Test harness for the LLVM disassembler. When invoked
with -disassemble, llvm-mc now accepts lines of the
form
0x00 0x00
and passes the resulting bytes to the disassembler for
the chosen (or default)

Test harness for the LLVM disassembler. When invoked
with -disassemble, llvm-mc now accepts lines of the
form
0x00 0x00
and passes the resulting bytes to the disassembler for
the chosen (or default) target, printing the result.

llvm-svn: 91579

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Line this up as well.

llvm-svn: 85748

Fix whitespace.

llvm-svn: 85747

Add an intel syntax MCInstPrinter implementation. You can now
transcode from AT&T to intel syntax with "llvm-mc foo.s -output-asm-variant=1"

llvm-svn: 82385

Change MCAsmStreamer to take an MCInstPrinter instead of a
full AsmPrinter, and change TargetRegistry to keep track
of registered MCInstPrinters.

llvm-mc is still linking in the entire
target foo t

Change MCAsmStreamer to take an MCInstPrinter instead of a
full AsmPrinter, and change TargetRegistry to keep track
of registered MCInstPrinters.

llvm-mc is still linking in the entire
target foo to get the code emitter stuff, but this is an
important step in the right direction.

llvm-svn: 81754

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Added the ParseInstruction() hook for target specific assembler directives so
that things like .word can be parsed as target specific. Moved parsing .word
out of AsmParser.cpp into X86AsmParser.cpp

Added the ParseInstruction() hook for target specific assembler directives so
that things like .word can be parsed as target specific. Moved parsing .word
out of AsmParser.cpp into X86AsmParser.cpp as it is 2 bytes on X86 and 4 bytes
for other targets that support the .word directive.

llvm-svn: 81461

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Added the AsmToken::Hash enum constant to MCAsmLexer.h in preparation of
supporting other targets. Changed the code to pass MCAsmInfo to the parser
and the lexer. Then changed the lexer to use Comm

Added the AsmToken::Hash enum constant to MCAsmLexer.h in preparation of
supporting other targets. Changed the code to pass MCAsmInfo to the parser
and the lexer. Then changed the lexer to use CommentString from MCAsmInfo
instead of a literal '#' character.

llvm-svn: 81046

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Removed the non-target independent AsmToken::Register enum constant
from MCAsmLexer.h in preparation of supporting other targets. Changed the
X86AsmParser code to reflect this by removing AsmLexer::

Removed the non-target independent AsmToken::Register enum constant
from MCAsmLexer.h in preparation of supporting other targets. Changed the
X86AsmParser code to reflect this by removing AsmLexer::LexPercent and looking
for AsmToken::Percent when parsing in places that used AsmToken::Register.
Then changed X86ATTAsmParser::ParseRegister to parse out registers as an
AsmToken::Percent followed by an AsmToken::Identifier.

llvm-svn: 80929

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TAI -> MAI

llvm-svn: 80899

llvm-mc/Mach-O: Add MCCodeEmitter support, for encoding instructions.
- No relocations yet, of course.

llvm-svn: 80235

llvm-mc: Only show instruction encodings with --show-encoding.

llvm-svn: 80230

llvm-mc: Tweak MCCodeEmitter skeleton.

llvm-svn: 80193

Sketch TargetRegistry support for MCCodeEmitter abstract interface.
- Of course, nothing actually can provide this interface yet.

llvm-svn: 80188

llvm-mc/Mach-O: Unique sections properly, so we don't get duplicate text
sections, etc.
- The quick and dirty way, just clone the TargetLoweringObjectFile
code. Eventually this should be shared..

llvm-mc/Mach-O: Unique sections properly, so we don't get duplicate text
sections, etc.
- The quick and dirty way, just clone the TargetLoweringObjectFile
code. Eventually this should be shared... somehow.

llvm-svn: 80168

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Make LLVM command-line tools overwrite their output files without -f.
This is conventional command-line tool behavior. -f now just means
"enable binary output on terminals".

Add a -f option to llvm-

Make LLVM command-line tools overwrite their output files without -f.
This is conventional command-line tool behavior. -f now just means
"enable binary output on terminals".

Add a -f option to llvm-extract and llvm-link, for consistency.

Remove F_Force from raw_fd_ostream and enable overwriting and
truncating by default. Introduce an F_Excl flag to permit users to
enable a failure when the file already exists. This flag is
currently unused.

Update Makefiles and documentation accordingly.

llvm-svn: 79990

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Change raw_fd_ostream to take flags as an optional bitmask
instead of as two bools. Use this to add a F_Append flag
which has the obvious behavior.

Other unrelated changes conflated into this patc

Change raw_fd_ostream to take flags as an optional bitmask
instead of as two bools. Use this to add a F_Append flag
which has the obvious behavior.

Other unrelated changes conflated into this patch:

1. REmove EH stuff from llvm-dis and llvm-as, the try blocks
are dead.
2. Simplify the filename inference code in llvm-as/llvm-dis,
because raw_fd_ostream does the right thing with '-'.
3. Switch machine verifier to use raw_ostream instead of ostream
(Which is the thing that needed append in the first place).

llvm-svn: 79807

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Rename TargetAsmInfo (and its subclasses) to MCAsmInfo.

llvm-svn: 79763

llvm-mc: Start MCAssembler and MCMachOStreamer.

- Together these form the (Mach-O) back end of the assembler.

- MCAssembler is the actual assembler backend, which is designed to have a
reasona

llvm-mc: Start MCAssembler and MCMachOStreamer.

- Together these form the (Mach-O) back end of the assembler.

- MCAssembler is the actual assembler backend, which is designed to have a
reasonable API. This will eventually grow to support multiple object file
implementations, but for now its Mach-O/i386 only.

- MCMachOStreamer adapts the MCStreamer "actions" API to the MCAssembler API,
e.g. converting the various directives into fragments, managing state like
the current section, and so on.

- llvm-mc will use the new backend via '-filetype=obj', which may eventually
be, but is not yet, since I hear that people like assemblers which actually
assemble.

- The only thing that works at the moment is changing sections. For the time
being I have a Python Mach-O dumping tool in test/scripts so this stuff can
be easily tested, eventually I expect to replace this with a real LLVM tool.

- More doxyments to come.

I assume that since this stuff doesn't touch any of the things which are part of
2.6 that it is ok to put this in not so long before the freeze, but if someone
objects let me know, I can pull it.

llvm-svn: 79612

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Fix a commento.

llvm-svn: 79427

give MCAsmStreamer a TargetAsmInfo.

llvm-svn: 79222

Update llvm-mc / MCAsmStreamer to print the instruction using the actual target
specific printer (this only works on x86, for now).
- This makes it possible to do some correctness checking of the pa

Update llvm-mc / MCAsmStreamer to print the instruction using the actual target
specific printer (this only works on x86, for now).
- This makes it possible to do some correctness checking of the parsing and
matching, since we can compare the results of 'as' on the original input, to
those of 'as' on the output from llvm-mc.

- In theory, we could now have an easy ATT -> Intel syntax converter. :)

llvm-svn: 78986

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llvm-mc: Honor -o option (and add -f).

llvm-svn: 78640

split MachO section handling stuff out to its out .h/.cpp file.

llvm-svn: 78576

Make the big switch: Change MCSectionMachO to represent a section *semantically*
instead of syntactically as a string. This means that it keeps track of the
segment, section, flags, etc directly an

Make the big switch: Change MCSectionMachO to represent a section *semantically*
instead of syntactically as a string. This means that it keeps track of the
segment, section, flags, etc directly and asmprints them in the right format.
This also includes parsing and validation support for llvm-mc and
"attribute(section)", so we should now start getting errors about invalid
section attributes from the compiler instead of the assembler on darwin.

Still todo:
1) Uniquing of darwin mcsections
2) Move all the Darwin stuff out to MCSectionMachO.[cpp|h]
3) there are a few FIXMEs, for example what is the syntax to get the
S_GB_ZEROFILL segment type?

llvm-svn: 78547

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sink the 'name' and 'isdirective' state out of MCSection into its derived classes.
This totally optimizes PIC16 sections by not having an 'isdirective' bit anymore!! ;-)

llvm-svn: 78517