Commit Graph

156 Commits

Author SHA1 Message Date
Eric Beckmann 36793a0ecf Revert "Switch external cvtres.exe for llvm's own resource library."
This reverts commit 600d52c278e123dd08bee24c1f00932b55add8de.

This patch still seems to break CrWinClangLLD, reverting until I can
find root problem.

llvm-svn: 307189
2017-07-05 18:59:16 +00:00
Eric Beckmann 8cc9fd31e6 Revert "Replace trivial use of external rc.exe by writing our own .res file."
This patch still seems to break CrWinClangLLD, reverting this once more
until I can discover root problem.

This reverts commit 3dbbc8ce43be50ffde2b1c655c6d3a25796fe78b.

llvm-svn: 307188
2017-07-05 18:59:01 +00:00
Martin Storsjo 94fce50950 [COFF] Add initial support for linking ARM64 binaries
A plain empty entry point function that returns 0 seems to produce
a binary that loads and runs fine in wine.

Differential Revision: https://reviews.llvm.org/D34833

llvm-svn: 306963
2017-07-01 20:29:27 +00:00
Eric Beckmann 602afcf7e9 Revert "Revert "Replace trivial use of external rc.exe by writing our own .res file.""
Summary:
This reverts commit 51931072a7c9a52540baf76fc30ef391d2529a2f.

This revert was originally done because the integrations of the new
WindowsResource library into LLD was causing error in chromium, due to
bugs in how resource sections were handled.  These bugs were fixed,
meaning that the features may be reintegrated.

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D34922

llvm-svn: 306941
2017-07-01 03:59:54 +00:00
Eric Beckmann d40dd64ff0 Revert "Replace trivial use of external rc.exe by writing our own .res file."
This reverts commit d4c7e9fc63c10dbab0c30186ef8575474a704496.

This is done in order to address the failure of CrWinClangLLD etc. bots.
These throw an error of "side-by-side configuration is incorrect" during
compilation, which sounds suspiciously related to these manifest
changes.

Revert "Switch external cvtres.exe for llvm's own resource library."

This reverts commit 71fe8ef283a9dab9a3f21432c98466cbc23990d1.

llvm-svn: 306618
2017-06-29 00:17:26 +00:00
Rui Ueyama e8a3be4693 Fix -Wpessimizing-move.
llvm-svn: 306323
2017-06-26 19:52:01 +00:00
Eric Beckmann 2a81089116 Replace trivial use of external rc.exe by writing our own .res file.
This patch removes the dependency on the external rc.exe tool by writing
a simple .res file using our own library. In this patch I also added an
explicit definition for the .res file magic.  Furthermore, I added a
unittest for embeded manifests and fixed a bug exposed by the test.

llvm-svn: 306311
2017-06-26 17:43:30 +00:00
Sam Clegg 7859216b28 Fix argument numbersing in OPTION macro
The option numbers in the macro were off by one which
leads to some confusion.  There are actually 12 arguments
to this macro.

Differential Revision: https://reviews.llvm.org/D34413

llvm-svn: 305823
2017-06-20 19:17:58 +00:00
Yuka Takahashi ba5d4af490 [GSoC] Flag value completion for clang
This is patch for GSoC project, bash-completion for clang.

To use this on bash, please run `source clang/utils/bash-autocomplete.sh`.
bash-autocomplete.sh is code for bash-completion.

In this patch, Options.td was mainly changed in order to add value class
in Options.inc.

llvm-svn: 305805
2017-06-20 16:31:31 +00:00
Eric Beckmann ddcfbf7d0a Have writeCOFFWriter return Expected<unique_ptr>.
Summary: Have writeCOFFWriter return Expected<unique_ptr> instead of requiring being passed an uninitialized unique_ptr.

Reviewers: zturner, ruiu

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D34307

llvm-svn: 305730
2017-06-19 18:49:05 +00:00
Eric Beckmann d135e8c039 Switch external cvtres.exe for llvm's own resource library.
In this patch, I flip the switch in DriverUtils from using the external
cvtres.exe tool to using the Windows Resource library in llvm.

I also fixed a bug where .rsrc sections were marked as discardable
memory and therefore were placed in the wrong order in the final PE.

Furthermore, I modified WindowsResource to write the coff directly to a
memory buffer instead of to file, also had it use the machine types
already declared in COFF.h instead creating my own enum.

Finally, I flipped the switch to allow all unit tests that had
previously run only on windows due to a winres dependency to run
cross-platform.

Reviewers: zturner, ruiu

Subscribers: llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D34265

llvm-svn: 305592
2017-06-16 21:13:24 +00:00
Saleem Abdulrasool bc7ff7027e COFF: add support for lib mode usage
When link is invoked with `/def:` and no input files, it behaves as if
`lib.exe` was invoked.  Emulate this behaviour, generating the import
library from the def file that was passed.  Because there is no input to
actually generate the dll, we simply process the def file early and exit
once we have created the import library.

llvm-svn: 305502
2017-06-15 20:39:58 +00:00
Rui Ueyama 01f93335a0 Use make<> everywhere in COFF to make it consistent with ELF.
We've been using make<> to allocate new objects in ELF. We have
the same function in COFF, but we didn't use it widely due to
negligence. This patch uses the function in COFF to close the gap
between ELF and COFF.

llvm-svn: 303357
2017-05-18 17:03:49 +00:00
Rui Ueyama 95fe854332 Handle _LINK_ env string as command line parameters.
"_LINK_" environment varaible should be appended to the command line.
https://msdn.microsoft.com/en-us/library/6y6t9esh.aspx

Fixes https://bugs.llvm.org/show_bug.cgi?id=32756

llvm-svn: 301264
2017-04-24 22:20:03 +00:00
Saleem Abdulrasool 72fbd346c6 COFF: add support for CONSTANT exports
The CONSTANT export type is marked as obsolete, but link still supports
this.  Furthermore, WinObjC uses this for certain exports.  Add support
for this export type.

llvm-svn: 301013
2017-04-21 18:05:46 +00:00
Bob Haarman 630d0c0f44 [coff] use newlines instead of spaces as separators in msvclto response file
Summary:
Fixes PR32689: /msvclto creates response files with lines
that are too long for msvc's linker (LNK1170).

Reviewers: hans, rnk, ruiu

Subscribers: llvm-commits, mehdi_amini

Differential Revision: https://reviews.llvm.org/D32185

llvm-svn: 300612
2017-04-18 22:00:29 +00:00
Rui Ueyama 85d54b050e Fix /msvclto.
Previously, bitcode files in library paths were passed to the MSVC linker.
This patch strips them.

llvm-svn: 295913
2017-02-23 00:26:42 +00:00
Rui Ueyama 98eafd67d5 Attempt to fix buildbot.
I added this log message to test the /msvclto option, but
this output might confuse FileCheck. This patch attempts to fix
it by removing it.

llvm-svn: 295793
2017-02-22 00:06:18 +00:00
Rui Ueyama e6e206d4b4 Do not use errs() or outs() directly. Instead use message(), log() or error()
LLD is a multi-threaded program. errs() or outs() are not guaranteed
to be thread-safe (they are actually not).

LLD's message(), log() or error() are thread-safe. We should use them.

llvm-svn: 295787
2017-02-21 23:22:56 +00:00
Rui Ueyama 1e0b158dbd Add an option to use the MSVC linker to link LTO-generated object files.
This patch defines a new command line option, /MSVCLTO, to LLD.
If that option is given, LLD invokes link.exe to link LTO-generated
object files. This is hacky but useful because link.exe can create
PDB files.

Differential Revision: https://reviews.llvm.org/D29526

llvm-svn: 294234
2017-02-06 20:47:55 +00:00
Rui Ueyama 9381eb1045 Remove lld/Support/Memory.h.
I thought for a while about how to remove it, but it looks like we
can just copy the file for now. Of course I'm not happy about that,
but it's just less than 50 lines of code, and we already have
duplicate code in Error.h and some other places. I want to solve
them all at once later.

Differential Revision: https://reviews.llvm.org/D27819

llvm-svn: 290062
2016-12-18 14:06:06 +00:00
Peter Collingbourne 6baa5d276d COFF: Fix test failure on Windows.
llvm-svn: 289289
2016-12-09 23:34:49 +00:00
Peter Collingbourne 79a5e6b1b7 COFF: New symbol table design.
This ports the ELF linker's symbol table design, introduced in r268178,
to the COFF linker.

Differential Revision: http://reviews.llvm.org/D21166

llvm-svn: 289280
2016-12-09 21:55:24 +00:00
Rui Ueyama 8d433d71f5 COFF: Use a string saver in Memory.h in Driver.
llvm-svn: 289104
2016-12-08 21:27:09 +00:00
Rui Ueyama 8fe1767cdd Remove unnecessary `llvm::`.
llvm-svn: 289102
2016-12-08 20:50:47 +00:00
Rui Ueyama c910bc7e19 Simplify "missing argument" error message.
llvm-svn: 288112
2016-11-29 04:17:31 +00:00
Rui Ueyama e5e407beb4 Add comments.
llvm-svn: 288111
2016-11-29 04:17:30 +00:00
Rui Ueyama c3dcf99441 [COFF] Fix manifest resource file creation on Windows.
createManifestRes was generating a MemoryBuffer from a TemporaryFile,
keeping the data but removing the file, before passing the file path
to CVTRES.exe, leading to the following error:

  CVTRES : fatal error CVT1101: cannot open 'C:\Users\user\AppData\
  Local\Temp\lld-output-resource-bfee19.res' for reading

With this, we instead create a new TemporaryFile before passing it to cvtres.

Patch from Rudy Pons!

llvm-svn: 287034
2016-11-15 21:25:20 +00:00
Mehdi Amini ec4fb5ba97 Use StringRef in StringSaver API (NFC)
llvm-svn: 283290
2016-10-05 01:32:41 +00:00
Rui Ueyama c79ecdd876 Use StringSwtich::Cases for multiple choices.
llvm-svn: 282964
2016-09-30 22:01:25 +00:00
Rui Ueyama fa12b8bd1a Remove temoprary files.
Previously, we created temporary files using llvm::sys::fs::createTemporaryFile
and removed them using llvm::FileRemover. This is error-prone as it is easy to
forget creating FileRemover instances after creating temporary files.
There is actually a temporary file leak bug.

This patch introduces a new class, TemporaryFile, to manage temporary files
in the RAII style.

Differential Revision: https://reviews.llvm.org/D24176

llvm-svn: 280510
2016-09-02 17:34:17 +00:00
Rui Ueyama bb57954241 COFF: Update error messages so that they start with lowercase letters.
llvm-svn: 275513
2016-07-15 01:12:24 +00:00
Rui Ueyama 659a4f2f38 Make check() always return a value.
Previously, one of two check functions didn't return a value.
It was confusing. This patch makes both functions return values.

llvm-svn: 275511
2016-07-15 01:06:38 +00:00
Rui Ueyama 0d09a865c6 COFF: Remove `void error()` functions and use fatal instead.
This change makes the control flow more explicit.

llvm-svn: 275504
2016-07-15 00:40:46 +00:00
Rui Ueyama 1a3fd13776 COFF: Remove unnecessary explicit calls of Twine ctor.
llvm-svn: 275501
2016-07-14 23:43:36 +00:00
Rui Ueyama 606047939c COFF: Rename noreturn error -> fatal.
This new name is also consistent with ELF.

llvm-svn: 275500
2016-07-14 23:37:14 +00:00
Rui Ueyama 7e75866c51 COFF: Rename non-noreturn error -> check.
The new name is consistent with ELF.

llvm-svn: 275499
2016-07-14 23:37:10 +00:00
Saleem Abdulrasool f27d4068a5 COFF: drop the dependency on LIB.EXE for implibs
lld currently relies on lib.exe in order to generate an empty import library.
The "empty" import library consists of 5 members:
  - first linker member
  - second linker member
  - Import Descriptor
  - NULL Import Descriptor
  - NULl Thunk

The first two entries (first and second linker members) are string tables which
are never updated.  Therefore, they may as well as not be present.  A subsequent
change to add that is probably warranted.  However, this does not prevent the
use of the linker.

The Import Descriptor is the content which is most important.  It provides an
Import Name Table entry for the library (as specified by the LIBRARY directive
in the DEF file).  Additionally, it contains undefined references to the NULL
Import Descriptor and the library NULL Thunk Data.  This ensures that the linker
will pull in the subsequent objects from the import library for the link.  The
Import Descriptor has a single symbol (__IMPORT_DESCRIPTOR_<Library>) which
contains 3 relocations, one to the INT (Import Name Table) entry, one to the ILT
(Import Lookup Table) entry, and one to the IAT (Import Address Table) entry.

The NULL Import Descriptor is the last import descriptor and terminates the
import descriptor array.  It contains a single symbol
(__NULL_IMPORT_DESCRIPTOR).

The NULL Thunk contains a single symbol (\x7f<Library>_NULL_THUNK_DATA) and
provides the terminator for the ILT and IAT.

These files are currently constructed manually following the example of the
Short Import Library format.  This is arguably less than ideal, and it may be
possible to use MCAssembler and feed it the fragments to construct the object.

The major difference between the LIB (LINK) generated objects and the ones
generated here is that they are all one section shorter (.debug$S) as they do
not contain the debug information and one symbol shorter (@comp.id) as they do
not contain the RICH signature.

Move the logic related to the librarian into a new source file (Librarian.cpp).

llvm-svn: 275242
2016-07-13 03:19:27 +00:00
Saleem Abdulrasool 0561bd5b47 COFF: remove unused function (touchFile)
Remove some dead code.  NFC.

llvm-svn: 274900
2016-07-08 18:36:56 +00:00
Peter Collingbourne eadba86c3e COFF: Switch to new archive writer interface (D21721).
Differential Revision: http://reviews.llvm.org/D21722

llvm-svn: 274184
2016-06-29 22:27:45 +00:00
Kevin Enderby b9e053cfd7 Matching change for lld for the llvm change of Archive::create() from ErrorOr<...> to Expected<...> in r274160.
llvm-svn: 274161
2016-06-29 20:36:11 +00:00
Rui Ueyama 440138c4c8 [COFF] Add /section command line flag.
llvm-svn: 273134
2016-06-20 03:39:39 +00:00
Nico Weber a7a848f10d Revert unintentionally commited bits in r266935.
llvm-svn: 266942
2016-04-21 01:31:37 +00:00
Nico Weber 848334704d unbreak COFF/out.test after r266929
llvm-svn: 266935
2016-04-20 23:30:14 +00:00
Rui Ueyama afb1901e42 COFF: Support /manifestinput command line option.
Manifest file is a separate or embedded XML file having metadata
of an executable. As it is XML, it can contain various types of
information. Probably the most popular one is to request escalated
priviledges.

Usually the linker creates an XML file and embed that file into
an executable. However, there's a way to supply an XML file from
command line. /manifestniput is it.

Apparently it is over-designed here, but if you supply two or more
manifest files, then the linker needs to merge the files into a
single XML file. A good news is that we don't need to do that ourselves.
MT.exe command can do that, so we call the command from the linker
in this patch.

llvm-svn: 266704
2016-04-19 01:21:58 +00:00
Rui Ueyama 84425d7289 COFF: Implement DLL symbol forwarding.
DLL export tables usually contain dllexport'ed symbol RVAs so that
applications which use the DLLs can find symbols from the DLLs.
However, there's a minor feature to "forward" DLL symbols to other
DLLs.

If you set an RVA to a string whose form is "<dllname>.<symbolname>"
(e.g. "KERNEL32.ExitProcess") instead of symbol RVA to the export
table, the loader interprets that as a forwarder symbol, and resolve
that symbol from the specified DLL.

This patch implements that feature.

llvm-svn: 257243
2016-01-09 01:22:00 +00:00
Rafael Espindola 7bcaec83be Fix a few windows only tests.
This argument must be non-null.

llvm-svn: 252336
2015-11-06 19:57:37 +00:00
Kevin Enderby 35dfc95efe These are the matching changes needed to the lld project for the changes to llvm
in r252192 that changed the Archive and Child interfaces in libObject. These include
Rafael Espindola’s many suggested updates.

llvm-svn: 252193
2015-11-05 19:25:47 +00:00
Craig Topper f88d22970d Update lld to match llvm r250901. OptTable constructor now takes an ArrayRef. NFC
llvm-svn: 250904
2015-10-21 16:31:56 +00:00
Rui Ueyama 27e9e6540c Remove unused #includes.
llvm-svn: 248081
2015-09-19 02:28:32 +00:00
Davide Italiano 491d3bfd43 [COFF] Remove dead private field. Also fixes build with -Werror.
llvm-svn: 246553
2015-09-01 16:05:53 +00:00
Rui Ueyama dfff2542b8 COFF: Make import libraries compatible with MSVC link.
I have totally no idea why, but MSVC linker is sensitive about
file names of archive members. If we do not make import library
file names to the same as the DLL name, MSVC link *crashes*
when it is processing the library file. This patch is to set
the same name.

llvm-svn: 246535
2015-09-01 08:08:57 +00:00
Rui Ueyama 84f9218417 COFF: Set "Data" bit for data symbols in the import descriptor.
llvm-svn: 246533
2015-09-01 06:46:10 +00:00
Rui Ueyama f10a32014d COFF: Improve dllexported name mangling compatibility.
The rules for dllexported symbols are overly complicated due to
x86 name decoration, fuzzy symbol resolution, and the fact that
one symbol can be resolved by so many different names. The rules
are probably intended to be "intuitive", so that users don't have
to understand the name mangling schemes, but it seems that it can
lead to unintended symbol exports.

To make it clear what I'm trying to do with this patch, let me
write how the export rules are subtle and complicated.

 - x86 name decoration: If machine type is i386 and export name
   is given by a command line option, like /export:foo, the
   real symbol name the linker has to search for is _foo because
   all symbols are decorated with "_" prefixes. This doesn't happen
   on non-x86 machines. This automatic name decoration happens only
   when the name is not C++ mangled.

   However, the symbol name exported from DLLs are ones without "_"
   on all platforms.

   Moreover, if the option is given via .drectve section, no
   symbol decoration is done (the reason being that the .drectve
   section is created by a compiler and the compiler should always
   know the exact name of the symbol, I guess).

 - Fuzzy symbol resolution: In addition to x86 name decoration,
   the linker has to look for cdecl or C++ mangled symbols
   for a given /export. For example, it searches for not only
   _foo but also _foo@<number> or ??foo@... for /export:foo.

Previous implementation didn't get it right. I'm trying to make
it as compatible with MSVC linker as possible with this patch
however the rules are. The new code looks a bit messy to me, but
I don't think it can be simpler due to the ad-hoc-ness of the rules.

llvm-svn: 246424
2015-08-31 08:43:21 +00:00
Rui Ueyama 40f4d86f5f COFF: Create short import files instead of using lib.exe.
lib.exe has a feature to create import library files (which contain
short import files) from module-definition files. Previously, we were
using that feature, but it turned out that the feature is not complete
for us.

There seems no way to specify "Import Types" in module-definition file.
lib.exe always adds "_" to given symbols and specify IMPORT_NAME_UNDECORATE.
We need more fine-grainded control on that value.

This patch teaches LLD to create short import files itself.
We are still using lib.exe, but the use of the tool is limited to create
empty import library files. We then create short import files and add them
to the empty files as new members.

This patch does not intend to change the functionality. LLD produces
the same import libraries as before. I'll make another change to create
different import libraries in a follow-up patch.

llvm-svn: 246292
2015-08-28 10:52:05 +00:00
Rui Ueyama c0c74e1b8a COFF: Print out module-definition files if /verbose is given.
This is useful for testing.

llvm-svn: 246032
2015-08-26 12:37:54 +00:00
Rui Ueyama 2caf407107 COFF: Show real command line options if /verbose is given.
llvm-svn: 246023
2015-08-26 07:12:08 +00:00
Rui Ueyama 04ec69aa9e COFF: Use ErrorOr::operator* instead of ErrorOr::get.
This patch is to make COFF coding style consistent with ELF. NFC.

llvm-svn: 245282
2015-08-18 09:18:15 +00:00
Rafael Espindola f0461ba985 Update for llvm api change.
llvm-svn: 244856
2015-08-13 01:07:08 +00:00
Rafael Espindola b835ae8e4a Port the error functions from ELF to COFF.
This has a few advantages

* Less C++ code (about 300 lines less).
* Less machine code (about 14 KB of text on a linux x86_64 build).
* It is more debugger friendly. Just set a breakpoint on the exit function and
  you get the complete lld stack trace of when the error was found.
* It is a more robust API. The errors are handled early and we don't get a
  std::error_code hot potato being passed around.
* In most cases the error function in a better position to print diagnostics
  (it has more context).

llvm-svn: 244215
2015-08-06 14:58:50 +00:00
Rui Ueyama 18edc83b6c COFF: Fix error message. Space was missing.
llvm-svn: 243794
2015-07-31 21:51:25 +00:00
Rui Ueyama 966acb2e2f COFF: Suppress "Duplicate entry" warning of lib.exe
We create a module-definition file and give that to lib.exe to
create an import library file. A module-definition has to be
syntactically and semantically correct, of course.

There was a case that we created a module-definition file that
lib.exe would complain for duplicate entries. If a user gives
an unmangled and mangled name for the same symbol, we would end
up having two duplicate lines for the mangled name in a module-
definition file.

This patch fixes that issue by uniquefying entries by mangled
symbol name.

llvm-svn: 243587
2015-07-29 22:38:27 +00:00
Rui Ueyama 9420dee328 COFF: Fix export symbol names for x86.
I don't fully understand the rationale behind the name mangling
scheme used for the DLL export table and the import library.
Why only leading "_" is dropped for the import library while
both "_" and "@" are dropped from DLL symbol table? But this seems
to be what MSVC linker does.

llvm-svn: 243490
2015-07-28 22:34:24 +00:00
Rui Ueyama 5e706b3ee3 COFF: Use short identifiers. NFC.
llvm-svn: 243229
2015-07-25 21:54:50 +00:00
Rui Ueyama 35ccb0f7d4 COFF: Don't assume !is64() means i386.
In many places we assumed that is64() means AMD64 and i386 otherwise.
This assumption is not sound because Windows also supports ARM.
The linker doesn't support ARM yet, but this is a first step.

llvm-svn: 243188
2015-07-25 00:20:06 +00:00
Rui Ueyama 8765fbae15 COFF: Fix mangled dllexported names.
If a symbol is exported as /export:foo, and foo is resolved as a
mangled name (_foo@<number> or ?foo@@Y...), that mangled name should
be written to the export table. Previously, we wrote the original
name to the export table.

llvm-svn: 242342
2015-07-15 22:21:08 +00:00
Rui Ueyama 39d9efb772 COFF: Fix command line options for external commands.
llvm-svn: 241853
2015-07-09 20:22:39 +00:00
Rui Ueyama 57aa69ee97 COFF: Make /machine:{i386,amd64} aliases to {x86,x64}.
MSVC linker accepts these aliases.

llvm-svn: 241840
2015-07-09 19:43:49 +00:00
Rui Ueyama e16a75d5a1 COFF: Handle /machine option in a similar manner for other options. NFC.
llvm-svn: 241701
2015-07-08 18:14:51 +00:00
Rui Ueyama 84936e0b43 COFF: Check for incompatible machine types.
llvm-svn: 241647
2015-07-07 23:39:18 +00:00
Rui Ueyama 2b82d5f8ca COFF: Do not warn on identical /merge options.
llvm-svn: 241397
2015-07-04 23:54:52 +00:00
Rui Ueyama 6600eb18cd COFF: Implement /merge option.
/merge:.foo=.bar makes the linker to merge section .foo with section .bar.

llvm-svn: 241396
2015-07-04 23:37:32 +00:00
Rui Ueyama 3126c6c565 Use map::insert instead of checking existence of a key and insert. NFC.
llvm-svn: 241385
2015-07-04 02:00:22 +00:00
Rui Ueyama 4b8cdd20fb COFF: Don't print warning message for identical /export options.
llvm-svn: 241379
2015-07-03 23:23:29 +00:00
Rui Ueyama 0fc26d21bd COFF: Create an empty file for /pdb.
Most build system depends on existence or time stamp of a file.
This patch is to create an empty file for /pdb:<filename> option
just to satisfy some build rules.

llvm-svn: 240948
2015-06-29 14:27:12 +00:00
Rui Ueyama 9d72f09efd COFF: Remove a function that doesn't do much itself. NFC.
llvm-svn: 240901
2015-06-28 03:05:38 +00:00
Rui Ueyama 06cf3df2d5 COFF: Handle LINK environment variable.
If LINK is defined and not empty, it's supposed to contain
command line options.

llvm-svn: 240900
2015-06-28 02:35:31 +00:00
David Blaikie 6521ed964b Update for LLVM API change to return by InputArgList directly (rather than by pointer) from ParseArgs
llvm-svn: 240347
2015-06-22 22:06:52 +00:00
David Blaikie 008181933d Fix missed formatting in prior commit (mostly 80 cols violation and some whitespace around *)
llvm-svn: 240346
2015-06-22 22:06:48 +00:00
David Blaikie b2b1c7c3e1 ArrayRef-ify Driver::parse and related functions.
llvm-svn: 240236
2015-06-21 06:32:10 +00:00
David Blaikie 8da889f1a5 ArrayRef-ify ParseArgs
llvm-svn: 240235
2015-06-21 06:32:04 +00:00
Peter Collingbourne 74ecc89c46 COFF: Take reference to argument vector using std::vector::data() instead of operator[](0).
This avoids undefined behaviour caused by an out-of-range access if the
vector is empty, which can happen if an object file's directive section
contains only whitespace.

llvm-svn: 240183
2015-06-19 22:40:05 +00:00
Rui Ueyama e8d56b5258 COFF: Allow identical alternatename options.
Alternatename option is in the form of /alternatename:<from>=<to>.
It is an error if there are two options having the same <from> but
different <to>. It is *not* an error if both are the same.

llvm-svn: 240075
2015-06-18 23:04:26 +00:00
Rui Ueyama 75b098b29d COFF: Handle /failifmismatch in the same manner as other options.
No functionality change intended.

llvm-svn: 240061
2015-06-18 21:23:34 +00:00
Rui Ueyama b95188cb2c COFF: Add /implib option.
llvm-svn: 240045
2015-06-18 20:27:09 +00:00
Rui Ueyama 2edb35a264 COFF: Handle /alternatename in .drectve section.
llvm-svn: 240037
2015-06-18 19:09:30 +00:00
Rui Ueyama 24c5fd0419 COFF: Support /manifest{,uac,dependency,file} options.
The linker has to create an XML file for each executable.
This patch supports that feature.

You can optionally embed an XML file to an executable as .rsrc
section. If you choose to do that (by passing /manifest:embed
option), the linker has to create a textual resource file
containing an XML file, compile that using rc.exe to a binary
resource file, conver that resource file to a COFF file using
cvtres.exe, and then link that COFF file. This patch implements
that feature too.

llvm-svn: 239978
2015-06-18 00:12:42 +00:00
Rui Ueyama a9c8838f69 COFF: Simplify. NFC.
Executor is a convenience class to run an external command.

llvm-svn: 239945
2015-06-17 21:01:56 +00:00
Rui Ueyama 151d862d97 COFF: Create import library files.
On Windows, we have to create a .lib file for each .dll.
When linking against DLLs, the linker doesn't use the DLL files,
but instead read a list of dllexported symbols from corresponding
lib files.

A library file containing descriptors of a DLL is called an
import library file.

lib.exe has a feature to create an import library file from a
module-definition file. In this patch, we create a module-definition
file and pass that to lib.exe.

We eventually want to create an import library file by ourselves
to eliminate dependency to lib.exe. For now, we just use the MSVC
tool.

llvm-svn: 239937
2015-06-17 20:40:43 +00:00
Rui Ueyama 97dff9ee3a COFF: Support creating DLLs.
DLL files are in the same format as executables but they have export tables.
The format of the export table is described in PE/COFF spec section 5.3.

A new class, EdataContents, takes care of creating chunks for export tables.
What we need to do is to parse command line flags for dllexports, and then
instantiate the class to create chunks. For the writer, export table chunks
are opaque data -- it just add chunks to .edata section.

llvm-svn: 239869
2015-06-17 00:16:33 +00:00
Rui Ueyama 2bf6a12238 COFF: Support Windows resource files.
Resource files are data files containing i18n messages, icon images, etc.
MSVC has a tool to convert a resource file to a regular COFF file so that
you can just link that file to embed resources to an executable.

However, you can directly pass resource files to the linker. If you do that,
the linker invokes the tool automatically. This patch implements that feature.

llvm-svn: 239704
2015-06-14 21:50:50 +00:00
Rafael Espindola 9bd82e9952 Update for llvm api change.
llvm-svn: 239671
2015-06-13 12:50:13 +00:00
Rui Ueyama aace577e3e COFF: Simplify. NFC.
llvm-svn: 239270
2015-06-07 23:02:50 +00:00
Rui Ueyama b51f67a175 COFF: Use llvm:🆑:ExpandReponseFiles.
llvm-svn: 239269
2015-06-07 23:00:29 +00:00
Rui Ueyama 115d7c1036 COFF: Support resonpse files.
llvm-svn: 239242
2015-06-07 02:55:19 +00:00
Rui Ueyama 8854d8a6f1 COFF: Add /failifmismatch option.
llvm-svn: 239073
2015-06-04 19:21:24 +00:00
Rui Ueyama 8fd9fb9857 COFF: Define an error category for the linker.
Instead of returning non-categorized errors, return categorized errors.
All uses of make_dynamic_error_code are removed.

Because we don't have error reporting mechanism, I just chose to print out
error messages to stderr, and then return an error object. Not sure if
that's the right thing to do, but at least it seems practical.

http://reviews.llvm.org/D10129

llvm-svn: 238714
2015-06-01 02:58:15 +00:00
Rui Ueyama 711cd2d7c8 COFF: Detect file type by file magic.
llvm-svn: 238691
2015-05-31 21:17:10 +00:00
Rui Ueyama 54b71daec4 COFF: Refactor functions to find files from search paths.
llvm-svn: 238678
2015-05-31 19:17:12 +00:00
Peter Collingbourne 246ccc5f51 COFF: Move machine type auto-detection to SymbolTable.
The new mechanism is less code, and fixes the case where all inputs
are archives.

Differential Revision: http://reviews.llvm.org/D10136

llvm-svn: 238618
2015-05-29 21:47:36 +00:00