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5fd104addf
ld silently accepts -z relro and -z norelro for targets that lack the
necessary GNU_RELRO support. This patch makes those targets emit a
warning instead, and adds testsuite infrastructure to detect when
relro is unsupported.
binutils/
* testsuite/config/default.exp (ld_elf_shared_opt): Don't set.
* testsuite/lib/binutils-common.exp (check_relro_support): New proc.
(run_dump_test): Use check_relro_support to decide whether to pass
extra ld option "-z norelro".
ld/
* emultempl/elf.em (gld${EMULATION_NAME}_handle_option): Omit
-z relro and -z norelro when target support for GNU_RELRO is lacking.
(gld${EMULATION_NAME}_before_parse): Ignore RELRO default too.
* emultempl/aarch64elf.em (gld${EMULATION_NAME}_before_parse): Ignore
RELRO default when target support for GNU_RELRO is lacking.
* emultempl/armelf.em (gld${EMULATION_NAME}_before_parse): Likewise.
* emultempl/linux.em (gld${EMULATION_NAME}_before_parse): Likewise.
* emultempl/scoreelf.em (gld${EMULATION_NAME}_before_parse): Likewise.
* testsuite/config/default.exp (ld_elf_shared_opt): Don't set.
* testsuite/ld-elf/pr16322.d: xfail when no relro support.
* testsuite/ld-elf/pr22393-1a.d: Likewise.
* testsuite/ld-elf/pr22393-1b.d: Likewise.
* testsuite/ld-elf/shared.exp (pr20995-2.so, pr20995-2): Likewise.
* testsuite/lib/ld-lib.exp (run_ld_link_tests): Use check_relro_support
to decide whether to pass extra ld option "-z norelro".
87 lines
2.8 KiB
Plaintext
87 lines
2.8 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# Copyright (C) 2006-2020 Free Software Foundation, Inc.
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# Contributed by:
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# Brain.lin (brain.lin@sunplusct.com)
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# Mei Ligang (ligang@sunnorth.com.cn)
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# Pei-Lin Tsai (pltsai@sunplus.com)
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# This file is part of the GNU Binutils.
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#
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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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#
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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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#
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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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#
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# This file is sourced from elf.em, and defines extra score-elf
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# specific routines.
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#
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fragment <<EOF
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#include "elf32-score.h"
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static void
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gld${EMULATION_NAME}_before_parse (void)
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{
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#ifndef TARGET_ /* I.e., if not generic. */
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ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
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#endif /* not TARGET_ */
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input_flags.dynamic = ${DYNAMIC_LINK-TRUE};
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config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
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config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo TRUE ; else echo FALSE ; fi`;
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link_info.check_relocs_after_open_input = TRUE;
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EOF
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if test -n "$COMMONPAGESIZE"; then
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fragment <<EOF
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link_info.relro = DEFAULT_LD_Z_RELRO;
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EOF
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fi
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fragment <<EOF
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}
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static void
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score_elf_after_open (void)
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{
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if (strstr (bfd_get_target (link_info.output_bfd), "score") == NULL)
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{
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/* The score backend needs special fields in the output hash structure.
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These will only be created if the output format is an score format,
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hence we do not support linking and changing output formats at the
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same time. Use a link followed by objcopy to change output formats. */
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einfo (_("%F%P: error: cannot change output format "
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"whilst linking %s binaries\n"), "S+core");
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return;
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}
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/* Call the standard elf routine. */
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gld${EMULATION_NAME}_after_open ();
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}
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EOF
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# Define some shell vars to insert bits of code into the standard elf
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# parse_args and list_options functions.
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#
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PARSE_AND_LIST_PROLOGUE=''
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PARSE_AND_LIST_SHORTOPTS=
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PARSE_AND_LIST_LONGOPTS=''
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PARSE_AND_LIST_OPTIONS=''
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PARSE_AND_LIST_ARGS_CASES=''
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# We have our own after_open and before_allocation functions, but they call
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# the standard routines, so give them a different name.
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LDEMUL_AFTER_OPEN=score_elf_after_open
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# Replace the elf before_parse function with our own.
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LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse
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