info.add);
- lang_add_section (&info.add, stub_sec, os, stub_file);
+ lang_add_section (&info.add, stub_sec, os);
if (info.add.head == NULL)
goto err_ret;
/* If we have changed sizes of the stub sections, then we need
to recalculate all the section offsets. This may mean we need to
add even more stubs. */
- need_laying_out = 0;
-
- lang_reset_memory_regions ();
-
- /* Resize the sections. */
- lang_size_sections (stat_ptr->head, abs_output_section,
- &stat_ptr->head, 0, 0, NULL, TRUE);
-
- /* Recalculate TOC base. */
- ldemul_after_allocation ();
-
- /* Do the assignments again. */
- lang_do_assignments (stat_ptr->head, abs_output_section, NULL, 0);
+ gld${EMULATION_NAME}_map_segments (TRUE);
+ need_laying_out = -1;
}
static void
build_toc_list (lang_statement_union_type *statement)
{
- if (statement->header.type == lang_input_section_enum
- && !statement->input_section.ifile->just_syms_flag
- && (statement->input_section.section->flags & SEC_EXCLUDE) == 0
- && statement->input_section.section->output_section == toc_section)
- ppc64_elf_next_toc_section (&link_info, statement->input_section.section);
+ if (statement->header.type == lang_input_section_enum)
+ {
+ asection *i = statement->input_section.section;
+
+ if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
+ && (i->flags & SEC_EXCLUDE) == 0
+ && i->output_section == toc_section)
+ ppc64_elf_next_toc_section (&link_info, i);
+ }
}
static void
build_section_lists (lang_statement_union_type *statement)
{
- if (statement->header.type == lang_input_section_enum
- && !statement->input_section.ifile->just_syms_flag
- && (statement->input_section.section->flags & SEC_EXCLUDE) == 0
- && statement->input_section.section->output_section != NULL
- && statement->input_section.section->output_section->owner == output_bfd)
+ if (statement->header.type == lang_input_section_enum)
{
- if (!ppc64_elf_next_input_section (&link_info,
- statement->input_section.section))
- einfo ("%X%P: can not size stub section: %E\n");
+ asection *i = statement->input_section.section;
+
+ if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag
+ && (i->flags & SEC_EXCLUDE) == 0
+ && i->output_section != NULL
+ && i->output_section->owner == output_bfd)
+ {
+ if (!ppc64_elf_next_input_section (&link_info, i))
+ einfo ("%X%P: can not size stub section: %E\n");
+ }
}
}
stubs. */
if (stub_file != NULL && !link_info.relocatable)
{
- int ret = ppc64_elf_setup_section_lists (output_bfd, &link_info);
- if (ret != 0)
+ int ret = ppc64_elf_setup_section_lists (output_bfd, &link_info,
+ no_multi_toc);
+ if (ret < 0)
+ einfo ("%X%P: can not size stub section: %E\n");
+ else if (ret > 0)
{
- if (ret < 0)
- {
- einfo ("%X%P: can not size stub section: %E\n");
- return;
- }
-
toc_section = bfd_get_section_by_name (output_bfd, ".got");
if (toc_section != NULL)
lang_for_each_statement (build_toc_list);
group_size,
&ppc_add_stub_section,
&ppc_layout_sections_again))
- {
- einfo ("%X%P: can not size stub section: %E\n");
- return;
- }
+ einfo ("%X%P: can not size stub section: %E\n");
}
}
- if (need_laying_out)
- ppc_layout_sections_again ();
+ if (need_laying_out != -1)
+ gld${EMULATION_NAME}_map_segments (need_laying_out);
+
+ if (link_info.relocatable)
+ {
+ asection *toc = bfd_get_section_by_name (output_bfd, ".toc");
+ if (toc != NULL
+ && bfd_section_size (output_bfd, toc) > 0x10000)
+ einfo ("%X%P: TOC section size exceeds 64k\n");
+ }
if (stub_added)
{
char *msg = NULL;
char *line, *endline;
+ emit_stub_syms |= link_info.emitrelocations;
if (!ppc64_elf_build_stubs (emit_stub_syms, &link_info,
config.stats ? &msg : NULL))
einfo ("%X%P: can not build stubs: %E\n");
if (msg != NULL)
free (msg);
}
+
+ ppc64_elf_restore_symbols (&link_info);
+ finish_default ();
}
unsigned int len;
char *dot_pat;
- if (!dotsyms || entry->pattern[0] == '*' || entry->pattern[0] == '.')
+ if (!dotsyms
+ || (entry->pattern != NULL
+ && (entry->pattern[0] == '*' || entry->pattern[0] == '.')))
return entry;
dot_entry = xmalloc (sizeof *dot_entry);
*dot_entry = *entry;
dot_entry->next = entry;
- len = strlen (entry->pattern) + 2;
- dot_pat = xmalloc (len);
- dot_pat[0] = '.';
- memcpy (dot_pat + 1, entry->pattern, len - 1);
- dot_entry->pattern = dot_pat;
+ if (entry->pattern != NULL)
+ {
+ len = strlen (entry->pattern) + 2;
+ dot_pat = xmalloc (len);
+ dot_pat[0] = '.';
+ memcpy (dot_pat + 1, entry->pattern, len - 1);
+ dot_entry->pattern = dot_pat;
+ }
+ if (entry->symbol != NULL)
+ {
+ len = strlen (entry->symbol) + 2;
+ dot_pat = xmalloc (len);
+ dot_pat[0] = '.';
+ memcpy (dot_pat + 1, entry->symbol, len - 1);
+ dot_entry->symbol = dot_pat;
+ }
return dot_entry;
}
EOF
+if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
+ fragment <<EOF
+/* Special handling for embedded SPU executables. */
+extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
+static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);
+
+static bfd_boolean
+ppc64_recognized_file (lang_input_statement_type *entry)
+{
+ if (embedded_spu_file (entry, "-m64"))
+ return TRUE;
+
+ return gld${EMULATION_NAME}_load_symbols (entry);
+}
+EOF
+LDEMUL_RECOGNIZED_FILE=ppc64_recognized_file
+fi
+
# Define some shell vars to insert bits of code into the standard elf
# parse_args and list_options functions.
#
#define OPTION_DOTSYMS (OPTION_STUBSYMS + 1)
#define OPTION_NO_DOTSYMS (OPTION_DOTSYMS + 1)
#define OPTION_NO_TLS_OPT (OPTION_NO_DOTSYMS + 1)
+#define OPTION_NO_OPD_OPT (OPTION_NO_TLS_OPT + 1)
+#define OPTION_NO_TOC_OPT (OPTION_NO_OPD_OPT + 1)
+#define OPTION_NO_MULTI_TOC (OPTION_NO_TOC_OPT + 1)
+#define OPTION_NON_OVERLAPPING_OPD (OPTION_NO_MULTI_TOC + 1)
'
PARSE_AND_LIST_LONGOPTS='
{ "dotsyms", no_argument, NULL, OPTION_DOTSYMS },
{ "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS },
{ "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
+ { "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT },
+ { "no-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT },
+ { "no-multi-toc", no_argument, NULL, OPTION_NO_MULTI_TOC },
+ { "non-overlapping-opd", no_argument, NULL, OPTION_NON_OVERLAPPING_OPD },
'
PARSE_AND_LIST_OPTIONS='
fprintf (file, _("\
- --stub-group-size=N Maximum size of a group of input sections that can be\n\
- handled by one stub section. A negative value\n\
- locates all stubs before their branches (with a\n\
- group size of -N), while a positive value allows\n\
- two groups of input sections, one before, and one\n\
- after each stub section. Values of +/-1 indicate\n\
- the linker should choose suitable defaults.\n"
+ --stub-group-size=N Maximum size of a group of input sections that\n\
+ can be handled by one stub section. A negative\n\
+ value locates all stubs before their branches\n\
+ (with a group size of -N), while a positive\n\
+ value allows two groups of input sections, one\n\
+ before, and one after each stub section.\n\
+ Values of +/-1 indicate the linker should\n\
+ choose suitable defaults.\n"
+ ));
+ fprintf (file, _("\
+ --emit-stub-syms Label linker stubs with a symbol.\n"
));
fprintf (file, _("\
- --emit-stub-syms Label linker stubs with a symbol.\n"
+ --dotsyms For every version pattern \"foo\" in a version\n\
+ script, add \".foo\" so that function code\n\
+ symbols are treated the same as function\n\
+ descriptor symbols. Defaults to on.\n"
));
fprintf (file, _("\
- --dotsyms For every version pattern \"foo\" in a version script,\n\
- add \".foo\" so that function code symbols are\n\
- treated the same as function descriptor symbols.\n\
- Defaults to on.\n"
+ --no-dotsyms Don'\''t do anything special in version scripts.\n"
));
fprintf (file, _("\
- --no-dotsyms Don'\''t do anything special in version scripts.\n"
+ --no-tls-optimize Don'\''t try to optimize TLS accesses.\n"
));
fprintf (file, _("\
- --no-tls-optimize Don'\''t try to optimize TLS accesses.\n"
+ --no-opd-optimize Don'\''t optimize the OPD section.\n"
+ ));
+ fprintf (file, _("\
+ --no-toc-optimize Don'\''t optimize the TOC section.\n"
+ ));
+ fprintf (file, _("\
+ --no-multi-toc Disallow automatic multiple toc sections.\n"
+ ));
+ fprintf (file, _("\
+ --non-overlapping-opd Canonicalize .opd, so that there are no\n\
+ overlapping .opd entries.\n"
));
'
break;
case OPTION_NO_TLS_OPT:
- notlsopt = 1;
+ no_tls_opt = 1;
+ break;
+
+ case OPTION_NO_OPD_OPT:
+ no_opd_opt = 1;
+ break;
+
+ case OPTION_NO_TOC_OPT:
+ no_toc_opt = 1;
+ break;
+
+ case OPTION_NO_MULTI_TOC:
+ no_multi_toc = 1;
+ break;
+
+ case OPTION_NON_OVERLAPPING_OPD:
+ non_overlapping_opd = 1;
break;
'
projects / binutils-gdb.git / blobdiff