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1625 Commits

Author SHA1 Message Date
Evan Cheng a83b37a9db Move some parts of TargetAsmInfo down to MCAsmInfo. This is not the greatest 
solution but it is a small step towards removing the horror that is
TargetAsmInfo.

llvm-svn: 135237
 2011-07-15 02:09:41 +00:00
Bill Wendling 9b8605f787 Remove setting the bit for personality function. It should be set by the linker. 
llvm-svn: 135236
 2011-07-15 01:42:32 +00:00
Bill Wendling c998f71d14 Encode that we have a personality function. 
llvm-svn: 135227
 2011-07-15 00:07:31 +00:00
Evan Cheng 1705ab00ab Rename createAsmInfo to createMCAsmInfo and move registration code to MCTargetDesc to prepare for next round of changes. 
llvm-svn: 135219
 2011-07-14 23:50:31 +00:00
Bill Wendling dafd598f05 * If we have an LSDA, we need to mark it in the encoding. 
* The personality function should be encoded as an absolute pointer to the function.

llvm-svn: 135215
 2011-07-14 23:34:45 +00:00
Evan Cheng c7ac690ba2 Unfortunately several files in MC are badly violating layering rule by using 
TargetAsmInfo, which in turn pulls in TargetRegisterInfo, etc. :-( There are
other cases of violations, but this is probably the worst.

This patch is but one small step towards fixing this. 500 more steps to go. :-(

llvm-svn: 135131
 2011-07-14 05:43:07 +00:00
Jim Grosbach 602aa90ab8 Update MCParsedAsmOperand debug methods. 
Update the debug output interface for MCParsedAsmOperand to have a print()
method which takes an output stream argument, an << operator which invokes
the print method using the given stream, and a dump() method which prints
the operand to the dbgs() stream. This makes the interface more consistent
with the rest of LLVM, and more convenient to use at the debugger command
line.

llvm-svn: 135043
 2011-07-13 15:34:57 +00:00
Bill Wendling ee6e776be2 Don't emit the FDE end label if the last thing emitted was a compact unwind and 
not the FDE

llvm-svn: 135020
 2011-07-13 00:49:09 +00:00
Shantonu Sen 761feb85e1 Resynchronize EDInfo.h and EDEmitter.cpp. 
The enum names as well as order (i.e. value)
had skewed, which means that consumers of the
tablegen-ed table would see different values than
intended. Make both files have a superset of enums,
and add classification as needed for numMCOperands.

Reviewed by Owen Anderson

llvm-svn: 134905
 2011-07-11 17:57:30 +00:00
Evan Cheng c5e6d2f519 - Eliminate MCCodeEmitter's dependency on TargetMachine. It now uses MCInstrInfo 
and MCSubtargetInfo.
- Added methods to update subtarget features (used when targets automatically
  detect subtarget features or switch modes).
- Teach X86Subtarget to update MCSubtargetInfo features bits since the
  MCSubtargetInfo layer can be shared with other modules.
- These fixes .code 16 / .code 32 support since mode switch is updated in
  MCSubtargetInfo so MC code emitter can do the right thing.

llvm-svn: 134884
 2011-07-11 03:57:24 +00:00
Evan Cheng 91111d2706 Change createAsmParser to take a MCSubtargetInfo instead of triple, 
CPU, and feature string. Parsing some asm directives can change
subtarget state (e.g. .code 16) and it must be reflected in other
modules (e.g. MCCodeEmitter). That is, the MCSubtargetInfo instance
must be shared.

llvm-svn: 134795
 2011-07-09 05:47:46 +00:00
Evan Cheng 15bc70f765 Fix comment. 
llvm-svn: 134763
 2011-07-08 22:49:42 +00:00
Evan Cheng 22e9d8f40e TargetAsmParser doesn't need reference to Target. 
llvm-svn: 134721
 2011-07-08 19:33:14 +00:00
Evan Cheng 4d1ca96bfc Eliminate asm parser's dependency on TargetMachine: 
- Each target asm parser now creates its own MCSubtatgetInfo (if needed).
- Changed AssemblerPredicate to take subtarget features which tablegen uses
  to generate asm matcher subtarget feature queries. e.g.
  "ModeThumb,FeatureThumb2" is translated to
  "(Bits & ModeThumb) != 0 && (Bits & FeatureThumb2) != 0".

llvm-svn: 134678
 2011-07-08 01:53:10 +00:00
Akira Hatanaka 2f2d9cbb22 This patch adds a flag in MCAsmInfo that indicates whether dwarf register 
numbers should be printed instead of symbolic register names in
MCAsmStreamer::EmitRegisterName. This is necessary because some versions of
GNU assembler won't accept code in which symbolic register names are used in
cfi directives. There is no change in behavior unless the flag is explicitly
set to true by a backend.

llvm-svn: 134635
 2011-07-07 20:30:33 +00:00
Evan Cheng 1a72add615 Compute feature bits at time of MCSubtargetInfo initialization. 
llvm-svn: 134606
 2011-07-07 07:07:08 +00:00
Bill Wendling b6adf46f62 Add a target hook to encode the compact unwind information. 
llvm-svn: 134577
 2011-07-07 00:54:13 +00:00
Bill Wendling 7ed5625082 Clean up the #includes. 
llvm-svn: 134557
 2011-07-06 22:52:32 +00:00
Evan Cheng ab37af9af3 createMCInstPrinter doesn't need TargetMachine anymore. 
llvm-svn: 134525
 2011-07-06 19:45:42 +00:00
Evan Cheng fb71f4260a Add getFeatureBits to extract feature bits for a given CPU. 
llvm-svn: 134298
 2011-07-02 00:43:44 +00:00
Evan Cheng 54b68e3432 - Added MCSubtargetInfo to capture subtarget features and scheduling 
itineraries.
- Refactor TargetSubtarget to be based on MCSubtargetInfo.
- Change tablegen generated subtarget info to initialize MCSubtargetInfo
  and hide more details from targets.

llvm-svn: 134257
 2011-07-01 20:45:01 +00:00
Evan Cheng c88d6d402a Eliminate one extra conversion. 
llvm-svn: 134240
 2011-07-01 16:59:30 +00:00
Francois Pichet 92da450ae7 Another misuse of StringRef. MSVC is very sensitive to that kind of error. 
llvm-svn: 134236
 2011-07-01 09:23:41 +00:00
Rafael Espindola 968af4fee2 Fix use after free. 
llvm-svn: 134234
 2011-07-01 04:40:50 +00:00
Evan Cheng d8e27a584e Switch SubtargetFeatures from std::string to StringRef. 
llvm-svn: 134219
 2011-07-01 00:23:10 +00:00
Bill Wendling c737ac1816 Remove tabs. 
llvm-svn: 134212
 2011-06-30 23:59:38 +00:00
Bill Wendling 40cc749788 Improve comment: Show the register the DWARF label is added to. 
llvm-svn: 134209
 2011-06-30 23:47:40 +00:00
Bill Wendling 2fd8d775df Add one more comment to the FDE verbose asm output. 
llvm-svn: 134200
 2011-06-30 22:35:49 +00:00
Bill Wendling f166ab447e Add comments to the FDE. 
llvm-svn: 134196
 2011-06-30 22:02:20 +00:00
Bill Wendling e7fe47e53b Add more comments to the ASM output for the CIE's "moves". 
llvm-svn: 134194
 2011-06-30 21:45:12 +00:00
Bill Wendling 567a1aee85 Add comments to the ASM output to help understand the compact unwind and CIE tables. 
llvm-svn: 134191
 2011-06-30 21:25:51 +00:00
Evan Cheng fe6e405e8c Fix the ridiculous SubtargetFeatures API where it implicitly expects CPU name to 
be the first encoded as the first feature. It then uses the CPU name to look up
features / scheduling itineray even though clients know full well the CPU name
being used to query these properties.

The fix is to just have the clients explictly pass the CPU name!

llvm-svn: 134127
 2011-06-30 01:53:36 +00:00
Bill Wendling 7517466970 * Use the proper size to output the range size. 
* Rough in the compact encoding part.

llvm-svn: 134119
 2011-06-30 00:30:52 +00:00
Bill Wendling 4cdb206e76 Stupid error: If the LSDA and Personality functions aren't there, emit 0 instead 
of the encoding.

llvm-svn: 134117
 2011-06-29 23:53:16 +00:00
Bill Wendling 8fa4ada5cf We don't want to use relocations inside the compact unwind section. Just use the 
symbols instead.

llvm-svn: 134115
 2011-06-29 23:49:12 +00:00
Jim Grosbach 76346c3bf7 Asm parser range checking on .<size> <value> directives. 
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
 2011-06-29 16:05:14 +00:00
NAKAMURA Takumi 7e26682c71 Fix CMake build. 
llvm-svn: 134055
 2011-06-29 03:26:17 +00:00
Evan Cheng 8264e272a9 Sink SubtargetFeature and TargetInstrItineraries (renamed MCInstrItineraries) into MC. 
llvm-svn: 134049
 2011-06-29 01:14:12 +00:00
Jim Grosbach 28fcafb502 Refactor MachO relocation generaration into the Target directories. 
Move the target-specific RecordRelocation logic out of the generic MC
MachObjectWriter and into the target-specific object writers. This allows
nuking quite a bit of target knowledge from the supposedly target-independent
bits in lib/MC.

llvm-svn: 133844
 2011-06-24 23:44:37 +00:00
Jim Grosbach 018970216c tidy up whitespace. 
llvm-svn: 133815
 2011-06-24 19:43:27 +00:00
Jim Grosbach 3c9ede62f6 Fixup info for Thumb2 unconditional branch. 
rdar://9667872

llvm-svn: 133808
 2011-06-24 18:48:32 +00:00
Jim Grosbach 7633256b9d Tidy up. 
llvm-svn: 133770
 2011-06-23 22:29:00 +00:00
Jay Foad 61ea0e4692 Reinstate r133513 (reverted in r133700) with an additional fix for a 
-Wshorten-64-to-32 warning in Instructions.h.

llvm-svn: 133708
 2011-06-23 09:09:15 +00:00
Bill Wendling 25fbb92320 Use a reference. Don't make a useless copy of the vector. 
llvm-svn: 133707
 2011-06-23 07:55:41 +00:00
Bill Wendling a4b9d1f97b Formatting changes. No functionality change. 
llvm-svn: 133706
 2011-06-23 07:44:54 +00:00
Eric Christopher 96513120b7 Revert r133513: 
"Reinstate r133435 and r133449 (reverted in r133499) now that the clang
self-hosted build failure has been fixed (r133512)."

Due to some additional warnings.

llvm-svn: 133700
 2011-06-23 06:24:52 +00:00
Bill Wendling 9af2fa9d1b Use the presence of the __compact_unwind section to indicate that a target 
supports compact unwind info instead of having a separate flag indicating this.

llvm-svn: 133685
 2011-06-23 05:13:28 +00:00
Bill Wendling e8fc92ad46 Some skeleton code to emit the compact unwind. If the information is unable to 
be emitted in a compact way, we then default to emitting a CIE and FDE.

llvm-svn: 133676
 2011-06-23 01:06:23 +00:00
Bill Wendling 21162219b4 80-column violations. 
llvm-svn: 133668
 2011-06-23 00:09:43 +00:00
Bill Wendling eb872e0471 Move class methods out-of-line. This reduces the indentation, and is more in 
line with LLVM's general coding style.
No functionality change.

llvm-svn: 133645
 2011-06-22 21:07:27 +00:00
Bill Wendling b3aaf95c4f Remove the subclassing. This will be moved to the ASM printer. 
llvm-svn: 133473
 2011-06-20 22:12:24 +00:00
Benjamin Kramer f7cb7ef996 Directly print to a raw_ostream instead of printing to a buffer first. 
llvm-svn: 133352
 2011-06-18 14:42:47 +00:00
Hans Wennborg 3fefc65c1d MC: Allow .common as alias for .comm assembler directive. PR10116. 
llvm-svn: 133349
 2011-06-18 13:51:54 +00:00
Bill Wendling 098321c145 * Override the "EmitBytes" function, since it can sneak values in that way. 
* Make this used only if CFI is used.

llvm-svn: 133319
 2011-06-18 00:19:35 +00:00
Bill Wendling 804e6d191b Remove false assertion. 
llvm-svn: 133314
 2011-06-17 23:42:01 +00:00
Bill Wendling 03cb993560 Disable for another investigation. 
llvm-svn: 133299
 2011-06-17 21:44:15 +00:00
Bill Wendling 23de6d07c4 Support only DwarfCFI or SjLj exception handling in LSDA decoder. 
llvm-svn: 133297
 2011-06-17 21:31:43 +00:00
Bill Wendling 590adcbcbf SjLj exception handling LSDA decoding support wasn't represented correctly. Use 
the correct values, etc. In particular, the exception handling type is SjLj, not
ARM.

llvm-svn: 133296
 2011-06-17 21:29:06 +00:00
Bill Wendling cc648ad092 Disable to investigate ARM failure. 
llvm-svn: 133293
 2011-06-17 21:09:50 +00:00
Bill Wendling b74b9de151 Use the verbose asm flag instead of a new flag for decoding the LSDA. 
llvm-svn: 133292
 2011-06-17 20:55:01 +00:00
Bill Wendling e303114b3c Add an option that allows one to "decode" the LSDA. 
The LSDA is a bit difficult for the non-initiated to read. Even with comments,
it's not always clear what's going on. This wraps the ASM streamer in a class
that retains the LSDA and then emits a human-readable description of what's
going on in it.

So instead of having to make sense of:

Lexception1:
        .byte   255
        .byte   155
        .byte   168
        .space  1
        .byte   3
        .byte   26
Lset0 = Ltmp7-Leh_func_begin1
      .long     Lset0
Lset1 = Ltmp812-Ltmp7
      .long     Lset1
Lset2 = Ltmp913-Leh_func_begin1
      .long     Lset2
      .byte     3
Lset3 = Ltmp812-Leh_func_begin1
      .long     Lset3
Lset4 = Leh_func_end1-Ltmp812
      .long     Lset4
      .long     0
      .byte     0
      .byte     1
      .byte     0
      .byte     2
      .byte     125
      .long     __ZTIi@GOTPCREL+4
      .long     __ZTIPKc@GOTPCREL+4

you can read this instead:

## Exception Handling Table: Lexception1
##  @LPStart Encoding: omit
##    @TType Encoding: indirect pcrel sdata4
##        @TType Base: 40 bytes
## @CallSite Encoding: udata4
## @Action Table Size: 26 bytes

## Action 1:
##   A throw between Ltmp7 and Ltmp812 jumps to Ltmp913 on an exception.
##     For type(s):  __ZTIi@GOTPCREL+4 __ZTIPKc@GOTPCREL+4
## Action 2:
##   A throw between Ltmp812 and Leh_func_end1 does not have a landing pad.

llvm-svn: 133286
 2011-06-17 20:35:21 +00:00
Benjamin Kramer 29a9d7653a Remove a useless copy of MCELFStreamer. Patch by Logan Chien! 
llvm-svn: 133272
 2011-06-17 18:05:30 +00:00
Jim Grosbach c7e6b8fed5 Diagnostic for undefined assembler local symbols. 
Re-apply 133010, with fixes for inline assembler.

Original commit message:
"When an assembler local symbol is used but not defined in a module, a
Darwin assembler wants to issue a diagnostic to that effect."

Added fix to only perform the check when finalizing, as otherwise we're not
done and undefined symbols may simply not have been encountered yet.

Passes "make check" and a self-host check on Darwin.

llvm-svn: 133071
 2011-06-15 18:33:28 +00:00
Jim Grosbach ed1da49673 Revert 133010. Self-hosted buildbot unhappy. 
Apparently llvm itself generates undefined assembler local labels, causing
self-hosting problems with this patch. Reverting until that's sorted out.

llvm-svn: 133013
 2011-06-14 21:51:20 +00:00
Jim Grosbach 627e780902 Diagnostic for undefined assembler local symbols. 
When an assembler local symbol is used but not defined in a module, a
Darwin assembler wants to issue a diagnostic to that effect.

rdar://9559714

llvm-svn: 133010
 2011-06-14 21:13:25 +00:00
Roman Divacky 4b5665a1f7 Fix emission of PPC64 assembler on non-darwin platforms by splitting 
VK_PPC_{HA,LO}16 into darwin and gas variants.

Darwin wants {ha,lo}16(symbol) while gnu as wants symbol@{ha,l}.

llvm-svn: 132802
 2011-06-09 20:25:38 +00:00
Jason W Kim 7fbe7914af Remove an uneeded switch - Turns out reloc results are identical w/o the switch. (face+palm) 
llvm-svn: 132790
 2011-06-09 19:13:45 +00:00
Roman Divacky 384ffa9a0e Make EmitIntValue() work properly on big-endian targets. 
llvm-svn: 132715
 2011-06-07 17:31:02 +00:00
Rafael Espindola 1134ab23df Basic support for macros with explicit arguments. 
We still don't handle

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

llvm-svn: 132656
 2011-06-05 02:43:45 +00:00
Rafael Espindola 940a0ee5ca Produce an undefined reference to _GLOBAL_OFFSET_TABLE_ if we have a 
VK_GOTOFF reloc. This matches as' behavior, but it is not clear why the linker
might need this, so I added a FIXME.

I could test this by duplicating test/MC/ELF/got.s, but it doesn't look
worthwhile.

llvm-svn: 132655
 2011-06-05 01:20:06 +00:00
Nick Lewycky 34fa1684e7 Add support for @GOTPTOFF in i386 mode. 
llvm-svn: 132643
 2011-06-04 17:38:07 +00:00
Jim Grosbach dac0238ed2 .cfi directive register parsing flexibility. 
Parsing a register name/number for .cfi directives can't assume that a
register name starts with a '%' token. Be more flexible and check for a
register number instead. Still unlikely to be perfect, but it allows us
to parse both plain identifiers as register names and integers as register
numbers, which is what we're wanting to support at this point.

llvm-svn: 132466
 2011-06-02 17:14:04 +00:00
Rafael Espindola d6860522b2 Don't hardcode the %reg format in the streamer. 
llvm-svn: 132451
 2011-06-02 02:34:55 +00:00
Joerg Sonnenberger af5f23ee07 Add new -d option to tblgen. It writes a make(1)-style dependency file. 
llvm-svn: 132395
 2011-06-01 13:10:15 +00:00
Rafael Espindola 08600bcf65 Use the dwarf->llvm mapping to print register names in the cfi 
directives.

Fixes PR9826.

llvm-svn: 132317
 2011-05-30 20:20:15 +00:00
Charles Davis 03eef62db0 Add a parameter to the Win64 EH section getters to get a section with a 
suffix (e.g. .xdata$myfunc). The suffix part isn't implemented yet, but
I'll get to it in the next patch.

Fix up all callers of the affected functions. Make them pass said suffix to
the function.

llvm-svn: 132205
 2011-05-27 19:09:24 +00:00
Charles Davis ea5dc3a67b Assorted fixes for Win64 EH unwind info emission: 
- Flip order of bitfields. This gets our output matching GAS.
- Handle case where the end of the prolog wasn't specified.
- If the resulting unwind info struct is less than 8 bytes, pad to 8 bytes.

Add a test for the latter two.

llvm-svn: 132188
 2011-05-27 15:10:25 +00:00
Charles Davis 6d1c4c73a9 Start keeping track of where the various unwind instructions are in the prolog. 
Use them to calculate the offset inside the prolog. Emit this value when
emitting the unwind codes.

llvm-svn: 132177
 2011-05-27 03:25:01 +00:00
Charles Davis 761313b28d Add missing break statements. Align UNWIND_INFO and RUNTIME_FUNCTION structs 
to 4 bytes.

I'm surprised no one caught the missing break statements.

llvm-svn: 132176
 2011-05-27 02:43:19 +00:00
Charles Davis a60cd577fd My attempt at fixing the leak reported by the valgrind buildbots. Valgrind will 
still report leaks, but they're spurious now. Valgrind cannot peer into
std::vector objects--or any dynamic array, for that matter--because it doesn't
know how big the array is.

llvm-svn: 132174
 2011-05-27 02:01:08 +00:00
Charles Davis 9dcee31aab Fix inverted conditional in SaveReg and SaveXMM. Err when the frame pointer is 
already defined, and err when the PushMachFrame operation isn't the first
operation (if specified at all).

llvm-svn: 132173
 2011-05-27 01:42:17 +00:00
Charles Davis 006e1c39d0 Test .seh_startchained and .seh_endchained parsing. 
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
 2011-05-26 02:45:47 +00:00
Charles Davis 2f6ecea19d Add tests for .seh_setframe and .seh_handlerdata parsing. Fix issues with 
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
 2011-05-25 21:43:45 +00:00
Charles Davis 828b00c0e1 Add tests for .seh_savereg and .seh_savexmm parsing. Once again, fix the 
buggy methods that parse these directives.

llvm-svn: 132045
 2011-05-25 04:51:25 +00:00
Charles Davis b0c4f39173 Add a test for .seh_pushframe parsing. Fix the bug exposed by it (and another 
one I found by inspection).

llvm-svn: 132037
 2011-05-25 04:08:15 +00:00
Charles Davis fc1e7ce850 Add a test for the .seh_handler directive. Fix problems with the parsing 
method exposed by the test. While we're at it, simplify the .seh_proc
parsing method.

llvm-svn: 132028
 2011-05-25 01:33:42 +00:00
Charles Davis f4ce8fde18 Test basic SEH directive-parsing functionality. Fix a latent bug exposed by 
this test.

llvm-svn: 132004
 2011-05-24 21:22:53 +00:00
Charles Davis 7f6176c3f9 Implement the rest of the SEH directive-parsing methods in the COFFAsmParser. 
Add a size alignment check to the .seh_stackalloc directive parser. Add a
more descriptive error message to the .seh_handler directive parser.

Add methods to the TargetAsmInfo struct in support of all this.

llvm-svn: 131992
 2011-05-24 20:06:30 +00:00
Jim Grosbach bae9fee95f Propagate error correctly in the MC Asm parser for leading '$' expressions. 
llvm-svn: 131918
 2011-05-23 20:36:04 +00:00
Charles Davis d9eafdcfd5 Implement .seh_stackalloc and .seh_pushframe parsing. 
I haven't implemented any of the ones that take registers yet. The problem is
that for x86-64 the streamer methods expect a native x86 register number (note:
%r8-%r15 want 8-15 instead of 0-7; same for %xmm8-%xmm15). I haven't figured
out exactly how I want to do that yet.

llvm-svn: 131899
 2011-05-23 16:43:09 +00:00
Charles Davis c7250faeb1 Add methods to parse the SEH directives to the COFFAsmParser. Implement some 
of them, particularly the ones that don't take arguments. Also implement
.seh_proc and .seh_handler.

llvm-svn: 131866
 2011-05-22 21:12:15 +00:00
Chris Lattner 1d068cc0b0 switch to using a smallvector to avoid allocations for most normal size instructions. 
llvm-svn: 131837
 2011-05-22 04:53:24 +00:00
Chris Lattner 0388fb0ee2 tidy some things up. 
llvm-svn: 131836
 2011-05-22 04:52:24 +00:00
Charles Davis bc2daa0f93 Implement emission of all Win64 exception tables. Make the COFF streamer emit 
these tables.

llvm-svn: 131833
 2011-05-22 04:15:07 +00:00
Charles Davis 1c8bd5ad7e Make the COFF streamer emit unwind info when processing a .seh_handlerdata 
directive.

Implement emission of Win64 EH unwind info.

Pull in <cassert> in MCWin64EH.h so it can use the assert() macro.

llvm-svn: 131832
 2011-05-22 03:01:05 +00:00
Charles Davis e636022b4d Don't allow unaligned offsets and sizes in the Win64 EH directives. 
Also, fix threshold for 'Big' register saves.

llvm-svn: 131830
 2011-05-22 00:56:20 +00:00
Charles Davis 6879634efd Don't allow .seh_handler and .seh_handlerdata directives inside chained 
unwind areas.

llvm-svn: 131795
 2011-05-21 17:36:25 +00:00
Charles Davis 8e8f59bdfb A handler for a function in the Win64 EH scheme can be both an unwind handler 
and an exception handler. Handle that case.

Also, add an 'Emitted' member to the MCWin64EHUnwindInfo struct. It will be
needed later.

llvm-svn: 131791
 2011-05-21 15:57:49 +00:00
Charles Davis 54254008ba Set the "LastFrameInst" field when streaming a .seh_setframe directive. This 
is needed for an upcoming patch.

llvm-svn: 131772
 2011-05-21 00:09:04 +00:00
Jim Grosbach 8aded86edb No reason not to allow defining the CFA as a reg w/ offset zero. 
llvm-svn: 131760
 2011-05-20 21:50:09 +00:00
Jim Grosbach 860b03b5f9 Add missing leading \t when printing .cfi_def_cfa in the asmstreamer. 
llvm-svn: 131755
 2011-05-20 21:22:37 +00:00
Rafael Espindola 1866808384 fixes target address tBL and tBLX and sets relocation type 
of tBL/tBLX to R_ARM_THM_CALL (ARM ELF 4.7.1.6)

Patch by koan-sin tan.

llvm-svn: 131748
 2011-05-20 20:01:01 +00:00
Charles Davis 9a115a4bd2 Now that they're implemented, make the Win64 EH MCAsmStreamer methods call 
super.

llvm-svn: 131743
 2011-05-20 18:19:22 +00:00
Charles Davis 24b31b6b7d "Implement" the HandlerData Win64 EH method in the base MCStreamer. 
There's really nothing to implement. All this really does is swap to a
pseudo-section that later gets written to the unwind info struct. That
needs to be implemented in the object streamers.

llvm-svn: 131734
 2011-05-20 16:06:22 +00:00
Rafael Espindola 1edfb17bc2 Looks like OS X assemblers (including MC) don't like 
foo:
bar = foo
.quad bar

Avoid producing it. Fixes PR9951.

llvm-svn: 131687
 2011-05-19 22:05:56 +00:00
Rafael Espindola 8e129296fe Misc code refactorings: 
* Remove unnecessary arguments now that ForceExpAbs is a method.
* Use ForceExpAbs in EmitAbsValue.

llvm-svn: 131683
 2011-05-19 21:40:34 +00:00
Charles Davis de745ba396 Implement the EndProlog Win64 EH method on the base MCStreamer. 
llvm-svn: 131679
 2011-05-19 21:24:54 +00:00
Charles Davis 7e6e8951af Implement the Win64 EH prolog instruction methods on the base MCStreamer. 
I had to change the API slightly to avoid overloading issues.

llvm-svn: 131666
 2011-05-19 19:35:55 +00:00
Joerg Sonnenberger 74ba2623ce Reapply 131644 including the missing header changes: 
Introduce -fatal-assembler-warnings for the obvious purpose

llvm-svn: 131655
 2011-05-19 18:00:13 +00:00
Eli Friedman 3e2f17499e Revert r131644; it's breaking the build. 
llvm-svn: 131653
 2011-05-19 17:48:09 +00:00
Charles Davis 4cd8856704 Turns out GAS does have Win64 EH directives. (It also supports WinCE EH.) Make 
ours compatible with GAS.

In retrospect, I should have emailed binutils about this earlier. Thanks to
Kai Tietz for pointing out that GAS already had SEH directives.

llvm-svn: 131652
 2011-05-19 17:46:39 +00:00
Joerg Sonnenberger 59b523169f Introduce -fatal-assembler-warnings for the obvious purpose 
llvm-svn: 131644
 2011-05-19 17:27:01 +00:00
Charles Davis b4222589bf Implement the StartChained and EndChained Win64 EH methods on MCStreamer. 
llvm-svn: 131629
 2011-05-19 04:04:13 +00:00
Charles Davis d991ec4e68 Implement the StartProc and EndProc Win64 EH methods on the base MCStreamer. 
Based largely on Rafael Espindola's work on CFI. Other methods soon to follow.

llvm-svn: 131623
 2011-05-19 02:49:00 +00:00
Charles Davis 27117af772 Remove comments as Chris requested. 
llvm-svn: 131590
 2011-05-18 22:13:51 +00:00
Cameron Zwarich 492f87de4e Fix an obvious typo in r131572. 
llvm-svn: 131579
 2011-05-18 21:29:07 +00:00
Charles Davis 77e0610d7c Add some more Win64 EH directives: 
- StartChained and EndChained delimit a chained unwind area, which can contain
  additional operations to be undone if an exception occurs inside of it.
- UnwindOnly declares that this function doesn't handle any exceptions. If it
  has a handler, it's an unwind handler instead of an exception handler.
- Lsda declares the location and size of the LSDA, which in the Win64 EH
  scheme is kept inside the UNWIND_INFO struct. Windows itself ignores the
  LSDA; it's used by the Language-Specific Handler (the "Personality Function"
  from DWARF).

llvm-svn: 131572
 2011-05-18 20:54:10 +00:00
Charles Davis 8d9c99042f Implement the Win64 EH directive methods for the assembly language streamer. 
GAS has no such directives (not even mingw-w64 GAS has them), so I took
creative license with their names in assembly. I prefixed them all with
"w64_" to avoid namespace collisions, for example. If I discover that GAS
has taken a different approach, I'll change ours to match.

llvm-svn: 131525
 2011-05-18 04:58:05 +00:00
Charles Davis 384041d0dc While thinking about how to know where the functions' boundaries are for 
the purposes of the Win64 EH tables, I realized we had no way to tell where
the function ends. (MASM bounds functions with PROC and ENDP keywords.)
Add a directive to delimit the end of the function, and rename the 'frame'
directive to more accurately reflect its duality with the new directive.

llvm-svn: 131522
 2011-05-18 04:47:22 +00:00
Charles Davis 2701815ed8 Add a method I forgot in the last commit. Don't worry, this one passed 
self-host :).

llvm-svn: 131421
 2011-05-16 21:13:58 +00:00
Jason W Kim 94c31fdd31 Add a FIXME reminder to remove ForceARMElfPIC switch. 
llvm-svn: 131411
 2011-05-16 16:35:21 +00:00
Rafael Espindola e90c1cb221 sets bit 0 of the function address of thumb function in .symtab 
("T is 1 if the target symbol S has type STT_FUNC and the
symbol addresses a Thumb instruction ;it is 0 otherwise."
from "ELF for the ARM Architecture" 4.7.1.2)

Patch by Koan-Sin Tan!

llvm-svn: 131406
 2011-05-16 16:17:21 +00:00
Charles Davis 2f10078ae7 Fix copy-pasto. 
llvm-svn: 131384
 2011-05-15 17:28:27 +00:00
Charles Davis af18d07ed6 Add stub methods to MCStreamer for emitting Win64 exception-handling 
information.

llvm-svn: 131382
 2011-05-15 17:20:01 +00:00
Matt Beaumont-Gay 7c6c90b35d Remove an unused variable and move a couple others inside DEBUG. 
llvm-svn: 131208
 2011-05-11 23:34:51 +00:00
Jason W Kim c09e726455 Address the last bit of relocation flag related divergence betweeen 
LLVM and binutils.

With this patch, there are no functional differences between the .o
produced directly from LLVM versus the .s to .o via GNU as, for relocation tags
at least, for both PIC and non-PIC modes.

Because some non-PIC reloc tags are used (legally) on PIC, so IsPCRel flag is
necessary but not sufficient to determine whether the overall codegen mode is
PIC or not. Why is this necessary? There is an incompatibility of how relocs
are emitted in the .rodata section.  Binutils PIC likes to emit certain relocs
as section relative offsets.  Non-PIC does not do this.

So I added a hidden switch on the ELFObjectwriter "-arm-elf-force-pic" which
forces the objectwriter to pretend that all relocs are for PIC mode.


Todo: Activate ForceARMElfPIC to true if -relocation-model=pic is selected
on llc.

Todo: There are probably more issues for PIC mode on ARM/MC/ELF...

Todo: Existing tests in MC/ARM/elf-reloc*.ll need to be converted over to .s 
tests as well as expanded to cover the gamut.

llvm-svn: 131205
 2011-05-11 22:53:06 +00:00
Rafael Espindola de32fa163f Avoid a gcc warning. 
llvm-svn: 131161
 2011-05-10 22:28:35 +00:00
Rafael Espindola 99f6735532 On MachO, unlike ELF, there should be no relocation to produce the CIE pointer. 
llvm-svn: 131149
 2011-05-10 20:59:42 +00:00
Rafael Espindola 2fe0ee1ce2 Rename DwarfRequiresRelocationForStmtList to 
DwarfRequiresRelocationForSectionOffset as this is not specific to StmtList.

llvm-svn: 131148
 2011-05-10 20:35:05 +00:00
Rafael Espindola d0d2354258 The EH symbols are only needed in eh_frame, not debug_frame. 
llvm-svn: 131146
 2011-05-10 19:51:53 +00:00
Rafael Espindola 27390b4a0e In a debug_frame the cfi offset is to the start of the debug_frame section! 
llvm-svn: 131129
 2011-05-10 15:20:23 +00:00
Rafael Espindola ec53aa9485 Add CFIStartSections to the asm printer. Add an assert that at least 
one of the sections is created.

llvm-svn: 131124
 2011-05-10 13:39:48 +00:00
Rafael Espindola 1ecb12fc57 Add support for producing .deubg_frame sections. 
llvm-svn: 131121
 2011-05-10 03:54:12 +00:00
Rafael Espindola b6444c0401 Small cleanups. 
llvm-svn: 131120
 2011-05-10 03:26:21 +00:00
Rafael Espindola b6089d6cac Factor some code into a new EmitFrames method. 
llvm-svn: 131119
 2011-05-10 03:14:15 +00:00
Rafael Espindola 0e130d1d37 Remove unused argument. 
llvm-svn: 131118
 2011-05-10 03:01:39 +00:00
Rafael Espindola 74b101f3e3 Parsing and plumbing for .cfi_sections. 
llvm-svn: 131117
 2011-05-10 01:10:18 +00:00
NAKAMURA Takumi 392445823d Eliminate an unused line to fix a warning. 
llvm-svn: 131078
 2011-05-08 23:19:04 +00:00
Rafael Espindola ab39c63538 Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy with 
the smaller encoding and this cuts 270336 bytes from a release version of
clang and 1246272 bytes from a debug build.

llvm-svn: 131067
 2011-05-08 14:35:21 +00:00
Rafael Espindola bcabcdcedd Switch Darwin to the generic CIE/FDE printer. 
llvm-svn: 131031
 2011-05-06 22:29:04 +00:00
Rafael Espindola a716096677 Dead code elimination. 
llvm-svn: 130984
 2011-05-06 14:56:22 +00:00
Rafael Espindola a4982bddf3 Don't produce a __debug_frame. 
I tested both gdb on a bootstrapped clang and and the gdb testsuite on OS X (snow leopard)
and both are happy using __eh_frame.

llvm-svn: 130937
 2011-05-05 18:43:39 +00:00
Rafael Espindola a75589171a Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, but 
it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.

While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.

llvm-svn: 130846
 2011-05-04 17:44:06 +00:00
Daniel Dunbar f6daf94ab2 MCDwarf: Don't save Twine to local variable, this is almost never safe to do 
(and should thus never be done).
 - Should fix a crash on win32.

llvm-svn: 130793
 2011-05-03 21:33:37 +00:00
Rafael Espindola fc8223670a Add r130623 back now that ELF has been fixed to work with -fno-dwarf2-cfi-asm. 
llvm-svn: 130658
 2011-05-01 15:44:13 +00:00
Rafael Espindola 750cb61553 GCC uses a different encoding of pointers in the FDE when using 
-fno-dwarf2-cfi-asm. Implement the same behavior.

llvm-svn: 130637
 2011-05-01 04:49:54 +00:00
Rafael Espindola fd05785324 Simplify the handling of pcrel relocations on ELF. Now we do the right thing 
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.

This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.

llvm-svn: 130634
 2011-05-01 03:50:49 +00:00
Rafael Espindola b7c2286055 Revert the previous patch while I figure out how to make llvm-gcc 
less agressive about disabling cfi on linux :-(

llvm-svn: 130626
 2011-04-30 23:03:44 +00:00
Rafael Espindola 5265bc483e Enable CFI on OS X. 
Currently the output should be almost identical to the one produced by CodeGen
to make the transition easier.

The only two differences I know of are:

* Some files get an extra advance loc of size 0. This will be fixed when
relaxations are enabled.
* The optimization of declaring an EH symbol as an external variable is not
implemented. This is a subset of adding the nounwind attribute, so we if really
this at -O0 we should probably do it at the IL level.

llvm-svn: 130623
 2011-04-30 22:29:54 +00:00
Rafael Espindola bde52bca69 Implement MCAsmStreamer::EmitEHSymAttributes. Doing this in the asm streamer 
is a bit ugly, but doing it on the base MCStreamer would be redundant
with the object streamer which does it using SD.

llvm-svn: 130611
 2011-04-30 16:34:57 +00:00
Rafael Espindola 0b474c2d15 Handle PrivateExtern eh symbols. 
llvm-svn: 130609
 2011-04-30 16:22:46 +00:00
Rafael Espindola a3181d12c6 Add all the plumbing needed for MC to expand cfi to the old tables in 
the final assembly. It is the same technique used when targeting
assemblers that don't support .loc.

llvm-svn: 130587
 2011-04-30 03:44:37 +00:00
Rafael Espindola 1d1eced025 Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr. 
llvm-svn: 130585
 2011-04-30 03:21:04 +00:00
Rafael Espindola 6a85f9b42e Avoid some uses of .uleb128. This is a small speedup and more importantly 
lets this code be used when producing assembly code for old assemblers without
uleb support.

llvm-svn: 130544
 2011-04-29 21:50:57 +00:00
Rafael Espindola 6c961e1b75 Implement MCAsmStreamer::EmitCFIDefCfa. 
llvm-svn: 130543
 2011-04-29 21:41:06 +00:00
Daniel Dunbar 72032861c6 MCAsmLayout: Add support for computing the symbol offset of variables. Not 
currently used, because variables don't get reported as being "defined".

llvm-svn: 130524
 2011-04-29 18:20:20 +00:00
Daniel Dunbar bea7b93c88 MC: Change variable symbols to be recognized as defined, by assigning their sections based on FindAssociatedSection(). 
llvm-svn: 130523
 2011-04-29 18:20:17 +00:00
Daniel Dunbar b200f93125 MC/Mach-O: Update getSymbolAddress() to support evaluation of variables. 
llvm-svn: 130522
 2011-04-29 18:13:42 +00:00
Daniel Dunbar 29ba55cfe4 MC/Mach-O: Allow emission of relocations for variables in some more cases. 
llvm-svn: 130520
 2011-04-29 18:10:47 +00:00
Daniel Dunbar b9c2b6c50d MC/Mach-O: Find section ordinal's by looking at the symbol, instead of assuming they are present in a fragment. 
llvm-svn: 130519
 2011-04-29 18:07:43 +00:00
Devang Patel 124ae13421 Hoist MCLineEntry construction AsmPrinter so that anyone who derives from AsmPrinter can have line number entries. 
PR 9810

llvm-svn: 130518
 2011-04-29 18:00:54 +00:00
Daniel Dunbar dc3e4cc5ed MCExpr: Add FindAssociatedSection, which attempts to mirror the 'as' semantics 
that associate sections with expressions.

llvm-svn: 130517
 2011-04-29 18:00:03 +00:00
Daniel Dunbar 1bf128eaeb MC/AsmParser: Generalize a check. 
llvm-svn: 130515
 2011-04-29 17:53:11 +00:00
Rafael Espindola 68067664c3 Last bit by bit compatibility patch to MCDwarf.cpp: If a FDE with no LSDA is 
assigned to a CIE that requires one, just output a 0.

llvm-svn: 130472
 2011-04-29 03:06:29 +00:00
Rafael Espindola 7c7151512c Add an alternative implementation of CIE and FDE emission that outputs them 
in the same order as the one in CodeGen.

llvm-svn: 130471
 2011-04-29 02:42:28 +00:00
Rafael Espindola 6bd6a70837 Add the getExprForFDESymbol method that responsible for computing the 
expressions used in the FDE to refer to symbols.

llvm-svn: 130437
 2011-04-28 21:04:39 +00:00
Rafael Espindola c5dac4df2e Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when 
converting the symbol passed to .cfi_personality into bytes is the file.

llvm-svn: 130400
 2011-04-28 16:09:09 +00:00
Rafael Espindola 349c3298da Mark the EH symbol global or weak if the corresponding function is. 
llvm-svn: 130397
 2011-04-28 12:50:37 +00:00
Rafael Espindola 2eeee8cfef Add a small temporary hack for producing identical eh_frame sections on OS X. 
This removes one of the main advantages of moving eh_frame to MC, but
makes the transition a lot easier to debug (run md5).

llvm-svn: 130379
 2011-04-28 04:04:14 +00:00
Rafael Espindola bf60fb0a37 Produce the EH_frame# symbols if needed. 
llvm-svn: 130378
 2011-04-28 03:26:11 +00:00
Rafael Espindola 96b07932a3 Forward isFunctionEHFrameSymbolPrivate. If it is false, produce the foo.eh 
symbols.

llvm-svn: 130375
 2011-04-28 02:46:42 +00:00
Rafael Espindola 27c0c9bb87 Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last 
non private symbol. This will be use for handling

foo:
  .cfi_startproc
  ...

On OS X where we have to create a foo.eh symbol.

llvm-svn: 130305
 2011-04-27 15:21:19 +00:00
Rafael Espindola ae124da625 Force some values to be absolute and align based on the FDE pointers size. A small 
step towards using .cfi_* on OS X.

llvm-svn: 130273
 2011-04-27 01:43:49 +00:00
Rafael Espindola 3584ab6cc6 No relocation produces a SLEB or ULEB, make sure they are handled in MC. 
llvm-svn: 130181
 2011-04-26 02:17:58 +00:00
Sebastian Redl 1b86ea80bb Give MC/MCDisassembler/Disassembler.h a header guard. 
llvm-svn: 130096
 2011-04-24 15:46:56 +00:00
Jay Foad 1a180156b6 Remove unused STL header includes. 
llvm-svn: 130068
 2011-04-23 19:53:52 +00:00
Chandler Carruth bab81b9797 Delete the other unused variable in this function. Sorry I missed this 
the first time through.

llvm-svn: 129969
 2011-04-22 01:29:18 +00:00
Chandler Carruth ea41470726 Remove an unused variable from a function. This is a likely cut-paste-o. 
Silences GCC warning.

I wonder why Clang doesn't warn on this...

llvm-svn: 129968
 2011-04-22 01:21:06 +00:00
Rafael Espindola 5395f44fe8 Compute the size of the FDE encoding instead of hard coding it. Update 
X8664_ELFTargetObjectFile::getFDEEncoding to match reality.

llvm-svn: 129959
 2011-04-22 00:08:43 +00:00
Rafael Espindola 6aea59268a Remove unused argument. 
llvm-svn: 129955
 2011-04-21 23:39:26 +00:00
Rafael Espindola ea61f22dd3 Don't pass address spaces to EmitULEB128IntValue. 
llvm-svn: 129953
 2011-04-21 23:26:40 +00:00
Rafael Espindola c3dc486752 Fix relative relocations. This is sufficient for running the rust testsuite with 
MC :-)

llvm-svn: 129923
 2011-04-21 18:36:50 +00:00
Rafael Espindola ed16477cb9 Behave like gnu as when a relocation crosses sections. 
llvm-svn: 129850
 2011-04-20 14:01:45 +00:00
Sean Callanan d897f39797 Made the MC disassembler check before accessing 
MCInst operands for ARM.  This allows it to be
more tolerant of malformed MCInsts or incorrect
instruction metadata.

llvm-svn: 129840
 2011-04-20 00:43:34 +00:00
Eli Friedman b2545fbc2a malloc elimination: it's a bad idea to use raw_svector_ostream on a 
small heap-allocated SmallString because it unconditionally forces a malloc.

(Revised version of r129688, with the necessary flush() call.)

llvm-svn: 129716
 2011-04-18 20:54:46 +00:00
Devang Patel 17740e70d5 Reduce clutter in asm output. Do not emit source location as comment for each instruction. 
llvm-svn: 129715
 2011-04-18 20:26:49 +00:00
Eli Friedman 3f8ecf5cc5 Revert r129688; it's breaking buildbots. 
llvm-svn: 129689
 2011-04-18 05:54:54 +00:00
Eli Friedman 2dc287a147 More malloc elimination: it's a bad idea to use raw_svector_ostream on a 
small heap-allocated SmallString because it unconditionally forces a malloc.

llvm-svn: 129688
 2011-04-18 05:38:58 +00:00
Eli Friedman 0e40208d7b Make the StringMaps attached to MCContext use the MCContext's allocator; 
reduces the number of calls to malloc().

llvm-svn: 129687
 2011-04-18 05:02:31 +00:00
Chris Lattner 0ab5e2cded Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Rafael Espindola 539d96f01d Be consistent about being virtual and returning void in the cfi methods. 
Implement the ones that were missing in the asm streamer.

llvm-svn: 129413
 2011-04-12 23:59:07 +00:00
Rafael Espindola fd794affe5 Remove LastOffset from the asm parser. 
llvm-svn: 129378
 2011-04-12 18:53:30 +00:00
Rafael Espindola 1ec0f46169 Fix the case of a .cfi_rel_offset before any .cfi_def_cfa_offset. 
llvm-svn: 129362
 2011-04-12 16:12:03 +00:00
Rafael Espindola 2e1c9d2188 Implement .cfi_same_value. 
llvm-svn: 129361
 2011-04-12 15:31:05 +00:00
Eric Christopher ffc0e1f6e6 Match case for invalid constant error messages and add a new 
test for invalid hexadecimals.

llvm-svn: 129326
 2011-04-12 00:18:03 +00:00
Eric Christopher 104af0619e To avoid printing out multiple error messages for cases like: 
.long 80+08

go ahead and assume that if we've got an Error token that we handled it
already. Otherwise if it's a token we can't handle then go ahead and
return the default error.

llvm-svn: 129322
 2011-04-12 00:03:13 +00:00
Eric Christopher 64749f2a89 Lex, and then fail on invalid constants. 
Testcase forthcoming.

rdar://8490596

llvm-svn: 129309
 2011-04-11 22:24:56 +00:00
Rafael Espindola 82065cb6cf Implement cfi_rel_offset 
llvm-svn: 129306
 2011-04-11 21:49:50 +00:00
Rafael Espindola ffd2e5163b implement .cfi_adjust_cfa_offset. 
llvm-svn: 129296
 2011-04-11 20:29:16 +00:00
Kevin Enderby 9377a52c12 Adding support for printing operands symbolically to llvm's public 'C' 
disassembler API.  Hooked this up to the ARM target so such tools as Darwin's
otool(1) can now print things like branch targets for example this:
  blx _puts
instead of this:
  blx #-36
And even print the expression encoded in the Mach-O relocation entried for
things like this:
  movt r0, :upper16:((_foo-_bar)+1234)

llvm-svn: 129284
 2011-04-11 18:08:50 +00:00
Benjamin Kramer 26e7768f38 Fix potential buffer overflow on win32. 
llvm-svn: 129214
 2011-04-09 14:06:12 +00:00
Benjamin Kramer 2b6c96b43d Don't store Twine temporaries, it's not safe. 
And don't append the name over and over again in the loop.

llvm-svn: 129210
 2011-04-09 11:26:27 +00:00
Sean Callanan 1426351c83 Redirected errors from the AsmParser to the proper 
error stream, in cases where the AsmParser is
being invoked by EDDisassembler.  Before, they
were being sent to errs() because no error handler
was installed in the SourceMgr.

llvm-svn: 129177
 2011-04-09 00:37:25 +00:00
Rafael Espindola b80875edee Micro optimization and improved similarity with gas' output: 
When two section names share a suffix, reuse the entry in shstrtab.

llvm-svn: 129115
 2011-04-07 23:21:52 +00:00
Rafael Espindola 88bc341061 Add support for .skip. 
Patch by Roman Divacky.
Fixes PR9361.

llvm-svn: 129106
 2011-04-07 20:26:23 +00:00
Sean Callanan 6c6be946fc Fixed a bug where missing EDInstInfo would cause 
tokenization to crash and burn.

llvm-svn: 129051
 2011-04-07 01:56:01 +00:00
Shantonu Sen e59f8ca49e An MCDisassembler has the option to not implement 
getEDInfo(), in which case this code would dereference
NULL. EDInst can already handle NULL info, so avoid
the dereference and pass NULL through.

Reviewed by Sean Callanan

llvm-svn: 128904
 2011-04-05 18:40:45 +00:00
Kevin Enderby 5bbe957155 Added support symbolic floating point constants in the MC assembler for Infinity 
and Nans with the same strings as GAS supports.  rdar://8673024

llvm-svn: 128488
 2011-03-29 21:11:52 +00:00
Francois Pichet 3cf622a832 Fix the MSVC build. 
llvm-svn: 128441
 2011-03-29 00:30:01 +00:00
Daniel Dunbar 4ee0d03274 MC: Add support for disabling "temporary label" behavior. Useful for debugging 
on Darwin.

llvm-svn: 128430
 2011-03-28 22:49:15 +00:00
Ted Kremenek 2d45693446 Unbreak CMake build. 
llvm-svn: 128426
 2011-03-28 20:43:53 +00:00
Kevin Enderby f3070dc40d Again adding a C API to the disassembler for use by such tools as Darwin's 
otool(1), this time with the needed fix for case sensitive file systems :) .
This is a work in progress as the interface for producing symbolic operands is
not done.  But a hacked prototype using information from the object file's
relocation entiries and replacing immediate operands with MCExpr's has been
shown to work with no changes to the instrucion printer.  These APIs will be
moved into a dynamic library at some point.

llvm-svn: 128415
 2011-03-28 18:25:07 +00:00
NAKAMURA Takumi af66980d8a Fix whitespace. 
llvm-svn: 128370
 2011-03-27 01:44:40 +00:00
Kevin Enderby d077a857cc Remove the files for r128308 as it is causing a buildbot failure. 
llvm-svn: 128309
 2011-03-26 00:23:05 +00:00
Kevin Enderby c8b4078654 Adding a C API to the disassembler for use by such tools as Darwin's otool(1). 
This is a work in progress as the interface for producing symbolic operands is
not done.  But a hacked prototype using information from the object file's
relocation entiries and replacing immediate operands with MCExpr's has been
shown to work with no changes to the instrucion printer.  These APIs will be
moved into a dynamic library at some point.

llvm-svn: 128308
 2011-03-26 00:06:33 +00:00
Daniel Dunbar 6f4c9425eb MC: Improve some diagnostics on uses of '.' pseudo-symbol. 
llvm-svn: 128289
 2011-03-25 17:47:17 +00:00
Daniel Dunbar 3f56104be1 Tidyness. 
llvm-svn: 128288
 2011-03-25 17:47:14 +00:00
Bruno Cardoso Lopes f170f8bff6 Add asm parsing support w/ testcases for strex/ldrex family of instructions 
llvm-svn: 128236
 2011-03-24 21:04:58 +00:00
Jim Grosbach a3df87fb01 Clean up assembly statement separator support. 
The MC asm lexer wasn't honoring a non-default (anything but ';') statement
separator. Fix that, and generalize a bit to support multi-character
statement separators.

llvm-svn: 128227
 2011-03-24 18:46:34 +00:00
Owen Anderson ab234158b8 Fix a bug introduced by my patch yesterday: BL is a 4-byte instructions like BLX, rather than a 2-byte instruction like B. 
llvm-svn: 128169
 2011-03-23 21:19:56 +00:00
Owen Anderson 6149a34102 RIT_ARM_ThumbBranch32Bit relocations are not used and should never be generated. 
This fixes kimwitu++, bullet, and tramp3dv4 with the ARM integrated assembler.
Fixes <rdar://problem/9165738>.

llvm-svn: 128117
 2011-03-22 22:52:54 +00:00
Owen Anderson 9746286bec Add support for Thumb interworking addresses for symbol offsets that get constant folded very early. 
This fixes SPASS with -integrated-as.  <rdar://problem/9165399>

llvm-svn: 128037
 2011-03-21 23:13:43 +00:00
Bill Wendling 00f0cddfd4 We need to pass the TargetMachine object to the InstPrinter if we are printing 
the alias of an InstAlias instead of the thing being aliased. Because we need to
know the features that are valid for an InstAlias.

This is part of a work-in-progress.

llvm-svn: 127986
 2011-03-21 04:13:46 +00:00
Rafael Espindola 1557fd6d39 Write the section table and the section data in the same order that 
gun as does. This makes it a lot easier to compare the output of both
as the addresses are now a lot closer.

llvm-svn: 127972
 2011-03-20 18:44:20 +00:00
Stuart Hastings 12d5312622 Reapply 127939 since Daniel fixed the breakage. <rdar://problem/9012638> 
llvm-svn: 127944
 2011-03-19 02:42:31 +00:00
Stuart Hastings 08b4daa191 Revert 127939. <rdar://problem/9012638> 
llvm-svn: 127943
 2011-03-19 02:33:56 +00:00
Stuart Hastings 83d4a28d1f Revise r126127 to address Daniel's comments. <rdar://problem/9012638> 
llvm-svn: 127939
 2011-03-19 01:32:01 +00:00
Daniel Dunbar f1d62cfc8f MC/Mach-O: Fix regression introduced in r126127, this assignment shouldn't have 
been removed.

llvm-svn: 127812
 2011-03-17 16:25:24 +00:00
Joerg Sonnenberger 07de07eeea Fix handling of @IDNTPOFF relocations, they need to get STT_TLS. 
While here, add VK_ARM_TPOFF and VK_ARM_GOTTPOFF, too.

llvm-svn: 127780
 2011-03-17 00:35:10 +00:00
Duncan Sands c2631d26c0 Silence compiler warning about case values not being in the enumerated type 
MCFixupKind.  This is the same technique that is used elsewhere in MC.

llvm-svn: 127676
 2011-03-15 08:54:51 +00:00
Sean Callanan 47f660aeaf Fixed the comparison operator for the enhanced 
disassembler's disassembler map.

llvm-svn: 127527
 2011-03-12 03:27:54 +00:00
Jan Sjödin 745fc89f62 Add constructors to MCElfStreamer and MCObjectStreamer to take an extra MCAssembler * argument. 
llvm-svn: 127343
 2011-03-09 17:33:05 +00:00
Jim Grosbach 14be61aeee Darwin 'as' silently ignores the '.ident' directive. 
llvm-svn: 127258
 2011-03-08 19:17:19 +00:00
Anton Korobeynikov e7410dd0d5 Preliminary support for ARM frame save directives emission via MI flags. 
This is just very first approximation how the stuff should be done
(e.g. ARM-only for now). More to follow.

llvm-svn: 127101
 2011-03-05 18:43:32 +00:00
Anton Korobeynikov a7ec2dcefd Some first rudimentary support for ARM EHABI: print exception table in "text mode". 
llvm-svn: 127099
 2011-03-05 18:43:15 +00:00
Joerg Sonnenberger 62f759791a Be nice to Xcore and the XMOS assembler and avoid quoting section names 
that contain only letters, digits and the characters "_" and ".".

llvm-svn: 127028
 2011-03-04 20:03:14 +00:00
Joerg Sonnenberger 852ab890b5 Bug#9033: For the ELF assembler output, always quote the section name. 
llvm-svn: 126963
 2011-03-03 22:31:08 +00:00
Jan Sjödin 771911e28b Split MCEELFStreamer and ELFObjectWriter into .h and .cpp files, so that other components can use them. 
llvm-svn: 126942
 2011-03-03 14:52:12 +00:00
Eli Friedman d92d17bf67 PR9352: Always emit a relocation for weak symbols. Not emitting relocations 
for calls to weak symbols with a definition has the appearance of working
with LLVM-generated code because weak symbol definitions are put in their
own sections.

llvm-svn: 126933
 2011-03-03 07:24:36 +00:00
Oscar Fuentes 98a3c80a3e Fixes warnings emitted by Visual Studio 2010 compiler. 
Patch by Erik Olofsson!

llvm-svn: 126796
 2011-03-01 23:11:57 +00:00
Jan Sjödin 30a52dec93 Make all static functions become static class methods. Move shared (duplicated) functions to new MCELF class. 
llvm-svn: 126686
 2011-02-28 21:45:04 +00:00
Cameron Zwarich fcf51fd298 Roll out r126425 and r126450 to see if it fixes the failures on the buildbots. 
llvm-svn: 126488
 2011-02-25 16:30:32 +00:00
Joerg Sonnenberger afb36fad99 Restore r125595 (reverted in r126336) with modifications: 
Introduce a variable in the AsmParserExtension whether [] is valid in an
expression. If it is true, parse them like (). Enable this for ELF only.

llvm-svn: 126443
 2011-02-24 21:59:22 +00:00
Devang Patel b037383a35 Enable DebugInfo support for COFF object files. 
Patch by Nathan Jeffords!

llvm-svn: 126425
 2011-02-24 21:04:00 +00:00
Benjamin Kramer c053644217 Plug some leaks in edis. 
- Don't leak parsed operands during tokenization.
- Don't leak printed insts in llvm-mc.

llvm-svn: 126381
 2011-02-24 11:03:19 +00:00
Jim Grosbach 0c03a3a146 Revert r125595, which is an X86-only undocumented assembly syntax extension 
enabled for all targets. Non-X86 targets should not have this behavior
enabled by default.

Joerg, if you would like to resubmit with the behavior conditionalized to be
X86-ELF only, that's fine.

llvm-svn: 126336
 2011-02-23 21:26:51 +00:00
Rafael Espindola 9e18e96264 Put in the symbol table symbols only used in a .globl statement. 
Fixes PR9292.

llvm-svn: 126330
 2011-02-23 20:22:07 +00:00
Sean Callanan 34770edf43 Fixed a bug in the enhanced disassembler that caused 
it to ignore valid uses of FS and GS as additional
base registers in address computations.  Added a test
case for this.

llvm-svn: 126302
 2011-02-23 03:31:28 +00:00
Stuart Hastings bf83659d11 Omit private_extern declarations of extern symbols; followup to 
r124468.  Patch by Rafael Avila de Espindola!

llvm-svn: 126297
 2011-02-23 02:27:05 +00:00
Joerg Sonnenberger 4f864d3111 Bug#9172: Don't use static in file scope, use an attribute on the 
parser.

llvm-svn: 126225
 2011-02-22 16:53:11 +00:00
Joerg Sonnenberger 37d5484d18 Handle FK_PCRel_1 and add a test case for this and FK_PCRel_4. 
llvm-svn: 126157
 2011-02-21 23:25:41 +00:00
Stuart Hastings d7927e0fcd End the line if we return early. Radar 9012638. 
llvm-svn: 126141
 2011-02-21 21:07:07 +00:00
Stuart Hastings b4863a41e9 Fix to correctly support attribute((section("__DATA, __common"))). 
Radar 9012638.

llvm-svn: 126127
 2011-02-21 17:27:17 +00:00
Joerg Sonnenberger eef2f9009d Use a vector of pairs to implement the section stack, not two 
independent vectors.

llvm-svn: 126099
 2011-02-21 01:07:42 +00:00
Rafael Espindola f849bf81bd Add some limited support for labels in org directives. Hopefully enough to fix 
PR9245.

llvm-svn: 126091
 2011-02-20 20:20:07 +00:00
Oscar Fuentes 5ed962656c Move library stuff out of the toplevel CMakeLists.txt file. 
llvm-svn: 125968
 2011-02-18 22:06:14 +00:00
Rafael Espindola 490d02a334 Gas is very inconsistent about when a relaxation/relocation is needed. Do 
the right thing and stop trying to copy it. Fixes PR8944.

llvm-svn: 125648
 2011-02-16 03:25:55 +00:00
Rafael Espindola 58ac6e1677 Add support for pushsection and popsection. Patch by Joerg Sonnenberger. 
llvm-svn: 125629
 2011-02-16 01:08:29 +00:00
Roman Divacky 4e0f4957bc Add support for parsing [expr]. 
This is submitted by Joerg Sonnenberger and fixes his PR8685.

llvm-svn: 125595
 2011-02-15 20:43:39 +00:00
Rafael Espindola 70d8015063 Switch llvm to using comdats. For now always use groups with a single 
section.

llvm-svn: 125526
 2011-02-14 22:23:49 +00:00
Rafael Espindola 85bc995c5b Move broken HasCommonSymbols to ELFWriter.cpp. 
llvm-svn: 125490
 2011-02-14 16:51:08 +00:00
Jim Grosbach 01af6c4641 More whitespace cleanup... 
llvm-svn: 125388
 2011-02-11 19:05:56 +00:00
Shantonu Sen fd3e83953f Fix comparator used for looking up previously instantiated EDDisassemblers. 
Now, Syntax is only used as a tie-breaker if the Arch
matches. Previously, a request for x86_64 disassembler followed by the
i386 disassembler in a single process would return the cached x86_64
disassembler. Fixes <rdar://problem/8958982>

llvm-svn: 125215
 2011-02-09 21:03:19 +00:00
Benjamin Kramer 7b7caf51e9 Support for .ifdef / .ifndef in the assembler parser. Patch by Joerg Sonnenberger. 
llvm-svn: 125120
 2011-02-08 22:29:56 +00:00
Jason W Kim 202630c6ee Teach ARM/MC/ELF about gcc compatible reloc output to get past odd linkage 
failures with relocations.

The code committed is a first cut at compatibility for emitted relocations in
ELF .o.

Why do this? because existing ARM tools like emitting relocs symbols as
explicit relocations, not as section-offset relocs.

Result is that with these changes,
1) relocs are now substantially identical what to gcc outputs.
2) larger apps (including many spec2k tests) compile, cross-link, and pass

Added reminder fixme to tests for future conversion to .s form.

llvm-svn: 124996
 2011-02-07 01:11:15 +00:00
Jason W Kim 4761fba833 Teach ARM/MC/ELF about EF_ARM_EABI_VERSION. The magic number is set to 
5 to match the current doc.
Added FIXME reminder Make it really configurable later.

llvm-svn: 124899
 2011-02-04 21:41:11 +00:00
Jason W Kim d2e2f56c36 Teach ARM/MC/ELF to handle R_ARM_JUMP24 relocation type for conditional jumps. 
(yes, this is different from R_ARM_CALL)

- Adds a new method getARMBranchTargetOpValue() which handles the
  necessary distinction between the conditional and unconditional br/bl
  needed for ARM/ELF

At least for ARM mode, the needed fixup for conditional versus unconditional
br/bl is identical, but the ARM docs and existing ARM tools expect this
reloc type...

Added a few FIXME's for future naming fixups in ARMInstrInfo.td

llvm-svn: 124895
 2011-02-04 19:47:15 +00:00
Bob Wilson 813bdf6e58 Do not sign extend floating-point values in the asm parser. 
llvm-svn: 124831
 2011-02-03 23:17:47 +00:00
Evan Cheng dfc85ed01e Fix bogus assert condition noticed by Csaba Raduly. 
llvm-svn: 124645
 2011-02-01 01:50:49 +00:00
Roman Divacky 9a58919c8e Enumerate .code16/32/64 instead of checking .code prefix. This 
unbreaks some ARM tests.

llvm-svn: 124608
 2011-01-31 21:19:43 +00:00
Roman Divacky bd59dff739 Error on all .code* directives instead of just .code16 as they 
all lead to a silent miscompilation of code.

llvm-svn: 124603
 2011-01-31 20:56:49 +00:00
Roman Divacky cd9ae95ae7 Error on .code16 instead of producing wrong (32bit) code. 
llvm-svn: 124498
 2011-01-28 19:29:48 +00:00
Roman Divacky 7e9e290952 Add support for parsing .float 
llvm-svn: 124485
 2011-01-28 14:20:32 +00:00
Nico Weber 4ada0d9164 PR8951: Support for .equiv in integrated assembler, patch by Jörg Sonnenberger! 
llvm-svn: 124467
 2011-01-28 03:04:41 +00:00
Roman Divacky ed5efb4053 Add support for specifying register name in cfi-register/offset/def 
as well as register number.

llvm-svn: 124379
 2011-01-27 17:16:37 +00:00
Bill Wendling cdbf17b179 Add support for parsing a Real value. It stores the Real value as its binary 
encoding. It's up to the individual back-ends to convert it to their preferred
representation when printing.

llvm-svn: 124229
 2011-01-25 21:26:41 +00:00
Rafael Espindola 689939e648 Handle strings in section names the same way as gas: 
* If the name is a single string, we remove the quotes
* If the name starts without a quote, we include any quotes in the name

llvm-svn: 124127
 2011-01-24 18:02:54 +00:00
Rafael Espindola b3eca9bb71 Add support for the --noexecstack option. 
llvm-svn: 124077
 2011-01-23 17:55:27 +00:00
Rafael Espindola 8bac423ddb Add support for lowercase variants. 
llvm-svn: 124071
 2011-01-23 16:11:25 +00:00
Rafael Espindola 4b7b7fba38 Delay the creation of eh_frame so that the user can change the defaults. 
Add support for SHT_X86_64_UNWIND.

llvm-svn: 124059
 2011-01-23 05:43:40 +00:00
Rafael Espindola 0e7e34e476 Remove more duplicated code. 
llvm-svn: 124056
 2011-01-23 04:43:11 +00:00
Rafael Espindola aea4958ea6 Remove duplicated code. 
llvm-svn: 124054
 2011-01-23 04:28:49 +00:00
Jim Grosbach 493c0fbde8 Make sure to propogate the error code when we fail to parse a modifier. 
llvm-svn: 123857
 2011-01-19 23:06:07 +00:00
Anton Korobeynikov e2bea1c82e Use common style for .cfi directives 
llvm-svn: 123472
 2011-01-14 21:57:39 +00:00
Evan Cheng d4a5c05c97 Completed :lower16: / :upper16: support for movw / movt pairs on Darwin. 
- Fixed :upper16: fix up routine. It should be shifting down the top 16 bits first.
- Added support for Thumb2 :lower16: and :upper16: fix up.
- Added :upper16: and :lower16: relocation support to mach-o object writer.

llvm-svn: 123424
 2011-01-14 02:38:49 +00:00
Evan Cheng 52899a9c34 Add comment about Thumb2 fixup comments being completely bogus. 
llvm-svn: 123411
 2011-01-13 23:27:39 +00:00
Evan Cheng 0447d30939 Relax an assertion. On archs like ARM, an immediate field may be scattered. So it's possible for some bits of every 8 bits to be encoded already, and the rest still needs to be fixed up. 
llvm-svn: 123403
 2011-01-13 21:45:26 +00:00
Evan Cheng 965b3c7323 Model :upper16: and :lower16: as ARM specific MCTargetExpr. This is a step 
in the right direction. It eliminated some hacks and will unblock codegen
work. But it's far from being done. It doesn't reject illegal expressions,
e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all.

llvm-svn: 123369
 2011-01-13 07:58:56 +00:00
Jason W Kim 39e36e7ab4 Style clean up - break up the breaks. 
llvm-svn: 123347
 2011-01-13 00:07:51 +00:00
Jason W Kim 9c5b65d289 1. Support ELF pcrel relocations for movw/movt: 
R_ARM_MOVT_PREL and R_ARM_MOVW_PREL_NC.
2. Fix minor bug in ARMAsmPrinter - treat bitfield flag as a bitfield, not an enum.
3. Add support for 3 new elf section types (no-ops)

llvm-svn: 123294
 2011-01-12 00:19:25 +00:00
Anton Korobeynikov 2f93128109 Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 
llvm-svn: 123170
 2011-01-10 12:39:04 +00:00
Rafael Espindola 3686473578 Fix PR8878. 
llvm-svn: 122658
 2011-01-01 19:05:35 +00:00
Benjamin Kramer 570dd787a6 Make a bunch of symbols internal. 
llvm-svn: 122642
 2010-12-30 22:34:44 +00:00
Daniel Dunbar ab14a6f174 MC/Mach-O/Thumb: Set the thumb bit in the symbol table. 
llvm-svn: 122630
 2010-12-29 14:14:06 +00:00
Rafael Espindola 46a5b05207 Correctly encode pcrel|indirect. 
llvm-svn: 122624
 2010-12-29 04:31:26 +00:00
Rafael Espindola 2ae93b2c9c Remove second return. 
llvm-svn: 122616
 2010-12-29 02:42:33 +00:00
Rafael Espindola 563301dfdb Fix bug when trying to output uint16_t or uint32_t. 
llvm-svn: 122615
 2010-12-29 02:30:49 +00:00
Rafael Espindola 290d71671e Implement cfi_def_cfa. Also don't convert to dwarf reg numbers twice. Looks 
like 6 is a fixed point of that and so the previous tests were OK :-)

llvm-svn: 122614
 2010-12-29 01:42:56 +00:00
Rafael Espindola 426e68f793 Implement cfi_def_cfa_register. 
llvm-svn: 122612
 2010-12-29 00:26:06 +00:00
Rafael Espindola 86d347dd31 Initial .cfi_offset implementation. 
llvm-svn: 122611
 2010-12-29 00:09:59 +00:00
Rafael Espindola 6bbfb6c06c Don't produce a "DW_CFA_advance_loc 0". 
llvm-svn: 122609
 2010-12-28 23:38:03 +00:00
Rafael Espindola 85d91982ca Implement .cfi_remember_state and .cfi_restore_state. 
llvm-svn: 122602
 2010-12-28 18:36:23 +00:00
Benjamin Kramer b6d52b8b64 Cast away "comparison between signed and unsigned integer" warnings. 
llvm-svn: 122598
 2010-12-28 13:52:52 +00:00
Duncan Sands 3784c5ea3c Fix warning about size potentially being used uninitialized 
when doing a release build.

llvm-svn: 122594
 2010-12-28 10:02:42 +00:00
Rafael Espindola 736a35d9ab Relax address updates in the eh_frame section. 
llvm-svn: 122591
 2010-12-28 05:39:27 +00:00
Rafael Espindola a75b87b55a Start adding basic support for emitting the call frame instructions. 
llvm-svn: 122590
 2010-12-28 04:15:37 +00:00
Rafael Espindola 1de2dd0e5e Add support for .cfi_lsda. 
llvm-svn: 122584
 2010-12-27 15:56:22 +00:00
Daniel Dunbar a895c69431 MC/Mach-O/Thumb: Select appropriate relocation types for Thumb. 
llvm-svn: 122583
 2010-12-27 14:49:49 +00:00
Rafael Espindola 8fc59a682f Handle reloc_riprel_4byte_movq_load. Should make the bots happy. 
llvm-svn: 122579
 2010-12-27 02:03:24 +00:00
Rafael Espindola 2ac8355ecd Add support for the same encodings of the personality function that gnu as 
supports.

llvm-svn: 122577
 2010-12-27 00:36:05 +00:00
Rafael Espindola 54462cd730 Fix .cfi_personality on 32 bit systems. 
llvm-svn: 122570
 2010-12-26 22:47:37 +00:00
Rafael Espindola 9ae2d05d45 Add support for @note. Patch by Jörg Sonnenberger. 
llvm-svn: 122568
 2010-12-26 21:30:59 +00:00
Rafael Espindola 9141b611ad Add basic support for .cfi_personality. 
llvm-svn: 122566
 2010-12-26 20:20:31 +00:00
Chris Lattner 03a102bff3 Generalize a previous change, fixing PR8855 - an valid large immediate 
rejected by the mc assembler.

llvm-svn: 122557
 2010-12-25 21:36:35 +00:00
Rafael Espindola 0f8abeba1d Merge IsFixupFullyResolved and IsSymbolRefDifferenceFullyResolved. We now 
have a single point where targets test if a relocation is needed.

llvm-svn: 122549
 2010-12-24 21:22:02 +00:00
Daniel Dunbar 7f2bb4dcae MC/Mach-O/ARM: Start handling some Thumb branches. 
llvm-svn: 122547
 2010-12-24 16:41:46 +00:00
Kevin Enderby fa3c6f148c In llvm-mc parse a Hash token as a full line comment. Allows handling of 
preprocessed .s files and matches darwin gas.  rdar://8798690
Also fix a comment on the next line of AsmParser.cpp after this new code.

llvm-svn: 122531
 2010-12-24 00:12:02 +00:00
Rafael Espindola 4124ab1255 Add r122359 back now that the bug in MCDwarfLineAddrFragment fragment has been 
fixed.

llvm-svn: 122448
 2010-12-22 22:16:24 +00:00
Rafael Espindola d91e11932c Assert that the AddrDelta expression is really constant and wrap it in a set 
if we have a lame assembler.

llvm-svn: 122446
 2010-12-22 22:04:28 +00:00
Rafael Espindola a6cd2d821a Rename NeedsSetToChangeDiffSize to HasAggressiveSymbolFolding which is a much 
better name and matches what is used in the MachO writer.

llvm-svn: 122443
 2010-12-22 21:51:29 +00:00
Daniel Dunbar ac8173cf71 MC/Mach-O/ARM: Don't try to use scattered relocs for BR24 fixups. 
llvm-svn: 122441
 2010-12-22 21:26:43 +00:00
Rafael Espindola 0e14b61c0b Revert r122359 while I debug PR8845. 
llvm-svn: 122427
 2010-12-22 19:05:49 +00:00
Matt Beaumont-Gay 6b5d2519b3 Fix another conditional expression mismatched enum type warning. 
llvm-svn: 122419
 2010-12-22 18:25:55 +00:00
Daniel Dunbar 45140d2efc MC/Mach-O/ARM: We always use the SECTDIFF reloc type on ARM, which is 
esp. important given that the LOCAL_SECTDIFF enumeration got redefined.

llvm-svn: 122412
 2010-12-22 16:52:19 +00:00
Daniel Dunbar 11617c8666 MC/Mach-O/ARM: Clone off an ARM version of RecordScatteredRelocation until I figure out how it is supposed to work. 
llvm-svn: 122410
 2010-12-22 16:45:29 +00:00
Daniel Dunbar dde72ef0c1 MC/Mach-O: Return to reporting errors if we see unexpected fixup kinds. 
llvm-svn: 122409
 2010-12-22 16:32:41 +00:00
Daniel Dunbar a191cfd97e MC/Mach-O/ARM: Recognize generic _Data_N fixup kinds. 
llvm-svn: 122408
 2010-12-22 16:32:37 +00:00
Daniel Dunbar 9ccf843a61 MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations. 
llvm-svn: 122407
 2010-12-22 16:19:24 +00:00
Daniel Dunbar 56f13732e2 MC/Mach-O/ARM: Fix thinko. 
llvm-svn: 122406
 2010-12-22 16:19:20 +00:00
Rafael Espindola 50ce2f06de Use references and simplify. 
llvm-svn: 122405
 2010-12-22 16:11:57 +00:00
Rafael Espindola 73c0ae77ca Simplify the handling of .size expressions. 
llvm-svn: 122404
 2010-12-22 16:03:00 +00:00
Daniel Dunbar 083132e131 MC/Mach-O/ARM: Stub out RecordARMRelocation, which is mostly a copy of 
RecordRelocation with lots of FIXMEs.

llvm-svn: 122402
 2010-12-22 13:50:05 +00:00
Daniel Dunbar a63db77f2e Simplify. 
llvm-svn: 122401
 2010-12-22 13:49:56 +00:00
Daniel Dunbar 1e5be3653c MC/Mach-O: Split out RecordARMRelocation for now, it is weird enough it isn't 
clear how to keep in the generic path (yet).
 - Will revisit when it actually works.

llvm-svn: 122400
 2010-12-22 13:49:43 +00:00
Matt Beaumont-Gay 890cb2d506 GCC objects to the two sides of a conditional expression having different enum 
types, but they're just getting converted to unsigned anyway, so cast first
(and ask questions later).

llvm-svn: 122377
 2010-12-21 23:43:23 +00:00
Rafael Espindola a468ae02cb Simplify EvaluateAsAbsolute now that EvaluateAsRelocatableImpl does all 
the folding it can.

llvm-svn: 122359
 2010-12-21 20:51:42 +00:00
Rafael Espindola 6bdb49ded8 Don't relax org or align. They change size as the relaxation happens, but they 
are not actually relaxed. For example, a section with only alignments will never
needs relaxation.

llvm-svn: 122356
 2010-12-21 20:35:18 +00:00
Daniel Dunbar ff78eda678 MC/Mach-O: Shuffle enums a bit to make it harder to inadvertently use the wrong 
type.

llvm-svn: 122334
 2010-12-21 15:26:45 +00:00
Rafael Espindola 98d93c5294 Layout one section until no relaxations are done and then move to the next 
section.

This helps because in practice sections form a dag with debug sections pointing
to text sections. Finishing up the text sections first makes the debug section
relaxation trivial.

llvm-svn: 122314
 2010-12-21 04:22:09 +00:00
Roman Divacky 55184ddd35 Set the value of absolute symbols. 
llvm-svn: 122268
 2010-12-20 21:14:39 +00:00
Nick Lewycky 0de20af7ba Add missing standard headers. Patch by Joerg Sonnenberger! 
llvm-svn: 122193
 2010-12-19 20:43:38 +00:00
Rafael Espindola ee54636f0a Fixed version of 122160 (the previous one would fold undefined symbols). 
llvm-svn: 122167
 2010-12-19 04:18:56 +00:00
Rafael Espindola 9a2d4e04c7 Revert 122160 while I debug it. 
llvm-svn: 122165
 2010-12-19 03:22:05 +00:00
Rafael Espindola 6fd80a5593 Move all folding to AttemptToFoldSymbolOffsetDifference. 
llvm-svn: 122160
 2010-12-19 02:15:04 +00:00
Roman Divacky 71d29167ea Add support for lexing single quotes like 'c'. 
This fixed 8615.

llvm-svn: 122150
 2010-12-18 08:56:37 +00:00
Rafael Espindola b403e098a1 Merge isAbsolute into IsSymbolRefDifferenceFullyResolved. 
llvm-svn: 122148
 2010-12-18 06:27:54 +00:00
Rafael Espindola 8396dd0893 Remove the MCObjectFormat class. 
llvm-svn: 122147
 2010-12-18 05:37:28 +00:00
Rafael Espindola 293a7c1840 Add a FIXME and explain a hack. 
llvm-svn: 122144
 2010-12-18 04:19:20 +00:00
Rafael Espindola 1ea7f18caa Fix the note. 
llvm-svn: 122139
 2010-12-18 04:01:45 +00:00
Rafael Espindola 5004f4a9b5 Revert 122011, 122012, 122013, 122023 adding back an important optimization. 
I added a note, but suggestions on how to add a test are really welcome.

llvm-svn: 122138
 2010-12-18 03:57:21 +00:00