This is the first step towards DLL creation support. Resource-only DLLs
don't have entry point address.

llvm-svn: 195510

llvm-svn: 195388

It's allowed to specify library files *before* object files in the command
line. Object files seems to be processed first, and then their undefined
symbols are resolved from the libraries. This patch implements the compatible
behavior.

llvm-svn: 195295

llvm-svn: 195289

So that the LLD won't print error message saying that it couldn't find
/implib or /safeseh files.

llvm-svn: 195276

llvm-svn: 195105

llvm-svn: 194292

llvm-svn: 194187

llvm-svn: 194186

llvm-svn: 194173

This patch adds support for converting normalized mach-o to and from binary
mach-o. It also changes WriterMachO (which previously directly wrote a 
mach-o binary given a set of Atoms) to instead do it in two steps. The first 
step uses normalizedFromAtoms() to convert Atoms to normalized mach-o, and the
second step uses writeBinary() which to generate the mach-o binary file.  

llvm-svn: 194167

These fields are for /align option. Section alignment can be set per-section
basis with /section option too. In order to avoid name conflicts, rename the
existing identifiers to become more specific. No functionality change.

llvm-svn: 194160

/section command line option is to set/reset attributes of the Characteristics
field in the section header. You can set non-default values with this option.
You can make .data section executable with this, for example.

This patch implements the parser of the command line option. The code to use
the parsed values will be committed in a separate patch.

llvm-svn: 194133

I'm not sure if it is really an alias for /nodefaultlib, but I can say that
they are at least similar. Making it an alias would be better than ignoring it.

llvm-svn: 194131

/defaultlib options can be specified implicitly via the .drectve section, and
it's pretty common that multiple object files add the same library, such as
user32.lib, to the input. We shouldn't add the same library multiple times.

llvm-svn: 194129

msvcrt.lib contains "/disallowlib" command line option in its .drectve section.
I couldn't spot any documentation for the option. Ignore it for now so that we
can link the library without error.

llvm-svn: 194114

/merge:<from>=<to> option makes the linker to combine "from" section to "to"
section. This patch is to parse the option. The actual feature will be
implemented in a subsequent patch.

llvm-svn: 193454

llvm-svn: 193201

/manifestfile:<path> specifies an alternative manifest file output path.
Default is "<output-path>.manifest" where <output-path> is the executable's
path.

llvm-svn: 193195

uiAccess argument's type is not really boolean. It's string.

llvm-svn: 193171

This option is used for the manifest file too.

llvm-svn: 193145

The manifest file is an XML file that conveys some information to the loader,
such as whether the executable needs to run as Administrator or not. This patch
is to parse command line option for manifest file.

Actual XML file generation will be done in a separate patch.

llvm-svn: 193141

Dead-strip root symbols can be undefined atoms, but should not really be
nonexistent, because dead-strip root symbols should be added to initial
undefined atoms at startup. Whenever you look up its name in the symbol
table, some type of atom will always exist.

llvm-svn: 192831

Differential Revision: http://llvm-reviews.chandlerc.com/D1853

llvm-svn: 192167

llvm-svn: 192153

llvm-svn: 192152

This is the first step in how I plan to get mach-o object files support into 
lld. We need to be able to test the mach-o Reader and Write on systems without 
a mach-o tools. Therefore, we want to support a textual way (YAML) to represent 
mach-o files.

MachONormalizedFile.h defines an in-memory abstraction of the content of mach-o  
files. The in-memory data structures are always native endianess and always
use 64-bit sizes. That internal data structure can then be converted to or
from three different formats: 1) yaml (text) encoded mach-o, 2) binary mach-o
files, 3) lld Atoms.

This patch defines the internal model and uses YAML I/O to implement the 
conversion to and from the model to yaml. The next patch will implement
the conversion from normalized to binary mach-o.

This patch includes unit tests to validate the yaml conversion APIs.

llvm-svn: 192147

Changes :-

a) Functionality in InputGraph to insert Input elements at any position
b) Functionality in the Resolver to use nextFile
c) Move the functionality of assigning file ordinals to InputGraph
d) Changes all inputs to MemoryBuffers
e) Remove LinkerInput, InputFiles, ReaderArchive

llvm-svn: 192081

llvm-svn: 191594

Stop using some locally defined mach-o constants.

llvm-svn: 191581

llvm-svn: 191469

This patch inverts the return value of these functions, so that they return
"true" on success and "false" on failure. The meaning of boolean return value
was mixed in LLD; for example, InputGraph::validate() returns true on success.
With this patch they'll become consistent.

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1748

llvm-svn: 191341

llvm-svn: 191317

llvm-svn: 191276

/PDBALTPATH:<path> is an option to embed a different path for the PDB file to
the binary than the actual PDB file location. Because we don't support PDB
file, we'll just ignore the option for now.

llvm-svn: 191273

llvm-svn: 191269

llvm-svn: 191268

llvm-svn: 191259

llvm-svn: 191254

We used to support both Windows and Unix style command line options. In Windows
style, an option and its value are separated by ":" (colon). In Unix, separator
is a space. Accepting both styles were convenient, but we can no longer allow
Unix style because I found that can be ambiguous.

For example, /nodefaultlib option takes an optional argument. In Windows style
it's going to be something like "/nodefaultlib:foo". There's no ambiguity what
"foo" means. However, if the option is "/nodefaultlib foo", "foo" can be
interpreted either an optional argument for "/nodefaultlib" or an input file
"foo.obj". We should just stop accepting the non-standard command line style.

llvm-svn: 191247