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369 Commits

Author SHA1 Message Date
Rui Ueyama
50b7497e19 Align section header to a E::wordsize boundary 
Fixes https://github.com/rui314/mold/issues/80
 2021-07-08 15:58:55 +09:00
Rui Ueyama
84d9e4d5ac Fix regexp 2021-07-07 23:12:24 +09:00
Rui Ueyama
72cc07fb42
Merge pull request #83 from nehaljwani/dynsym-IFUNC 
Do not replace IFUNC with FUNC in .dynsym
 2021-07-07 21:48:15 +09:00
Rui Ueyama
6ae115ac69 Support R_AARCH_ABS{32,64} relocations 2021-07-07 21:06:18 +09:00
Nehal J Wani
1aec54efdb
Do not replace IFUNC with FUNC in .dynsym 
This is a partial revert of dd04357

Signed-off-by: Nehal J Wani <nehaljw.kkd1@gmail.com>
 2021-07-07 07:59:51 -04:00
Rui Ueyama
e3dccd0157 Add a test 2021-07-07 20:38:48 +09:00
Rui Ueyama
6d6df45a23 Fix definition of __GLOBAL_OFFSET_TABLE__ for AArch64 2021-07-07 12:51:23 +09:00
Rui Ueyama
d4a67f6f38 Disable an AArch64 test 2021-07-06 23:06:02 +09:00
Rui Ueyama
41497d7990 Support AARCH64 relocations 
With this change, mold can now create a "Hello world" program
for the AArch64 target.
 2021-07-06 22:24:48 +09:00
Nehal J Wani
be6d443bc8
[tests] Improve test for -spare-dynamic-tags 
The default size and offsets of the .dynamic section are not necessarily
same with different builds of clang. For example, some builds can make
clang pass --hash-style=gnu to the linker and some --hash-style=both.

This change updates the test to compute the difference in size of the
.dynamic section before and after using the flag -spare-dynamic-tags,
making it independent of the compiler build.

Signed-off-by: Nehal J Wani <nehaljw.kkd1@gmail.com>
 2021-07-03 22:35:42 -04:00
Rui Ueyama
accf96877f Add a stub for AArch64 
It can generate an executable, but generated executable won't run
correctly because we don't process relocations at all yet.
 2021-07-03 21:39:44 +09:00
Rui Ueyama
d502b6ec60 Initial AARCH64 support 2021-07-03 20:48:38 +09:00
Rui Ueyama
3c992c02ea
Merge pull request #72 from nehaljwani/fix-pie-test 
[tests] Fix pie test when cc isn't built with --enable-default-pie
 2021-07-03 14:30:05 +09:00
Rui Ueyama
2abca8b5c1 Fix tests for non-Ubuntu-20 systems 
Fixes https://github.com/rui314/mold/issues/67
 2021-07-03 14:26:38 +09:00
Nehal J Wani
3208ceaac6
[tests] Fix pie test when cc isn't built with --enable-default-pie 
mold: /__w/mold/mold/test/tmp/pie/a.o:(.text): R_X86_64_32 relocation
       against symbol `.rodata' can not be used; recompile with -fPIE
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Signed-off-by: Nehal J Wani <nehaljw.kkd1@gmail.com>
 2021-07-03 01:05:28 -04:00
Rui Ueyama
475fad3a78 Allow sysroot to be a relative path 
Chromium cannot be built with out this patch.
 2021-07-03 12:02:32 +09:00
Rui Ueyama
0fd62ce693 Fix sysroot handling 
Fix https://github.com/rui314/mold/issues/59
 2021-07-01 17:40:45 +09:00
Rui Ueyama
9abfeee0e3 Split a function and add tests 2021-07-01 10:00:08 +09:00
Rui Ueyama
6432114e2a Fix handling of --sysroot 
Fixes https://github.com/rui314/mold/issues/59
 2021-06-30 22:15:19 +09:00
Rui Ueyama
989f69fdc5 Do not apply version scripts to DSO symbols 
This is needed by Gentoo's dev-perl/Image-Imlib2-2.30.0-r1 package
because this fixes a mis-link issue of libbsd.
 2021-06-27 21:44:42 +09:00
Rui Ueyama
5761dbc399 Fix a broken test 2021-06-27 17:03:59 +09:00
Rui Ueyama
570a3556c5 Fix exported weak symbol 
This is needed by Gentoo's app-admin/filebeat-7.9.3 package.
 2021-06-27 12:37:14 +09:00
Rui Ueyama
4436e4a57d Improve error message for an attempt of LTO 2021-06-26 15:05:05 +09:00
Rui Ueyama
bd1b044afc Accept extern "C" in version script 
This is needed by Gentoo's dev-libs/opencl-clang-10.0.0.1-r1 package.
 2021-06-25 16:48:40 +09:00
Rui Ueyama
2e5088a001 Fix common symbol 
This is needed by Gentoo's sci-electronics/voacapl-0.7.6 package.
 2021-06-25 15:42:16 +09:00
Rui Ueyama
bd8059a366 Fix an issue that a .dynsym for PLT refers itself 2021-06-25 13:33:14 +09:00
Rui Ueyama
5046fae0cf Do not directly call imported functions 
This is needed by Gentoo's sci-libs/lapack-3.9.0-r1 package.
 2021-06-25 01:05:57 +09:00
Rui Ueyama
d9ecc2e3e6 Promote weak undefined symbols to weak dynamic symbols 
Previously, if a weak undefined symbol cannot be resolved within
an output of the linker, mold turned it into an absolute symbol
with value 0. However, other linkers export such symbols as a
weak dynamic symbol, so that the symbol gets another chance to be
resolved at runtime.

This patch implements the behavior.

This is needed by Gentoo's dev-libs/nsync-1.20.1 package.
 2021-06-25 00:44:35 +09:00
Rui Ueyama
fd1855a67b Make --version to exit immediately 
This is needed by Gentoo's dev-lang/spidermonkey-78.10.1 package,
as its configure script assumes that the linker exit normally
even if extra options are given after `--version`.
 2021-06-24 16:45:04 +09:00
Rui Ueyama
81dbbdda62 DSOs referenced by used DSOs are considered used 
This is needed by Gentoo's sys-cluster/ampi-0_pre20140616 package.
 2021-06-24 15:54:25 +09:00
Rui Ueyama
de668b125a Refactor 2021-06-24 15:50:08 +09:00
Rui Ueyama
dd04357363 Do not set STT_GNU_IFUNC to symbols .dynsym 
We should not set STT_GNU_IFUNC to symbols in .dynsym because
from the other ELF module's point of view, it doens't matter
whether a symbol is IFUNC or not.

This is needed by Gentoo's sci-mathematics/nauty-2.6.7 package.
 2021-06-21 10:32:30 +09:00
Rui Ueyama
f127281d05 Allow empty input files 
mmap(2) fails if you pass 0 as an argument for `length` parameter,
so this case has to be handled as a special case.

This is needed by Gentoo's media-plugins/calf-0.90.3-r1 package.
 2021-06-21 09:33:35 +09:00
Rui Ueyama
d3d056d27a Do not register common symbols as lazy symbols 
In other words, a linker shouldn't pull out an object file from an
archive to resolve an existing undefined or a common symbol with a
common symbol.

This is needed by Gentoo's app-arch/dump-0.4.47 package.
 2021-06-21 08:36:16 +09:00
Rui Ueyama
1bac9c7b8d Add -z nodump 
This is needed by Gentoo's sci-libs/indilib-1.8.9 package.
 2021-06-21 06:56:07 +09:00
Rui Ueyama
7a689d8361 Handle ar header alignment correctly 2021-06-20 21:29:10 +09:00
Rui Ueyama
4f92d7f19b Add -z origin 
This is needed by Gentoo's dev-ada/gnatcoll-bindings-2020-r1 package.
 2021-06-20 14:42:43 +09:00
Rui Ueyama
9519e4ce20 Change how to handle --unresolved-symbols=ignore 
Previously, we turned unresolved undefined symbols into dynamic
symbols. This patch changed the behavior so that such symbols
are turned into non-dynamic absolute symbols with value zero.

This change is needed by Gentoo's dev-libs/wayland-protocols-1.21
package.
 2021-06-20 14:31:36 +09:00
Rui Ueyama
793136a8f0 Give common symbols in archive files higher priority 
If an object file in an static archive contains a common symbol
that can be used to resolve an undefined symbol, mold now pulls
out that object file from the archive. Previously, we ignore such
common symbols.

Object files generated by a Fortran compiler often contain a lot of
common symbols, and this change makes a difference.

Fixes Gentoo's sci-astronomy/wcslib-7.3 package, which contains a
program written in Fortran.
 2021-06-19 21:42:21 +09:00
Rui Ueyama
1d16374763 Fix a test 2021-06-19 12:34:20 +09:00
Rui Ueyama
a0ecd0c8dc Add --unique=PATTERN 
This is needed by Gentoo's sys-fabric/infinipath-psm-3.2 package.
 2021-06-19 01:09:26 +09:00
Rui Ueyama
bd858faf94 Add --unresolved-symbols 
This is needed by Gentoo's dev-libs/wayland-protocols-1.21 package.
 2021-06-18 15:51:57 +09:00
Rui Ueyama
725834e0b1 Do not garbage-collect C-identifer sections 
This is needed for Gentoo's sys-fs/udev-245.5-r1 package.
 2021-06-18 12:57:12 +09:00
Rui Ueyama
37b88e3f5a Do not set executable bit for --relocatable outputs 2021-06-18 01:45:38 +09:00
Rui Ueyama
2203644a3b Fix section addresses 
This is needed for Gentoo's net-libs/nodejs-14.16.1 package.
 2021-06-17 23:48:31 +09:00
Rui Ueyama
e88dddb820 Add -z {text,notext,textoff] 2021-06-17 14:18:44 +09:00
Rui Ueyama
4e2b6fd315 Handle thin archives containing absolute paths 2021-06-17 14:18:44 +09:00
Rui Ueyama
22ca6bc288 Ignore --verbose 2021-06-17 14:18:44 +09:00
Rui Ueyama
59e971b61f Ignore empty symbol version 
This is needed for Gentoo's sys-fs/mhddfs packages.
 2021-06-16 22:41:50 +09:00
Rui Ueyama
e1a964acb2 Do not write duplicate entries to .dynsym 
Fixes Gentoo's sys-libs/slang package.
 2021-06-16 19:50:42 +09:00
Rui Ueyama
e7019ebf86 Add -z keep-text-section-prefix 2021-06-16 19:50:08 +09:00
Rui Ueyama
a715197be4 Export more symbols from executable if they could overwrite dso syms 2021-06-15 01:47:53 +09:00
Rui Ueyama
bc2ece0474 Fix --relocatable 2021-06-14 13:48:26 +09:00
Rui Ueyama
333843a33d Add --warn-unresolved-symbols and --error-unresolved-symbols 2021-06-14 00:04:07 +09:00
Rui Ueyama
4f31c22fac Fix output section name 2021-06-13 16:51:48 +09:00
Rui Ueyama
9cc309af75 Implement --relocatable 
Fixes https://github.com/rui314/mold/issues/46
 2021-06-11 21:57:43 +09:00
Rui Ueyama
98dbddaa77 Ignore .gnu.warning.* sections 2021-06-07 22:35:32 +09:00
Rui Ueyama
3324acafc5 Rename --icf to --icf=all for compatibility with lld and gold 2021-06-07 21:55:08 +09:00
Rui Ueyama
8bf21f9ea0 Report an error for unknown -z flags 2021-06-07 20:53:35 +09:00
Rui Ueyama
6d13fe2e7f Add -z muldefs as an alias to --allow-multiple-definition 2021-06-07 20:48:06 +09:00
Rui Ueyama
8833dcbcb0 Fix relocations for i386 PIC 2021-06-07 18:37:50 +09:00
Rui Ueyama
a0c3fcb1bb Do not put local symbols to .dynsym 2021-06-06 17:24:49 +09:00
Rui Ueyama
fc54693be5 Fix zlib-gnu-style compressed section decoding 2021-06-05 20:51:21 +09:00
Rui Ueyama
ee3b0293fd Rename an envvar 2021-06-04 20:32:58 +09:00
Rui Ueyama
6e7baef8d3 Set DT_RELACOUNT field 2021-06-04 20:04:30 +09:00
Rui Ueyama
b0b2406d84 Set the entry address to .text if entry point symbol is not defined 2021-06-04 15:30:32 +09:00
Rui Ueyama
b5c68b465e Revert "Change the default build-id size from 20 to 16 bytes" 
This reverts commit fe76210da6
because I misunderstood the actual default size of build-id
of the GNU linkers.
 2021-06-04 12:32:28 +09:00
Rui Ueyama
d3923b9f27 Weak symbols shouldn't keep as-needed DSOs 
If all references to an DSO are weak, the DSO shouldn't be considered
being used in terms of --as-needed. This is needed for GNU ld compatibility.
 2021-06-04 12:24:25 +09:00
Rui Ueyama
3fb870c80b Add --compress-debug-info=zlib-gnu 2021-06-03 23:57:06 +09:00
Rui Ueyama
fe76210da6 Change the default build-id size from 20 to 16 bytes 
GNU ld's default build-id size is 16.
 2021-06-03 22:14:55 +09:00
Rui Ueyama
f9e91aa391 Do not embed a library fullpath if it is given by -l 2021-06-01 15:15:25 +09:00
Rui Ueyama
1f3931fc9e Do not put non-alloc NOTE section into a PT_LOAD segment 
This bug caused a test failure of Gentoo's dev-lang/go-1.16.4
paackage. Specifically, `go tool dist test testshared` failed
due to this bug.
 2021-06-01 00:53:06 +09:00
Rui Ueyama
8219fdd688 Simplify input file priority 
This change is required to build Gentoo's net-libs/libtorrent-0.13.8-r1
package with FEATURES=test, e.g.

  $ FEATURES=test emerge net-libs/libtorrent
 2021-05-31 17:09:40 +09:00
Rui Ueyama
8940abf807 Sort .{init,fini}_array and .[cd]tors 2021-05-31 01:11:45 +09:00
Rui Ueyama
02fa969295 Place .ctors and .dtors into .init_array and .fini_array 
This change is needed to build Gentoo's dev-lang/gprolog-1.4.5,
which is the GNU Forth package. GNU Forth creates ELF objects
itself, and it still uses .ctors and .dtors as opposed to .init_array
and .fini_array.
 2021-05-30 22:05:07 +09:00
Rui Ueyama
ed98211a24 Allow to refer unversioned symbol within an object file 
Previously, mold couldn't handle an object file which contains
versioned symbol `foo@@SOME_VERSION` that also has an undefined
symbol `foo`. Now, `foo` is resolved to `foo@@SOME_VERSION`.

This change is required to build Gentoo's media-libs/alsa-lib-1.2.3.2-r1
package.
 2021-05-30 18:03:21 +09:00
Rui Ueyama
a2017e5d3a Skip incompatible library files 
This change is required to build Gentoo's net-libs/libtorrent-0.13.8-r1
package.
 2021-05-29 20:47:16 +09:00
Rui Ueyama
3cfbc0d66c Parallelize tests 2021-05-29 16:05:38 +09:00
Rui Ueyama
c805f7c087 Fix broken tests 2021-05-29 14:20:56 +09:00
Rui Ueyama
fbed89948c Add -R as an alias for -rpath 
This change is required to build Gentoo dev-erlang/stringprep package.
 2021-05-29 13:42:10 +09:00
Rui Ueyama
6b10fbd834 Add end, etext and edata symbols 2021-05-29 02:07:46 +09:00
Rui Ueyama
8fe15c8dc8 Make linker-synthesized symbols to overwrite other symbols 2021-05-29 00:31:40 +09:00
Rui Ueyama
de7ba9014f Add "GNU gold" to the --version string 
The configure script in Gentoo's dev-libs/jansson-2.13.1-r1 package
treats mold 0.1.1 as GNU ld 0.1.1, which is from 1980s if existed.

Adding "GNU gold" to the help message solves the nasty issue, as the
configure script considers any version of GNU gold supports modern
features.
 2021-05-27 15:24:30 +09:00
Rui Ueyama
310980fb7e Add --retain-symbols-file 2021-05-27 00:31:08 +09:00
Rui Ueyama
8dd0accc89 Do not exit immediately on --version 2021-05-23 18:22:20 +09:00
Rui Ueyama
3fab4ce3d2 Add missing dependencies 2021-05-23 16:20:55 +09:00
Rui Ueyama
a0a94f4637 Add -wrap option 2021-05-22 01:54:08 +09:00
Rui Ueyama
b9ab55dfa7 Add --image-base 2021-05-21 18:37:38 +09:00
Rui Ueyama
99abd52d6e Fix a broken test 2021-05-21 12:43:34 +09:00
Rui Ueyama
02e6c6ab5d Make -run to intercept not only ld but also ld.lld and ld.gold 2021-05-20 14:14:35 +09:00
Rui Ueyama
968cfd0dcd Simplify 2021-05-19 10:24:39 +09:00
Rui Ueyama
ad6aa32b41 Handle mold -run /usr/bin/ld 2021-05-14 22:55:04 +09:00
Rui Ueyama
76b0afc6b7 Add --omagic 2021-05-10 19:21:29 +09:00
Rui Ueyama
6014faec2a Add -V option 2021-05-10 16:53:16 +09:00
Rui Ueyama
4a3480e1af readlink() doesn't terminate a string with NUL 2021-05-10 16:40:51 +09:00
Rui Ueyama
ccd27807aa Do not add unreferenced DSO symbols to .dynsym 2021-05-10 15:50:25 +09:00
Rui Ueyama
033834a28e Add --help 2021-05-08 20:10:41 +09:00
Rui Ueyama
13003d2479 Add --compress-debug-sections 2021-05-06 17:20:07 +09:00
Rui Ueyama
ebe6cca2e6 Create a .repro section if MOLD_REPRO environment variable is set 2021-05-02 20:49:00 +09:00
Rui Ueyama
d11c383147 Replace --reproduce with --repro 2021-05-02 20:49:00 +09:00