History log of /art/runtime/elf_file_impl.h
Revision Date Author Comments
0b4cbd0c2a75b47ae09d21e5d73d2b1709cb5b9e 09-Mar-2016 Mathieu Chartier <mathieuc@google.com> Add oatdump support for app images

Example usage on host:
oatdumpd --app-oat=art/plus32.odex --app-image=art/plus32.art
--image=art/oats/system@framework@boot.art --instruction-set=arm

TODO: Add to oatdump test.

Bug: 27408512
Bug: 22858531

(cherry picked from commit bcb6a72569a1401b36a3ad3b6aa4d13e29966cf0)

Change-Id: I9d1aa7eaa16795e5fbabc6974d245849e16b1d03
bcb6a72569a1401b36a3ad3b6aa4d13e29966cf0 09-Mar-2016 Mathieu Chartier <mathieuc@google.com> Add oatdump support for app images

Example usage on host:
oatdumpd --app-oat=art/plus32.odex --app-image=art/plus32.art
--image=art/oats/system@framework@boot.art --instruction-set=arm

TODO: Add to oatdump test.

Bug: 27408512
Bug: 22858531

Change-Id: I320db8b76c780c6eadabcb45ce88f45950741484
5d55d9ac7fc2fbdbdda49777d83fd4fa8303da28 11-Jan-2016 David Srbecky <dsrbecky@google.com> Remove ElfFile::GdbJITSupport

This method notified gdb about loaded ELF file.
Since we use dlopen to load the ELF file now, it should not be needed.

Note that the method had nothing to do with JIT compiler.

Change-Id: I967495c39e42112023a495ce5fac25b97669d1d5
a26cb57f46fd3f27a930d9d688fe8670c1f24754 23-Apr-2015 David Srbecky <dsrbecky@google.com> ART stack unwinding fixes for libunwind/gdb/lldb.

dex2oat can already generate unwinding and symbol information which
allows tools to create backtrace of mixed native and Java code.

This is a cherry pick from aosp/master which fixes several issues.
Most notably:
* It enables generation of ELF-64 on 64-bit systems (in dex2oat, C
compilers already produce ELF-64). Libunwind requires ELF-64 on
64-bit systems for backtraces to work.
* It enables loading of ELF files with dlopen. This is required for
libunwind to be able to generate backtrace of current process (i.e.
the process requesting backtrace of itself).
* It adds unit test to test the above (32 vs 64 bit, in-proces vs
out-of-process, application code vs framework code).
* Some other fixes or clean-ups which should not be of much
significance but which are easier to include to make the
important CLs cherry-pick cleanly.

This is squash of the following commits from aosp/master:
7381010 ART: CFI Test
e1bbed2 ART: Blacklist CFI test for non-compiled run-tests
aab9f73 ART: Blacklist CFI test for JIT
4437219 ART: Blacklist CFI test for Heap Poisoning
a3a49fe Switch to using ELF-64 for 64-bit architectures.
297ed22 Write 64-bit address in DWARF if we are on 64-bit architecture.
24981a1 Set correct size of PT_PHDR ELF segment.
1a146bf Link .dynamic to .dynstr
67a0653 Make some parts of ELF more (pointer) aligned.
f50fa82 Enable 64-bit CFI tests.
49e1fab Use dlopen to load oat files.
5dedb80 Add more logging output for dlopen.
aa03870 Find the dlopened file using address rather than file path.
82e73dc Release dummy MemMaps corresponding to dlopen.
5c40961 Test that we can unwind framework code.
020c543 Add more log output to the CFI test.
88da3b0 ART: Fix CFI test wrt/ PIC
a70e5b9 CFI test: kill the other process in native code.
ad5fa8c Support generation of CFI in .debug_frame format.
90688ae Fix build - large frame size of ElfWriterQuick<ElfTypes>::Write.
97dabb7 Fix build breakage in dwarf_test.
388d286 Generate just single ARM mapping symbol.
f898087 Split .oat_patches to multiple sections.
491a7fe Fix build - large frame size of ElfWriterQuick<ElfTypes>::Write (again).
8363c77 Add --generate-debug-info flag and remove the other two flags.
461d72a Generate debug info for core.oat files.

Bug: 21924613
Change-Id: I3f944a08dd2ed1df4d8a807da4fee423fdd35eb7
f8980875ef8fb0ce86be4ed2c0af7070f5ae9cfd 22-May-2015 David Srbecky <dsrbecky@google.com> Split .oat_patches to multiple sections.

.oat_patches section currently contains encoded patch locations for
several other sections. Split it to several sections - one for each
of the destination sections. For example, .text.oat_patches section
contains patch locations for the .text section.

This ensures that if we strip some the sections using standard
tools, we strip the corresponding .oat_patches section as well.

It also makes the overall design simpler.
I should have done it this way in the first place.

Since ApplyOatPatches has been simplified and uses unaligned memory
access, this also fixes bug 21403573.

Bug:20556771
Bug:21403573
Change-Id: Iae7c423911507b524eec500e8d61744046fcd3ba
a36098b3717e14baf6a173e72082f6ef3b7bcefd 13-May-2015 Vladimir Marko <vmarko@google.com> ART: Do not relocate app program headers in patchoat.

Change the check whether to relocate program headers in
patchoat to simply look whether there is a PT_LOAD section
with p_vaddr == 0. If there is, don't relocate the headers,
it should be an app. Otherwise, it's a boot image and needs
to be relocated.

Add overflow checking to ElfFileImpl<>::GetLoadedSize().

Bug: 21047854

(cherry picked from commit 3fc9903407c6e89ffbbc92ded9e272d9de58e9b6)

Change-Id: Ib3e1295fc06993bcfbaadd8f253ee4f5498f52e9
3fc9903407c6e89ffbbc92ded9e272d9de58e9b6 13-May-2015 Vladimir Marko <vmarko@google.com> ART: Do not relocate app program headers in patchoat.

Change the check whether to relocate program headers in
patchoat to simply look whether there is a PT_LOAD section
with p_vaddr == 0. If there is, don't relocate the headers,
it should be an app. Otherwise, it's a boot image and needs
to be relocated.

Add overflow checking to ElfFileImpl<>::GetLoadedSize().

Bug: 21047854
Change-Id: Ie6737f338687296b6dbf4bb3b36358501dfb1587
2cebb24bfc3247d3e9be138a3350106737455918 22-Apr-2015 Mathieu Chartier <mathieuc@google.com> Replace NULL with nullptr

Also fixed some lines that were too long, and a few other minor
details.

Change-Id: I6efba5fb6e03eb5d0a300fddb2a75bf8e2f175cb
533c207f9d2da6d913c4b10f6f757fe9d6367b10 22-Apr-2015 David Srbecky <dsrbecky@google.com> Simplify template parameters of Elf classes.

The ELF specification defines several types which differ between
32-bit ELF and 64-bit ELF. We used to template all ELF-related
methods on all of those types which was very verbose.

This CL wraps all the types as typedefs in ElfTypes32 and ElfTypes64.
One of those wrappers is then used as the template parameter.

Change-Id: I65247c2c79d92a7c4799e988cf3e4a1b10eb4788
2f6cdb01f74772c1c521a125776ef57ea3c73d43 11-Apr-2015 David Srbecky <dsrbecky@google.com> Relocate DWARF using .oat_patches.

The current solution is to hard-code knowledge of DWARF in the linker.
This works for simple use of DWARF, but breaks as soon as I try to do
anything more complex. Making the linker fully support DWARF would be
non-trivial task and would be essentially rewrite. Using .oat_patches
is much easier solution.

Relocating .debug_* sections required extending .oat_patches to support
more sections than just .text. I have encoded each section as
null-terminated section name followed by ULEB128 deltas.

The ULEB128 encoding shrinks .oat_patches for .text by factor of
about 6 with 64-bit compiler, and factor of 3 with 32-bit compiler.

On the other hand, it grows by the extra .oat_patches for DWARF which
were not present before (if debug symbols are included).

Overall, it is still a clear improvement even with the DWARF patches.

Change-Id: I78ffeda0f8a3da03341995a3b5ef15c954e16e9f
3c54b0023fca579aae006dfa607fb14de5846c42 08-Apr-2015 Andreas Gampe <agampe@google.com> ART: Fix 64-bit ELF file support

The API wasn't cross-compile-safe, 32-bit patchoat would fail for
negative delta applied to a 64-bit ELF file.

Add 64-bit ELF file output to the compilers, behind a flag, currently
off by default (preserving current behavior).

Bug: 20095017
Change-Id: I2cde7b4c7cc83413c76692d7b745868d644a604c
46774767fcf7780d1455e755729198648d08742e 22-Oct-2014 Igor Murashkin <iam@google.com> ART: Add support for patching and loading OAT files compiled with PIC

* Images (.art) compiled with pic now have a new field added.
* isDexOptNeeded will now skip patch-ing for apps compiled PIC
* First-boot patching now only copies boot.art, boot.oat is linked

As a result, all system preopted dex files (with --compile-pic) no
longer take up any space in /data/dalvik-cache/<isa>.

Bug: 18035729
Change-Id: Ie1acad81a0fd8b2f24e1f3f07a06e6fdb548be62
d4c4d953035d4418126d36517e402f411d6a87f3 17-Oct-2014 Ian Rogers <irogers@google.com> Some code clean-up.

Change-Id: I4b745fd5298cd61c793e3b57514b48347bd66c0e
13735955f39b3b304c37d2b2840663c131262c18 08-Oct-2014 Ian Rogers <irogers@google.com> stdint types all the way!

Change-Id: I4e4ef3a2002fc59ebd9097087f150eaf3f2a7e08
62d1ca3182a6cbb921799825f43ad36821233fd7 04-Sep-2014 Tong Shen <endlessroad@google.com> ART: Prepare for ELF64.

Only expose necessary interface in ElfFile, and move all details into template class ElfFileImpl.

Change-Id: I9df2bbc55f32ba0ba91f4f3d5d0009e84a2ddf74