Patch extracted from a larger one by the PaX team. I added the testcases
and tightened error handling a bit.

llvm-svn: 158523

for nesting.

llvm-svn: 156714

Based on a patch by Team PaX.

llvm-svn: 156709

llvm-svn: 156707

Based on a patch from PaX Team.

llvm-svn: 156706

Based on a patch from PaX Team.

llvm-svn: 156705

Previously, an unsupported/unknown assembler directive issued a warning.
That's generally unsafe, and inconsistent with the behaviour of pretty
much every system assembler. Now that the MC assemblers are mature
enough to be the default on multiple targets, it's reasonable to
issue errors for these.

For target or platform directives that need to stay warnings, we
should add explicit handlers for them in, e.g., ELFAsmParser.cpp,
DarwinAsmParser.cpp, et. al., and issue the warning there.

rdar://9246275

llvm-svn: 155926

A trailing comma means no argument at all (i.e., as if the comma were not
present), not an empty argument to the invokee.

rdar://11252521

llvm-svn: 154863

* Removed test/lib/llvm.exp - it is no longer needed 
* Deleted the dg.exp reading code from test/lit.cfg. There are no dg.exp files
  left in the test suite so this code is no longer required. test/lit.cfg is
  now much shorter and clearer 
* Removed a lot of duplicate code in lit.local.cfg files that need access to
  the root configuration, by adding a "root" attribute to the TestingConfig
  object. This attribute is dynamically computed to provide the same
  information as was previously provided by the custom getRoot functions. 
* Documented the config.root attribute in docs/CommandGuide/lit.pod

llvm-svn: 153408

rdar://11027851

llvm-svn: 153137

 evaluated to '1' when the argument list was empty (should be '0').

rdar://11057257

llvm-svn: 152967

Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.

Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.

llvm-svn: 150664

llvm-svn: 149175

messages and allows us to fix PR11865.

llvm-svn: 149174

directives was in the wrong place and getting triggered incorectly with a
cpp .file directive.  This change fixes that and adds a test case.

llvm-svn: 147951

file error checking. Use that to error on an unfinished cfi_startproc.

The error is not nice, but is already better than a segmentation fault.

llvm-svn: 147717

getStreamer().EmitBytes.  Suggestion by Benjamin Kramer!

llvm-svn: 146599

it to the streamer.  rdar://10383898

llvm-svn: 146592

llvm-svn: 143352

FIXME: Would it be reproduced without target-specific operands?
FIXME: Why run llvm-mc as the same input by 3 times?
llvm-svn: 143195

llvm-svn: 142537

  .file filenumber "directory" "filename"

This removes one join+split of the directory+filename in MC internals. Because
bitcode files have independent fields for directory and filenames in debug info,
this patch may change the .o files written by existing .bc files.

llvm-svn: 142300

llvm-svn: 140012

rdar://9976729

llvm-svn: 138208

llvm-svn: 138207

The .local, .hidden, .internal, and .protected are not legal for all supported
file formats (in particular, they're invalid for MachO). Move the parsing for
them into the ELF assembly parser since that's the format they're for.
Similarly, .weak is used by COFF and ELF, but not MachO, so move the parsing
to the COFF and ELF asm parsers. Previously, using any of these directives
on Darwin would result in an assertion failure in the parser; now we get
a diagnostic as we should.

rdar://9827089

llvm-svn: 135921

For example, ".byte 256" would previously assert() when emitting an object
file. Now it generates a diagnostic that the literal value is out of range.

rdar://9686950

llvm-svn: 134069

llvm-svn: 133349

Requested by nbjoerg!

llvm-svn: 132716

We still don't handle

* default values
* :req
* :vararg
* \()

llvm-svn: 132656

llvm-svn: 132110

Rework how the MCWin64EHUnwindInfo instances are stored. Fix issues with
chained unwind areas exposed by the test that were related to this.

The ChainedParent field had the wrong address, because when the chained unwind
info was added, the addresses shifted around. Now we store the pointers to the
structures, which are now allocated from the MC heap.

llvm-svn: 132106

them.

I had to add a special SwitchSectionNoChange method to MCStreamer just for
.seh_handlerdata. If this isn't OK, please let me know, and I'll find some
other way to fix .seh_handlerdata streaming.

llvm-svn: 132084

buggy methods that parse these directives.

llvm-svn: 132045

one I found by inspection).

llvm-svn: 132037

method exposed by the test. While we're at it, simplify the .seh_proc
parsing method.

llvm-svn: 132028

this test.

llvm-svn: 132004

test for invalid hexadecimals.

llvm-svn: 129326

llvm-svn: 129323

And don't append the name over and over again in the loop.

llvm-svn: 129210