Commit Graph

187 Commits

Author SHA1 Message Date
Petr Hosek 5c469a3daa [yaml2obj][ELF] Add support for symbol indexes greater than SHN_LORESERVE
Right now Symbols must be either undefined or defined in a specific
section. Some symbols have section indexes like SHN_ABS however. This
change adds support for outputting symbols that have such section
indexes.

Patch by Jake Ehrlich

Differential Revision: https://reviews.llvm.org/D37391

llvm-svn: 312745
2017-09-07 20:44:16 +00:00
Sam Clegg 13a2e89926 [WebAssembly] Update relocation names to match spec
Summary: See https://github.com/WebAssembly/tool-conventions/blob/master/Linking.md

Differential Revision: https://reviews.llvm.org/D37385

llvm-svn: 312342
2017-09-01 17:32:01 +00:00
Petr Hosek 5aa80f1663 [yaml2obj][ELF] Make symbols optional for relocations
Some kinds of relocations do not have symbols, like R_X86_64_RELATIVE
for instance. I would like to test this case in D36554 but currently
can't because symbols are required by yaml2obj. The other option is
using the empty symbol but that doesn't seem quite right to me.

This change makes the Symbol field of Relocation optional and in the
case where the user does not specify a symbol name the Symbol index is 0.

Patch by Jake Ehrlich

Differential Revision: https://reviews.llvm.org/D37276

llvm-svn: 312192
2017-08-30 23:13:31 +00:00
Petr Hosek eb04da3a56 [yaml2obj][ELF] Add support for program headers
This change adds basic support for program headers.

I need to do some testing which requires generating program headers but
I can't use ld.lld or clang to produce programs that have headers. I'd
also like to test some strange things that those programs may never
produce.

Patch by Jake Ehrlich

Differential Revision: https://reviews.llvm.org/D35276

llvm-svn: 308520
2017-07-19 20:38:46 +00:00
Sam Clegg 9c07f94a1f [WebAssembly] Expose the offset of each data segment
Summary:
This allows tools like lld that process relocations
to apply data relocation correctly. This information
is required because relocation are stored as section
offset.

Subscribers: jfb, dschuff, jgravelle-google, aheejin

Differential Revision: https://reviews.llvm.org/D35234

llvm-svn: 307741
2017-07-12 00:24:54 +00:00
Sam Clegg 9e1ade93a8 [WebAssembly] Add data size and alignement to linking section
The overal size of the data section (including BSS)
is otherwise not included in the wasm binary.

Differential Revision: https://reviews.llvm.org/D34657

llvm-svn: 306459
2017-06-27 20:27:59 +00:00
Sam Clegg b7787fd076 [WebAssembly] Add support for weak symbols in the binary format
This also introduces the updated format for the
"linking" section which can represent extra
symbol information.  See:
https://github.com/WebAssembly/tool-conventions/pull/10

Differential Revision: https://reviews.llvm.org/D34019

llvm-svn: 305769
2017-06-20 04:04:59 +00:00
Zachary Turner 948a596617 Try to fix uninitialized read reported by msan.
llvm-svn: 305528
2017-06-15 23:44:19 +00:00
Zachary Turner a8cfc29c9a Resubmit "[codeview] Make obj2yaml/yaml2obj support .debug$S..."
This was originally reverted because of some non-deterministic
failures on certain buildbots.  Luckily ASAN eventually caught
this as a stack-use-after-scope, so the fix is included in
this patch.

llvm-svn: 305393
2017-06-14 15:59:27 +00:00
Zachary Turner 0085dce221 Revert "[codeview] Make obj2yaml/yaml2obj support .debug$S..."
This is causing failures on linux bots with an invalid stream
read.  It doesn't repro in any configuration on Windows, so
reverting until I have a chance to investigate on Linux.

llvm-svn: 305371
2017-06-14 06:24:24 +00:00
Zachary Turner 6bffe44659 Fix some more errors.
llvm-svn: 305368
2017-06-14 05:44:38 +00:00
Zachary Turner a3da4467fa [codeview] Make obj2yaml/yaml2obj support .debug$S/T sections.
This allows us to use yaml2obj and obj2yaml to round-trip CodeView
symbol and type information without having to manually specify the bytes
of the section. This makes for much easier to maintain tests. See the
tests under lld/COFF in this patch for example. Before they just said
SectionData: <blob> whereas now we can use meaningful record
descriptions. Note that it still supports the SectionData yaml field,
which could be useful for initializing a section to invalid bytes for
testing, for example.

Differential Revision: https://reviews.llvm.org/D34127

llvm-svn: 305366
2017-06-14 05:31:00 +00:00
Zachary Turner 264b5d9e88 Move Object format code to lib/BinaryFormat.
This creates a new library called BinaryFormat that has all of
the headers from llvm/Support containing structure and layout
definitions for various types of binary formats like dwarf, coff,
elf, etc as well as the code for identifying a file from its
magic.

Differential Revision: https://reviews.llvm.org/D33843

llvm-svn: 304864
2017-06-07 03:48:56 +00:00
Sam Clegg 41db519ba6 [WebAssembly] Fix build error in wasm YAML code
This warning didn't show up on my local build
but is causing the bots to fail.  Seems like a
bad idea to have types and variables with the
same name anyhow.

Differential Revision: https://reviews.llvm.org/D33022

llvm-svn: 302606
2017-05-10 00:14:04 +00:00
Sam Clegg 2ffff5af85 [WebAssembly] Improve libObject support for wasm imports and exports
Previously we had only supported the importing and
exporting of functions and globals.

Also, add usefull overload of getWasmSymbol() and
getNumberOfSymbols() in support of lld port.

Differential Revision: https://reviews.llvm.org/D33011

llvm-svn: 302601
2017-05-09 23:48:41 +00:00
Sam Clegg 03cdd1241f [WebAssembly] Add ObjectYAML support for wasm name section
Differential Revision: https://reviews.llvm.org/D32841

llvm-svn: 302266
2017-05-05 18:12:34 +00:00
Davide Italiano dfeea506c0 [yaml2obj] Factor out error handling code.
llvm-svn: 299551
2017-04-05 15:18:16 +00:00
Davide Italiano 91f00258be [yaml2obj] Improve error message when output file cannot be opened.
Patch by Sam Clegg!

Differential Revision:  https://reviews.llvm.org/D31351

llvm-svn: 299546
2017-04-05 14:44:00 +00:00
Derek Schuff d3d84fdda1 [WebAssembly] Improve support for WebAssembly binary format
Mostly this change adds support converting to and from
YAML which will allow us to write more test cases for
the WebAssembly MC and lld ports.

Better support for objdump, readelf, and nm will be in
followup CLs.

I had to update the two wasm test binaries because they
used the old style 'name' section which is no longer
supported.

Differential Revision: https://reviews.llvm.org/D31099

Patch by Sam Clegg

llvm-svn: 299101
2017-03-30 19:44:09 +00:00
Steven Wu 5b54a42c0f Add LC_BUILD_VERSION load command
Summary:
Add a new load command LC_BUILD_VERSION. It is a generic version of
LC_*_VERSION_MIN load_command used on Apple platforms. Instead of having
a seperate load command for each platform, LC_BUILD_VERSION is recording
platform info as an enum. It also records SDK version, min_os, and tools
that used to build the binary.

rdar://problem/29781291

Reviewers: enderby

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D29044

llvm-svn: 292824
2017-01-23 20:07:55 +00:00
Chris Bieneman 07088c1060 [ObjectYAML] Pull yaml2dwarf out of yaml2obj for reuse
This patch pulls the yaml2dwarf code out of yaml2obj into a new set of DWARF emitter functions in the DWARFYAML namespace. This will enable the YAML->DWARF code to be used inside DWARF tests by populating the DWARFYAML structs and calling the Emitter functions.

llvm-svn: 291828
2017-01-12 21:35:21 +00:00
Chris Bieneman 1b7200d2cf [ObjectYAML] Support for DWARF line tables
One more try... relanding r291541 with a fix to properly gate MaxOpsPerInst on DWARF version.

Description from r291541:

This patch re-lands r291470, which failed on Linux bots. The issue (I believe) was undefined behavior because the size of llvm::dwarf::LineNumberOps was not explcitly specified or consistently respected. The updated patch adds an explcit underlying type to the enum and preserves the size more correctly.

Original description:

This patch adds support for the DWARF debug_lines section. The line table state machine opcodes are preserved, so this can be used to test the state machine evaluation directly.

llvm-svn: 291546
2017-01-10 06:22:49 +00:00
Chris Bieneman e6663d376e Revert "[ObjectYAML] Support for DWARF line tables"
This reverts commit r291541.

Still failing on a bot:

http://bb.pgr.jp/builders/cmake-llvm-x86_64-linux/builds/47224/steps/test_llvm/logs/stdio

llvm-svn: 291542
2017-01-10 05:31:23 +00:00
Chris Bieneman 07ab0aa5d6 [ObjectYAML] Support for DWARF line tables
This patch re-lands r291470, which failed on Linux bots. The issue (I believe) was undefined behavior because the size of llvm::dwarf::LineNumberOps was not explcitly specified or consistently respected. The updated patch adds an explcit underlying type to the enum and preserves the size more correctly.

Original description:

This patch adds support for the DWARF debug_lines section. The line table state machine opcodes are preserved, so this can be used to test the state machine evaluation directly.

llvm-svn: 291541
2017-01-10 05:25:24 +00:00
Chris Bieneman e62e684fdd Revert "[ObjectYAML] Support for DWARF line tables"
This reverts commit r291470 due to failing bots:

http://bb.pgr.jp/builders/cmake-llvm-x86_64-linux/builds/47209/steps/test_llvm/logs/stdio

llvm-svn: 291471
2017-01-09 20:04:55 +00:00
Chris Bieneman 0396f99184 [ObjectYAML] Support for DWARF line tables
This patch adds support for the DWARF debug_lines section. The line table state machine opcodes are preserved, so this can be used to test the state machine evaluation directly.

llvm-svn: 291470
2017-01-09 20:01:37 +00:00
Chris Bieneman 7e98468f1e [ObjectYAML] Fixing a compiler warning
Accidentally re-defined the variable instead of setting it. Oops!

llvm-svn: 290388
2016-12-22 22:58:07 +00:00
Chris Bieneman e0e451d927 [ObjectYAML] Support for DWARF debug_info section
This patch adds support for YAML<->DWARF for debug_info sections.

This re-lands r290147, reverted in 290148, re-landed in r290204 after fixing the issue that caused bots to fail (thank you UBSan!), and reverted again in r290209 due to failures on big endian systems.

After adding support for preserving endianness, this should be good now.

llvm-svn: 290386
2016-12-22 22:44:27 +00:00
Chris Bieneman e477fb9591 [ObjectYAML] Fixing big endian bots from r290381
Bot URL:
http://lab.llvm.org:8011/builders/clang-s390x-linux/builds/2505

llvm-svn: 290383
2016-12-22 22:16:04 +00:00
Chris Bieneman 55de3a2449 [ObjectYAML] MachO support for endianness
This patch adds support to the macho<->yaml tools for preserving endianness in MachO structures and DWARF data.

llvm-svn: 290381
2016-12-22 21:58:03 +00:00
Chris Bieneman abecaa2f8c Revert "[ObjectYAML] Support for DWARF debug_info section"
This reverts commit r290204.

Still breaking bots... In a meeting now, so I can't fix it immediately.

Bot URL:
http://lab.llvm.org:8011/builders/clang-s390x-linux/builds/2415

llvm-svn: 290209
2016-12-20 22:36:42 +00:00
Chris Bieneman ffc4aef542 [ObjectYAML] Support for DWARF debug_info section
This patch adds support for YAML<->DWARF for debug_info sections.

This re-lands r290147, after fixing the issue that caused bots to fail (thank you UBSan!).

llvm-svn: 290204
2016-12-20 21:35:31 +00:00
Chris Bieneman 891cbcc093 Revert "[ObjectYAML] Support for DWARF debug_info section"
This reverts commit r290147.

This commit is breaking a bot (http://lab.llvm.org:8011/builders/clang-atom-d525-fedora-rel/builds/621). I don't have time to investigate at the moment, so I'll revert for now.

llvm-svn: 290148
2016-12-20 00:42:06 +00:00
Chris Bieneman b5b0b23a25 [ObjectYAML] Support for DWARF debug_info section
This patch adds support for YAML<->DWARF for debug_info sections.

llvm-svn: 290147
2016-12-20 00:26:24 +00:00
Chris Bieneman d9430944f4 [ObjectYAML] Support for DWARF Pub Sections
This patch adds support for YAML<->DWARF round tripping for pub* section data. The patch supports both GNU and non-GNU style entries.

llvm-svn: 290139
2016-12-19 22:22:12 +00:00
Chris Bieneman 7495a4895c clang-format to fix post-commit feedback
Thanks dblaikie!

llvm-svn: 289485
2016-12-12 23:05:15 +00:00
Chris Bieneman 313b326bb6 [ObjectYAML] Support for DWARF debug_aranges
This patch adds support for round tripping DWARF debug_aranges in and out of YAML.

llvm-svn: 289161
2016-12-09 00:26:44 +00:00
Chris Bieneman fbf7dfe1ba [ObjectYAML] Remove DWARF from class names
Since all the DWARF classes are in a DWARFYAML namespace having every class start with DWARF seems like a bit of overkill.

llvm-svn: 289080
2016-12-08 17:46:57 +00:00
Chris Bieneman 7d7364ab4f [yaml2obj] Refactor and abstract yaml2dwarf functions
This abstracts the code for emitting DWARF binary from the DWARFYAML types into reusable interfaces that could be used by ELF and COFF.

llvm-svn: 288990
2016-12-07 22:30:15 +00:00
Chris Bieneman c6c0e54d3d [ObjectYAML] Support for DWARF __debug_abbrev section
This patch adds support for round-tripping DWARF debug abbreviations through the obj<->yaml tools.

llvm-svn: 288955
2016-12-07 18:52:59 +00:00
Chris Bieneman 8b058aec1d [ObjectYAML] First bit of support for encoding DWARF in MachO
This patch adds the starting support for encoding data from the MachO __DWARF segment. The first section supported is the __debug_str section because it is the simplest.

llvm-svn: 288774
2016-12-06 06:00:49 +00:00
Rafael Espindola 39751afc4e Misc improvements to StringTableBuilder.
This patch adds write methods to StringTableBuilder so that it is
easier to change the underlying implementation.

Using the write methods, avoid creating a temporary buffer when using
mmaped output.

It also uses a more compact key in the DenseMap. Overall this produces
a slightly faster lld:

firefox
  master 6.853419709
  patch  6.841968912 1.00167361138x faster
chromium
  master 4.297280174
  patch  4.298712163 1.00033323147x slower
chromium fast
  master 1.802335952
  patch  1.806872459 1.00251701521x slower
the gold plugin
  master 0.3247149
  patch  0.321971644 1.00852017888x faster
clang
  master 0.551279945
  patch  0.543733194 1.01387951128x faster
llvm-as
  master 0.032743458
  patch  0.032143478 1.01866568391x faster
the gold plugin fsds
  master 0.350814247
  patch  0.348571741 1.00643341309x faster
clang fsds
  master 0.6281672
  patch  0.621130222 1.01132931187x faster
llvm-as fsds
  master 0.030168899
  patch  0.029797155 1.01247582194x faster
scylla
  master 3.104222518
  patch  3.059590248 1.01458766252x faster

llvm-svn: 283266
2016-10-04 22:43:25 +00:00
Rafael Espindola 9ddfb04d03 Revert "Use getSize instead of data().size(). NFC."
This reverts commit r283125.

lld needs to be updated.

llvm-svn: 283127
2016-10-03 18:01:10 +00:00
Rafael Espindola 4bb425e848 Use getSize instead of data().size(). NFC.
Also assert isFinalized in getSize(). This just reduces the noise from
another patch.

llvm-svn: 283125
2016-10-03 17:49:19 +00:00
Chris Bieneman 8ff0c11357 [yaml2obj] Remove --format option in favor of YAML tags
Summary:
Our YAML library's handling of tags isn't perfect, but it is good enough to get rid of the need for the --format argument to yaml2obj. This patch does exactly that.

Instead of requiring --format, it infers the format based on the tags found in the object file. The supported tags are:

!ELF
!COFF
!mach-o
!fat-mach-o

I have a corresponding patch that is quite large that fixes up all the in-tree test cases.

Reviewers: rafael, Bigcheese, compnerd, silvas

Subscribers: compnerd, llvm-commits

Differential Revision: http://reviews.llvm.org/D21711

llvm-svn: 273915
2016-06-27 19:53:53 +00:00
Chris Bieneman 93e7119380 [obj2yaml] [yaml2obj] Support for MachO Universal binaries
This patch adds round-trip support for MachO Universal binaries to obj2yaml and yaml2obj. Universal binaries have a header and list of architecture structures, followed by a the individual object files at specified offsets.

llvm-svn: 273719
2016-06-24 20:42:28 +00:00
Chris Bieneman 10dcd3bd3b [yaml2macho] Removing asserts in favor of explicit yaml parse error
32-bit Mach headers don't have reserved fields. When generating the
mapping for 32-bit headers leaving off the reserved field will result in
parse errors if the field is present in the yaml.

Added a CHECK-NOT line to ensure that mach_header.yaml isn't adding a
reserved field, and a test to ensure that the parser error gets hit with
32-bit headers.

llvm-svn: 273623
2016-06-23 22:36:31 +00:00
Richard Smith 2ad6d48b0c Search for llvm-symbolizer binary in the same directory as argv[0], before
looking for it along $PATH. This allows installs of LLVM tools outside of
$PATH to find the symbolizer and produce pretty backtraces if they crash.

llvm-svn: 272232
2016-06-09 00:53:21 +00:00
Chris Bieneman 468208a1de [yaml2obj] Get rid of MachO header union
This is based on post-commit feedback from Sean Silva.

llvm-svn: 271942
2016-06-06 21:18:43 +00:00
Chris Bieneman 4c423773d8 [yaml2obj] Sort MachO LinkEdit write operations based on offset
This re-applies r271611, and hopefully the bots won't break this time.

Although ld64 always outputs linkedit data in the same order, it isn't actually required to. This change makes yaml2obj resilient if the offsets are in arbitrary order.

llvm-svn: 271687
2016-06-03 16:58:05 +00:00