151411f8af
This patch adds --compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}
options to gas and objcopy for ELF files. They control how DWARF debug
sections are compressed. --compress-debug-sections=none is equivalent to
--nocompress-debug-sections. --compress-debug-sections=zlib and
--compress-debug-sections=zlib-gnu are equivalent to
--compress-debug-sections. --compress-debug-sections=zlib-gabi compresses
DWARF debug sections with SHF_COMPRESSED from the ELF ABI. No linker
changes are required to support SHF_COMPRESSED.
bfd/
* archive.c (_bfd_get_elt_at_filepos): Also copy BFD_COMPRESS_GABI
bit.
* bfd.c (bfd::flags): Increase size to 18 bits.
(BFD_COMPRESS_GABI): New.
(BFD_FLAGS_SAVED): Add BFD_COMPRESS_GABI.
(BFD_FLAGS_FOR_BFD_USE_MASK): Likewise.
(bfd_update_compression_header): New fuction.
(bfd_check_compression_header): Likewise.
(bfd_get_compression_header_size): Likewise.
(bfd_is_section_compressed_with_header): Likewise.
* compress.c (MAX_COMPRESSION_HEADER_SIZE): New.
(bfd_compress_section_contents): Return the uncompressed size if
the full section contents is compressed successfully. Support
converting from/to .zdebug* sections.
(bfd_get_full_section_contents): Call
bfd_get_compression_header_size to get compression header size.
(bfd_is_section_compressed): Renamed to ...
(bfd_is_section_compressed_with_header): This. Add a pointer
argument to return compression header size.
(bfd_is_section_compressed): Use it.
(bfd_init_section_decompress_status): Call
bfd_get_compression_header_size to get compression header size.
Return FALSE if uncompressed section size is 0.
* elf.c (_bfd_elf_make_section_from_shdr): Support converting
from/to .zdebug* sections.
* bfd-in2.h: Regenerated.
binutils/
* objcopy.c (do_debug_sections): Add compress_zlib,
compress_gnu_zlib and compress_gabi_zlib.
(copy_options): Use optional_argument on compress-debug-sections.
(copy_usage): Update --compress-debug-sections.
(copy_file): Handle compress_zlib, compress_gnu_zlib and
compress_gabi_zlib.
(copy_main): Handle
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* doc/binutils.texi: Document
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
binutils/testsuite/
* compress.exp: Add tests for
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* binutils-all/dw2-3.rS: New file.
* binutils-all/dw2-3.rt: Likewise.
* binutils-all/libdw2-compressedgabi.out: Likewise.
gas/
* as.c (show_usage): Update --compress-debug-sections.
(std_longopts): Use optional_argument on compress-debug-sections.
(parse_args): Handle
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* as.h (compressed_debug_section_type): New.
(flag_compress_debug): Change type to compressed_debug_section_type.
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* write.c (compress_debug): Set BFD_COMPRESS_GABI for
--compress-debug-sections=zlib-gabi. Call
bfd_get_compression_header_size to get compression header size.
Don't rename section name for --compress-debug-sections=zlib-gabi.
* config/tc-i386.c (compressed_debug_section_type): Set to
COMPRESS_DEBUG_ZLIB.
* doc/as.texinfo: Document
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
gas/testsuite/
* gas/i386/dw2-compressed-1.d: New file.
* gas/i386/dw2-compressed-2.d: Likewise.
* gas/i386/dw2-compressed-3.d: Likewise.
* gas/i386/x86-64-dw2-compressed-2.d: Likewise.
* gas/i386/i386.exp: Run dw2-compressed-2, dw2-compressed-1,
dw2-compressed-3 and x86-64-dw2-compressed-2.
ld/testsuite/
* ld-elf/compress.exp: Add a test for
--compress-debug-sections=zlib-gabi.
(build_tests): Add 2 tests for --compress-debug-sections=zlib-gabi.
(run_tests): Likewise.
Verify linker output with zlib-gabi compressed debug input.
* ld-elf/compressed1a.d: New file.
* ld-elf/compressed1b.d: Likewise.
* ld-elf/compressed1c.d: Likewise.
81 lines
2.8 KiB
Text
81 lines
2.8 KiB
Text
# Expect script for ELF compressed debug section tests.
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# Copyright (C) 2010-2015 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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# Exclude non-ELF targets.
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if ![is_elf_format] {
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return
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}
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# The following tests require running the executable generated by ld.
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if ![isnative] {
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return
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}
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# Check if compiler works
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if { [which $CC] == 0 } {
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return
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}
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global as
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if { ![ld_assemble $as "--compress-debug-sections $srcdir/$subdir/empty.s" tmpdir/empty.o ] } {
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fail "linker compressed debug sections"
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}
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if { ![ld_assemble $as "--compress-debug-sections=zlib-gabi $srcdir/$subdir/empty.s" tmpdir/emptyzlib.o ] } {
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fail "linker compressed debug sections"
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}
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set build_tests {
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{"Build libfoo.so with compressed debug sections"
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"-shared" "-fPIC -g -Wa,--compress-debug-sections"
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{foo.c} {} "libfoo.so"}
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{"Build libbar.so with compressed debug sections"
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"-shared" "-fPIC -g -Wa,--compress-debug-sections"
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{begin.c end.c} {} "libbar.so"}
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{"Build libfoozlib.so with compressed debug sections with zlib-gabi"
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"-shared" "-fPIC -g -Wa,--compress-debug-sections=zlib-gabi"
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{foo.c} {} "libfoozlib.so"}
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{"Build libbarzlib.so with compressed debug sections with zlib-gabi"
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"-shared" "-fPIC -g -Wa,--compress-debug-sections=zlib-gabi"
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{begin.c end.c} {} "libbarzlib.so"}
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}
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set run_tests {
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{"Run normal with libfoo.so with compressed debug sections"
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"tmpdir/begin.o tmpdir/libfoo.so tmpdir/end.o" ""
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{main.c} "normal" "normal.out" "-Wa,--compress-debug-sections"}
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{"Run normal with libfoo.so with compressed debug sections with zlib-gabi"
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"tmpdir/begin.o tmpdir/libfoozlib.so tmpdir/end.o" ""
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{main.c} "normal" "normal.out" "-Wa,--compress-debug-sections=zlib-gabi"}
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}
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run_cc_link_tests $build_tests
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run_ld_link_exec_tests [] $run_tests
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set test_name "Link with zlib-gabi compressed debug input"
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send_log "cmp tmpdir/libfoo.so tmpdir/libfoozlib.so\n"
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if { [catch {exec cmp tmpdir/libfoo.so tmpdir/libfoozlib.so}] } then {
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send_log "tmpdir/libfoo.so tmpdir/libfoozlib.so differ.\n"
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fail "$test_name"
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} else {
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pass "$test_name"
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}
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