Commit graph

403 commits

Author SHA1 Message Date
Marcin Kościelnicki
8d9743bd43 Support 64-bit entry size in SHT_HASH (for s390).
gold/
	* dynobj.cc (Dynobj::create_elf_hash_table): Create hash table with
	target-specific entry size.
	(Dynobj::sized_create_elf_hash_table): Add size template parameter.
	* dynobj.h (Dynobj::sized_create_elf_hash_table): Likewise.
	* layout.cc (Layout::create_dynamic_symtab): Set entsize to
	hash_entry_size.
	* target.h (Target::hash_entry_size): New method.
	(Target::Target_info::hash_entry_size): New data member.

	* aarch64.cc (Target_aarch64::aarch64_info): Add hash_entry_size.
	* arm.cc (Target_arm::arm_info): Likewise.
	(Target_arm_nacl::arm_nacl_info): Likewise.
	* i386.cc (Target_i386::i386_info): Likewise.
	(Target_i386_nacl::i386_nacl_info): Likewise.
	(Target_iamcu::iamcu_info): Likewise.
	* mips.cc (Target_mips::mips_info): Likewise.
	(Target_mips_nacl::mips_nacl_info): Likewise.
	* powerpc.cc (Target_powerpc::powerpc_info): Likewise.
	* sparc.cc (Target_sparc::sparc_info): Likewise.
	* tilegx.cc (Target_tilegx::tilegx_info): Likewise.
	* x86_64.cc (Target_x86_64::x86_64_info): Likewise.
	(Target_x86_64_nacl::x86_64_nacl_info): Likewise.
	* testsuite/testfile.cc (Target_test::test_target_info): Likewise.
2015-10-28 16:45:37 -07:00
H.J. Lu
0fd153457c Feed right input object to x86_64_mov_to_lea1[12]
x86_64_mov_to_lea1.o is a 64-bit x86-64 object and x86_64_mov_to_lea2.o
is a 32-bit x86-64 object.  x86_64_mov_to_lea11 should use
x86_64_mov_to_lea2.o and x86_64_mov_to_lea12 should use
x86_64_mov_to_lea1.o.

	* testsuite/Makefile.am (x86_64_mov_to_lea11): Replace
	x86_64_mov_to_lea1.o with x86_64_mov_to_lea2.o.
	(x86_64_mov_to_lea12): Replace x86_64_mov_to_lea2.o with
	x86_64_mov_to_lea1.o.
	* testsuite/Makefile.in: Regenerated.
2015-10-20 10:46:47 -07:00
Cary Coutant
b45e00b3ed Fix symbol versioning problems in PR 18703.
If a symbol is defined with ".symver foo,foo@VER", the assembler
creates two symbols in the object: one unversioned, and one with
the (non-default) version "VER". If foo is listed in a version
script, gold would then make the first of those symbols the
default version, and would ignore the second symbol as a
duplicate, without making it a non-default version. While this is
arguably reasonable behavior, it doesn't match Gnu ld behavior,
so this patch fixes that by allowing the second definition to
override the first by resetting the "default version" indication.

Several test cases from the Gnu ld testsuite also exposed another
related problem, where a symbol defined with ".symver foo,foo@",
placed into a shared library, is not handled properly by gold.
This patch also fixes that case, binding the symbol to the base
version.

gold/
	PR gold/18703
	* dynobj.cc (Versions::record_version): Handle symbol defined with
	base version.
	(Versions::symbol_section_contents): Likewise.
	* symtab.h (Symbol::set_is_not_default): New class method.
	(Symbol_table::resolve): Add is_default_version parameter.
	(Symbol_table::should_override): Likewise.
	* resolve.cc (Symbol_table::resolve): Add is_default_version parameter,
	and pass to should_override. Adjust all callers and explicit
	instantiations.
	(Symbol_table::should_override): Add is_default_value parameter;
	allow default version in a dynamic object to override existing
	definition from same object.
	* symtab.cc (Symbol_table::add_from_object): Handle case where same
	symbol is defined as unversioned and non-default version in the same
	object.
	* testsuite/Makefile.am (ver_test_13): New test case.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/ver_test_4.cc: Add test for symbol with base version.
	* testsuite/ver_test_4.sh: Likewise.
	* testsuite/ver_test_13.c: New source file.
	* testsuite/ver_test_13.script: New version script.
	* testsuite/ver_test_13.sh: New test case.
2015-08-18 19:24:41 -07:00
Doug Kwan
ab3b14b04b Make arm_unaligned_reloc test less sensitive to disassembler output format. 2015-07-26 00:54:26 -07:00
H.J. Lu
5b2af7dd40 Don't compare symbol addresses directly
GCC 5 will fold symbol address comparison, assuming each symbol has a
different address, which leads to abort.  We should use separate
functions to compare symbol address.

	PR gold/18663
	* testsuite/Makefile.am (script_test_1_SOURCES): Set to
	script_test_1a.cc script_test_1b.cc.
	(script_test_11_r.o): Replace script_test_11.o with
	script_test_11a.o script_test_11b.o.
	(script_test_11.o): Removed.
	(script_test_11a.o): New.
	(script_test_11b.o): Likewise.
	* testsuite/Makefile.in: Regenerated.
	* testsuite/script_test_1.h: New file.
	* testsuite/script_test_1b.cc: Likewise.
	* testsuite/script_test_11.h: Likewise.
	* testsuite/script_test_11b.c: Likewise.
	* testsuite/script_test_1.cc: Renamed to ...
	* testsuite/script_test_1a.cc: This.
	Include "script_test_1.h".
	(main): Call check_int and check_ptr.
	* testsuite/script_test_11.c: Renamed to ...
	* testsuite/script_test_11a.c: This.
	Include "script_test_11.h".
	(main): Call ptr_equal.
2015-07-22 03:38:00 -07:00
H.J. Lu
cd78ea777c Mark global with hidden attribute
GCC 5 will generate a relocation for protected symbol:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

when compiling for a shared library.  It is undefined to access protected
symbol in IFUNC selector function inside a shared library.

	PR gold/18628
	* testsuite/ifuncdep2.c (global): Change protected to hidden.
	* testsuite/ifuncmod1.c (global): Likewise.
	* testsuite/ifuncmod5.c (global): Likewise.
2015-07-22 03:37:50 -07:00
H.J. Lu
45972d0074 Update testsuite/pr18689.sh for older GCC
Older GCC, like 4.2, generates .debug_macinfo section instead of
.debug_macro section.  This patch updates testsuite/pr18689.sh to
support it.
2015-07-20 12:20:46 -07:00
H.J. Lu
f54f5e31ce Clear SHF_COMPRESSED flag bit from input to output
For relocatable link, we should clear the SHF_COMPRESSED flag bit from
input group section.

	PR gold/18689
	* layout.cc (Layout::layout): Clear the SHF_COMPRESSED flag bit
	from input group section for relocatable link.
	* testsuite/Makefile.am (check_SCRIPTS): Add pr18689.sh.
	(check_DATA): Add pr18689.stdout.
	(MOSTLYCLEANFILES): Add pr18689a.o pr18689b.o.
	(pr18689.stdout): New rule.
	(pr18689a.o): Likewise.
	(pr18689b.o): Likewise.
	(pr18689.o): Likewise.
	* testsuite/pr18689.c: New file.
	* testsuite/pr18689.sh: Likewise.
	* testsuite/Makefile.in: Regenerated.
2015-07-20 10:14:35 -07:00
Yiran Wang
c20ceeb226 Remove warning about references from shared objects to hidden symbols.
gold/
	PR gold/15574
	* resolve.cc (Symbol_table): Remove warning about references
	from shared objects to hidden symbols.
	* testsuite/Makefile.am (hidden_test): Add hidden_test.syms.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/hidden_test.sh: Check dynamic symbol table; update
	expected error messages.
2015-07-20 09:19:02 -07:00
H.J. Lu
19a7fe52ae Make default compression gABI compliant
All programs in binutils+gdb git repo now support gABI compression
with the SHF_COMPRESSED bit.  This patch makes the zlib-gabi option
as compression default for gas, gold, ld and objcopy, instead of the
zlib-gnu option whose outputs are incompatible with gABI.

binutils/

	* objcopy.c (copy_file): Set BFD_COMPRESS_GABI if not
	zlib-gnu.
	* doc/binutils.texi: Change --compress-debug-sections and
	--compress-debug-sections=zlib to zlib-gabi.

binutils/testsuite/

	* binutils-all/compress.exp: Update.

gas/

	* as.c (parse_args): Make --compress-debug-sections and
	--compress-debug-sections=zlib the same as
	--compress-debug-sections=zlib-gabi.
	* doc/as.texinfo: Change --compress-debug-sections and
	--compress-debug-sections=zlib to zlib-gabi.

gold/

	* compressed_output.cc (Output_compressed_section::set_final_data_size):
	Make --compress-debug-sections=zlib the same as
	--compress-debug-sections=zlib-gabi.
	* testsuite/Makefile.am (flagstest_compress_debug_sections.check):
	Expect ".debug_.*" with the SHF_COMPRESSED bit, instead of
	".zdebug_".
	* testsuite/Makefile.in: Regenerated.

ld/

	* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Make
	--compress-debug-sections=zlib the same as
	--compress-debug-sections=zlib-gabi.
	* ld.texinfo: Change --compress-debug-sections=zlib to zlib-gabi.

ld/testsuite/

	* ld-elf/zlibbegin.rS: Updated to .debug_.* with the
	SHF_COMPRESSED bit.
	* ld-elf/zlibnormal.rS: Likewise.
2015-07-14 10:26:23 -07:00
H.J. Lu
fb8b9dbc14 Extend --compress-debug-sections in gold
This patch extends --compress-debug-sections= with [zlib-gnu|zlib-gabi]
in gold.

	PR gold/18322
	* compressed_output.cc (zlib_compress): Add argument for
	compression header size.  Set header size to compression header
	size if it isn't 0.  Don't write out the zlib header here.
	(Output_compressed_section::set_final_data_size): Support
	zlib-gnu and zlib-gabi compressions.  Pass compression header
	size to zlib_compress and write out compression header.  Set
	the SHF_COMPRESSED bit for zlib-gabi compression.  Otherwise
	clear the SHF_COMPRESSED bit
	* options.h (compress_debug_sections): Add zlib-gnu and
	zlib-gabi.
	* output.h (Output_section::set_flags): New.
	* testsuite/Makefile.am (check_PROGRAMS): Add
	flagstest_compress_debug_sections_none,
	flagstest_compress_debug_sections_gnu and
	flagstest_compress_debug_sections_gabi.
	(check_DATA): Add flagstest_compress_debug_sections_none.stdout.
	flagstest_compress_debug_sections.stdout,
	flagstest_compress_debug_sections.cmp,
	flagstest_compress_debug_sections.check,
	flagstest_compress_debug_sections_gnu.stdout,
	flagstest_compress_debug_sections_gnu.cmp,
	flagstest_compress_debug_sections_gnu.check,
	flagstest_compress_debug_sections_gabi.stdout,
	flagstest_compress_debug_sections_gabi.cmp and
	flagstest_compress_debug_sections_gabi.check.
	(flagstest_compress_debug_sections_none): New.
	(flagstest_compress_debug_sections_none.stdout): Likewise.
	(flagstest_compress_debug_sections.stdout): Likewise.
	(flagstest_compress_debug_sections.check): Likewise.
	(flagstest_compress_debug_sections.cmp): Likewise.
	(flagstest_compress_debug_sections_gnu): Likewise.
	(flagstest_compress_debug_sections_gnu.stdout): Likewise.
	(flagstest_compress_debug_sections_gnu.check): Likewise.
	(flagstest_compress_debug_sections_gnu.cmp): Likewise.
	(flagstest_compress_debug_sections_gabi): Likewise.
	(flagstest_compress_debug_sections_gabi.stdout): Likewise.
	(flagstest_compress_debug_sections_gnu.check): Likewise.
	(flagstest_compress_debug_sections_gnu.cmp): Likewise.
	* testsuite/Makefile.in: Regenerated.
2015-07-12 10:56:58 -07:00
H.J. Lu
480586639d Add SHF_COMPRESSED section decompression to gold
This patch adds SHF_COMPRESSED section decompression to gold.

	PR gold/18321
	* compressed_output.h (decompress_input_section): Add arguments
	for ELF class, big endian and sh_flags.
	* compressed_output.cc (decompress_input_section): Likewise.
	Support the SHF_COMPRESSED section.
	* dynobj.h (Dynobj): Add elfsize and is_big_endian member
	functions.
	* plugin.h (Pluginobj): Likewise.
	* layout.cc (Layout::get_output_section_flags): Also clear the
	SHF_COMPRESSED bit.
	* object.h (Compressed_section_info): Add flag to store sh_flags.
	(Object): Add pure virtual elfsize and is_big_endian member
	functions.
	* object.cc (need_decompressed_section): Don't skip the ".zdebug"
	prefix here.
	(build_compressed_section_map): Check SHF_COMPRESSED for
	uncompressed size.  Store sh_flags in Compressed_section_info.
	Pass size, big_endian and sh_flags to decompress_input_section.
	Skip the ".debug"/".zdebug" prefix when passing section name to
	need_decompressed_section.
	(Sized_relobj_file<size, big_endian>::do_find_special_section):
	Don't check ".zdebug_*" sections.
	(Object::decompressed_section_contents): Pass ELF class, big
	endian and sh_flags to decompress_input_section.
	* reloc.cc (Sized_relobj_file<size, big_endian>::write_sections):
	Likewise.
	* testsuite/Makefile.am (check_DATA): Add
	debug_msg_cdebug_gabi.err and gdb_index_test_2_gabi.stdout.
	(MOSTLYCLEANFILES): Add debug_msg_cdebug_gabi.err and
	gdb_index_test_2_gabi.stdout.
	(debug_msg_cdebug_gabi.o): New.
	(odr_violation1_cdebug_gabi.o): Likewise.
	(odr_violation2_cdebug_gabi.o): Likewise.
	(debug_msg_cdebug_gabi.err): Likewise.
	(check_SCRIPTS): Add gdb_index_test_2_gabi.sh.
	(gdb_index_test_cdebug_gabi.o): Likewise.
	(gdb_index_test_2_gabi): Likewise.
	(gdb_index_test_2_gabi.stdout): Likewise.
	* testsuite/gdb_index_test_2_gabi.sh: New file.
	* testsuite/Makefile.in: Regenerated.
2015-07-12 10:50:40 -07:00
Doug Kwan
15162befa3 Align text section ends so that stub tables appears at expected addresses. 2015-07-06 15:02:40 -07:00
Jing Yu
a3a0c39166 Fix broken gold/testsuite/script_test_12 in some setup.
This patch adds -O0 to gold script_test_12 test, hoping that compiler
won't change the order of globel variables that the test assumes.

Changelog:
	testsuite/Makefile.am: Add -O0 to compile script_test_12 test.
	testsuite/Makefile.in: Regenerate.
2015-06-11 12:52:07 -07:00
Cary Coutant
374082dfab Fix gold to group sections correctly via linker script.
In PR 15370, it is noted that gold does not distinguish between
"*(.foo .bar)" and "*(.foo) *(.bar)" in linker scripts. In both
cases, gold groups all .foo sections together, followed by all
.bar sections, whereas in the first case, it should collect all
.foo and .bar sections in the order seen.

If you add sort specs, the Gnu linker has some bizarre corner
cases that I do not try to replicate. In particular,
"*(SORT_BY_NAME(.foo) SORT_BY_NAME(.bar))" does the same thing
as "*(.foo) *(.bar)". But if you apply a sort spec
to just one of several patterns, say, "*(SORT_BY_NAME(.foo) .bar)",
the Gnu linker will collect any .bar section it sees before the
first .foo, then all .foo sections, then all remaining .bar
sections. With this patch, if any of the input patterns have a
sort spec, gold will group them all as it did before; e.g.,
all .foo sections followed by all .bar sections.

2015-06-03  Cary Coutant  <ccoutant@gmail.com>

gold/
	PR gold/15370
	* script-sections.cc
	(Output_section_element_input::set_section_addresses): When there
	are several patterns with no sort spec, put all sections in the same
	bin.
	* testsuite/Makefile.am (script_test_12): New testcase.
	(script_test_12i): New testcase.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/script_test_12.t: New test linker script.
	* testsuite/script_test_12i.t: New test linker script.
	* testsuite/script_test_12a.c: New test source file.
	* testsuite/script_test_12b.c: New test source file.
2015-06-03 19:37:49 -07:00
Cary Coutant
9c7fe3c5c2 PR 17819: Fix --build-id=tree when using --compress-debug-sections.
When --build-id=tree is selected, gold would schedule a set of
tasks to run to compute md5 hashes in parallel on chunks of the
file. The scheduling was done before the
Write_after_input_sections_task ran, so if we are compressing
debug sections, the output file will change size and be remapped
to a new address, sometimes causing the build id computation to
crash, but even when it doesn't crash, it wouldn't include the
debug information in the hash computation.

This patch delays the scheduling of the md5 tasks until after
Write_after_input_sections_task.

gold/
        PR gold/17819
        * gold.cc (queue_final_tasks): When --build-id=tree, queue a
        separate task to schedule the build id computation.
        * layout.cc (Hash_task::Hash_task): Remove build_id_blocker,
        add Output_file and offset.
        (Hash_task::run): Get and release the input views.
        (Hash_task::is_runnable): Always return NULL (always runnable).
        (Layout::queue_build_id_tasks): Remove.
        (Layout::write_build_id): Add array_of_hashes and size_of_hashes
        parameters; use them instead of class members.
        (Build_id_task_runner::run): New function.
        (Close_task_runner::run): Pass array_of_hashes and size_of_hashes
        to write_build_id.
        * layout.h (Layout::queue_build_id_tasks): Remove.
        (Layout::write_build_id): Add array_of_hashes and size_of_hashes
        parameters.
        (Layout::array_of_hashes_): Remove.
        (Layout::size_of_array_of_hashes_): Remove.
        (Layout::input_view_): Remove.
        (Build_id_task_runner): New class.
        (Close_task_runner::Close_task_runner): Add array_of_hashes and
        size_of_hashes parameters.
        (Close_task_runner::array_of_hashes_): New data member.
        (Close_task_runner::size_of_hashes_): New data member.
        * testsuite/Makefile.am
        (flagstest_compress_debug_sections_and_build_id_tree): New test.
        * testsuite/Makefile.in: Regenerate.
2015-06-02 09:46:10 -07:00
Rafael Ávila de Espíndola
cfbf0e3c5b If a range is missing, assume the input address is mapped.
When Output_section::is_input_address_mapped is called we have entries for
all dropped ranges, but not for all ranges.
2015-04-27 14:35:17 -04:00
Sriraman Tallam
a100d66fb4 Add option --weak-unresolved-symbols to treat unresolved symbols as weak ref.
This patch adds option --weak-unresolved-symbols to treat unresolved symbols as
weak references.  This is helpful when we want the link to succeed with unresolved
symbols and the dynamic loader to not complain at run-time.  Option
--warn-unresolved-symbols lets the link succeed but could fail at run-time with
unresolved symbol warnings especially when the unresolved symbols have GOT entries
and dynamic relocations against them, like when -fPIE is used.
2015-04-23 13:56:40 -07:00
Sriraman Tallam
65eb8c79be Add option --weak-unresolved-symbols to treat unresolved as weak references.
This patch adds option --weak-unresolved-symbols to treat unresolved symbols as
weak references.  This is helpful when we want the link to succeed with unresolved
symbols and the dynamic loader to not complain at run-time.  Option
--warn-unresolved-symbols lets the link succeed but could fail at run-time with
unresolved symbol warnings especially when the unresolved symbols have GOT entries
and dynamic relocations against them, like when -fPIE is used.

2015-04-23  Sriraman Tallam  <tmsriram@google.com>
	* options.h (--weak-unresolved-symbols): New option.
	* symtab.cc (Symbol_table::sized_write_globals): Change symbol
	binding to weak with new option.
	* symtab.h (is_weak_undefined): Check for new option.
	(is_strong_undefined): Check for new option.
	* testsuite/Makefile.am (weak_unresolved_symbols_test): New test.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/weak_unresolved_symbols_test.cc: New file.
2015-04-23 13:50:48 -07:00
Cary Coutant
a6a177507c Allow gold to resolve defined TLS symbols in a PIE link.
This patch fixes Symbol::final_value_is_known so that a defined TLS symbol
in a PIE link is treated as having a known final value, thus allowing
GD->LE TLS optimization, eliminating an unnecessary GOT entry and dynamic
relocation.

gold/
	* symtab.cc (Symbol::final_value_is_known): Check for TLS symbol
	in a PIE link.
	* testsuite/Makefile.am (tls_pie_test.sh): New test.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/tls_pie_test.sh: New.
2015-04-09 15:47:37 -07:00
Cary Coutant
437ddf0c4c Improve ODR checking in gold.
gold/
	* debug.h (DEBUG_LOCATION): New.
	(DEBUG_ALL): Include DEBUG_LOCATION.
	(debug_string_to_enum): Add DEBUG_LOCATION.
	* dwarf_reader.cc (Sized_dwarf_line_info::read_lines): Fix debug
	output to print correct context.
	(Sized_dwarf_line_info::do_addr2line): Add debug output. Return
	up to 4 more locations at the beginning of the function.
	* symtab.cc (Symbol_table::detect_odr_violations): Get canonical
	result before sorting list of line numbers.
	* testsuite/debug_msg.sh: Allow range of line numbers for
	canonical results on optimized code.
2015-04-09 11:53:01 -07:00
Ilya Tocar
1fa29f1060 [Gold,x86_64] Convert mov foo@GOTPCREL(%rip), %reg to lea foo(%rip), %reg
2015-04-06  Ilya Tocar  <ilya.tocar@intel.com>

	PR gold/17641
	* x86_64.cc (Target_x86_64::can_convert_mov_to_lea): New.
	(Target_x86_64::Scan::local): Don't create GOT entry, when we
	can convert mov to lea.
	(Target_x86_64::Scan::global): Ditto.
	(Target_x86_64::Relocate::relocate): Convert mov foo@GOTPCREL(%rip),
	%reg to lea foo(%rip), %reg if possible.
	* testsuite/Makefile.am (x86_64_mov_to_lea): New test.
	* testsuite/x86_64_mov_to_lea1.s: New.
	* testsuite/x86_64_mov_to_lea2.s: Ditto.
	* testsuite/x86_64_mov_to_lea3.s: Ditto.
	* testsuite/x86_64_mov_to_lea4.s: Ditto.
	* testsuite/x86_64_mov_to_lea.sh: Ditto.
---
2015-04-06 12:37:34 +03:00
Ilya Tocar
c4fc4724a6 Convert mov foo@GOT(%reg), %reg to lea foo@GOTOFF(%reg), %reg
2015-04-01  Ilya Tocar  <ilya.tocar@intel.com>

	PR gold/17640
	* i386.cc (Target_i386::can_convert_mov_to_lea): New.
	(Target_i386::Scan::local): Don't create GOT entry, when we
	can convert GOT to GOTOFF.
	(Target_i386::Scan::global): Ditto.
	(Target_i386::Relocate::relocate): Convert  mov foo@GOT(%reg), %reg to
	lea foo@GOTOFF(%reg), %reg if possible.
	* testsuite/Makefile.am (i386_mov_to_lea): New test.
	* testsuite/i386_mov_to_lea1.s: New.
	* testsuite/i386_mov_to_lea2.s: Ditto.
	* testsuite/i386_mov_to_lea3.s: Ditto.
	* testsuite/i386_mov_to_lea4.s: Ditto.
	* testsuite/i386_mov_to_lea5.s: Ditto.
	* testsuite/i386_mov_to_lea.sh: Ditto.
2015-04-01 16:52:09 +03:00
H.J. Lu
918357b955 Regenerate configure in gold
Regenerate configure for zlib.m4 change, which adds --with-system-zlib and
removes --with-zlib in gold.  zlib is enabled unconditionally with builtin
zlib imported from GCC.

	* Makefile.am (ZLIB): New.
	(ZLIBINC): Likewise.
	(AM_CFLAGS): Add $(ZLIBINC).
	(AM_CXXFLAGS): Likewise.
	(ldadd_varldadd_var): Add $(ZLIB).
	(incremental_dump_LDADD): Likewise.
	(dwp_LDADD): Likewise.
	* compressed_output.cc: Don't check HAVE_ZLIB_H to include
	<zlib.h>.
	(zlib_compress): Don't check HAVE_ZLIB_H.
	(zlib_decompress): Likewise.
	* options.h (compress_debug_sections): Likewise.
	* configure.ac (AM_CONDITIONAL): Removed.
	* testsuite/Makefile.am (ZLIB): New.
	(LDADD): Add $(ZLIB).
	Don't check HAVE_ZLIB.
	* Makefile.in: Regenerated.
	* config.in: Likewise.
	* configure: Likewise.
	* testsuite/Makefile.in: Likewise.
2015-04-01 06:40:35 -07:00
Cary Coutant
410da591ba PR gold/18048: Fix INCLUDE directive support for gold
This patch fixes INCLUDE directives in script files, so that when
an INCLUDE appears inside a sections block, section commands block,
or memory def block, the contents are parsed in the appropriate
context.

gold/
	PR gold/18048
	* script-c.h (script_include_directive): Add first_token parameter.
	* script.cc (script_include_directive): Add first_token parameter, and
	pass it to read_script_file.
	* yyscript.y (PARSING_SECTIONS_BLOCK, PARSING_SECTION_CMDS)
	(PARSING_MEMORY_DEF): New tokens.
	(top): Add new productions for INCLUDE files.
	(file_cmd): Replace file_or_sections_cmd with copy of its productions.
	Pass PARSING_LINKER_SCRIPT to script_include_directive.
	(section_block_cmd): Likewise; pass PARSING_SECTIONS_BLOCK.
	(section_cmd): Pass PARSING_SECTION_CMDS.
	(file_or_sections_cmd): Remove.
	(memory_def): Pass PARSING_MEMORY_DEF.
	* testsuite/Makefile.am (memory_test_2): New test.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/memory_test_inc.t: New script file.
	* testsuite/memory_test_inc_1.t.src: New script file.
	* testsuite/memory_test_inc_2.t.src: New script file.
	* testsuite/memory_test_inc_3.t.src: New script file.
2015-03-21 19:54:15 -07:00
Cary Coutant
943c8b4393 Fix gold incremental test failures.
Newer version of GCC pass -z relro to the linker, but incremental linking
does not support relro. This patch adds a check to complain about the
conflict, and changes the testsuite to pass -z norelro to the incremental
tests.

2015-03-11  Cary Coutant  <ccoutant@google.com>

gold/
	* options.cc (General_options::finalize): Don't allow -z relro
	with incremental linking.
	* testsuite/Makefile.am (incremental_test): Add -z norelro.
	(incremental_test_2): Likewise.
	(incremental_test_3): Likewise.
	(incremental_test_4): Likewise.
	(incremental_test_5): Likewise.
	(incremental_test_6): Likewise.
	(incremental_copy_test): Likewise.
	(incremental_common_test_1): Likewise.
	(incremental_comdat_test_1): Likewise.
	* testsuite/Makefile.in: Regenerate.
2015-03-11 22:07:51 -07:00
Cary Coutant
e9c1bdad26 Fix --dynamic-list so that symbols not in the list are still exported.
In PR 13577, the complaint was that -Bsymbolic was overriding the binding
behavior for symbols listed in the --dynamic-list by setting the DT_SYMBOLIC
tag in the dynamic table. In reading the Gnu ld manual, I decided that
--dynamic-list should be mutually exclusive of -Bsymbolic, and modified
gold so that --dynamic-list would treat symbols listed as preemptible,
and all other symbols as internally bound. I was wrong.

PR 16992 shows that with --dynamic-list (and not -Bsymbolic), a symbol
not listed in the dynamic list is being internally bound within the
shared library, but because it's still in the dynamic symbol table, we
expose it to a COPY relocation, and things go really bad from there.

(I can reproduce the same failure, simply by turning on -Bsymbolic-functions
with the Gnu linker. Even though the symbol is bound internally, it's
still exported to the dynamic symbol table, and is exposed to a COPY
relocation.)

I've backed out part of the fix for PR 13577, and -Bsymbolic (or
-Bsymbolic-functions) can now be used with --dynamic-list, but if the
two are used together, we do not set DT_SYMBOLIC or DF_SYMBOLIC
(this matches Gnu ld behavior). We now treat symbols listed in the
dynamic list as premptible, but we do not automatically treat symbols
not listed there as non-premptible.

gold/
	PR gold/13577
	PR gold/16992
	* layout.cc (Layout::finish_dynamic_section): Don't set DT_SYMBOLIC or
	DF_SYMBOLIC if --dynamic-list option is used.
	* options.cc (General_options::finalize): --dynamic-list is not
	mutually exclusive with -Bsymbolic.
	* symtab.h (Symbol::is_preemptible): Don't exclude dynamic symbols not
	listed in --dynamic-list.
	* testsuite/Makefile.am (dynamic_list_lib2.so): Add
	-Bsymbolic-functions.
	* testsuite/Makefile.in: Regenerate.
2015-02-16 22:15:12 -08:00
H.J. Lu
e051a5b512 Replace two_file_shared_2.so with two_file_shared_1.so
There are

two_file_shared_2_pic_1_test_LDADD = two_file_test_2_pic.o two_file_shared_1.so

There should be two_file_shared_1.so, not two_file_shared_2.so in
two_file_shared_2_pic_1_test_DEPENDENCIES.

	* testsuite/Makefile.am (two_file_shared_2_pic_1_test_DEPENDENCIES):
	Replace two_file_shared_2.so with two_file_shared_1.so.
	* testsuite/Makefile.in: Regenerated.
2015-02-09 05:36:02 -08:00
Alan Modra
dddcc5b9a8 Gold testsuite make clean
* testsuite/Makefile.am (MOSTLYCLEANFILES): Add libweak_undef_2.a,
	plugin_test_thin.a and defsym_test.
	* testsuite/Makefile.in: Regenerate.
2015-02-09 13:19:53 +10:30
Cary Coutant
2cfbf2fece Fix a file descriptor leak in gold.
When an LTO linker plugin claims an external member of a thin archive, gold
does not properly unlock the file and make its file descriptor available for
reuse. This patch fixes the problem by modifying Archive::include_member to
unlock the object file via an RAII class instance, ensuring that it will be
unlocked no matter what path is taken through the function.

gold/
	PR gold/15660
	* archive.cc (Thin_archive_object_unlocker): New class.
	(Archive::include_member): Unlock external members of thin archives.
	* testsuite/Makefile.am (plugin_test_1): Rename .syms files.
	(plugin_test_2): Likewise.
	(plugin_test_3): Likewise.
	(plugin_test_4): Likewise.
	(plugin_test_5): Likewise.
	(plugin_test_6): Likewise.
	(plugin_test_7): Likewise.
	(plugin_test_8): Likewise.
	(plugin_test_9): Likewise.
	(plugin_test_10): Likewise.
	(plugin_test_11): New test case.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/plugin_test.c (claim_file_hook): Check for parallel .syms
	file to decide whether to claim file.
	(all_symbols_read_hook): Likewise.
	* testsuite/plugin_test_1.sh: Adjust expected output.
	* testsuite/plugin_test_2.sh: Likewise.
	* testsuite/plugin_test_3.sh: Likewise.
	* testsuite/plugin_test_6.sh: Likewise.
	* testsuite/plugin_test_tls.sh: Likewise.
	* testsuite/plugin_test_11.sh: New testcase.
2015-02-03 20:03:42 -08:00
H.J. Lu
4fc1b9d43c Handle stack split for x32
X32 uses cmp %fs:NN,%esp, lea NN(%rsp),%r10d, lea NN(%rsp),%r11d,
instead of cmp %fs:NN,%rsp, lea NN(%rsp),%r10, lea NN(%rsp),%r11.
This patch handles it.

	PR gold/17729
	* configure.ac (DEFAULT_TARGET_X86_64): Don't set for x32.
	(DEFAULT_TARGET_X32): Set for x32.
	* x86_64.cc (cmp_insn_32): New.
	(lea_r10_insn_32): Likewise.
	(lea_r11_insn_32): Likewise.
	(cmp_insn_64): Likewise.
	(lea_r10_insn_64): Likewise.
	(lea_r11_insn_64): Likewise.
	(Target_x86_64<size>::do_calls_non_split): Handle x32.
	* testsuite/Makefile.am (check_SCRIPTS): Add split_x32.sh.
	(check_DATA): Add split_x32 files.
	(split_x32_[1234n].o): New targets.
	(split_x32_[124]): New targets.
	(split_x32_[1234r].stdout): New targets.
	* testsuite/split_x32.sh: New file.
	* testsuite/split_x32_1.s: Likewise.
	* testsuite/split_x32_2.s: Likewise.
	* testsuite/split_x32_3.s: Likewise.
	* testsuite/split_x32_4.s: Likewise.
	* testsuite/split_x32_n.s: Likewise.
	* configure: Regenerated.
	* testsuite/Makefile.in: Likewise.
2015-01-06 15:38:25 -08:00
Alan Modra
b90efa5b79 ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
H.J. Lu
bd040da1db Change SometimesInlineFunction to "return i * i * 3;"
The debug_msg test has 2 implementations of SometimesInlineFunction:

int SometimesInlineFunction(int i) { return i; }
int SometimesInlineFunction(int i) { return i * i; }

and One Definition Rule (ODR) violation detection expects they will be
compiled into functions of different sizes.  Hower, on x86, GCC 4.7 and
newer compile them into functions of the same size and ODR violation
detection test fails.  This patch changes

int SometimesInlineFunction(int i) { return i; }

to

int SometimesInlineFunction(int i) { return i * i * 3; }

so that it will be compiled into a function of larger size.

	PR gold/14608
	* testsuite/debug_msg.cc (SometimesInlineFunction): Changed
	to "return i * i * 3;".
2014-12-20 08:05:45 -08:00
H.J. Lu
4759c34e12 Compile pie_copyrelocs_test.cc with -fno-exceptions -fno-asynchronous-unwind-tables
PR gold/17675
	* testsuite/Makefile.am (pie_copyrelocs_test_CXXFLAGS): New.
	* testsuite/Makefile.in: Regenerated.
2014-12-03 10:59:46 -08:00
Han Shen
9726c3c179 Misc about gold for aarch64 backend.
The patch does the following things:
  -- Add support for ifunc.
  -- Enable safe icf
  -- Add support for TLSLD relocations
     R_AARCH64_TLSLD_ADR_PAGE21,
     R_AARCH64_TLSLD_ADD_LO12_NC,
     R_AARCH64_TLSLD_MOVW_DTPREL_G1,
     R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC.
     (R_AARCH64_TLSLD_MOVW_* are used by LLVM.)
  -- Add support for TLSLD->TLSLE relaxation.
  -- Add support for R_AARCH64_LD_PREL_LO19, R_AARCH64_ADR_PREL_LO21.
  -- Fix 2 encoding bugs in AArch64_relocate_functions::update_movnz.
  -- Correct TLS relocation properties in gold/aarch64-reloc.def.
  -- Update testsuite/icf_safe_so_test.cc, testsuite/icf_safe_test.sh.

gold/
2014-10-29  Han Shen  <shenhan@google.com>
            Jing Yu   <jingyu@google.com>

	* aarch64-reloc.def: Add LD_PREL_LO12, ADR_PREL_LO21,
	TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1,
	TLSLD_MOVW_DTPREL_G0_NC. Change property of TLS relocations to
	Symbol::TLS_REF.
	* aarch64.cc (Target_aarch64::do_can_check_for_function_pointers): New
	method.
	(Target_aarch64::reloc_needs_plt_for_ifunc): New method.
	(Target_aarch64::tls_ld_to_le): New method.
	(Target_aarch64::aarch64_info): Enable can_icf_inline_merge_sections
	for 64bit targets.
	(Output_data_plt_aarch64::irelative_rel_): New data member.
	(Output_data_plt_aarch64::add_entry): Add irelative entries to plt.
	(Output_data_plt_aarch64::add_local_ifunc_entry): New method.
	(Output_data_plt_aarch64::add_relocation): New method.
	(Output_data_plt_aarch64::do_write): Add gold_assert on got_irelative
	offset. Add got_irelative size to got size.
	(AArch64_relocate_functions): Typedef AArch64_valtype. Replace long
	type string with the new typename.
	(AArch64_relocate_functions::update_adr): Replace parameter x with
	immed.
	(AArch64_relocate_functions::update_movnz): Correct wrong val mask.
	(AArch64_relocate_functions::reloc_common): New method.
	(AArch64_relocate_funcsions::rela_general): Extract common part out
	into reloc_common method.
	(AArch64_relocate_functions::rela_general): Likewise.
	(AArch64_relocate_functions::pcrela_general): Likewise.
	(AArch64_relocate_functions::adr): New method.
	(AArch64_relocate_functions::adrp): Calculate immed before calling
	update_adr.
	(AArch64_relocate_functions::adrp): Likewise.
	(AArch64_relocate_functions::movnz): Cast x to SignedW type when
	comparing x to 0. Calculate immed from ~x when x < 0.
	(Target_aarch64::optimize_tls_reloc): Add new cases for
	TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1,
	TLSLD_MOVW_DTPREL_G0_NC.
	(Target_aarch64::possible_function_pointer_reloc): Implement this
	method.
	(Target_aarch64::Scan::local_reloc_may_be_function_pointer): Update
	comment.
	(Target_aarch64::Scan::local): Add codes to handle STT_GNU_IFUNC
	symbol. Add cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC,
	TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC.
	(Target_aarch64::Scan::global): Add codes to handle STT_GNU_IFUNC
	symbol. Add cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC,
	TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC.
	(Target_aarch64::make_plt_entry): Call add_entry with two more
	parameters.
	(Target_aarch64::make_local_ifunc_plt_entry): New method.
	(Target_aarch64::Relocate::relocate): Add cases for LD_PREL_LO19,
	ADR_PREL_LO21, TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC,
	TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC.
	(Target_aarch64::Relocate::relocate_tls): Add cases for
	TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1,
	TLSLD_MOVW_DTPREL_G0_NC.
	* testsuite/icf_safe_so_test.cc: Correct test comment.
	* testsuite/icf_safe_test.sh: Add AArch64 arch.
2014-10-29 11:31:36 -07:00
Cary Coutant
635aa30e3a Fix race condition causing assert in Eh_frame_hdr::do_sized_write().
2014-09-23  Taiju Tsuiki  <tzik@google.com>
            Cary Coutant  <ccoutant@google.com>

gold/
	* gold.cc (queue_final_tasks): Add Write_sections_task as a blocker
	on input_sections_blocker.
	* layout.cc (Write_sections_task::locks): Unblock
	input_sections_blocker_.
	* layout.h (Write_sections_task::Write_sections_task): Add
	input_sections_blocker.
	* testsuite/Makefile.am (exception_x86_64_bnd_test): Add gcctestdir/ld
	to DEPENDENCIES.
	* testsuite/Makefile.in: Regenerate.
2014-09-23 23:20:57 -07:00
Rafael Ávila de Espíndola
c0c71592f7 A a testcase for common symbol handling with plugins.
2014-09-18  Rafael Ávila de Espíndola <rafael.espindola@gmail.com>

	* testsuite/Makefile.am (plugin_test_10): New test.
	* testsuite/Makefile.in: Regenerate
	* testsuite/plugin_common_test_2.c (c1): Align to 8.
	* testsuite/plugin_test_10.sh: New file.
2014-09-18 13:58:16 -04:00
Alan Modra
ad9fe6c108 Modify new gold test to pass on powerpc64le
* testsuite/defsym_test.sh: Allow ppc64le localentry annotation.
2014-08-06 22:15:48 +09:30
Cary Coutant
e051745c83 Fix --defsym to copy symbol attributes.
Alan Modra committed a patch to Gnu ld to fix a problem encountered on
PPC where the --defsym option wasn't copying the st_other bits to the
newly-defined symbol.

    https://sourceware.org/ml/binutils/2014-07/msg00094.html

Gold has the same problem, and additionally wasn't copying the symbol type.
This patch fixes both problems, by copying the symbol type, visibility, and
the remaining st_other bits to the new symbol for --defsym=sym1=sym2
assignments.

gold/
	* expression.cc (struct Expression::Expression_eval_info): Add
	new fields type_pointer, vis_pointer, and nonvis_pointer.
	(Expression::eval_maybe_dot): Add type_pointer, vis_pointer, and
	nonvis_pointer parameters. Adjust all calls.
	(Symbol_expression::value): Update type, visibility, and nonvis bits
	in caller.
	* script.cc (Symbol_assignment::sized_finalize): Update type,
	visibility, and remaining st_other bits for new symbol.
	* script.h: (Expression::eval_maybe_dot): Add type_pointer,
	vis_pointer, and nonvis_pointer parameters.
	* symtab.h (Symbol::set_type): New method.

	* testsuite/Makefile.am (defsym_test): New test.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/defsym_test.c: New file.
	* testsuite/defsym_test.sh: New file.
2014-07-08 22:52:37 -07:00
Alan Modra
61f5c66f62 Fix gold plugin_test failures on PowerPC64 ELFv2
readelf output for ELFv2 includes st_other bits specifying a
function's local entry offset.

	* testsuite/plugin_test.c (parse_readelf_line): Skip non-visibility
	st_other output.
2014-06-03 10:47:55 +09:30
Cary Coutant
f6fb832249 Fix testsuite to use newly-built linker for ehdr_start_test_4, and fix
check script to look for the right binding.

gold/
	* testsuite/Makefile.am (ehdr_start_test_4): Fix typo in -B option.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/ehdr_start_test_4.sh: Look for "U" instead of "w".
2014-05-30 10:21:27 -07:00
Sriraman Tallam
a82bef932e With -pie and x86, the linker complains if it sees a PC-relative relocation
to access a global as it expects a GOTPCREL relocation.  This is really not
necessary as the linker could use a copy relocation to get around it.  This
patch enables copy relocations with pie.

Context:
This is useful because currently the GCC compiler with option -fpie makes
every extern global access go through the GOT. That is because the compiler
cannot tell if a global will end up being defined in the executable or not
and is conservative. This ends up hurting performance when the binary is linked
as mostly static where most of the globals do end up being defined in the
executable.  By allowing copy relocs with fPIE, the compiler need not generate
a GOTPCREL(GOT access) for any global access.  It can safely assume that all
globals will be defined in the executable and generate a PC-relative access
instead.  Gold can then create a copy reloc for only the undefined globals.

	gold/
	* symtab.h (may_need_copy_reloc): Remove check for position independent
	code.
	* x86_64.cc (Target_x86_64<size>::Scan::global): Add check for no
	position independence before pc absolute may_need_copy_reloc call.
	Add check for executable output befor pc relative may_need_copy_reloc
	call.
	* i386.cc: Ditto.
	* arm.cc: Ditto.
	* sparc.cc: Ditto.
	* tilegx.cc: Ditto.
	* powerpc.cc: Add check for no position independence before
	may_need_copy_reloc calls.
	* testsuite/pie_copyrelocs_test.cc: New file.
	* testsuite/pie_copyrelocs_shared_test.cc: New file.
	* Makefile.am (pie_copyrelocs_test): New test.
	* Makefile.in: Regenerate.
2014-05-13 10:55:11 -07:00
Sriraman Tallam
1642b4b337 Optimizing accesses to Globals with -fpie -pie:
With -pie and x86, the linker complains if it sees a PC-relative relocation
to access a global as it expects a GOTPCREL relocation.  This is really not
necessary as the linker could use a copy relocation to get around it.  This
patch enables copy relocations with pie.

Context:
This is useful because currently the GCC compiler with option -fpie makes
every extern global access go through the GOT. That is because the compiler
cannot tell if a global will end up being defined in the executable or not
and is conservative. This ends up hurting performance when the binary is linked
as mostly static where most of the globals do end up being defined in the
executable.  By allowing copy relocs with fPIE, the compiler need not generate
a GOTPCREL(GOT access) for any global access.  It can safely assume that all
globals will be defined in the executable and generate a PC-relative access
instead.  Gold can then create a copy reloc for only the undefined globals.
2014-05-13 10:33:59 -07:00
Cary Coutant
d1bddd3c4b Fix handling of __ehdr_start when it cannot be defined.
2014-05-02  Cary Coutant  <ccoutant@google.com>

	* defstd.cc (in_segment): Define __ehdr_start here...
	* layout.cc (Layout::finalize): ...Instead of here.  Set the
	output segment when known.
	* resolve.cc (Symbol::override_base_with_special): Remember
	the original binding.
	* symtab.cc (Symbol::set_output_segment): New function.
	(Symbol::set_undefined): New function.
	* symtab.h (Symbol::is_weak_undefined): Check original undef
	binding.
	(Symbol::is_strong_undefined): New function.
	(Symbol::set_output_segment): New function.
	(Symbol::set_undefined): New function.
	* target-reloc.h (is_strong_undefined): Remove.
	(issue_undefined_symbol_error): Call Symbol::is_weak_undefined.
	Check for hidden undefs.
	(relocate_section): Call Symbol::is_strong_undefined.

	* testsuite/Makefile.am (ehdr_start_test_1)
	(ehdr_start_test_2, ehdr_start_test_3)
	(ehdr_start_test_4, ehdr_start_test_5): New test cases.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/ehdr_start_def.cc: New source file.
	* testsuite/ehdr_start_test.cc: New source file.
	* testsuite/ehdr_start_test.t: New linker script.
	* testsuite/ehdr_start_test_4.sh: New shell script.
2014-05-02 16:33:43 -07:00
Cary Coutant
ae447ddd12 Modify gold testsuite to disable plugins added by GCC driver.
GCC 4.8 now adds linker plugin options by default, which conflict with the
--incremental tests in the testsuite. This patch checks whether the compiler
supports the -fno-use-linker-plugin option, and adds it to all link
commands.

2014-04-02  Cary Coutant  <ccoutant@google.com>

	* configure.ac (HAVE_PUBNAMES): Use C instead of C++.
	(HAVE_NO_USE_LINKER_PLUGIN): Check for -fno-use-linker-plugin.
	* configure: Regenerate.
	* testsuite/Makefile.am (OPT_NO_PLUGINS): New macro for
	-fno-use-linker-plugin.
	(LINK1, CXXLINK1): Add it to the link command.
	* testsuite/Makefile.in: Regenerate.
2014-04-02 15:04:36 -07:00
Alan Modra
4b95cf5c0c Update copyright years 2014-03-05 22:16:15 +10:30
Cary Coutant
1f25b93bc6 Fix problem where -u is ignored when a weak undef is seen.
When the linker has a weak undefined symbol, it normally does not
select an archive library member just to satisfy the reference.
If the same symbol is also listed in a -u option, however, we
should select the archive library member.  This patch reorders
the code in Library_base::should_include_member so that the
additional checks are performed in the case of a weak undef.

gold/

2014-02-06  Cary Coutant  <ccoutant@google.com>

	* archive.cc (Library_base::should_include_member): Reorder
	code to check for -u option if a weak undef has already been seen.
	* testsuite/Makefile.am (weak_undef_test_2): New test case.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/weak_undef_file3.cc: New file.
	* testsuite/weak_undef_file4.cc: New file.
	* testsuite/weak_undef_test_2.cc: New file.
2014-02-06 17:15:02 -08:00
Cary Coutant
fd834e57ff Fix problems with the --dynamic-list option.
PR gold/13577 complains that even though symbols listed in
the --dynamic-list script are exported, they are still bound symbolically
if -Bsymbolic is also used. There are two underlying problems here.
First, -Bsymbolic should be overridden by --dynamic-list, since the
dynamic list provides an explicit list of symbols that are not bound
within the library, and if we go ahead and set DT_SYMBOLIC, then the
dynamic loader will bind it within the library anyway. Second, gold
did not properly identify the symbols listed in the file as preemptible.

PR gold/16530 complains that symbols listed in the --dynamic-list script
can still be garbage collected. I've fixed this by checking the symbols
as they're added to the symbol table. (Unlike the --export-dynamic-symbol
option, we can't iterate over the list, because the --dynamic-list script
can have wildcards in it.)

gold/

2014-02-05  Cary Coutant  <ccoutant@google.com>

	PR gold/13577
	* options.cc (General_options::parse_dynamic_list):
	Set have_dynamic_list_.
	(General_options::General_options): Initialize have_dynamic_list_.
	(General_options::finalize): Turn off -Bsymbolic and
	-Bsymbolic-functions if --dynamic-list provided.
	* options.h (General_options::have_dynamic_list): New function.
	(General_options::have_dynamic_list_): New data member.
	* symtab.h (Symbol::is_preemptible): Handle --dynamic-list
	correctly.

	PR gold/16530
	* symtab.cc (Symbol_table::add_from_relobj): If symbol is named
	in --dynamic-list, mark it.

	* testsuite/Makefile.am (gc_dynamic_list_test.sh): New test case.
	(dynamic_list_2): New test case.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/dynamic_list_2.cc: New file.
	* testsuite/dynamic_list_2.t: New file.
	* testsuite/dynamic_list_lib1.cc: New file.
	* testsuite/dynamic_list_lib2.cc: New file.
	* testsuite/gc_dynamic_list_test.c: New file.
	* testsuite/gc_dynamic_list_test.sh: New file.
	* testsuite/gc_dynamic_list_test.t: New file.
2014-02-05 18:01:47 -08:00
Cary Coutant
ec673e648c Add .gdb_index version 7 support.
This patch adds support for .gdb_index version 7, which adds several
flag bits to the symbol index.  It also fixes a problem where it did
not handle compressed debug sections correctly.

Tested with a google/gcc-4_8 branch compiler, which supports
the -ggnu-pubnames option to generate .debug_gnu_pubnames/pubtypes
tables. (We will submit that patch to GCC when stage 1 reopens.)

2014-01-28  Cary Coutant  <ccoutant@google.com>

	* gold/dwarf_reader.cc: include <utility> (for make_pair).
	(Dwarf_abbrev_table::do_read_abbrevs): Check for compressed
	debug sections.
	(Dwarf_ranges_table::read_ranges_table): Likewise.
	(Dwarf_pubnames_table::read_section): Check for GNU-style
	sections, and for compressed debug sections.
	(Dwarf_pubnames_table::read_header): Compute end address of table.
	(Dwarf_pubnames_table::next_name): Return flag_byte.  Check
	for end of list by offset, not by offset == 0.
	(Dwarf_info_reader::do_read_string_table): Check for compressed
	debug sections.
	* gold/dwarf_reader.h (Dwarf_pubnames_table::Dwarf_pubnames_table):
	Initialize new data members.
	(Dwarf_pubnames_table::next_name): return flag_byte.
	(Dwarf_pubnames_table::end_of_table_): New data member.
	(Dwarf_pubnames_table::is_gnu_style_): New data member.
	* gold/gdb-index.cc (gdb_index_version): Update to version 7.
	(Gdb_index_info_reader::read_pubtable): Read flag_byte.
	(Gdb_index_info_reader::read_pubnames_and_pubtypes): Don't
	read skeleton type unit DIEs.
	(Gdb_index::add_symbol): Add flag_byte; adjust all callers.
	(Gdb_index::do_write): Write flag_byte.
	* gold/gdb-index.h (Gdb_index::add_symbol): Add flags parameter.
	(Gdb_index::Cu_vector): Store flags along with cu indexes.
	* gold/testsuite/gdb_index_test_3.sh: Allow versions 4-7.
	* gold/testsuite/gdb_index_test_comm.sh: Likewise.
2014-01-28 15:36:00 -08:00
Cary Coutant
0c075858c7 Use in-tree assembler for exception_x86_64_bnd_test.
gold/
	* testsuite/Makefile.am (exception_x86_64_bnd_test): Use in-tree
	assembler.
	* testsuite/Makefile.in: Regenerate.
2013-11-22 15:47:18 -08:00