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--export-dynamic-symbol-list is like a dynamic list, but without the symbolic property for unspecified symbols. When creating an executable, --export-dynamic-symbol-list is treated like --dynamic-list. When creating a shared library, it is treated like --dynamic-list if -Bsymbolic or --dynamic-list are used, otherwise, it is ignored, so that references to matched symbols will not be bound to the definitions within the shared library. PR ld/25910 * NEWS: Mention --export-dynamic-symbol[-list]. * ld.texi: Document --export-dynamic-symbol[-list]. * ldgram.y: Pass current_dynamic_list_p to lang_append_dynamic_list. * ldlang.c (current_dynamic_list_p): New. (ang_append_dynamic_list): Updated to take a pointer to struct bfd_elf_dynamic_list * argument instead of using link_info.dynamic_list. (lang_append_dynamic_list_cpp_typeinfo): Pass &link_info.dynamic_list to ang_append_dynamic_list. (lang_append_dynamic_list_cpp_new): Likewise. * ldlang.h (current_dynamic_list_p): New. (lang_append_dynamic_list): Add a pointer to struct bfd_elf_dynamic_list * argument. * ldlex.h (option_values): Add OPTION_EXPORT_DYNAMIC_SYMBOL and OPTION_EXPORT_DYNAMIC_SYMBOL_LIST. * lexsup.c (ld_options): Add entries for OPTION_EXPORT_DYNAMIC_SYMBOL and OPTION_EXPORT_DYNAMIC_SYMBOL_LIST. (parse_args): Handle --export-dynamic-symbol and --export-dynamic-symbol-list. * testsuite/ld-dynamic/export-dynamic-symbol-1.d: New. * testsuite/ld-dynamic/export-dynamic-symbol-2.d: New. * testsuite/ld-dynamic/export-dynamic-symbol-glob.d: New. * testsuite/ld-dynamic/export-dynamic-symbol-list-1.d: New. * testsuite/ld-dynamic/export-dynamic-symbol-list-2.d: New. * testsuite/ld-dynamic/export-dynamic-symbol-list-glob.d: New. * testsuite/ld-dynamic/export-dynamic-symbol.exp: New. * testsuite/ld-dynamic/export-dynamic-symbol.s: New. * testsuite/ld-dynamic/foo-bar.list: New. * testsuite/ld-dynamic/foo.list: New. * testsuite/ld-dynamic/foo.s: New. * testsuite/ld-dynamic/fstar.list: New. * testsuite/ld-elf/dlempty.list: New. * testsuite/ld-elf/shared.exp: Add tests for --export-dynamic-symbol and --export-dynamic-symbol-list.binutils-2_35-branch
Fangrui Song
6 years ago
committed by
H.J. Lu
H.J. Lu
22 changed files with 341 additions and 9 deletions
@ -0,0 +1,9 @@ |
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#name: --export-dynamic-symbol foo archive |
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#source: export-dynamic-symbol.s |
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#ld: -pie --export-dynamic-symbol foo tmpdir/libpr25910.a |
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#nm: -n |
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#failif |
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#... |
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[0-9a-f]+ T +foo |
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#... |
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#name: -u --export-dynamic-symbol foo archive |
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#source: export-dynamic-symbol.s |
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#ld: -pie -u foo --export-dynamic-symbol foo --export-dynamic-symbol=bar tmpdir/libpr25910.a |
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#nm: -D |
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#... |
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[0-9a-f]+ T +bar |
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[0-9a-f]+ T +foo |
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#... |
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#name: -u --export-dynamic-symbol "f*" archive |
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#source: export-dynamic-symbol.s |
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#ld: -pie -u foo --export-dynamic-symbol "f*" tmpdir/libpr25910.a |
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#nm: -D |
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#... |
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[0-9a-f]+ T +foo |
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#... |
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@ -0,0 +1,9 @@ |
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#name: --export-dynamic-symbol-list foo archive |
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#source: export-dynamic-symbol.s |
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#ld: -pie --export-dynamic-symbol-list foo.list tmpdir/libpr25910.a |
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#nm: -n |
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#failif |
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#... |
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[0-9a-f]+ T +foo |
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#... |
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#name: -u --export-dynamic-symbol-list foo bar archive |
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#source: export-dynamic-symbol.s |
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#ld: -pie -u foo --export-dynamic-symbol-list foo-bar.list tmpdir/libpr25910.a |
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#nm: -D |
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#... |
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[0-9a-f]+ T +bar |
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[0-9a-f]+ T +foo |
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#... |
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#name: -u --export-dynamic-symbol-list fstar archive |
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#source: export-dynamic-symbol.s |
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#ld: -pie -u foo --export-dynamic-symbol-list fstar.list tmpdir/libpr25910.a |
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#nm: -D |
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#... |
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[0-9a-f]+ T +foo |
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#... |
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# Expect script for ld --export-dynamic-symbol tests |
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# Copyright (C) 2020 Free Software Foundation, Inc. |
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# |
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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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if ![is_elf_format] { |
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return |
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} |
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# Skip targets where -shared is not supported |
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if ![check_shared_lib_support] { |
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return |
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} |
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set old_ASFLAGS $ASFLAGS |
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# These targets require extra GAS options when building code for shared |
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# libraries. |
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if [istarget "nds32*-*"] { |
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append ASFLAGS " -mpic" |
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} |
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if [istarget "tic6x-*-*"] { |
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append ASFLAGS " -mpic -mpid=near" |
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} |
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if [istarget "sparc*-*-*"] { |
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append ASFLAGS " -K PIC -Av9" |
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} |
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set old_LDFLAGS $LDFLAGS |
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# These targets require a non-default emulation for successful shared |
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# library/executable builds. |
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if [istarget "tic6x-*-*"] { |
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append LDFLAGS " -melf32_tic6x_le" |
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} |
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set build_tests { |
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{"Build libpr25910.a" |
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"" "" "" |
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{foo.s} {} "libpr25910.a"} |
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} |
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run_ld_link_tests $build_tests |
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set test_list [lsort [glob -nocomplain $srcdir/$subdir/export-dynamic-symbol-*.d]] |
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foreach test_file $test_list { |
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set test_name [file rootname $test_file] |
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verbose $test_name |
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run_dump_test $test_name |
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} |
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set ASFLAGS $old_ASFLAGS |
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set LDFLAGS $old_LDFLAGS |
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@ -0,0 +1,17 @@ |
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.text |
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.global start /* Used by SH targets. */ |
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start: |
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.global _start |
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_start: |
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.global __start |
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__start: |
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.global main /* Used by HPPA targets. */ |
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main: |
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.globl _main /* Used by LynxOS targets. */ |
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_main: |
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.word 0 |
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.section .text.1, "ax" |
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.global bar |
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bar: |
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.word 0 |
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{ foo; bar; }; |
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@ -0,0 +1 @@ |
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{ foo; }; |
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@ -0,0 +1,4 @@ |
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.text |
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.globl foo |
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foo: |
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.byte 0 |
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@ -0,0 +1 @@ |
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{ f*; }; |
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@ -0,0 +1,3 @@ |
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{ |
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empty; |
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}; |
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