Commit Graph

1288 Commits

Author SHA1 Message Date
Jim Grosbach e119da1146 Thumb unconditional branch binary encoding. rdar://8754994
llvm-svn: 121496
2010-12-10 18:21:33 +00:00
Rafael Espindola 0a017a6db2 Fixed version of 121434 with no new memory leaks.
llvm-svn: 121471
2010-12-10 07:39:47 +00:00
Rafael Espindola a945a34c73 Revert my previous patch to make the valgrind bots happy.
llvm-svn: 121461
2010-12-10 04:01:09 +00:00
Rafael Espindola 56eb741237 Initial support for the cfi directives. This is just enough to get
f:
        .cfi_startproc
        nop
        .cfi_endproc

assembled (on ELF).

llvm-svn: 121434
2010-12-09 23:48:29 +00:00
Rafael Espindola d66e65df03 Use const references.
llvm-svn: 121426
2010-12-09 23:08:35 +00:00
Owen Anderson 3ef19d9d48 Fix an issue in some Thumb fixups, where the effective PC address needs to be 4-byte aligned when calculating
the offset.  Add a new fixup flag to represent this, and use it for the one fixups that I have a testcase for needing
this.  It's quite likely that the other Thumb fixups will need this too, and to have their fixup encoding logic
adjusted accordingly.

llvm-svn: 121408
2010-12-09 20:27:52 +00:00
Jim Grosbach 68b27eb9d1 Rename CB/CBZ specific fixup accordingly.
llvm-svn: 121404
2010-12-09 19:50:12 +00:00
Devang Patel 3ebe3defe3 Add assert to catch an attempt to emit .byte 256
llvm-svn: 121402
2010-12-09 19:26:21 +00:00
Jason W Kim c79c5f6e8c ARM/MC/ELF TPsoft is now a proper pseudo inst.
Added test to check bl __aeabi_read_tp gets emitted properly for ELF/ASM
as well as ELF/OBJ (including fixup)

Also added support for ELF::R_ARM_TLS_IE32

llvm-svn: 121312
2010-12-08 23:14:44 +00:00
Bill Wendling a7d6aa902a Support the "target" encodings for the CB[N]Z instructions.
llvm-svn: 121308
2010-12-08 23:01:43 +00:00
Bill Wendling 8a6449c46e Add support for loading from a constant pool.
llvm-svn: 121226
2010-12-08 01:57:09 +00:00
Jim Grosbach 87055ed6f4 Let target asm backends see assembler flags as they go by. Use that to handle
thumb vs. arm mode differences in WriteNopData().

llvm-svn: 121219
2010-12-08 01:16:55 +00:00
Rafael Espindola 6624f47272 Layout each section independently. With the testcase in PR8711:
before:
        4 assembler - Number of assembler layout and relaxation steps
    78563 assembler - Number of emitted assembler fragments
  8693904 assembler - Number of emitted object file bytes
   271223 assembler - Number of evaluated fixups
330771677 assembler - Number of fragment layouts
     5958 assembler - Number of relaxed instructions
  2508361 mcexpr    - Number of MCExpr evaluations

real	0m26.123s
user	0m25.694s
sys	0m0.388s

after:

      4 assembler - Number of assembler layout and relaxation steps
  78563 assembler - Number of emitted assembler fragments
8693904 assembler - Number of emitted object file bytes
 271223 assembler - Number of evaluated fixups
 231507 assembler - Number of fragment layouts
   5958 assembler - Number of relaxed instructions
2508361 mcexpr    - Number of MCExpr evaluations

real	0m2.500s
user	0m2.113s
sys	0m0.273s

And yes, the outputs are identical :-)

llvm-svn: 121207
2010-12-07 23:32:26 +00:00
Rafael Espindola e78d3b38de Fix absolute recording of differences of symbols in two sections. Reduced from ctor_dtor_count-2.cpp.
llvm-svn: 121152
2010-12-07 17:12:32 +00:00
Rafael Espindola bdbe5a712d Fix relocations with weak definitions.
llvm-svn: 121114
2010-12-07 05:57:28 +00:00
Rafael Espindola 2eabaae459 Fix pcrel relocations that cross sections.
llvm-svn: 121107
2010-12-07 03:50:14 +00:00
Rafael Espindola a2421ec705 Fix a crash reduced from gcc produced assembly.
llvm-svn: 121085
2010-12-07 01:09:54 +00:00
Rafael Espindola 93e3cf0ebd Sorry for such a large commit. The summary is that only MachO cares about the
actuall addresses in a .o file, so it is better to let the MachO writer compute
it.

This is good for two reasons. First, areas that shouldn't care about
addresses now don't have access to it. Second, the layout of each section
is independent. I should use this in a subsequent commit to speed it up.

Most of the patch is just removing the section address computation. The two
interesting parts are the change on how we handle padding in the end
of sections and how MachO can get the address of a-b when a and b are in
different sections.

Since now the expression evaluation normally doesn't know the section address,
it will think that a-b needs relocation and let the MachO writer know. Once
it has computed the section addresses, it calls back the expression evaluation
with the section addresses to resolve these expressions.

The remaining problem is the handling of padding. Currently it will create
a special alignment fragment at the end. Since that fragment doesn't update
the alignment of the section, it needs the real address to be computed.

Since now the layout will not compute a-b with a and b in different sections,
the only effect that the special alignment fragment has is update the
address size of the section. This can also be done by the MachO writer.

llvm-svn: 121076
2010-12-07 00:27:36 +00:00
Jim Grosbach 9e1994698d Add fixup for Thumb1 BL/BLX instructions.
llvm-svn: 121072
2010-12-06 23:57:07 +00:00
Rafael Espindola 1055f72b97 Use references to simplify the code a bit.
llvm-svn: 121050
2010-12-06 22:30:54 +00:00
Jason W Kim 495c2bb9a6 Refactor ELFObjectWriter.
+ ARM/X86/MBlaze now share a common RecordRelocation
+ ARM/X86/MBlaze arch specific routines are limited to GetRelocType()

llvm-svn: 121043
2010-12-06 21:57:34 +00:00
Rafael Espindola e134b08daa use getSymbolOffset.
llvm-svn: 121041
2010-12-06 21:51:55 +00:00
Rafael Espindola 408344017e Another use of getSymbolOffset.
llvm-svn: 121034
2010-12-06 19:55:05 +00:00
Rafael Espindola 0f30fec0bd Remove the instruction fragment to data fragment lowering since it was causing
freed data to be read. I will open a bug to track it being reenabled.

llvm-svn: 121028
2010-12-06 19:08:48 +00:00
Rafael Espindola 44bbe36de6 Second try at making direct object emission produce the same results
as llc + llvm-mc. This time ELF is not changed and I tested that llvm-gcc
bootstrap on darwin10 using darwin9's assembler and linker.

llvm-svn: 121006
2010-12-06 17:27:56 +00:00
Rafael Espindola dee3062373 Revert previous two patches while I try to find out how to make both
linux and darwin assemblers happy :-(

llvm-svn: 121004
2010-12-06 15:35:15 +00:00
Rafael Espindola 34a06a0802 Add an EmitAbsValue helper method and use it in cases where we want to be sure
that no relocations are used (on MochO).
Fixes llc producing different output from llc + llvm-mc.

llvm-svn: 121000
2010-12-06 14:53:14 +00:00
Rafael Espindola baf2f3b3eb Remove the getAddress getter, initialize Ordinal in the constructor and use
that on the ELF writer to detect a section we created.

llvm-svn: 120981
2010-12-06 03:48:09 +00:00
Rafael Espindola 46e40188f7 Simplify a bit.
llvm-svn: 120980
2010-12-06 03:36:43 +00:00
Rafael Espindola 45790b82af Use getSymbolOffset on the COFF writer.
llvm-svn: 120979
2010-12-06 03:24:04 +00:00
Rafael Espindola ac60adb38d Don't use PadSectionToAlignment on windows.
llvm-svn: 120978
2010-12-06 03:03:44 +00:00
Rafael Espindola e7284c3671 Add a getSymbolOffset method and use it in the ELF writer.
llvm-svn: 120977
2010-12-06 02:57:26 +00:00
Rafael Espindola 8867390cf2 Once the layout is done we don't need to keep updating which fragments are
valid. Addresses will not change.

llvm-svn: 120921
2010-12-04 22:47:22 +00:00
Rafael Espindola 99e026dbca Remember the contents of leb and dwarfline fragments when relaxing. This avoids
having to evaluate the expression again when writing.

llvm-svn: 120920
2010-12-04 21:58:52 +00:00
Rafael Espindola 1c8ac8f027 There are two reasons why we might want to use
foo = a - b
.long foo
instead of just
.long a - b

First, on darwin9 64 bits the assembler produces the wrong result. Second,
if "a" is the end of the section all darwin assemblers (9, 10 and mc) will not
consider a - b to be a constant but will if the dummy foo is created.

Split how we handle these cases. The first one is something MC should take care
of. The second one has to be handled by the caller.

llvm-svn: 120889
2010-12-04 03:21:47 +00:00
Rafael Espindola 1048e75fb9 Next step: Only pad debug_line when the target is darwin. Add a FIXME to avoid
doing that if the target is darwin10 or newer.

This fixes
*) Direct object emission was producing objects without the workaround on
   darwin9.
*) Assembly printing was producing objects with the workaround on linux.

llvm-svn: 120866
2010-12-04 00:31:13 +00:00
Rafael Espindola f8af778e1f First step in fixing MC. Make it clear that we are avoiding a bug in the
darwin9 linker, what is needed to avoid it and where to get more information.

Also make the workaround simpler. Just the regular end_sequence we normally
create is more than 4 bytes.

Tested by building cctools and ld64 from darwin9 on a darwin10 system and using
those. I checked that I was able to reproduce the bootstrap failure when
the the workaround was disabled.

llvm-svn: 120854
2010-12-03 23:36:59 +00:00
Rafael Espindola 4c70eeaf33 Make EmitIntValue more efficient and more like what we do for leb128. The
difference is much smaller (about 0.3s) but significant.

llvm-svn: 120787
2010-12-03 02:54:21 +00:00
Rafael Espindola 675fbb2ad1 Do with uleb the same trick we now do with dwarf line/address advances. This
avoids creating leb128 fragments and speeds up the test in PR8711 to 33s.

llvm-svn: 120774
2010-12-03 01:19:49 +00:00
Rafael Espindola 57ab708bdd Try to resolve symbol differences early, and if successful create a plain
data fragment. This reduces the time to assemble the test in 8711 from 60s to
54s.

llvm-svn: 120767
2010-12-03 00:55:40 +00:00
Devang Patel 5eed2e63f8 It may not be an option to skip .debug_line if there are file reference in already emitted debug info. So, for now, emit dummy line table entry to make older linker and assemblers happy. This is not a new behavior, original AsmPrinter emitted similar line table entries.
llvm-svn: 120760
2010-12-03 00:10:48 +00:00
Devang Patel 8cabd938ed Use set directive for StartMinusEndExpr.
This is a fix for llvm-gcc-i386-darwin9 buildbot failure.

llvm-svn: 120742
2010-12-02 21:32:30 +00:00
Rafael Espindola bf792065a9 Add a fast path to EvaluateSymbolicAdd. This avoids computing symbol addresses
which then avoids running EnsureValid.
This cuts the assembly time of the testcase in PR8711 from 2:50 minutes to 1
minute.

llvm-svn: 120697
2010-12-02 07:53:12 +00:00
Rafael Espindola 9065bfc692 Move EmitValueToOffset to the ObjectStreamer.
llvm-svn: 120691
2010-12-02 05:59:38 +00:00
Rafael Espindola 3fa6fc1450 Add EmitInstToFragment to the generic object streamer.
llvm-svn: 120690
2010-12-02 05:44:06 +00:00
Rafael Espindola 60ebca9aaf The sections that the ELF object writer has to create are very simple and
contain only data. Handle them specially instead of using AddSectionToTheEnd.
This moves a hack from the generic assembler to the elf writer. It is also
a bit faster and should make other improvements easier.

llvm-svn: 120683
2010-12-02 03:09:06 +00:00
Devang Patel 87b9114f49 If tehre are not any line entry then do not try to emit .debug_line section.
llvm-svn: 120637
2010-12-02 01:17:51 +00:00
Jim Grosbach ce2bd8d05f Add support for binary encoding of ARM 'adr' instructions referencing constant
pool entries (LEApcrel pseudo). Ongoing saga of rdar://8542291.

llvm-svn: 120635
2010-12-02 00:28:45 +00:00
Rafael Espindola 50fe5c5138 Remove unused argument.
llvm-svn: 120621
2010-12-01 22:48:11 +00:00
Rafael Espindola 5fe5f45352 Rename temporary symbols if they conflict with artificial symbols created
by the assembler. This was blocking parsing any large .s produced by clang for
example.

Fixes PR8596.

llvm-svn: 120603
2010-12-01 20:46:11 +00:00
Owen Anderson 943fb60b1f Add correct encodings for STRD and LDRD, including fixup support. Additionally, update these to unified syntax.
llvm-svn: 120589
2010-12-01 19:18:46 +00:00
Jim Grosbach 5695098c4c Fix a mised reloc rename spot.
llvm-svn: 120585
2010-12-01 19:02:26 +00:00
Jason W Kim 29805961d8 ARM/MC/ELF relocation "hello world" for movw/movt.
Lifted adjustFixupValue() from Darwin for sharing w ELF.
Test added
TODO:
  refactor ELFObjectWriter::RecordRelocation more.
  Possibly share more code with Darwin?
  Lots more relocations...

llvm-svn: 120534
2010-12-01 02:40:06 +00:00
Michael J. Spencer 447762da85 Merge System into Support.
llvm-svn: 120298
2010-11-29 18:16:10 +00:00
Rafael Espindola e5e1f9ad0f Make EmitIntValue non virtual.
llvm-svn: 120271
2010-11-28 23:22:44 +00:00
Rafael Espindola 0710e3771f Forgot the MCPureStreamer::EmitValue in the previous commit.
llvm-svn: 120270
2010-11-28 23:13:47 +00:00
Rafael Espindola a084fd6e9d Move EmitValue to MCObjectStreamer.
llvm-svn: 120269
2010-11-28 23:08:47 +00:00
Rafael Espindola e5b7415b21 Fixed verson of r120245.
Factor some duplicated code into MCObjectStreamer::EmitLabel.

llvm-svn: 120248
2010-11-28 17:18:55 +00:00
Rafael Espindola 1679580cc9 Revert previous patch while I debug the darwin bootstrap failure.
llvm-svn: 120246
2010-11-28 16:22:59 +00:00
Rafael Espindola d4b3feb3f7 Factor some duplicated code into MCObjectStreamer::EmitLabel.
llvm-svn: 120245
2010-11-28 15:54:36 +00:00
Rafael Espindola b746531c2c Avoid code duplication in the many unsupported EmitGPRel32Value implementations.
llvm-svn: 120243
2010-11-28 15:09:24 +00:00
Rafael Espindola 8a3a7923eb Define generic 1, 2 and 4 byte pc relative relocations. They are common
and at least the 4 byte one will be needed to implement the .cfi_* directives.

llvm-svn: 120240
2010-11-28 14:17:56 +00:00
Daniel Dunbar 0ac77d526d macho-dump: Add support for dumping relocation entries.
llvm-svn: 120216
2010-11-27 13:39:48 +00:00
Daniel Dunbar 768a5e8004 Fix a comment.
llvm-svn: 120199
2010-11-27 07:39:37 +00:00
Daniel Dunbar 4b128a5d4f Reduce nesting.
llvm-svn: 120189
2010-11-27 05:18:48 +00:00
Daniel Dunbar eab6e401fe MC/Mach-O: Migrate more constants into MachOFormat.h.
llvm-svn: 120188
2010-11-27 04:59:14 +00:00
Daniel Dunbar 2263ca4834 MC/Mach-O: Introduce Object/MachOFormat for describing purely platform / machine
independent information on the Mach object format, and move some stuff from
MachObjectWriter.cpp there.

llvm-svn: 120186
2010-11-27 04:19:38 +00:00
Rafael Espindola bf4a4e4ad9 Remove the unused TheTarget member.
llvm-svn: 120168
2010-11-26 04:24:21 +00:00
Michael J. Spencer f13f442b1a Fix Whitespace.
llvm-svn: 120166
2010-11-26 04:16:08 +00:00
Rafael Espindola f8e127eaf6 Factor some code to parseSectionFlags and fix the default type of a section.
llvm-svn: 120145
2010-11-25 15:32:56 +00:00
Rafael Espindola 9f75d5df0b Behave a bit more like gnu as and use the symbol (instead of the section)
for any relocation to a symbol defined in a tls section.

llvm-svn: 120121
2010-11-24 21:57:39 +00:00
Rafael Espindola 708ac4d6ad Relocate with the symbol if the relocation is of kind NTPOFF.
Patch by David Meyer, I added the test.

llvm-svn: 120104
2010-11-24 19:23:50 +00:00
Rafael Espindola e98d483b71 Fix and add tests for all cases in x86 and x86_64 where gnu as implicitly
sets the type of a symbol to STT_TLS.

llvm-svn: 120100
2010-11-24 18:51:21 +00:00
Rafael Espindola 4e70ac7b68 If a symbol is used as tls, mark it as tls even if not declare as so. Probably
fixes PR8659.

llvm-svn: 120076
2010-11-24 02:19:40 +00:00
Rafael Espindola 5c1d4e3b1e Invalidate the layout on any relaxation, not just Instructions. Bug found by David Meyer.
While here, remove unused argument and rename UpdateForSlide to Invalidate.

llvm-svn: 120009
2010-11-23 08:08:33 +00:00
Rafael Espindola 6e13aa1d3b Reuse data fragments while lowering. Patch by David Meyer.
llvm-svn: 119999
2010-11-23 05:49:35 +00:00
Jason W Kim 767a1e9adc Fixed some style issues (no _, no spc after !)
llvm-svn: 119986
2010-11-22 22:05:16 +00:00
Jason W Kim 16b75262c4 Make the <ARCH>ELFObjectWriter statics private
llvm-svn: 119982
2010-11-22 18:57:00 +00:00
Jason W Kim 84ffdd5cf1 Fix misplaced statics.
llvm-svn: 119981
2010-11-22 18:47:05 +00:00
Jason W Kim a262546df7 Kill trailing whitespace
llvm-svn: 119979
2010-11-22 18:42:07 +00:00
Jason W Kim 7c7d0ef287 Refactor the ELFRelocationEntry (pull up) and move the arch-specific statics to inside the class where it belongs.
Next step is to rationally break apart the RecordRelocation()

Probably the step will be to have 1 member function for ech slot of the ELFRelocationEntry()

llvm-svn: 119978
2010-11-22 18:41:13 +00:00
Rafael Espindola 3c227b0b89 Add basic CFI methods to the streamer interface.
llvm-svn: 119972
2010-11-22 14:27:24 +00:00
Rafael Espindola 556f203d64 Remove some #includes.
llvm-svn: 119967
2010-11-22 11:53:17 +00:00
Wesley Peck 7699d6cfe9 Implement ELF object file writing support for the MBlaze backend. Its not perfect yet, but it works for many tests.
llvm-svn: 119952
2010-11-21 22:06:28 +00:00
Rafael Espindola 26cb15a549 Handle PCRel relocations with absolute values. Fixes PR8656.
llvm-svn: 119917
2010-11-21 00:48:25 +00:00
Kevin Enderby 8be14414f6 Added support for the Mach-O .symbol_resolver directive. rdar://8673046
llvm-svn: 119816
2010-11-19 18:39:33 +00:00
Rafael Espindola 9900b4802e Add a MCLineSectionOrder vector so that we produce the line tables in a
deterministic order.

llvm-svn: 119795
2010-11-19 07:41:23 +00:00
Rafael Espindola 0b4c9aa9a9 Add an assert.
llvm-svn: 119788
2010-11-19 04:55:36 +00:00
Rafael Espindola 92ca933f6e Fix llvm-gcc boostrap on OS X by avoiding printing sleb and uleb when
possible.

llvm-svn: 119785
2010-11-19 04:10:13 +00:00
Rafael Espindola b58867ccba Change some methods in MCDwarf.cpp to be able to handle an arbitrary
MCStreamer instead of just MCObjectStreamer. Address changes cannot
be as efficient as we have to use DW_LNE_set_addres, but at least
most of the logic is shared.

This will be used so that, with CodeGen still using EmitDwarfLocDirective,
llvm-gcc is able to produce debug_line sections without needing an
assembler that supports .loc.

llvm-svn: 119777
2010-11-19 02:26:16 +00:00
Rafael Espindola 67c6ab8865 Change CodeGen to use .loc directives. This produces a lot more readable output
and testing is easier.  A good example is the unknown-location.ll test that
now can just look for ".loc 1 0 0".  We also don't use a DW_LNE_set_address for
every address change anymore.

llvm-svn: 119613
2010-11-18 02:04:25 +00:00
Rafael Espindola 7a2cd8b540 make isVirtualSection a virtual method on MCSection. Chris' suggestion.
llvm-svn: 119547
2010-11-17 20:03:54 +00:00
Jim Grosbach d82684c7fc Fix typo.
llvm-svn: 119542
2010-11-17 19:30:11 +00:00
Rafael Espindola b67912d5cd Add support for .int.
llvm-svn: 119512
2010-11-17 16:24:40 +00:00
Rafael Espindola 5c996894bd Add support for .2byte, .4byte and .8byte.
Fixes PR8631.

llvm-svn: 119511
2010-11-17 16:15:42 +00:00
Daniel Dunbar 95d37be1a9 MC-JIT: Stub out "pure" streamer.
- No immediate use, but maybe someone feels like hacking on it.

llvm-svn: 119510
2010-11-17 16:06:47 +00:00
Rafael Espindola c653a895c8 Add .loc methods to the streamer.
Next: Add support for the !HasDotLocAndDotFile case to the MCAsmStreamer
and then switch codegen to use it.

llvm-svn: 119384
2010-11-16 21:20:32 +00:00
Rafael Espindola 3bbea57a6e Parse and ignore some .cfi_* directives.
llvm-svn: 119362
2010-11-16 18:34:07 +00:00
Rafael Espindola 7d19efd6ff A bit more of gnu as compatibility when handling relocations with aliases.
llvm-svn: 119328
2010-11-16 04:11:46 +00:00
Benjamin Kramer 202d91e433 Fix compiler warnigns.
llvm-svn: 119175
2010-11-15 19:20:50 +00:00
Rafael Espindola 8c3039b67b Change MCExpr::EvaluateAsRelocatableImpl of variables to return the original
variable if recursing fails to simplify it.

Factor AliasedSymbol to be a method of MCSymbol.

Update MCAssembler::EvaluateFixup to match the change in
EvaluateAsRelocatableImpl.

Remove the WeakRefExpr hack, as the object writer now sees the weakref with
no extra effort needed.

Nothing else is using MCTargetExpr, but keep it for now.

Now that the ELF writer sees relocations with aliases, handle

    .weak    foo2
foo2:
    .weak    bar2
    .set    bar2,foo2
    .quad    bar2

the same way gas does and produce a relocation with bar2.

llvm-svn: 119152
2010-11-15 16:33:49 +00:00
Jason W Kim 96f4c01cb3 Dovetail with Dan Dunbar's rework of ELFObjectWriter.
Added 2 new subclasses - X86ELFObjectWriter and ARMELFObectWriter.
ARM and X86 require different code for RecordRelocation(), possibly others.

llvm-svn: 119149
2010-11-15 16:18:39 +00:00
Rafael Espindola 46c79ef113 Fix PR8565.
This moves most of the isUsed logic to the MCSymbol itself. With this we
get a bit more relaxed about allowing definitions after uses: uses that
don't evaluate their argument immediately (jmp foo) are accepted.

ddunbar, this was the smallest compromise I could think of that lets us
accept gcc (and clang!) assembly.

llvm-svn: 119144
2010-11-15 14:40:36 +00:00
Chris Lattner 9e7d8c0313 correct the fixup comment printer to work on big endian platforms.
llvm-svn: 119122
2010-11-15 05:56:19 +00:00
Chris Lattner edb9d84dcc add targetoperand flags for jump tables, constant pool and block address
nodes to indicate when ha16/lo16 modifiers should be used.  This lets
us pass PowerPC/indirectbr.ll.

The one annoying thing about this patch is that the MCSymbolExpr isn't
expressive enough to represent ha16(label1-label2) which we need on
PowerPC.  I have a terrible hack in the meantime, but this will have
to be revisited at some point.

Last major conversion item left is global variable references.

llvm-svn: 119105
2010-11-15 02:46:57 +00:00
Rafael Espindola 240028d11d Move the logic to decide with which symbol we produce a relocation (if any) to
a central location. This also makes us a bit more compatible with gas.

llvm-svn: 119094
2010-11-14 23:53:26 +00:00
Chris Lattner 94f0c14cb0 reimplement ppc asmprinter "toc" handling to use a VariantKind
on the operand, required for .o file writing and fixing 
the PowerPC/mult-alt-generic-powerpc64.ll failure with the new
instprinter.

llvm-svn: 119087
2010-11-14 22:22:59 +00:00
Rafael Espindola a7d0bed336 Fix another case of a .comm directive without a corresponding .type
directive.

llvm-svn: 119073
2010-11-14 21:11:16 +00:00
Rafael Espindola b05ef7377a Fix the type of a symbol created with .comm and no corresponding .type.
llvm-svn: 119060
2010-11-14 19:40:55 +00:00
Rafael Espindola 7d0ba3464e Handle a peculiar comdat case: Creating a section with an undefined
signature symbol causes a local symbol to be created unless there is
some other use of the symbol.

llvm-svn: 119026
2010-11-14 04:17:37 +00:00
Rafael Espindola 0e3decfcf7 Simplify getSymbolIndexInSymbolTable by setting the actual index of
the symbols.

llvm-svn: 119022
2010-11-14 03:12:24 +00:00
Rafael Espindola eba9022652 Fix warning.
llvm-svn: 119021
2010-11-14 01:34:31 +00:00
Daniel Dunbar fe0c28f4db MC: Simplify Mach-O and ELF object writer implementations.
- What was I thinking?????

llvm-svn: 118992
2010-11-13 07:33:40 +00:00
Rafael Espindola 2d006b1ade Fix warning and add support for printing gnu_unique_object.
llvm-svn: 118981
2010-11-13 04:55:06 +00:00
Rafael Espindola 4bcf94c75a Parse and record the gnu_unique_object type.
llvm-svn: 118980
2010-11-13 04:51:02 +00:00
Rafael Espindola f01b622902 Parse and remember discriminators in .loc line. I try to output them with
another patch.
This lets us parse a bit more of the gcc 4.5 output.

llvm-svn: 118975
2010-11-13 03:18:27 +00:00
Rafael Espindola 1d37f35eea Fix the encoding of negative line deltas.
llvm-svn: 118962
2010-11-13 01:06:27 +00:00
Benjamin Kramer dcc7732f88 MCELF: Copy the symbol name only if we're going to modify it.
llvm-svn: 118920
2010-11-12 19:26:04 +00:00
Rafael Espindola c4f4b2e878 Remove what looks like dead code in the production of debug lines.
We only produce debug line information if we have seen a line directive, so
this code is dead. Also, if we want to be bug by bug compatible with
gas and sometimes produce "empty" .debug_line sections, this will
match the content produced by gas.

llvm-svn: 118914
2010-11-12 18:41:26 +00:00
Rafael Espindola de990b270d gnu as support both % and @ before types, do the same.
llvm-svn: 118893
2010-11-12 15:47:08 +00:00
Jim Grosbach ba321cb120 Trailing whitespace.
llvm-svn: 118831
2010-11-11 20:16:23 +00:00
Rafael Espindola 84d031870c Mark labels declared in tls sections as STT_TLS. This matches the behavior of
gas.

llvm-svn: 118818
2010-11-11 19:04:55 +00:00
Rafael Espindola a3e9a2298d Initial comdat implementation.
llvm-svn: 118805
2010-11-11 18:13:52 +00:00
Rafael Espindola fb6540c112 Make AliasedSymbol able to handle MCTargetExpr. They can get here if
a weakref is used with a VariantKind.

llvm-svn: 118798
2010-11-11 17:24:43 +00:00
Rafael Espindola fa7b55754c Fix the symbol index of weak references. Also make RecordRelocation a bit
easier to read by having const references to the symbol, aliased symbol and
renamed symbol.

llvm-svn: 118793
2010-11-11 16:48:11 +00:00
Rafael Espindola 19fa38000a Remove some explicit arguments to getELFSection. This is
a leftover from the removal of isExplicit.

llvm-svn: 118774
2010-11-11 03:40:25 +00:00
Rafael Espindola 5a8d781caa Factor some code into WriteSection.
llvm-svn: 118733
2010-11-10 23:36:59 +00:00
Rafael Espindola eb97f59753 Update the section index map after we add the medatada sections.
llvm-svn: 118728
2010-11-10 22:34:07 +00:00
Rafael Espindola 1801410fa8 Use SectionIndexMap in WriteSymbolTable to make it a little less brittle.
llvm-svn: 118725
2010-11-10 22:16:43 +00:00
Rafael Espindola d634003ebd Factor some code into ComputeIndexMap.
llvm-svn: 118722
2010-11-10 21:51:05 +00:00
Rafael Espindola 51d68339a2 Change the String<size> methods to take a fragment instead of a buffer.
llvm-svn: 118709
2010-11-10 20:02:59 +00:00
Rafael Espindola 36ef57d2eb Use MCSectionELF in places we know we have an ELF section.
llvm-svn: 118699
2010-11-10 19:05:07 +00:00
Jim Grosbach f23b2d9d8d Update ARMConstantPoolValue to not use a modifier string. Use an explicit
VariantKind marker to indicate the additional information necessary. Update
MC to handle the new Kinds. rdar://8647623

llvm-svn: 118671
2010-11-10 03:26:07 +00:00
Rafael Espindola 9bb44a5ce8 Fixed version of 118639 with an extra assert to catch similar problems
earlier. Implicit bool -> int conversions are evil!

llvm-svn: 118651
2010-11-09 23:42:07 +00:00
Rafael Espindola 33048f069f Revert previous patch. Missed a case.
llvm-svn: 118645
2010-11-09 22:54:38 +00:00
Rafael Espindola 4bdd2724e3 Remove IsExplicit. It was always false.
llvm-svn: 118639
2010-11-09 22:37:44 +00:00
Daniel Dunbar 8a3c3f2ad3 Fix typo.
llvm-svn: 118421
2010-11-08 17:53:02 +00:00
Rafael Espindola 9d17a3194e Set default flags for .rodata.
llvm-svn: 118395
2010-11-08 02:47:59 +00:00
Rafael Espindola 20b11eaa01 Speed up AddSectionToTheEnd. It was walking all fragments in all sections.
This is really slow with we have 1000s of sections each with a corresponding
relocation section. Also, it is only used by the ELF writer to add
basic data, so there is no need to force a new layout pass.

Should fix PR8563.

llvm-svn: 118377
2010-11-07 15:03:27 +00:00
Rafael Espindola 5665a93bc5 Relax dwarf line fragments. This fixes a crash in the included testcase.
llvm-svn: 118365
2010-11-07 02:07:12 +00:00
Jim Grosbach cbdf7efe1c Add '.code 32' assembler directive to MC streamers.
llvm-svn: 118309
2010-11-05 22:40:09 +00:00
Jim Grosbach 5a2c68d308 MC'ize the '.code 16' and '.thumb_func' ARM directives.
llvm-svn: 118301
2010-11-05 22:08:08 +00:00
Benjamin Kramer 80bb80f5fc Put class into an anonymous namespace.
llvm-svn: 118294
2010-11-05 19:56:38 +00:00
Jim Grosbach 46c2acbcb4 Allow targets to specify the MachO CPUType/CPUSubtype information.
llvm-svn: 118288
2010-11-05 18:48:58 +00:00
Jim Grosbach c75bb744e1 syntaxunified directive is a no-op for MachO writing.
llvm-svn: 118287
2010-11-05 18:47:32 +00:00
Rafael Espindola 38d0756b88 Add 118023 back, but with proper spelling for .uleb128/.sleb128.
llvm-svn: 118254
2010-11-04 18:17:08 +00:00
Rafael Espindola f8343f87e7 Do relaxations with FT_Org fragments. Fixes the FIXME:
// FIXME: We should compute this sooner, we don't want to recurse here, and
    // we would like to be more functional.

In MCAssembler::ComputeFragmentSize.

llvm-svn: 118080
2010-11-02 21:38:23 +00:00
Rafael Espindola 5e874982f2 Add support for expressions in .sleb/.uleb directives.
llvm-svn: 118023
2010-11-02 17:22:24 +00:00
Rafael Espindola 13ddd6d410 Write the line info to .debug_line.
llvm-svn: 117930
2010-11-01 17:07:14 +00:00
Rafael Espindola 72b5488680 Move EmitInstruction to MCObjectStreamer so that ELF and MachO can share it.
llvm-svn: 117925
2010-11-01 16:27:31 +00:00
Rafael Espindola 144fb8af58 Add support for .value.
llvm-svn: 117922
2010-11-01 15:29:07 +00:00
Rafael Espindola 1614597873 Implement .weakref.
llvm-svn: 117911
2010-11-01 14:28:48 +00:00
Rafael Espindola 3fe87a1eed Add support for files with more than 65280 sections. No testcase since
it would be a bit too big :-)

llvm-svn: 117849
2010-10-31 00:16:26 +00:00
Rafael Espindola 45834a0065 Be more strict on when we produce an undefined reference. In gas a file with
just

.type   foo,@object

will produce an undefined reference to foo. On the other hand, a file with
just

.weakref bar, foo

will not. It is somewhat hard to support both in MC since both statements
should create the symbols. It should be possible if we really need to by
adding to the flags, but hopefully that is not necessary.

With this patch we do not produce a undefined reference in any of those cases.
The assembly file needs an actual use for the undefined reference to be
present.

This is in preparation for a patch implementing .weakref.

llvm-svn: 117735
2010-10-29 23:09:31 +00:00
Rafael Espindola 8aefb66376 Improvements to .section parsing:
* If we have a M or a G, reject sections without the type
* Only parse the flag specific arguments if we have M or G
* Parse the corresponding arguments for M and G

We ignore the G arguments and flag for now.

llvm-svn: 117608
2010-10-28 21:33:33 +00:00
Rafael Espindola 63760ba38e Add support for the .string directive.
llvm-svn: 117592
2010-10-28 20:02:27 +00:00
Rafael Espindola 3c5a54e4b9 Defined weak symbols should have non-zero value.
llvm-svn: 117585
2010-10-28 19:39:57 +00:00
Rafael Espindola 29f70afbae Fix relocations with renamed symbols.
llvm-svn: 117575
2010-10-28 19:08:03 +00:00
Rafael Espindola 6cd76e63f8 Aliases defined with .symver should copy the binding of the symbols they alias.
Move the existing patching for undefined symbols so that all the patching
is done in the same function.

llvm-svn: 117570
2010-10-28 18:33:03 +00:00
Roman Divacky 41e6cebb40 Use the IDVal directly as there's no need to convert to std::string.
Pointed out by Chris!

llvm-svn: 117557
2010-10-28 16:57:58 +00:00
Roman Divacky fdac6365ab Implement .equ directive as a synonym to .set.
llvm-svn: 117553
2010-10-28 16:22:58 +00:00
Rafael Espindola 936ba3af28 Implement R_X86_64_DTPOFF32.
llvm-svn: 117548
2010-10-28 15:11:03 +00:00
Rafael Espindola 2dbec3f762 Implement TLSLD.
llvm-svn: 117547
2010-10-28 15:02:40 +00:00
Rafael Espindola e8f08be11c Implement DTPOFF.
llvm-svn: 117546
2010-10-28 14:48:59 +00:00
Rafael Espindola 6f23eb380d Implement TLSLDM.
llvm-svn: 117544
2010-10-28 14:37:09 +00:00
Rafael Espindola b3b49bbc39 Implement VK_GOTNTPOFF and switch RelocNeedsGOT to use VariantKind.
llvm-svn: 117543
2010-10-28 14:22:44 +00:00
Rafael Espindola f8537165bd Add support for R_386_TLS_GD, R_386_TLS_LE_32, R_386_TLS_IE and R_386_TLS_LE.
llvm-svn: 117494
2010-10-27 21:23:52 +00:00
Rafael Espindola 24c8b04d5f Implement R_X86_64_GOTTPOFF, R_X86_64_TLSGD and R_X86_64_TPOFF32.
llvm-svn: 117481
2010-10-27 20:28:07 +00:00
Benjamin Kramer 14807270be Replace pointer arithmetic with StringRef::substr.
llvm-svn: 117477
2010-10-27 19:53:52 +00:00
Rafael Espindola 095fa9e5cc Set default type and flags for .init and .fini.
llvm-svn: 117471
2010-10-27 18:45:20 +00:00
Rafael Espindola 26496e6835 Produce an error for an invalid use of .symver.
llvm-svn: 117462
2010-10-27 17:56:18 +00:00
Rafael Espindola cc1b168ef6 Symbols defined as the difference of other two end up in the ABS section.
llvm-svn: 117451
2010-10-27 16:04:30 +00:00
Rafael Espindola eb0c2c170d Add support for the .symver directive. This is really ugly, but most of it is
contained in the ELF object writer.

llvm-svn: 117448
2010-10-27 15:18:17 +00:00
Rafael Espindola a5efd6a27c Move more logic to isInSymtab and simplify.
llvm-svn: 117447
2010-10-27 14:44:52 +00:00
Rafael Espindola c9fb35e73b Add support for .ident.
llvm-svn: 117389
2010-10-26 19:35:47 +00:00
Daniel Dunbar b3a48f3459 MC/AsmParser: Fix relative precedence of {+,-} and comparison ops.
llvm-svn: 117299
2010-10-25 20:18:56 +00:00
Daniel Dunbar 7484d2cbec MC/AsmLexer: Fix bug in source location for Slash token.
llvm-svn: 117298
2010-10-25 20:18:53 +00:00
Rafael Espindola 0ed1543d4e Add support for emitting ARM file attributes.
llvm-svn: 117275
2010-10-25 17:50:35 +00:00
Rafael Espindola 800fd3533c Add X86::reloc_global_offset_table and use it to have a single place where
we check for _GLOBAL_OFFSET_TABLE_.

llvm-svn: 117241
2010-10-24 17:35:42 +00:00
Benjamin Kramer 9192e7ab12 Make some symbols static, move classes into anonymous namespaces.
llvm-svn: 117111
2010-10-22 17:35:07 +00:00
Wesley Peck 1851090515 Making the e_machine configurable by the target backend in ELFObjectWriter.
llvm-svn: 117099
2010-10-22 15:52:49 +00:00
Jim Grosbach 90600d3329 Trailing whitespace.
llvm-svn: 117073
2010-10-21 22:04:05 +00:00
Michael J. Spencer 31041a9967 Fix Warnings.
llvm-svn: 117062
2010-10-21 20:49:38 +00:00
Rafael Espindola 8ba86f801d Do not recurse into symbol refs that have a variant kind. This prevents us
from losing the variant when producing a relocation on an alias.

llvm-svn: 117037
2010-10-21 18:00:20 +00:00
Chandler Carruth 1898262a33 Remove remaining uses of ATTRIBUTE_UNUSED on variables, and delete three
#includes in the process.

llvm-svn: 116919
2010-10-20 08:27:02 +00:00
Rafael Espindola ee8d15157a Small cleanups and fixes in preparation for fixing _GLOBAL_OFFSET_TABLE_.
llvm-svn: 116848
2010-10-19 19:31:37 +00:00
Bill Wendling 5391eb61fb Fix spelling.
llvm-svn: 116804
2010-10-19 10:18:23 +00:00
Chandler Carruth a960cb7181 Move the definition of this to the source file to anchor the vtable.
llvm-svn: 116779
2010-10-19 00:37:30 +00:00
Rafael Espindola fba9f74932 Implement R_386_GOT32.
llvm-svn: 116744
2010-10-18 20:47:21 +00:00
Rafael Espindola 0a5314fdb3 Relocate with .bss instead of using the symbol. Matches gas behavior.
llvm-svn: 116741
2010-10-18 20:25:33 +00:00
Rafael Espindola 3604d4441a Reenable assert.
llvm-svn: 116738
2010-10-18 19:33:01 +00:00
Rafael Espindola e3dc9e2ea1 Produce ELF::R_386_GOTPC relocations.
llvm-svn: 116728
2010-10-18 18:36:12 +00:00
Rafael Espindola 257374bb0f Make the bots happy.
llvm-svn: 116719
2010-10-18 18:03:28 +00:00
Rafael Espindola 3521f8467d Produce a R_386_PLT32 when needed. Moved the default cases of switches to the
start for consistency.

llvm-svn: 116715
2010-10-18 16:58:03 +00:00
Rafael Espindola 4464e0858f Handle GOTOFF correctly on i386.
llvm-svn: 116711
2010-10-18 16:38:04 +00:00
Benjamin Kramer 77414757f6 Fix a typo and silence unused variable warnings in -Asserts build.
llvm-svn: 116685
2010-10-17 07:38:40 +00:00
Rafael Espindola 4262a22225 Add a MCObjectFormat class so that code common to all targets that use a
single object format can be shared.

This also adds support for

mov zed+(bar-foo), %eax

on ELF and COFF targets.

llvm-svn: 116675
2010-10-16 18:23:53 +00:00
Michael J. Spencer 17990d5690 MC-COFF: Add support for default-null weak externals.
llvm-svn: 116666
2010-10-16 08:25:57 +00:00
Daniel Dunbar 4d99878a37 MC/AsmParser: Report .stabs directive as unsupported.
llvm-svn: 116659
2010-10-16 04:56:42 +00:00
Rafael Espindola 84378f0f53 Refactor alias handling to AliasedSymbol.
llvm-svn: 116600
2010-10-15 18:25:33 +00:00
Rafael Espindola fbcf0db7ee Refactor code a bit and avoid creating unnecessary entries in the string
map.

llvm-svn: 116579
2010-10-15 15:39:06 +00:00
Rafael Espindola bee6e9f8e0 Remove some code duplication.
llvm-svn: 116484
2010-10-14 16:34:44 +00:00
Michael J. Spencer a6a984bd96 MC-COFF: Fix .bss section size. Fixes PR8335. Patch by NAKAMUTA Takumi!
llvm-svn: 116155
2010-10-09 16:04:45 +00:00
Michael J. Spencer 86bbd71088 MC-COFF: Implement InitSections. Fixes PR8335.
llvm-svn: 116151
2010-10-09 15:44:27 +00:00
Michael J. Spencer c8dbdfd4ba MC-COFF: Add COFFAsmParser. Completes PR8343.
llvm-svn: 116150
2010-10-09 11:01:07 +00:00
Michael J. Spencer 530ce85b3e Fix Whitespace.
llvm-svn: 116149
2010-10-09 11:00:50 +00:00
Michael J. Spencer be52c62a6d MC-COFF: Assert on non-coff sections.
llvm-svn: 116148
2010-10-09 11:00:37 +00:00
Michael J. Spencer 3d89823102 MC: Move ParseDirectiveELFType into ELFAsmParser. COFF uses .type for something else.
llvm-svn: 116142
2010-10-09 03:47:55 +00:00
Michael J. Spencer aaf4643a31 MC-COFF: Handle relaxation in COFF better. Fixes PR8321.
llvm-svn: 116013
2010-10-07 23:55:40 +00:00
NAKAMURA Takumi 87002b592e Minor cosmetic change: fix DOSish \r\n.
llvm-svn: 115910
2010-10-07 07:21:04 +00:00
Michael J. Spencer 1666b61357 MC-COFF: Fix symbol aliases. Fixes PR8251.
llvm-svn: 115909
2010-10-07 06:29:33 +00:00
Rafael Espindola 883936ce0b Another case of 256 sections not being enough :-)
llvm-svn: 115858
2010-10-06 22:28:19 +00:00
Rafael Espindola 5f2d6a5cd9 Get binding and visibility info from the the alias, but Type from the symbol
being aliased.

llvm-svn: 115836
2010-10-06 21:02:29 +00:00
Michael J. Spencer e535b01a74 MC: Add missing forward in MCLoggingStreamer.
llvm-svn: 115830
2010-10-06 20:36:47 +00:00
Rafael Espindola d444577382 If a symbol is global, reloc against it even if it is in a mergeable section.
llvm-svn: 115817
2010-10-06 19:27:21 +00:00
Rafael Espindola 83b2a3337f Make sure weak symbols are listed after the local ones.
llvm-svn: 115795
2010-10-06 16:47:31 +00:00
Rafael Espindola 8f3d2c9058 Correctly handle GOTPCREL relocations.
llvm-svn: 115793
2010-10-06 16:23:36 +00:00
Rafael Espindola d7565c3a06 Use a relocation against the symbol if it is a PLT and the symbol is in another
section. Common because of linkonce sections.

llvm-svn: 115718
2010-10-05 23:57:26 +00:00
Rafael Espindola 0ad137e98e Implement more alias cases.
llvm-svn: 115699
2010-10-05 22:26:43 +00:00
Rafael Espindola 3844da781f 256 sections should be enough for anyone...
llvm-svn: 115687
2010-10-05 21:20:07 +00:00
Rafael Espindola c58a37ea51 Don't crash in a strange .size directive.
llvm-svn: 115684
2010-10-05 21:02:45 +00:00
Michael J. Spencer a65d17a5ca Fix Punctuation.
llvm-svn: 115657
2010-10-05 19:48:12 +00:00
Michael J. Spencer a3b34ed2df MC-COFF: Fix (PR8278) temporary symbol relocations.
llvm-svn: 115656
2010-10-05 19:48:03 +00:00
Rafael Espindola b91bac6c96 Add support for a fill value in the .zero directive.
llvm-svn: 115655
2010-10-05 19:42:57 +00:00
Rafael Espindola b1d0789357 Implement a simple alias case and refactor the code a bit so that the
isInSymtab and isLocal logic in the two loops don't get easily out of sync.

llvm-svn: 115643
2010-10-05 18:01:23 +00:00
Rafael Espindola d03e81dba8 Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed.
llvm-svn: 115623
2010-10-05 15:48:37 +00:00
Rafael Espindola bce26a1ee0 On ELF we need to know which symbols are used in relocations to decide if
they should be in the symbol table or not. Instead of "guessing", just compute
the symbol table after the relocations are known.

llvm-svn: 115619
2010-10-05 15:11:03 +00:00
Kevin Enderby a68d004d88 Incorporate suggestions by Daniel Dunbar after his review. Thanks Daniel!
1) Changed ValidateDwarfFileNumber() to isValidDwarfFileNumber() to be better
   named.  Since it is just a predicate and isn't actually changing any state.

2) Added a missing return in the comments for setCurrentDwarfLoc() in 
   include/llvm/MC/MCContext.h for fix formatting.

3) Changed clearDwarfLocSeen() to ClearDwarfLocSeen() since it does change
   state.

4) Simplified the last test in isValidDwarfFileNumber() to just a one line
   boolean test of MCDwarfFiles[FileNumber] != 0 for the final return statement.

llvm-svn: 115551
2010-10-04 20:17:24 +00:00
Rafael Espindola fd1fff8b19 Implement ELF::R_X86_64_GOTPCREL.
llvm-svn: 115547
2010-10-04 19:51:39 +00:00
Rafael Espindola 308363336b Move isFixupKindX86PCRel.
llvm-svn: 115545
2010-10-04 19:46:28 +00:00
Rafael Espindola baadbd554a Produce a R_X86_64_PLT32 when needed.
llvm-svn: 115541
2010-10-04 19:04:13 +00:00
Rafael Espindola b2c4ca6433 Produce a R_X86_64_GOT32 when needed.
llvm-svn: 115537
2010-10-04 18:44:25 +00:00
Jan Wen Voung 87f77b5f9a Add hook in MCSection to decide when to use "optimized nops", for each
section kind. Previously, optimized nops were only used for MachO.
Also added tests for ELF and COFF.

llvm-svn: 115523
2010-10-04 17:32:41 +00:00
Rafael Espindola da0e3d07b2 Include the section address in the computation of the relocation.
llvm-svn: 115509
2010-10-04 15:59:01 +00:00
Rafael Espindola 7c48b06930 Correctly compute the relocation when it is not in the first fragment.
llvm-svn: 115506
2010-10-04 15:28:43 +00:00
Rafael Espindola f70b4e0c2e Implement a very basic PIC case.
llvm-svn: 115454
2010-10-03 00:46:57 +00:00
Kevin Enderby a8d176866d This adds a Darwin x86_64 relocation encoding for a subtraction expression
where both symbols are "local", that is non-external symbols, and there is
no "base" for the symbols used in the expression, that is the section has
no non-temporary symbols.  This case looks like this:

% cat local_reloc_A-B.s
	.long 0
LB:	.long 1
	.long LA - LB - 4
	.long 2
LA:	.long 3

which llvm-mc will not encode without this patch, generates a "unsupported
local relocations in difference" error, but the Darwin assembler will
encode with relocation entries like this:

% otool -rv a.out l.out 
a.out:
Relocation information (__TEXT,__text) 2 entries
address  pcrel length extern type    scattered symbolnum/value
00000008 False long   False  SUB     False     1 (__TEXT,__text)
00000008 False long   False  UNSIGND False     1 (__TEXT,__text)

which is very similar to what is encoded when the symbols don't have the
leading 'L' and they are not temporary symbols.  Which llvm-mc and the
Darwin assembler will encoded like this:

Relocation information (__TEXT,__text) 2 entries
address  pcrel length extern type    scattered symbolnum/value
00000008 False long   True   SUB     False     B
00000008 False long   True   UNSIGND False     A

This is the missing relocation encoding needed to allow the Mach-O x86
Dwarf file and line table to be emitted.  So this patch also removes the
TODO from the if() statement in MCMachOStreamer::Finish() that didn't 
call MCDwarfFileTable::Emit() for 64-bit targets.

llvm-svn: 115389
2010-10-02 00:13:41 +00:00
Rafael Espindola f987d5ea1c Factor some logic into ShouldRelocOnSymbol. This simplifies the code and
fixes some cases where we were producing relocations with at symbol that
should use a section instead.

llvm-svn: 115194
2010-09-30 20:18:35 +00:00
Kevin Enderby e46564a4a8 This is the last major patch to implement support for the .loc directive
and output the dwarf line number tables.  This contains the code to emit and
encode the dwarf line tables from the previously gathered information in the
MCLineSection objects.  This contains all the details to encode the line and
address deltas into the dwarf line table.

To do this an MCDwarfLineAddrFragment has been added.

Also this moves the interface code out of Mach-O streamer into
MCDwarf so it should be useable by other object file formats.

There is now one call to be made from an MCObjectStreamer
EmitInstruction() method:
   MCLineEntry::Make(this, getCurrentSection());
to create a line entry after each instruction is assembled.

And one call call to be made from an MCObjectStreamer Finish() method:
   MCDwarfFileTable::Emit(this, DwarfLineSection);
when getContext().hasDwarfFiles() is true and is passed a object file specific
MCSection where to emit the dwarf file and the line tables.

This appears to now be correct for 32-bit targets, at least x86.  But the
relocation entries for 64-bit Darwin needs some further work which is next
up to work on.  So for now the 64-bit Mach-O target does not output the
dwarf file and line tables.

llvm-svn: 115157
2010-09-30 16:52:03 +00:00
Kevin Enderby dce906c77f Changes EvaluateAsAbsolute() to return the "current value" of the expression
if we are given a Layout object, even in cases when the value is not fixed.
This will be needed by the final patch for the dwarf .loc support to size a
new MCDwarf fragment needed to build and emit dwarf line number tables.

llvm-svn: 115155
2010-09-30 16:42:21 +00:00
Chandler Carruth f44d350614 Silence a GCC warning about not handling all flags in this switch, we
specifically assert on unexpected flags.

llvm-svn: 115143
2010-09-30 10:59:51 +00:00
Jan Wen Voung efbdbe5565 Move logic of determining ELF entsize from the .s printer to initialization
time. That way, the EntrySize field is initialized for other code paths, 
namely, the .ll -> .o code path.

llvm-svn: 115141
2010-09-30 05:59:22 +00:00
Rafael Espindola 70d6e0e0ff Correctly produce R_X86_64_32 or R_X86_64_32S.
With this patch in

movq    $foo, foo(%rip)
foo:
.long   foo

We produce a R_X86_64_32S for the first relocation and R_X86_64_32 for the
second one.

llvm-svn: 115134
2010-09-30 03:11:42 +00:00
Jason W Kim 645f6c2bef Tiny patch for proof-of-concept cleanup of ARMAsmPrinter::EmitStartOfAsmFile()
Small test for sanity check of resulting ARM .s file.
Tested against -r115129.

llvm-svn: 115133
2010-09-30 02:45:56 +00:00
Jan Wen Voung b96b2d8e4d Have ELFAsmParser.cpp use the already parsed "Size" (entry size) when
constructing a section. Test for a few cases also included.

llvm-svn: 115132
2010-09-30 02:41:46 +00:00
Rafael Espindola 2ebaee9c75 Make it possible for the MCObjectWriter to decide if a given fixup is fully
resolved or not. Different object files have different restrictions and
different native assemblers have different idiosyncrasies we want to emulate
for now.

Move the existing MachO logic to the new place and implement an ELF one that
gets fixups to globals right.

llvm-svn: 115131
2010-09-30 02:22:20 +00:00
Jan Wen Voung c768287968 Test commit - Deleted some whitespace at the end of a line.
llvm-svn: 115122
2010-09-30 01:09:20 +00:00
Rafael Espindola 53f0bf194a Move "local commons" to the end of .bss to match the gnu as behavior.
llvm-svn: 115037
2010-09-29 14:52:01 +00:00
Michael J. Spencer 86a6222469 MC-COFF: Fix symbol storage class for globals
llvm-svn: 115020
2010-09-29 03:13:41 +00:00
Chris Lattner b44fd24fc1 change the protocol TargetAsmPArser::MatchInstruction method to take an
MCStreamer to emit into instead of an MCInst to fill in.  This allows the
matcher extra flexibility and is more convenient.

llvm-svn: 115014
2010-09-29 01:42:58 +00:00
Rafael Espindola 01d20a76fe On elf, undefined symbols can start with .L.
llvm-svn: 114958
2010-09-28 16:19:11 +00:00
Rafael Espindola 96bfb50c03 Write relocations in the end of the file. This matches what gas does and
makes files easier to diff.

llvm-svn: 114898
2010-09-27 22:04:54 +00:00
Rafael Espindola 9ca41113f6 Make sure .text doesn't produce extra alignment.
llvm-svn: 114895
2010-09-27 21:40:27 +00:00
Rafael Espindola 9735f4ff8d Factor symbol value computation into a function.
llvm-svn: 114891
2010-09-27 21:23:02 +00:00
Michael J. Spencer ce2e535b19 MC-COFF: Fix signed/unsigned comparison.
llvm-svn: 114888
2010-09-27 21:17:39 +00:00
Daniel Dunbar d116d8a4e9 MC/AsmParser: Handle exponents in floating point literals.
llvm-svn: 114861
2010-09-27 20:12:52 +00:00
Rafael Espindola cceded493f Remove unused argument.
llvm-svn: 114852
2010-09-27 18:13:03 +00:00
Benjamin Kramer c758311025 Push twines deeper into SourceMgr's error handling methods.
llvm-svn: 114847
2010-09-27 17:42:11 +00:00
Michael J. Spencer d628377a2d MC-COFF: Drop empty sections, and label symbols. Convert relocations
targeted at symbols into relocations relative to the containing section.

Patch by Nathan Jeffords!

llvm-svn: 114823
2010-09-27 08:58:26 +00:00
Rafael Espindola 75d65b9a03 Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put
symbols defined in merge sections in independent atoms.

llvm-svn: 114786
2010-09-25 05:42:19 +00:00
Rafael Espindola cf1f985838 Reapply 114678 and 114667. Reverting them did not fix the bot:
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost/builds/69

llvm-svn: 114761
2010-09-24 21:19:03 +00:00
Rafael Espindola 3843bb9d2c Revert 114678 and 114667 to see if
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost

gets happy.

llvm-svn: 114742
2010-09-24 18:48:08 +00:00
Daniel Dunbar ce17f72c38 MC/AsmParser: Handle a missed case of floating literals in the lexer.
llvm-svn: 114733
2010-09-24 17:10:26 +00:00
Daniel Dunbar 2af1653032 MC/AsmParser: Support .single and .double for embedding floating point literals.
- I believe more modern 'gas' supports a more enhanced set of arithmetic on
   them, but for now the only thing we can do is emit them as data.

llvm-svn: 114719
2010-09-24 01:59:56 +00:00
Daniel Dunbar 3068a93dc1 MC/Lexer: Add 'Real' token type for floating point literals.
llvm-svn: 114718
2010-09-24 01:59:31 +00:00
Daniel Dunbar 74c1f1192c MC: Add missing ')' in diagnostic.
llvm-svn: 114717
2010-09-24 01:58:56 +00:00
Rafael Espindola f458f04eb1 Correctly handle weak undefined symbols. Before we would get a invalid binding
(2 == STB_WEAK | STB_GLOBAL).

llvm-svn: 114690
2010-09-23 19:55:14 +00:00
Rafael Espindola 6366d1b858 Correctly compute the offset of the symbol. Forgot these bits from the
last commit.

llvm-svn: 114678
2010-09-23 18:01:31 +00:00
Rafael Espindola 48e108753b Represent relocations against local symbols as relocations against the section
they are in. Both ways should be equivalent, but gas produces relocations
against the section.

Roman wrote the patch, I added the test.

llvm-svn: 114667
2010-09-23 17:25:18 +00:00
Rafael Espindola 2816588eb9 Fix the FIXME.
llvm-svn: 114639
2010-09-23 14:14:56 +00:00
Sean Callanan 002ad003a3 Fixed a crash in the enhanced disassembler where
because of the lack of a newline, AsmToken::Eof
was being found instead of AsmToken::EndOfStatement.

llvm-svn: 114621
2010-09-23 02:14:12 +00:00
Jim Grosbach 85dcd3d0f4 Add support for ELF PLT references for ARM MC asm printing. Adding a
new VariantKind to the MCSymbolExpr seems like overkill, but I'm not sure
there's a more straightforward way to get the printing difference captured.
(i.e., x86 uses @PLT, ARM uses (PLT)).

llvm-svn: 114613
2010-09-22 23:27:36 +00:00
Rafael Espindola dee12d8110 Avoid some Mach-O specific alignment being done on ELF.
llvm-svn: 114594
2010-09-22 22:27:05 +00:00
Chris Lattner 7bce0596a7 allow target-specific label suffixes, patch by Yuri Gribov!
llvm-svn: 114592
2010-09-22 22:19:53 +00:00
Rafael Espindola 0e527b7ed5 Fix typo and add a FIXME.
llvm-svn: 114570
2010-09-22 19:04:41 +00:00
Jim Grosbach 6ebd728067 grammar tweakage
llvm-svn: 114561
2010-09-22 18:18:30 +00:00
Jim Grosbach 3bde49aa29 remove trailing whitespace
llvm-svn: 114560
2010-09-22 18:16:55 +00:00
Rafael Espindola 9bac6cb544 Correctly align bss.
llvm-svn: 114556
2010-09-22 17:43:04 +00:00
Chris Lattner 2bb9504d1a fix rdar://8456417 - llvm-mc can't do basic math
llvm-svn: 114532
2010-09-22 05:05:16 +00:00
Rafael Espindola 461a692c7f Revert unrelated change that was accidentally included in the previous commit.
llvm-svn: 114383
2010-09-21 00:40:19 +00:00
Rafael Espindola f0591c1642 Implement support for .local and its "interesting" interactions with .comm.
llvm-svn: 114382
2010-09-21 00:24:38 +00:00
Rafael Espindola 32ab4558fe Produce a R_X86_64_32 when the value is >=0.
llvm-svn: 114339
2010-09-20 19:20:47 +00:00
Rafael Espindola 57e599a82a Make sure the STT_FILE symbol is the first one in the symbol table.
llvm-svn: 114285
2010-09-18 15:03:21 +00:00
Rafael Espindola 0ecde03e9f Avoid relocations in a common case.
llvm-svn: 114229
2010-09-17 22:34:41 +00:00
Daniel Dunbar baad46c6ee Fix an MSVC warning.
llvm-svn: 114184
2010-09-17 16:34:24 +00:00
Daniel Dunbar 35a7a0ee2e MC/Mach-O/i386: Fix a crash in relocation handling.
llvm-svn: 114176
2010-09-17 15:21:50 +00:00
Daniel Dunbar 55f16678e4 MC/AsmParser: Add support for 'a + 4@GOTPCREL' and friends, by reconsing the
expression to include the modifier.
 - Gross, but this a corner case we don't expect to see often in practice, but
   it is worth accepting.
 - Also improves diagnostics on invalid modifiers.

llvm-svn: 114154
2010-09-17 02:47:07 +00:00
Rafael Espindola 44bf266111 Print the address of sections as 0 and create the metadata sections in the
same order as gnu as.

llvm-svn: 114109
2010-09-16 19:46:31 +00:00
Rafael Espindola f7f433200b Make sure that names like .note.GNU-stack are accepted as valid section names.
llvm-svn: 114091
2010-09-16 17:05:55 +00:00
Rafael Espindola 922e3f454b Add support for the .zero directive.
llvm-svn: 114077
2010-09-16 15:03:59 +00:00
Rafael Espindola f667d929ce Add a InitSections method to the streamer interface.
The ELF implementation now creates text, data and bss to match the gnu as
behavior.

The text streamer still has the old MachO specific behavior since
the testsuite checks that it will error when a directive is given
before a setting the current section for example.

A nice benefit is that -n is not required anymore when producing
ELF files.

llvm-svn: 114027
2010-09-15 21:48:40 +00:00
Michael J. Spencer 93c9b2ea93 Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally."
This reverts commit r113632

Conflicts:

	cmake/modules/AddLLVM.cmake

llvm-svn: 113819
2010-09-13 23:59:48 +00:00
Rafael Espindola 9fd2ed9243 Factoring and potential bug fix. The elf "flags" cannot be used as masks.
For example, setting STT_OBJECT (1) and STT_FUNC (2), should not produce
a STT_SECTION (3).

llvm-svn: 113759
2010-09-13 17:39:45 +00:00
Rafael Espindola 12d73d1f18 Add support for leb128 of absolute expressions.
llvm-svn: 113691
2010-09-11 16:45:15 +00:00
Chris Lattner a2a9d16b78 fix the asmparser so that the target is responsible for skipping to
the end of the line on a parser error, allowing skipping to happen
for syntactic errors but not for semantic errors.  Before we would
miss emitting a diagnostic about the second line, because we skipped
it due to the semantic error on the first line:

  foo %eax
  bar %al

This fixes rdar://8414033 - llvm-mc ignores lines after an invalid instruction mnemonic errors

llvm-svn: 113688
2010-09-11 16:18:25 +00:00
Michael J. Spencer dc38d36ccb CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally.
llvm-svn: 113632
2010-09-10 21:14:25 +00:00
Daniel Dunbar e5444a88cd llvm-mc: Don't crash when using -n and we see a directive before the initial section.
- This is annoying, because we have to scatter this check everywhere that could emit real data, but I see no better solution.

llvm-svn: 113552
2010-09-09 22:42:59 +00:00
Daniel Dunbar 43325c4a68 llvm-mc: Make sure we exit != 0 if any errors are encountered.
llvm-svn: 113551
2010-09-09 22:42:56 +00:00
Benjamin Kramer 6c3c349b2b MCELF: Write relocation fragments in the right endian.
- This code is gross, but does the job for now.

llvm-svn: 113509
2010-09-09 18:01:29 +00:00
Roman Divacky 3b727f55aa Make ELF OS ABI dependent on the OS from target triple.
llvm-svn: 113508
2010-09-09 17:57:50 +00:00
Daniel Dunbar a90e25cc64 MC: Give a (lame) hard error if a .org directive would create an unreasonably
large object file (> 1GB).

llvm-svn: 113494
2010-09-09 16:23:33 +00:00
Roman Divacky 2ef1a589c5 ELF_STB_Local is 0 so setting and checking it must be done specially
llvm-svn: 113375
2010-09-08 18:08:40 +00:00
Roman Divacky 6c27de28b5 Unresolved weak symbols have value equal zero.
llvm-svn: 113358
2010-09-08 14:29:45 +00:00
Chris Lattner 91689c1d0f change the MC "ParseInstruction" interface to make it the
implementation's job to check for and lex the EndOfStatement
marker.

llvm-svn: 113347
2010-09-08 05:10:46 +00:00
Benjamin Kramer 3723ba1fe0 MCELF: Align symtab, relocation sections and section headers properly. Patch by Krister Wombell.
llvm-svn: 113155
2010-09-06 16:11:52 +00:00
Bill Wendling 78395e4b8a Get rid of "passing signed into unsigned parameter" warning on PPC.
llvm-svn: 112995
2010-09-03 19:09:46 +00:00
Benjamin Kramer e39017cb97 Add AsmParser support for the ELF .previous directive. Patch by Roman Divacky.
llvm-svn: 112849
2010-09-02 18:53:37 +00:00
Benjamin Kramer 5af02b0360 Allow MCSA_WeakRef in ELF. Patch by Roman Divacky.
llvm-svn: 112834
2010-09-02 17:18:32 +00:00
Devang Patel da3ef85460 Fix .debug_range for linux. Patch by Krister Wombell.
llvm-svn: 112830
2010-09-02 16:43:44 +00:00
Devang Patel ea63639da5 Use absolute label for DW_AT_stmt_list if a target does not prefer offset here.
This patch was developed on top of original patch by Artur Pietrek.

llvm-svn: 112678
2010-08-31 23:50:19 +00:00
Kevin Enderby d94dacf829 This is the second of three patches to implement support for the .loc directive
and output the dwarf line number tables.  This takes the current loc info after
an instruction is assembled and saves the needed info into an object that has
vector and for each section.  These objects will be used for the final patch to 
build and emit the encoded dwarf line number tables.  Again for now this is only
in the Mach-O streamer but at some point will move to a more generic place.

llvm-svn: 112668
2010-08-31 22:55:11 +00:00
Benjamin Kramer 4226198a1d Allow creation of SHT_NULL sections, from Roman Divacky.
llvm-svn: 112605
2010-08-31 17:03:33 +00:00
Benjamin Kramer b1b493bcab MCELF: The value of all common symbols is the offset from the start of the section. Patch by Roman Divacky.
llvm-svn: 112492
2010-08-30 17:20:17 +00:00
Benjamin Kramer 8199447851 The value is offset from the start of the section for non-common symbols, submitted by Jordan Gordeev.
llvm-svn: 112473
2010-08-30 12:00:16 +00:00
Benjamin Kramer f791b9fc56 Index external symbols by symbol table instead of parent section, by Roman Divacky.
llvm-svn: 112472
2010-08-30 11:59:29 +00:00
Benjamin Kramer 6ebea89316 Mark all common symbols external. This is not exactly correct but it lets apps
link for now and can be adjusted later. Patch by Roman Divacky.

llvm-svn: 112471
2010-08-30 11:56:55 +00:00
Chris Lattner 95bb297c26 squish dead code.
llvm-svn: 112350
2010-08-28 03:21:03 +00:00
Benjamin Kramer 1f6012479f MCELF: Port EmitInstruction changes from MachO streamer. Patch by Roman Divacky.
llvm-svn: 112260
2010-08-27 10:40:51 +00:00
Benjamin Kramer 05e22982c8 MCELF: Always overwrite FixedValue.
llvm-svn: 112259
2010-08-27 10:38:39 +00:00
Benjamin Kramer 2c45f431fa MCELF: Fix a thinko of mine.
llvm-svn: 112203
2010-08-26 18:12:04 +00:00
Benjamin Kramer 929cc7618f MCELF: Compensate for the addend on i386. Patch by Roman Divacky, with some cleanups.
llvm-svn: 112197
2010-08-26 17:23:02 +00:00
Benjamin Kramer 37b384cd66 MCELF: Use precomputed symbol indices, patch by Roman Divacky.
llvm-svn: 112079
2010-08-25 20:09:43 +00:00
Michael J. Spencer 237e4ecafb MC: Fix inconsistant naming in COFF object writer. Patch by Cameron Esfahani.
llvm-svn: 112076
2010-08-25 19:27:27 +00:00
Kevin Enderby a71ab07e14 Change the parsing of .loc back to allow the LineNumber field to be optional as
it is with other assemblers.

llvm-svn: 111967
2010-08-24 21:14:47 +00:00
Michael J. Spencer ccd28d0665 Fix COFF x86-64 relocations. PR7960.
Multiple symbol reloc handling part of the patch by Cameron Esfahani.

llvm-svn: 111963
2010-08-24 21:04:52 +00:00
Kevin Enderby 1264b7cab8 First bit of support for the dwarf .loc directive. This patch updates the
needed parsing for the .loc directive and saves the current info from that
into the context.  The next patch will take the current loc info after an
instruction is assembled and save that info into a vector for each section for
use to build the line number tables.  The patch after that will encode the info
from those vectors into the output file as the dwarf line tables.

llvm-svn: 111956
2010-08-24 20:32:42 +00:00
Daniel Dunbar 2476432639 MC/AsmParser: Change ParseExpression to use ParseIdentifier(), to support
dollars in identifiers.

llvm-svn: 111946
2010-08-24 19:13:42 +00:00
Daniel Dunbar 3b96ffdac1 MC/Parser: Accept leading dollar signs in identifiers.
- Implemented by manually splicing the tokens. If this turns out to be
   problematically platform specific, a more elegant solution would be to
   implement some context dependent lexing support.

llvm-svn: 111934
2010-08-24 18:12:12 +00:00
Benjamin Kramer a536f077fe Relocate against parent if the symbol is not in section or it's a common symbol, from Roman Divacky.
llvm-svn: 111925
2010-08-24 17:34:39 +00:00
Chris Lattner 02db8f6415 fix rdar://7997827 - Accept and ignore LL and ULL suffixes on integer literals.
Also fix 0b010 syntax to actually work while we're at it :-)

llvm-svn: 111876
2010-08-24 00:43:25 +00:00
Benjamin Kramer d41b53c037 Fix thinko. Having no tests is great ...
llvm-svn: 111848
2010-08-23 21:32:00 +00:00
Benjamin Kramer c4809c930a Reduce code duplication.
llvm-svn: 111846
2010-08-23 21:23:52 +00:00
Benjamin Kramer 86511dce18 ELFObjectWriter: Run ComputeSymbolTable before recording relocations. This way we can use the information it has computed and don't have to recompute the same stuff over and over again.
llvm-svn: 111844
2010-08-23 21:19:37 +00:00
Benjamin Kramer 40f83489b4 Add the symbol offset to the relocation value when we relocate against section. By Roman Divacky.
llvm-svn: 111824
2010-08-23 19:05:46 +00:00
Benjamin Kramer 620b68e883 Use the proper relocation section + cleanup, from Roman Divacky.
llvm-svn: 111819
2010-08-23 18:24:20 +00:00
Michael J. Spencer db06215b7f Revert part of my last commit. the mingw32 build bot doesn't seem to like it.
llvm-svn: 111793
2010-08-23 05:25:23 +00:00
Michael J. Spencer e87231232a Workaround broken jump tables on x86-64 COFF.
llvm-svn: 111792
2010-08-23 04:45:37 +00:00
Michael J. Spencer 377aa20e6e MC: Add partial x86-64 support to COFF.
llvm-svn: 111728
2010-08-21 05:58:13 +00:00
Benjamin Kramer 448886d5df MCELF: Count the section orders properly. Patch by Roman Divacky.
llvm-svn: 111517
2010-08-19 13:44:49 +00:00
Daniel Dunbar 8e92d9b68d MC/ELF: Allow null values in virtual sections, ELF doesn't use special
directives for putting contents in .bss, for example.

llvm-svn: 111376
2010-08-18 18:22:37 +00:00
Benjamin Kramer da7604f53d Remove dead code. Fixes a GCC warning.
llvm-svn: 111271
2010-08-17 19:45:05 +00:00
Benjamin Kramer 1afba421a9 Sketch i386 relocations handling, from Roman Divacky.
Hello world builds & runs now on i386/ELF with -integrated-as.

llvm-svn: 111264
2010-08-17 18:20:28 +00:00
Benjamin Kramer fd0541566b Use the correct entry size for relocation entries, from Roman Divacky.
llvm-svn: 111259
2010-08-17 17:56:13 +00:00
Benjamin Kramer 1fe76565d0 Differentiate between RELA and REL relocations, from Roman Divacky.
llvm-svn: 111252
2010-08-17 17:30:07 +00:00
Benjamin Kramer 896bd7e932 One baby step towards i386 ELF, from Roman Divacky.
llvm-svn: 111247
2010-08-17 17:02:29 +00:00
Benjamin Kramer b962ca0ce5 Try to silence a overeager GCC warning.
llvm-svn: 111214
2010-08-17 00:33:24 +00:00
Benjamin Kramer 5f237942f5 A round of minor cleanups for ELFObjectWriter.
llvm-svn: 111213
2010-08-17 00:00:46 +00:00
Benjamin Kramer be6cca2b7d Silence warnings and simplify code. Eliminate a 32/64 bit portability issue.
llvm-svn: 111201
2010-08-16 23:00:12 +00:00
Eli Friedman 1fe0d53aec Fixes for generation of ELF relocations. Patch by Roman Divacky.
llvm-svn: 111183
2010-08-16 21:17:09 +00:00
Eli Friedman b20b5249d2 Fix a few warnings in and detabify MCELFStreamer and ELFObjectWriter.
llvm-svn: 111175
2010-08-16 19:15:06 +00:00
Matt Fleming 6c1ad4835e Add ELF ObjectWriter and Streamer support.
I forgot to add these files in commit 111172.

llvm-svn: 111174
2010-08-16 18:57:57 +00:00
Matt Fleming d83b927897 Add ELF ObjectWriter and Streamer support.
llvm-svn: 111172
2010-08-16 18:35:43 +00:00
Matt Fleming 9cecd63b07 Layout helper function.
Introduce a helper method to add a section to the end of a layout. This
will be used by the ELF ObjectWriter code to add the metadata sections
(symbol table, etc) to the end of an object file.

llvm-svn: 111171
2010-08-16 18:35:06 +00:00
Matt Fleming c6beca522c Record a symbol's size which is needed for ELF symbol tables.
llvm-svn: 111170
2010-08-16 18:34:31 +00:00
Chris Lattner 1218ed824d silence a vc2010 warning: " result of 32-bit shift implicitly converted to
64 bits (was 64-bit shift intended?)", pointed out by 'nobled' on llvmdev

llvm-svn: 111148
2010-08-16 16:35:20 +00:00
Daniel Dunbar 2ecc3bb4f7 MC/AsmParser: Push the burdon of emitting diagnostics about unmatched
instructions onto the target specific parser, which can do a better job.

llvm-svn: 110889
2010-08-12 00:55:38 +00:00
Daniel Dunbar 2eca0252c3 llvm-mc: Add -show-inst-operands, for dumping the parsed instruction representation before matching.
llvm-svn: 110791
2010-08-11 06:37:09 +00:00
Daniel Dunbar ebace2248f MCAsmParser: Add dump() hook to MCParsedAsmOperand.
llvm-svn: 110790
2010-08-11 06:37:04 +00:00
Daniel Dunbar d215976208 MC/AsmParser: Fix a bug in macro argument parsing, which was dropping
parentheses from argument lists.

llvm-svn: 110692
2010-08-10 17:38:52 +00:00
Michael J. Spencer 18bf25f189 Revert "MC/MachO: Fix possible null pointer dereference."
This reverts commit 110575.

Target.isAbsolute() is true if SD would be null.

llvm-svn: 110683
2010-08-10 16:00:49 +00:00
Kevin Enderby 7221b76c32 Next bit of support for the dwarf .file directive. This patch takes the
previously collected info from the .file directives and outputs the encoded
bytes for it.  For now this is only in the Mach-O streamer but at some point
will move to a more generic place.

llvm-svn: 110617
2010-08-09 22:52:14 +00:00
Michael J. Spencer 4a5167c836 MC/MachO: Fix possible null pointer dereference.
Discovered by Microsoft Visual Studio 2010 Code Analysis.

llvm-svn: 110575
2010-08-09 15:28:05 +00:00
Michael J. Spencer 54cfd42c33 MC: Fix symbol fragment offsets in COFF.
Patch by Cameron Esfahani!

llvm-svn: 110104
2010-08-03 05:02:46 +00:00
Michael J. Spencer d32764c8a0 Revert "MC: Fix symbol fragment offsets in COFF."
This reverts commit r110100

Wrong path caps.

llvm-svn: 110103
2010-08-03 04:53:28 +00:00
Michael J. Spencer a6cfbeb98c MC: Add time travel support to COFF.
llvm-svn: 110101
2010-08-03 04:43:33 +00:00
Michael J. Spencer cf3d8b4ec4 MC: Fix symbol fragment offsets in COFF.
Patch by Cameron Esfahani!

llvm-svn: 110100
2010-08-03 04:43:24 +00:00
Daniel Dunbar 727be43a3d Silence some -Asserts uninitialized variable warnings.
llvm-svn: 109956
2010-07-31 21:08:54 +00:00
Michael J. Spencer 6b4925e223 Add relax all support to the COFF object streamer.
llvm-svn: 109947
2010-07-31 06:22:29 +00:00
Daniel Dunbar 5dc31317dd MC: Initialize MCFragment::Offset, noticed by Cameron Esfahani.
llvm-svn: 109875
2010-07-30 18:32:09 +00:00
Benjamin Kramer a3e0ddb564 Plug the remaining MC leaks by giving MCObjectStreamer/MCAsmStreamer ownership of the TargetAsmBackend and the MCCodeEmitter.
llvm-svn: 109767
2010-07-29 17:48:06 +00:00
Benjamin Kramer bccfec653d Stop leaking std::strings in GetDwarfFile.
llvm-svn: 109746
2010-07-29 13:53:19 +00:00
Benjamin Kramer c2997dde85 COFFObjectWriter: Don't leak COFFSymbols and COFFSections.
llvm-svn: 109745
2010-07-29 11:57:59 +00:00
Daniel Dunbar b759a13da8 MC: Destroy Macro instances.
llvm-svn: 109720
2010-07-29 01:51:55 +00:00
Kevin Enderby e5930f142a Added first bit of support for the dwarf .file directive. This patch collects
the info from the .file directive and makes file and directory tables that
will eventually be put out as part of the dwarf info in the output file.

llvm-svn: 109651
2010-07-28 20:55:35 +00:00
Daniel Dunbar e397dded7b MC: Put back the MCFragment vtable, so subclasses are destroyed properly (duh).
llvm-svn: 109649
2010-07-28 20:28:45 +00:00
Douglas Gregor 675b162512 Fix format-specifier warning
llvm-svn: 109391
2010-07-26 03:55:44 +00:00
Michael J. Spencer c21293792e MC: Fix whitespace error from last commit.
A Visual C++ extension that removes trailing new lines? Seriously?

llvm-svn: 109390
2010-07-26 03:01:28 +00:00
Michael J. Spencer b5fc138547 MC: Add WinCOFFObjectWriter implementation.
Origonal Windows COFF implementation by Nathan Jedffords.

llvm-svn: 109389
2010-07-26 02:17:32 +00:00
Reid Kleckner d85e3c5a86 Initial modifications to MCAssembler and TargetMachine for the MCJIT.
Patch by Olivier Meurant!

llvm-svn: 109080
2010-07-22 05:58:53 +00:00
Matt Fleming a8f6c1cc26 Add some more handlers for ELF section directives.
llvm-svn: 108928
2010-07-20 21:12:46 +00:00
Owen Anderson 14d74d649a Let's get those buildbots green: #include is needed in the header, not just the implementation.
llvm-svn: 108912
2010-07-20 20:16:11 +00:00
Chris Lattner 073660336c apparently also missing an include.
llvm-svn: 108908
2010-07-20 20:06:19 +00:00
Chris Lattner 4e8e93f142 this is in System
llvm-svn: 108895
2010-07-20 19:54:01 +00:00
Chris Lattner 6faea9668f turn this into a normal header.
llvm-svn: 108891
2010-07-20 19:43:19 +00:00
Chris Lattner 55cdb62dd0 hopefully heal the linux builders
llvm-svn: 108890
2010-07-20 19:40:51 +00:00
Chris Lattner 91773ea9b2 there is no reason to dynamically generate a static header.
llvm-svn: 108887
2010-07-20 18:59:58 +00:00
Chris Lattner 7e52a45f8a drop edinfo.inc into the objdir for src!=objdir builds.
llvm-svn: 108886
2010-07-20 18:53:27 +00:00
Eric Christopher 529989b8b6 Update header.
llvm-svn: 108883
2010-07-20 18:46:43 +00:00
Chris Lattner 79d68ddda8 hopefully teach cmake to build the .inc file.
llvm-svn: 108874
2010-07-20 18:33:21 +00:00
Chris Lattner 6219596ff6 cmake too
llvm-svn: 108872
2010-07-20 18:30:37 +00:00
Chris Lattner 3a14721829 forgot to add a file
llvm-svn: 108870
2010-07-20 18:29:50 +00:00
Chris Lattner 979634bbb0 start straightening out libedis's dependencies and make it fit
better in the llvm world.  Among other things, this changes:

1. The guts of libedis are now moved into lib/MC/MCDisassembler
2. llvm-mc now depends on lib/MC/MCDisassembler, not tools/edis,
   so edis and mc don't have to be built in series.
3. lib/MC/MCDisassembler no longer depends on the C api, the C
   API depends on it.
4. Various code cleanup changes. 

There is still a lot to be done to make edis fit with the llvm
design, but this is an incremental step in the right direction.

llvm-svn: 108869
2010-07-20 18:25:19 +00:00
Daniel Dunbar 6b4391aa69 MC/Mach-O: Silently ignore .file directives instead of error'ing out on
them. They aren't important enough to abort the entire assembly, and failing
early makes testing more annoying.

llvm-svn: 108747
2010-07-19 20:44:20 +00:00
Michael J. Spencer 2ed9f4bd39 _[A-Z] identifiers are reserved for the implementation.
llvm-svn: 108682
2010-07-19 06:26:19 +00:00
Michael J. Spencer e2da0a478d MC: Add WinCOFFStreamer implementation and merge common code from MachO
into MCObjectStreamer.

Origonal Windows COFF implementation by Nathan Jedffords.

llvm-svn: 108678
2010-07-19 06:13:10 +00:00
Daniel Dunbar eefe8616be TblGen/AsmMatcher: Add support for honoring instruction Requires<[]> attributes as part of the matcher.
- Currently includes a hack to limit ourselves to "In32BitMode" and "In64BitMode", because we don't have the other infrastructure to properly deal with setting SSE, etc. features on X86.

llvm-svn: 108677
2010-07-19 05:44:09 +00:00
Eli Friedman 20b026464e Make .align parse correctly on platforms where .align is measured in bytes.
llvm-svn: 108674
2010-07-19 04:17:25 +00:00
Daniel Dunbar 8897d479b5 MC/AsmParser: Stop playing unsafe member function pointer calls, this isn't
portable enough.
 - Downside is we now double dispatch through a stub function, but this isn't
   performance critical.

llvm-svn: 108661
2010-07-18 22:22:07 +00:00
Daniel Dunbar 40a564f09f MC/AsmParser: Fix .abort and .secure_log_unique to accept arbitrary token
sequences, not just strings.

llvm-svn: 108655
2010-07-18 20:15:59 +00:00
Daniel Dunbar 6fb1c3ad8a MC/AsmParser: Add macro argument substitution support.
llvm-svn: 108654
2010-07-18 19:00:10 +00:00