# This shell script emits a C file. -*- C -*-
-# Copyright 2003, 2005 Free Software Foundation, Inc.
+# Copyright 2003, 2005, 2007 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 powerpc32-elf
extern const bfd_target bfd_elf32_powerpc_vec;
extern const bfd_target bfd_elf32_powerpcle_vec;
+extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
+
+static inline int
+is_ppc_elf32_vec(const bfd_target * vec)
+{
+ return (vec == &bfd_elf32_powerpc_vec
+ || vec == &bfd_elf32_powerpc_vxworks_vec
+ || vec == &bfd_elf32_powerpcle_vec);
+}
/* Whether to run tls optimization. */
static int notlsopt = 0;
+/* Whether to emit symbols for stubs. */
+static int emit_stub_syms = 0;
+
+/* Chooses the correct place for .plt and .got. */
+static enum ppc_elf_plt_type plt_style = PLT_UNSET;
+static int old_got = 0;
+
+static void
+ppc_after_open (void)
+{
+ if (is_ppc_elf32_vec (link_info.hash->creator))
+ {
+ int new_plt;
+ int keep_new;
+ unsigned int num_plt;
+ unsigned int num_got;
+ lang_output_section_statement_type *os;
+ lang_output_section_statement_type *plt_os[2];
+ lang_output_section_statement_type *got_os[2];
+
+ emit_stub_syms |= link_info.emitrelocations;
+ new_plt = ppc_elf_select_plt_layout (output_bfd, &link_info, plt_style,
+ emit_stub_syms);
+ if (new_plt < 0)
+ einfo ("%X%P: select_plt_layout problem %E\n");
+
+ num_got = 0;
+ num_plt = 0;
+ for (os = &lang_output_section_statement.head->output_section_statement;
+ os != NULL;
+ os = os->next)
+ {
+ if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0)
+ {
+ if (num_plt < 2)
+ plt_os[num_plt] = os;
+ ++num_plt;
+ }
+ if (os->constraint == SPECIAL && strcmp (os->name, ".got") == 0)
+ {
+ if (num_got < 2)
+ got_os[num_got] = os;
+ ++num_got;
+ }
+ }
+
+ keep_new = new_plt == 1 ? 0 : -1;
+ if (num_plt == 2)
+ {
+ plt_os[0]->constraint = keep_new;
+ plt_os[1]->constraint = ~keep_new;
+ }
+ if (num_got == 2)
+ {
+ if (old_got)
+ keep_new = -1;
+ got_os[0]->constraint = keep_new;
+ got_os[1]->constraint = ~keep_new;
+ }
+ }
+
+ gld${EMULATION_NAME}_after_open ();
+}
+
static void
ppc_before_allocation (void)
{
- if (link_info.hash->creator == &bfd_elf32_powerpc_vec
- || link_info.hash->creator == &bfd_elf32_powerpcle_vec)
+ if (is_ppc_elf32_vec (link_info.hash->creator))
{
if (ppc_elf_tls_setup (output_bfd, &link_info) && !notlsopt)
{
gld${EMULATION_NAME}_before_allocation ();
}
-static void
-gld${EMULATION_NAME}_after_allocation (void)
+EOF
+
+if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then
+ cat >>e${EMULATION_NAME}.c <<EOF
+/* Special handling for embedded SPU executables. */
+extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *);
+static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *);
+
+static bfd_boolean
+ppc_recognized_file (lang_input_statement_type *entry)
{
- if (link_info.hash->creator == &bfd_elf32_powerpc_vec
- || link_info.hash->creator == &bfd_elf32_powerpcle_vec)
- {
- if (!ppc_elf_set_sdata_syms (output_bfd, &link_info))
- einfo ("%X%P: cannot set sdata syms %E\n");
- }
+ if (embedded_spu_file (entry, "-m32"))
+ return TRUE;
+
+ return gld${EMULATION_NAME}_load_symbols (entry);
}
EOF
+LDEMUL_RECOGNIZED_FILE=ppc_recognized_file
+fi
# Define some shell vars to insert bits of code into the standard elf
# parse_args and list_options functions.
#
PARSE_AND_LIST_PROLOGUE='
#define OPTION_NO_TLS_OPT 301
+#define OPTION_NEW_PLT 302
+#define OPTION_OLD_PLT 303
+#define OPTION_OLD_GOT 304
+#define OPTION_STUBSYMS 305
'
PARSE_AND_LIST_LONGOPTS='
+ { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS },
{ "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
+ { "secure-plt", no_argument, NULL, OPTION_NEW_PLT },
+ { "bss-plt", no_argument, NULL, OPTION_OLD_PLT },
+ { "sdata-got", no_argument, NULL, OPTION_OLD_GOT },
'
PARSE_AND_LIST_OPTIONS='
fprintf (file, _("\
- --no-tls-optimize Don'\''t try to optimize TLS accesses.\n"
+ --emit-stub-syms Label linker stubs with a symbol.\n\
+ --no-tls-optimize Don'\''t try to optimize TLS accesses.\n\
+ --secure-plt Use new-style PLT if possible.\n\
+ --bss-plt Force old-style BSS PLT.\n\
+ --sdata-got Force GOT location just before .sdata.\n"
));
'
PARSE_AND_LIST_ARGS_CASES='
+ case OPTION_STUBSYMS:
+ emit_stub_syms = 1;
+ break;
+
case OPTION_NO_TLS_OPT:
notlsopt = 1;
break;
+
+ case OPTION_NEW_PLT:
+ plt_style = PLT_NEW;
+ break;
+
+ case OPTION_OLD_PLT:
+ plt_style = PLT_OLD;
+ break;
+
+ case OPTION_OLD_GOT:
+ old_got = 1;
+ break;
'
# Put these extra ppc32elf routines in ld_${EMULATION_NAME}_emulation
#
+LDEMUL_AFTER_OPEN=ppc_after_open
LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
-LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
projects / deliverable / binutils-gdb.git / blobdiff